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Partners include general, limited and preferred partners. Limited liability partnerships (LLPs) are formed in accordance with the laws of the state in which such entities are organized. Because those laws are not uniform, the characteristics of LPCs vary from state to state. However, LLPs generally have the following characteristics: An LLP is an unincorporated association of two or more "persons"; Its members have limited personal liability for the obligations or debts of the entity; It is classified as a partnership for federal income tax purposes. 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A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses. 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No authoritative reference available. false 10 Adjustment to funded status of benefit plans 3 us-gaap_OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false 6400000 6400 true false false 4 false false false false 0 0 true false false 5 false true false false 6400000 6400 false false false xbrli:monetaryItemType monetary After tax gain or loss adjustment to other comprehensive income resulting from the settlement or curtailment of the entity's defined benefit pension and other postretirement plans. A settlement is defined as a transaction that (a) is an irrevocable action, (b) relieves the employer or plan of a primary responsibility for a pension benefit obligation, and (c) eliminates significant risks related to the obligations and the assets used to effect the settlement. A curtailment is an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. 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All partners include general, limited and preferred partners. 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All partners include general, limited and preferred partners. 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Partners include general, limited and preferred partners. Limited liability partnerships (LLPs) are formed in accordance with the laws of the state in which such entities are organized. Because those laws are not uniform, the characteristics of LPCs vary from state to state. However, LLPs generally have the following characteristics: An LLP is an unincorporated association of two or more "persons"; Its members have limited personal liability for the obligations or debts of the entity; It is classified as a partnership for federal income tax purposes. 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Partners include general, limited and preferred partners. Limited liability partnerships (LLPs) are formed in accordance with the laws of the state in which such entities are organized. Because those laws are not uniform, the characteristics of LPCs vary from state to state. However, LLPs generally have the following characteristics: An LLP is an unincorporated association of two or more "persons"; Its members have limited personal liability for the obligations or debts of the entity; It is classified as a partnership for federal income tax purposes. 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No authoritative reference available. false 8 Change in value of derivatives 3 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -58772000 -58772 true false false 4 false false false false 0 0 true false false 5 false true false false -58772000 -58772 false false false xbrli:monetaryItemType monetary Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses. 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No authoritative reference available. false 11 Amortization of benefit plan costs 3 us-gaap_OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -856000 -856 true false false 4 false false false false 0 0 true false false 5 false true false false -856000 -856 false false false xbrli:monetaryItemType monetary The adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, after tax. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 52 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 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 false 12 Distributions paid to partners 3 us-gaap_DistributionMadeToMemberOrLimitedPartnerCashDistribution us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -38500000 -38500 true false false 2 false true false false -147250000 -147250 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false true false false -185750000 -185750 false false false xbrli:monetaryItemType monetary Cash dividends declared or paid to a common shareholder or unit-holder by LLC or LP. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 201 -Paragraph c -Subparagraph 1, 2 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 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 FASB -Name Statement of Financial Accounting Concepts (CON) -Number 5 -Paragraph 55, 56, 57 false 13 Distributions paid to noncontrolling interests 3 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false -3886000 -3886 true false false 5 false true false false -3886000 -3886 false false false xbrli:monetaryItemType monetary Decrease in noncontrolling interest balance from payment of dividends or other distributions to noncontrolling interest holders. 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No authoritative reference available. false 16 Amortization of unit-based compensation awards 3 us-gaap_PartnersCapitalAccountUnitBasedCompensation us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false true false false 5159000 5159 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false true false false 5159000 5159 false false false xbrli:monetaryItemType monetary Total change in each class of partners' capital accounts during the year due to unit-based compensation. All partners include general, limited and preferred partners. 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All partners include general, limited and preferred partners. 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No authoritative reference available. true 19 Ending Balance at Sep. 30, 2010 3 us-gaap_PartnersCapital us-gaap true credit instant No definition available. false false false true false false false false false true false periodendlabel instant 2010-09-30T00:00:00 0001-01-01T00:00:00 false 1 true true false false 1754000 1754 true false false 2 true true false false 1198319000 1198319 true false false 3 true true false false -59752000 -59752 true false false 4 true true false false 22604000 22604 true false false 5 true true false false 1162925000 1162925 false false false xbrli:monetaryItemType monetary Ownership interest of different classes of partners in the publicly listed limited partnership or master limited partnership. Partners include general, limited and preferred partners. Limited liability partnerships (LLPs) are formed in accordance with the laws of the state in which such entities are organized. Because those laws are not uniform, the characteristics of LPCs vary from state to state. However, LLPs generally have the following characteristics: An LLP is an unincorporated association of two or more "persons"; Its members have limited personal liability for the obligations or debts of the entity; It is classified as a partnership for federal income tax purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Practice Bulletin (PB) -Number 14 -Paragraph 15 false 5 25 false Thousands UnKnown UnKnown false true