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CATERPILLAR INC

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Graphics

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2.2.0.25truefalse4124 - Disclosure - Postemployment benefit plans (Details 5)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $D2009http://www.sec.gov/CIK0000018230duration2009-01-01T00:00:002009-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : U.S. Pension Benefits 1/1/2010 - 12/31/2010 USD ($) $D2010_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMemberhttp://www.sec.gov/CIK0000018230duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseU.S. Pension Benefitsus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : U.S. Pension Benefits 1/1/2009 - 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12/31/2008 USD ($) $D2008_ForeignPensionPlansDefinedBenefitMemberhttp://www.sec.gov/CIK0000018230duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseNon-U.S. Pension Benefitsus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ForeignPensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$9falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Non-U.S. Pension Benefits 12/31/2007 USD ($) $I2007_ForeignPensionPlansDefinedBenefitMemberhttp://www.sec.gov/CIK0000018230instant2007-12-31T00:00:000001-01-01T00:00:00falsefalseNon-U.S. Pension Benefitsus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ForeignPensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Postretirement Benefits 1/1/2010 - 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12/31/2008 USD ($) $D2008_OtherPostretirementBenefitPlansDefinedBenefitMemberhttp://www.sec.gov/CIK0000018230duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseOther Postretirement Benefitsus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Postretirement Benefits 12/31/2007 USD ($) $I2007_OtherPostretirementBenefitPlansDefinedBenefitMemberhttp://www.sec.gov/CIK0000018230instant2007-12-31T00:00:000001-01-01T00:00:00falsefalseOther Postretirement Benefitsus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2true0us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.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:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalse4false0us-gaap_DefinedBenefitPlanBenefitObligationus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1302400000013024falsefalsefalsetruefalse3truefalsefalse1206400000012064falsefalsefalsetruefalse4truefalsefalse1149300000011493falsefalsefalsetruefalse5truefalsefalse1113200000011132falsefalsefalsetruefalse6truefalsefalse38670000003867falsefalsefalsetruefalse7truefalsefalse35420000003542falsefalsefalsetruefalse8truefalsefalse32190000003219falsefalsefalsetruefalse9truefalsefalse30120000003012falsefalsefalsetruefalse10truefalsefalse51840000005184falsefalsefalsetruefalse11truefalsefalse45370000004537falsefalsefalsetruefalse12truefalsefalse50170000005017falsefalsefalsetruefalse13truefalsefalse54550000005455falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetary1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. The projected benefit obligation is measured using assumptions as to future compensation levels if the pension benefit formula is based on those future compensation levels (pay-related, final-pay, final-average-pay, or career-average-pay plans). For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. Prior to an employee's full eligibility date, the accumulated postretirement benefit obligation as of a particular date for an employee is the portion of the expected postretirement benefit obligation attributed to that employee's service rendered to that date; on and after the full eligibility date, the accumulated and expected postretirement benefit obligations for an employee are the same.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph E1 falsefalse5false0us-gaap_DefinedBenefitPlanFundedStatusOfPlanus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-2264000000-2264falsefalsefalsetruefalse3truefalsefalse-3035000000-3035falsefalsefalsetruefalse4truefalsefalse-4748000000-4748falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-987000000-987falsefalsefalsetruefalse7truefalsefalse-745000000-745falsefalsefalsetruefalse8truefalsefalse-1044000000-1044falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-4188000000-4188falsefalsefalsetruefalse11truefalsefalse-3474000000-3474falsefalsefalsetruefalse12truefalsefalse-3975000000-3975falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c falsefalse6true0us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse7false0us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse40000004falsefalsefalsetruefalse7truefalsefalse2200000022falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c falsefalse8false0us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-18000000-18falsefalsefalsetruefalse3truefalsefalse-17000000-17falsefalsefalsetruefalse4truefalsefalse-14000000-14falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-18000000-18falsefalsefalsetruefalse7truefalsefalse-18000000-18falsefalsefalsetruefalse8truefalsefalse-2000000-2falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-171000000-171falsefalsefalsetruefalse11truefalsefalse-113000000-113falsefalsefalsetruefalse12truefalsefalse-29000000-29falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryFor a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 3 falsefalse9false0us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-2246000000-2246falsefalsefalsetruefalse3truefalsefalse-3018000000-3018falsefalsefalsetruefalse4truefalsefalse-4734000000-4734falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-973000000-973falsefalsefalsetruefalse7truefalsefalse-749000000-749falsefalsefalsetruefalse8truefalsefalse-1042000000-1042falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-4017000000-4017falsefalsefalsetruefalse11truefalsefalse-3361000000-3361falsefalsefalsetruefalse12truefalsefalse-3946000000-3946falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 