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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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USD ($)
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USD ($)
USD ($) / shares
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2/1/2010 - 1/30/2011
USD ($)
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9/30/2010
USD ($)
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9/30/2010
USD ($)
$As_Of_9_30_20104http://www.sec.gov/CIK0000354950instant2010-09-30T00:00:000001-01-01T00:00:00falsefalse4.625% Senior Notes due August 15, 2010 [Member]us-gaap_LongtermDebtTypeAxisxbrldihttp://xbrl.org/2006/xbrldihd_FourPointSixTwoFivePercentSeniorNotesMemberus-gaap_LongtermDebtTypeAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falsefalseUSDtruefalse{us-gaap_LongtermDebtTypeAxis} : 5.25% Senior Notes due December 16, 2013 [Member]
1/30/2011
USD ($)
$As_Of_1_30_201117http://www.sec.gov/CIK0000354950instant2011-01-30T00:00:000001-01-01T00:00:00falsefalse5.25% Senior Notes due December 16, 2013 [Member]us-gaap_LongtermDebtTypeAxisxbrldihttp://xbrl.org/2006/xbrldihd_FivePointTwoFivePercentSeniorNotesMemberus-gaap_LongtermDebtTypeAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$10falsefalseUSDtruefalse{us-gaap_LongtermDebtTypeAxis} : 5.40% Senior Notes due March 1, 2016 [Member]
2/1/2009
USD ($)
$As_Of_2_1_2009232http://www.sec.gov/CIK0000354950instant2009-02-01T00:00:000001-01-01T00:00:00falsefalse5.40% Senior Notes due March 1, 2016 [Member]us-gaap_LongtermDebtTypeAxisxbrldihttp://xbrl.org/2006/xbrldihd_FivePointFourPercentSeniorNotesMemberus-gaap_LongtermDebtTypeAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11falsefalseUSDtruefalse{us-gaap_LongtermDebtTypeAxis} : 5.40% Senior Notes due March 1, 2016 [Member]
2/3/2008
USD ($)
$As_Of_2_3_20082http://www.sec.gov/CIK0000354950instant2008-02-03T00:00:000001-01-01T00:00:00falsefalse5.40% Senior Notes due March 1, 2016 [Member]us-gaap_LongtermDebtTypeAxisxbrldihttp://xbrl.org/2006/xbrldihd_FivePointFourPercentSeniorNotesMemberus-gaap_LongtermDebtTypeAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12falsefalseUSDtruefalse{us-gaap_LongtermDebtTypeAxis} : 5.40% Senior Notes due September 15, 2040 [Member]
9/30/2010
USD ($)
$As_Of_9_30_2010http://www.sec.gov/CIK0000354950instant2010-09-30T00:00:000001-01-01T00:00:00falsefalse5.40% Senior Notes due September 15, 2040 [Member]us-gaap_LongtermDebtTypeAxisxbrldihttp://xbrl.org/2006/xbrldihd_FivePointFourZeroPercentSeniorNotesMemberus-gaap_LongtermDebtTypeAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13falsefalseUSDtruefalse{us-gaap_LongtermDebtTypeAxis} : September 2010 Issuance [Member]
9/1/2010 - 9/30/2010
USD ($)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
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-Name Regulation S-X (SX)
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-Name Statement of Financial Accounting Standard (FAS)
-Number 129
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-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 10
-Subparagraph b
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
falsefalse1321Debt (Narrative) (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue