2.2.0.25truefalse41001 - Disclosure - Debt (Narrative) (Details)truefalsefalse1falsefalseUSDfalsefalse5/1/2010 - 5/31/2010
USD ($)
$Duration_5_1_2010_To_5_31_2010http://www.sec.gov/CIK0000936468duration2010-05-01T00:00:002010-05-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 12/31/2010
USD ($) / shares
USD ($)
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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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USD ($)
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5/1/2010 - 5/31/2010
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7USDiso42170Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0$7falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 5.72% Notes due 6/1/2040 [Member]
12/31/2010
USD ($)
$As_Of_12_31_2010225http://www.sec.gov/CIK0000936468instant2010-12-31T00:00:000001-01-01T00:00:00falsefalse5.72% Notes due 6/1/2040 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFivePointSevenTwoPercentDueOnJuneOneTwoThousandFourtyMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit14Standardhttp://www.xbrl.org/2003/ins
tancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.25% Notes due 11/15/2019 [Member]
11/1/2009 - 11/30/2009
Duration_11_1_2009_To_11_30_20092http://www.sec.gov/CIK0000936468duration2009-11-01T00:00:002009-11-30T00:00:00falsefalse4.25% Notes due 11/15/2019 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFourPointTwoFivePercentDueOnNovemberFifteenTwoThousandNineteenMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit14Standardhttp://www.xbrl.or
g/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170$9falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.25% Notes due 11/15/2019 [Member]
12/31/2010
USD ($)
$As_Of_12_31_201042http://www.sec.gov/CIK0000936468instant2010-12-31T00:00:000001-01-01T00:00:00falsefalse4.25% Notes due 11/15/2019 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFourPointTwoFivePercentDueOnNovemberFifteenTwoThousandNineteenMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit14Standardhttp://www.xbrl.or
g/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.25% Notes due 11/15/2019 [Member]
12/31/2009
USD ($)
$As_Of_12_31_20092255http://www.sec.gov/CIK0000936468instant2009-12-31T00:00:000001-01-01T00:00:00falsefalse4.25% Notes due 11/15/2019 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFourPointTwoFivePercentDueOnNovemberFifteenTwoThousandNineteenMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit12Standardhttp://www.xbrl.
org/2003/iso4217USDiso42170USDUSD$11falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 5.50% Notes due 11/15/2039 [Member]
11/1/2009 - 11/30/2009
Duration_11_1_2009_To_11_30_2009http://www.sec.gov/CIK0000936468duration2009-11-01T00:00:002009-11-30T00:00:00falsefalse5.50% Notes due 11/15/2039 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFivePointFiveZeroPercentDueOnNovemberFifteenTwoThousandThirtyNineMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit12Standardhttp://www.xbrl.
org/2003/iso4217USDiso42170Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0$12falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 5.50% Notes due 11/15/2039 [Member]
12/31/2010
USD ($)
$As_Of_12_31_2010224http://www.sec.gov/CIK0000936468instant2010-12-31T00:00:000001-01-01T00:00:00falsefalse5.50% Notes due 11/15/2039 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFivePointFiveZeroPercentDueOnNovemberFifteenTwoThousandThirtyNineMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit12Standardhttp://www.xbr
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12/31/2009
USD ($)
$As_Of_12_31_20092253http://www.sec.gov/CIK0000936468instant2009-12-31T00:00:000001-01-01T00:00:00falsefalse5.50% Notes due 11/15/2039 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFivePointFiveZeroPercentDueOnNovemberFifteenTwoThousandThirtyNineMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit12Standardhttp://www.xb
rl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.12% Notes due 3/14/2013 [Member]
3/1/2008 - 3/31/2008
Duration_3_1_2008_To_3_31_2008http://www.sec.gov/CIK0000936468duration2008-03-01T00:00:002008-03-31T00:00:00falsefalse4.12% Notes due 3/14/2013 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFourPointOneTwoPercentDueOnMarchFourteenTwoThousandThirteenMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/
iso4217USDiso42170Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0$15falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.12% Notes due 3/14/2013 [Member]
12/31/2010
USD ($)
$As_Of_12_31_201032http://www.sec.gov/CIK0000936468instant2010-12-31T00:00:000001-01-01T00:00:00falsefalse4.12% Notes due 3/14/2013 [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldilmt_NotesFourPointOneTwoPercentDueOnMarchFourteenTwoThousandThirteenMemberus-gaap_DebtInstrumentAxisexplicitMemberUnit14Standardhttp://www.xbrl.org/20
03/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : 4.12% Notes due 3/14/2013 [Member]
12/31/2009
USD ($)
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-Name Regulation S-X (SX)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Article 9
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Name Regulation S-X (SX)
-Number 210
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falsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalse
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-Name Statement of Financial Accounting Standard (FAS)
-Number 95
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-Name Accounting Principles Board Opinion (APB)
-Number 21
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-Name Statement of Financial Accounting Standard (FAS)
-Number 95
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Paragraph 19, 22
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
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/IsNumeric>falsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-term debt maturing in year three following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 47
-Paragraph 10
-Subparagraph b
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TypemonetaryThe amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalizedReference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 29
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