3 falsefalse10false0us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-2264000000-2264falsefalsefalsetruefalse3truefalsefalse-3035000000-3035falsefalsefalsetruefalse4truefalsefalse-4748000000-4748falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-987000000-987falsefalsefalsetruefalse7truefalsefalse-745000000-745falsefalsefalsetruefalse8truefalsefalse-1044000000-1044falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-4188000000-4188falsefalsefalsetruefalse11truefalsefalse-3474000000-3474falsefalsefalsetruefalse12truefalsefalse-3975000000-3975falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c falsefalse11true0us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse12false0us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse47950000004795falsefalsefalsetruefalse3truefalsefalse51320000005132falsefalsefalsetruefalse4truefalsefalse64190000006419falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse12730000001273falsefalsefalsetruefalse7truefalsefalse12000000001200falsefalsefalsetruefalse8truefalsefalse13190000001319falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse11950000001195falsefalsefalsetruefalse11truefalsefalse659000000659falsefalsefalsetruefalse12truefalsefalse881000000881falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c falsefalse13false0us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTaxus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse8300000083falsefalsefalsetruefalse3truefalsefalse132000000132falsefalsefalsetruefalse4truefalsefalse170000000170falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse4300000043falsefalsefalsetruefalse7truefalsefalse80000008falsefalsefalsetruefalse8truefalsefalse1300000013falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-122000000-122falsefalsefalsetruefalse11truefalsefalse-177000000-177falsefalsefalsetruefalse12truefalsefalse320000000320falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAmount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 falsefalse14false0us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse70000007falsefalsefalsetruefalse11truefalsefalse90000009falsefalsefalsetruefalse12truefalsefalse1000000010falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryOf the original amount of transition assets as of the date FAS 87 or 106 was initially applied, (a) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost in excess of (b) the benefit obligation, the portion of which has yet to be recognized as components of net periodic benefit cost. Of the original amount of transition obligations as of the date FAS 87 or 106 was initially applied, (a) the benefit obligation in excess of (b) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost, the portion of which has yet to be recognized as components of net periodic benefit cost. This amount is pretax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph ii Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 falsefalse15false0us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse48780000004878falsefalsefalsetruefalse3truefalsefalse52640000005264falsefalsefalsetruefalse4truefalsefalse65890000006589falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse13160000001316falsefalsefalsetruefalse7truefalsefalse12080000001208falsefalsefalsetruefalse8truefalsefalse13320000001332falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse10800000001080falsefalsefalsetruefalse11truefalsefalse491000000491falsefalsefalsetruefalse12truefalsefalse12110000001211falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe pretax total of net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i truefalse16true0us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstractus-gaaptruenadurationNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse451000000451falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse7100000071falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse108000000108falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.Reference 1: 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse2000000020falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse30000003falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-55000000-55falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph s Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph d falsefalse19false0us-gaap_DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse20000002falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amounts in accumulated other comprehensive income related to transition assets (obligations), origination from the adoption of FAS 87 and 106, expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph s Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph d falsefalse20false0us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse471000000471falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse7400000074falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse5500000055falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented (including the net gain or loss, net prior service cost or credit, and net transition asset or obligation).