2.2.0.25falsefalse40501 - Disclosure - Debt (Short-term and Commercial Paper Programs) (Details)truefalsefalse1falsefalseUSDfalsefalse2/1/2010 - 1/30/2011
USD ($)
USD ($) / shares
$Duration_2_1_2010_To_1_30_2011http://www.sec.gov/CIK0000354950duration2010-02-01T00:00:002011-01-30T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse2/2/2009 - 1/31/2010
USD ($)
USD ($) / shares
$Duration_2_2_2009_To_1_31_2010http://www.sec.gov/CIK0000354950duration2009-02-02T00:00:002010-01-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5false0hd_MaximumAvailableCommercialPaperBorrowingCapacityhdfalsecreditdurationMaximum Available Commercial Paper Borrowing Capacityfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse20000000002000000000falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryMaximum Available Commercial Paper Borrowing CapacityNo authoritative reference available.falsefalse6false0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse20000000002000000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryMaximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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
-Section 02
-Paragraph 19, 22
-Article 5
falsefalse7false0us-gaap_LineOfCreditFacilityExpirationDateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00July 2013July 2013falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringReflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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
-Section 02
-Paragraph 19, 22
-Article 5
falsefalse8false0us-gaap_ShorttermDebtMaximumMonthendOutstandingAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse190000000190000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFor the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Industry Guide
-Number 3
-Section VII
-Subsection 2
falsefalse9false0us-gaap_ShorttermDebtAverageOutstandingAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse50000005000000falsetruefalsefalsefalse2truefalsefalse5500000055000000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFor the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.No authoritative reference available.falsefalse10false0us-gaap_ShortTermDebtWeightedAverageInterestRateus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.0040.004falsefalsefalsefalsefalse2truetruefalse0.0110.011falsefalsefalsefalsefalseOtherus-types:percentItemTypepureReflects the calculation as of the balance-sheet date of the average interest rate weighted by the amount of short-term debt outstanding by type or by instrument at that time.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19
-Subparagraph b
-Article 5
falsefalse26Debt (Short-term and Commercial Paper Programs) (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue
