Supplemental Condensed Consolidating Financial Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidating Statements of Operations
Total revenue	$ 415,120	$ 442,822	$ 788,393	$ 790,085
Operating expenses:
Purchased product costs	134,927	61,152	276,780	234,507
Facility expenses	63,597	47,084	122,775	93,663
Selling, general and administrative expenses	25,499	21,700	50,741	46,748
Depreciation and amortization	88,654	53,643	171,501	104,210
Other operating expenses (income)	(37,579)	1,502	(37,089)	2,724
Total operating expenses	275,098	185,081	584,708	481,852
(Loss) income from operations	140,022	257,741	203,685	308,233
Loss on redemption of debt			(38,455)
Other expense, net	(38,241)	(26,735)	(78,023)	(56,908)
Income before provision for income tax	101,781	231,006	87,207	251,325
Provision for income tax (benefit) expense	16,283	44,473	22,840	49,018
Net income	85,498	186,533	64,367	202,307
Net (income) loss attributable to non-controlling interest	(1,799)	375	3,874	621
Net income attributable to the Partnership's unitholders	83,699	186,908	68,241	202,928
Parent
Operating expenses:
Selling, general and administrative expenses	12,074	12,539	24,108	26,956
Depreciation and amortization	242	148	519	312
Total operating expenses	12,316	12,687	24,627	27,268
(Loss) income from operations	(12,316)	(12,687)	(24,627)	(27,268)
Earnings from consolidated affiliates	132,913	217,483	202,874	273,914
Loss on redemption of debt			(38,455)
Other expense, net	(40,102)	(20,700)	(83,102)	(44,044)
Income before provision for income tax	80,495	184,096	56,690	202,602
Provision for income tax (benefit) expense	294	699	161	765
Net income	80,201	183,397	56,529	201,837
Net income attributable to the Partnership's unitholders	80,201	183,397	56,529	201,837
Guarantor Subsidiaries
Condensed Consolidating Statements of Operations
Total revenue	298,097	381,527	569,065	652,598
Operating expenses:
Purchased product costs	117,813	53,041	240,763	201,642
Facility expenses	34,497	33,111	66,775	67,047
Selling, general and administrative expenses	6,646	2,205	13,619	7,700
Depreciation and amortization	45,457	40,634	89,510	79,927
Other operating expenses (income)	573	628	1,338	1,739
Total operating expenses	204,986	129,619	412,005	358,055
(Loss) income from operations	93,111	251,908	157,060	294,543
Earnings from consolidated affiliates	62,611	13,960	81,729	37,746
Other expense, net	(6,820)	(4,611)	(13,236)	(10,122)
Income before provision for income tax	148,902	261,257	225,553	322,167
Provision for income tax (benefit) expense	15,989	43,774	22,679	48,253
Net income	132,913	217,483	202,874	273,914
Net income attributable to the Partnership's unitholders	132,913	217,483	202,874	273,914
Non-Guarantor Subsidiaries
Condensed Consolidating Statements of Operations
Total revenue	126,515	63,394	235,857	139,209
Operating expenses:
Purchased product costs	17,114	8,111	36,017	32,865
Facility expenses	29,485	14,129	56,387	26,772
Selling, general and administrative expenses	8,451	10,999	15,528	13,754
Depreciation and amortization	44,292	13,990	84,295	25,338
Other operating expenses (income)	(40,233)	874	(40,507)	985
Total operating expenses	59,109	48,103	151,720	99,714
(Loss) income from operations	67,406	15,291	84,137	39,495
Other expense, net	(2,997)	(1,705)	(6,282)	(2,370)
Income before provision for income tax	64,409	13,586	77,855	37,125
Net income	64,409	13,586	77,855	37,125
Net income attributable to the Partnership's unitholders	64,409	13,586	77,855	37,125
Consolidating Adjustments
Condensed Consolidating Statements of Operations
Total revenue	(9,492)	(2,099)	(16,529)	(1,722)
Operating expenses:
Facility expenses	(385)	(156)	(387)	(156)
Selling, general and administrative expenses	(1,672)	(4,043)	(2,514)	(1,662)
Depreciation and amortization	(1,337)	(1,129)	(2,823)	(1,367)
Other operating expenses (income)	2,081		2,080
Total operating expenses	(1,313)	(5,328)	(3,644)	(3,185)
(Loss) income from operations	(8,179)	3,229	(12,885)	1,463
Earnings from consolidated affiliates	(195,524)	(231,443)	(284,603)	(311,660)
Other expense, net	11,678	281	24,597	(372)
Income before provision for income tax	(192,025)	(227,933)	(272,891)	(310,569)
Net income	(192,025)	(227,933)	(272,891)	(310,569)
Net (income) loss attributable to non-controlling interest	(1,799)	375	3,874	621
Net income attributable to the Partnership's unitholders	$ (193,824)	$ (227,558)	$ (269,017)	$ (309,948)