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph s Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph d truefalse21true0us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstractus-gaaptruenadurationNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-13024000000-13024falsefalsefalsetruefalse3truefalsefalse-12064000000-12064falsefalsefalsetruefalse4truefalsefalse-11493000000-11493falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-3846000000-3846falsefalsefalsetruefalse7truefalsefalse-3350000000-3350falsefalsefalsetruefalse8truefalsefalse-3194000000-3194falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryIf aggregate disclosures are presented, the aggregate benefit obligation for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.Reference 1: 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reference available.falsefalse24false0us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1076000000010760falsefalsefalsetruefalse3truefalsefalse90290000009029falsefalsefalsetruefalse4truefalsefalse67450000006745falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse28550000002855falsefalsefalsetruefalse7truefalsefalse25840000002584falsefalsefalsetruefalse8truefalsefalse21510000002151falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryIf aggregate disclosures are presented, the aggregate fair value of plan assets for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 -Subparagraph a falsefalse25true0us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstractus-gaaptruenadurationNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-13024000000-13024falsefalsefalsetruefalse3truefalsefalse-12064000000-12064falsefalsefalsetruefalse4truefalsefalse-11493000000-11493falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-3452000000-3452falsefalsefalsetruefalse7truefalsefalse-1594000000-1594falsefalsefalsetruefalse8truefalsefalse-3040000000-3040falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryIf aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.Reference 1: 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available.falsefalse30false0us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYearus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse790000000790falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse210000000210falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse180000000180falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph g falsefalse31false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearOneus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse820000000820falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse180000000180falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse380000000380falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 1.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f 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132R -Paragraph 5 -Subparagraph f falsefalse33false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearThreeus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse840000000840falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse230000000230falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse400000000400falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 3.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of 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Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse44false0us-gaap_PrescriptionDrugSubsidyReceiptsFiveFiscalYearsThereafterus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse130000000130falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate amount for the next five fiscal years following the first five fiscal years (that is the aggregate of fiscal years six through ten) following the balance sheet date of the prescription drug subsidy receipts expected to be received.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS106-2 -Paragraph 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse45false0cat_DefinedBenefitPlanExpectedGrossPrescriptionDrugSubsidyReceiptscatfalsecreditinstantAmount of the prescription drug subsidy receipts expected to be received by 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The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalse48false0us-gaap_DefinedBenefitPlanInterestCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse652000000652falsefalsefalsetruefalse3truefalsefalse688000000688falsefalsefalsetruefalse4truefalsefalse629000000629falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse162000000162falsefalsefalsetruefalse7truefalsefalse146000000146falsefalsefalsetruefalse8truefalsefalse156000000156falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse245000000245falsefalsefalsetruefalse11truefalsefalse280000000280falsefalsefalsetruefalse12truefalsefalse307000000307falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalse49false0us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssetsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-773000000-773falsefalsefalsetruefalse3truefalsefalse-777000000-777falsefalsefalsetruefalse4truefalsefalse-882000000-882falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-192000000-192falsefalsefalsetruefalse7truefalsefalse-181000000-181falsefalsefalsetruefalse8truefalsefalse-201000000-201falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-93000000-93falsefalsefalsetruefalse11truefalsefalse-111000000-111falsefalsefalsetruefalse12truefalsefalse-138000000-138falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAn amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalse50false0cat_CurtailmentsSettlementsAndSpecialTerminationBenefitsOtherOperatingExpensecatfalsedebitdurationThis cost is deducted in the computation of operating profit and includes the following: (1) curtailments that significantly...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:monetaryItemTypemonetaryThis cost is deducted in the computation of operating profit and includes the following: (1) curtailments that significantly reduce the expected years of future service of present employees or eliminate for a significant number of employees the accrual of defined benefits for some or all of their future services, (2) settlements that irrevocably relieve the employer (or the plan) of primary responsibility for a benefit obligation and eliminate significant risks related to the obligation and the assets used to effect the settlement and (3) special termination benefits that are offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. 