Consolidated Statements Of Comprehensive Income (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 76,050	$ 107,387	$ 479,868	$ 390,341
Other comprehensive income (loss), net of tax:
Reclassification to earnings of gains and losses on derivative instruments accounted for as cash flow hedges	(4,994)	(5,388)	(27,405)	(18,006)
Change in value of derivative instruments accounted for as cash flow hedges	6,126	34,776	14,583	59,410
Change in value of available-for-sale securities	(900)	(732)	(935)	(3,785)
Total other comprehensive income (loss)	232	28,656	(13,757)	37,619
Comprehensive income	76,282	136,043	466,111	427,960
Less: Comprehensive income attributable to noncontrolling interest	9,285	0	17,673	0
Comprehensive income attributable to partners	$ 66,997	$ 136,043	$ 448,438	$ 427,960

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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