Consolidated Statements of Partners' Capital and Noncontrolling Interest (Predecessor) (USD $) In Thousands, except Share data	Total	Predecessor [Member] USD ($)	Predecessor [Member] Common Units [Member]	Predecessor [Member] Common Unitholders [Member] USD ($)	Predecessor [Member] Class D and Subordinated Units [Member]	Predecessor [Member] Class D and Subordinated Unitholders [Member] USD ($)	Predecessor [Member] General Partner Interest [Member] USD ($)	Predecessor [Member] Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	Predecessor [Member] Noncontrolling Interest [Member] USD ($)
Balance at Dec. 31, 2008		$ 1,099,413		$ 764,161		$ 225,368	$ 29,283	$ 67,440	$ 13,161
Balance - (in Units) at Dec. 31, 2008			54,796,701		26,380,402
Revision of partner interest				6,073			(6,073)
Issuance of restricted common units, net of forfeitures - (in units)			(63,750)
Public common units offerings		220,318		220,318
Public common units offerings - (in Units)			12,075,000
Conversion of subordinated units				(1,391)		1,391
Conversion of subordinated units - (in Units)			19,103,896		(19,103,896)
Unit-based compensation expenses		6,008		6,008
Accrued distributions to phantom units		(249)		(249)
Acquisition of assets between entities under common control in excess of historical cost		(10,197)					(10,197)
Partner distributions		(146,585)		(141,225)			(5,360)
Partners capital contributions, amount		6,344					6,344
Net income		140,489		134,326		820	5,252		91
Conversion of Class D common units - (in Units)			7,276,506		(7,276,506)
Conversion of Class D common units				227,579		(227,579)
Contributions from noncontrolling interest		898							898
Accrued distributions to Series A convertible redeemable preferred units		(3,891)		(3,891)
Accretion of Series A convertible redeemable preferred units		(104)		(104)
Net cash flow hedge amounts reclassified to earnings		(47,394)						(47,394)
Net change in fair value of cash flow hedges		(22,040)						(22,040)
Balance at Dec. 31, 2009		1,243,010		1,211,605			19,249	(1,994)	14,150
Balance - (in Units) at Dec. 31, 2009			93,188,353		0
Issuance of common units under LTIP, net of forfeitures and tax withholding		(4,994)		(4,994)
Issuance of common units under LTIP, net of forfeitures and tax withholding - (in Units)			152,075
Issuance of common units, net of costs		(89)		(89)
Proceeds from exercise of common unit options		120		120
Unit-based compensation expenses		12,070		12,070
Accrued distributions to phantom units		(473)		(473)
Acquisition of assets between entities under common control in excess of historical cost		(16,973)					(16,973)
Partner distributions		86,078		82,930			3,148
Distributions to noncontrolling interest		(1,135)							(1,135)
Net income		(4,946)		(6,014)			662		406
Accrued distributions to Series A convertible redeemable preferred units		(1,945)		(1,906)			(39)
Accretion of Series A convertible redeemable preferred units		(55)		(55)
Net cash flow hedge amounts reclassified to earnings		2,145						2,145
Net change in fair value of cash flow hedges		18,486						18,486
Balance at May. 25, 2010		$ 1,159,143		$ 1,127,334			$ (249)	$ 18,637	$ 13,421
Balance - (in Units) at May. 25, 2010			93,340,428