Summary of Quarterly Results (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data Tables [Abstract]

Schedule Of Quarterly Financial Information Table Text Block

						Net Income
						Attributable		Net Income Per
						to Class A		Class A Unit (2)
	(Amounts in thousands, except per unit amounts)			Revenues		Unitholders (1)		Basic		Diluted
		2012
			December 31	$	697,654	$	66,515	$	0.33	$	0.33
			September 30		710,538		247,230		1.25		1.24
			June 30		683,985		21,847		0.11		0.11
			March 31		674,280		249,006		1.26		1.25
		2011
			December 31	$	689,959	$	74,182	$	0.37	$	0.37
			September 30		689,190		43,932		0.22		0.22
			June 30		679,084		98,196		0.50		0.49
			March 31		674,603		426,520		2.17		2.12
_______________________________
	(1)		Fluctuations among quarters resulted primarily from non-cash impairment losses, mark-to-market of derivative instruments, net gains on sale of real estate and from seasonality of business operations.
	(2)		The total for the year may differ from the sum of the quarters as a result of weighting.