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falsefalse55false0us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse527000000527falsefalsefalsetruefalse3truefalsefalse497000000497falsefalsefalsetruefalse4truefalsefalse112000000112falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse150000000150falsefalsefalsetruefalse7truefalsefalse123000000123falsefalsefalsetruefalse8truefalsefalse8800000088falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse200000000200falsefalsefalsetruefalse11truefalsefalse277000000277falsefalsefalsetruefalse12truefalsefalse287000000287falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe total amount of net periodic benefit cost for defined benefit plans for the period. 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represents the amount recognized in other comprehensive income resulting from actuarial gain or loss during the...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse4700000047falsefalsefalsetruefalse3truefalsefalse-1037000000-1037falsefalsefalsetruefalse4truefalsefalse44010000004401falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse136000000136falsefalsefalsetruefalse7truefalsefalse-88000000-88falsefalsefalsetruefalse8truefalsefalse696000000696falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse570000000570falsefalsefalsetruefalse11truefalsefalse-200000000-200falsefalsefalsetruefalse12truefalsefalse172000000172falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents the amount recognized in other comprehensive income resulting from actuarial gain or loss during the period.No authoritative reference available.falsefalse59false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-385000000-385falsefalsefalsetruefalse3truefalsefalse-248000000-248falsefalsefalsetruefalse4truefalsefalse-134000000-134falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-62000000-62falsefalsefalsetruefalse7truefalsefalse-32000000-32falsefalsefalsetruefalse8truefalsefalse-36000000-36falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-33000000-33falsefalsefalsetruefalse11truefalsefalse-20000000-20falsefalsefalsetruefalse12truefalsefalse-64000000-64falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe net gain or loss previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a falsefalse60false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-24000000-24falsefalsefalsetruefalse3truefalsefalse-10000000-10falsefalsefalsetruefalse4truefalsefalse1600000016falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse3500000035falsefalsefalsetruefalse7truefalsefalse-2000000-2falsefalsefalsetruefalse8truefalsefalse10000001falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11truefalsefalse-537000000-537falsefalsefalsetruefalse12truefalsefalse-3000000-3falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe pretax cost (credit) of benefit changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that occurred during the period. The cost has not yet been recognized in net periodic benefit cost. A plan amendment includes provisions that grant increased (decreased) benefits based on services rendered in prior periods.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 37 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a falsefalse61false0us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-25000000-25falsefalsefalsetruefalse3truefalsefalse-29000000-29falsefalsefalsetruefalse4truefalsefalse-32000000-32falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-1000000-1falsefalsefalsetruefalse7truefalsefalse-1000000-1falsefalsefalsetruefalse8truefalsefalse-3000000-3falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse5500000055falsefalsefalsetruefalse11truefalsefalse4000000040falsefalsefalsetruefalse12truefalsefalse3500000035falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate net prior service cost or credit recognized in other comprehensive income, including amounts arising during the period and reclassification adjustments of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a falsefalse62false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostBeforeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8truefalsefalse-1000000-1falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse-2000000-2falsefalsefalsetruefalse11truefalsefalse-2000000-2falsefalsefalsetruefalse12truefalsefalse-2000000-2falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe net transition asset or obligation recognized, before tax, as a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) falsefalse63false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-387000000-387falsefalsefalsetruefalse3truefalsefalse-1324000000-1324falsefalsefalsetruefalse4truefalsefalse42370000004237falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse108000000108falsefalsefalsetruefalse7truefalsefalse-123000000-123falsefalsefalsetruefalse8truefalsefalse648000000648falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse590000000590falsefalsefalsetruefalse11truefalsefalse-719000000-719falsefalsefalsetruefalse12truefalsefalse135000000135falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAmounts recognized in other comprehensive income (but not yet recognized in net periodic benefit cost), including the net gain (loss) and net prior service cost (credit) arising during the period. Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph C3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a truefalse64false0cat_AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncomecatfalsecreditdurationThis element represents the aggregate amount recognized in net periodic cost and other comprehensive income.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegatedtotal1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse140000000140falsetruefalsetruefalse3truefalsefalse-827000000-827falsetruefalsetruefalse4truefalsefalse43490000004349falsetruefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse258000000258falsetruefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8truefalsefalse736000000736falsetruefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse790000000790falsetruefalsetruefalse11truefalsefalse-442000000-442falsetruefalsetruefalse12truefalsefalse422000000422falsetruefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents the aggregate amount recognized in net periodic cost and other comprehensive income.No authoritative reference available.truefalse65true0us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse66false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse0.0540.054falsefalsefalsetruefalse3truetruefalse0.0630.063falsefalsefalsetruefalse4truetruefalse0.0580.058falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6truetruefalse0.0480.048falsefalsefalsetruefalse7truetruefalse0.0470.047falsefalsefalsetruefalse8truetruefalse0.0530.053falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0560.056falsefalsefalsetruefalse11truetruefalse0.0630.063falsefalsefalsetruefalse12truetruefalse0.0580.058falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThe interest rate used to adjust for the time value of money.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalse67false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssetsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse0.0850.085falsefalsefalsetruefalse3truetruefalse0.0850.085falsefalsefalsetruefalse4truetruefalse0.0900.090falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6truetruefalse0.0700.070falsefalsefalsetruefalse7truetruefalse0.0660.066falsefalsefalsetruefalse8truetruefalse0.0760.076falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0850.085falsefalsefalsetruefalse11truetruefalse0.0850.085falsefalsefalsetruefalse12truetruefalse0.0900.090falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureAn assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalse68false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse0.0450.045falsefalsefalsetruefalse3truetruefalse0.0450.045falsefalsefalsetruefalse4truetruefalse0.0450.045falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6truetruefalse0.0420.042falsefalsefalsetruefalse7truetruefalse0.0380.038falsefalsefalsetruefalse8truetruefalse0.0400.040falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0440.044falsefalsefalsetruefalse11truetruefalse0.0440.044falsefalsefalsetruefalse12truetruefalse0.0440.044falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureExpected rate of compensation increases (for pay-related plans).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalse69false0cat_DefinedBenefitPlanAssumptionsUsedInCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssetsInNextFiscalYearcatfalsenadurationAn assumption as to the rate of return on plan assets during next fiscal year reflecting the average rate of earnings...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse0.0850.085falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6truetruefalse0.0710.071falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10falsetruefalse00falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureAn assumption as to the rate of return on plan assets during next fiscal year reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.No authoritative reference available.falsefalse70false0cat_AdditionalAmountOverLongTermPassiveRateOfReturncatfalsenadurationThis element represents the additional percentage amount added to long-term passive rate of returns to arrive at the...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse0.010.01falsefalsefalsetruefalse3truetruefalse0.010.01falsefalsefalsetruefalse4truetruefalse0.010.01falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10falsetruefalse00falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThis element represents the additional percentage amount added to long-term passive rate of returns to arrive at the long-term active rate of return.No authoritative reference available.falsefalse71true0us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse72false0us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0790.079falsefalsefalsetruefalse11truetruefalse0.0700.070falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThe assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph l falsefalse73false0us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0500.050falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThe ultimate trend rate for health care costs.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph l falsefalse74false0cat_DefinedBenefitPlanGeneralInflationRatecatfalsenainstantThis element represent general inflation rate that forms part of ultimate health care trend rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0300.030falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThis element represent general inflation rate that forms part of ultimate health care trend rate.No authoritative reference available.falsefalse75false0cat_DefinedBenefitPlanAdditionalHealthCareInflationRatecatfalsenainstantThis element represents additional health care inflation rate that forms part of ultimate health care trend rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10truetruefalse0.0200.020falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThis element represents additional health care inflation rate that forms part of ultimate health care trend rate.No authoritative reference available.falsefalse1374Postemployment benefit plans (Details 5) (USD $)MillionsUnKnownUnKnownUnKnowntruetrue