Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Cash and cash equivalents	$ 354,554	$ 345,756
Restricted cash	10,000	25,500
Receivables	232,668	197,977
Inventories	36,461	24,633
Other current assets	34,264	34,871
Property, plant and equipment	7,025,344	5,542,316
Accumulated depreciation	732,482	602,698
Accumulated amortization, intangibles	253,338	221,416
Accumulated amortization, deferred financing costs	21,829	18,567
Accumulated amortization, deferred contract cost	2,730	2,574
Other long-term assets	3,891	2,140
Accounts payable	296,559	320,627
Accrued liabilities	496,384	390,178
Long-term debt, discounts	7,296	8,061
Common Units
Common units issued (in units)	133,375	127,494
Common units outstanding (in units)	133,375	127,494
Class B Units
Common units issued (in units)	19,954	19,954
Common units outstanding (in units)	19,954	19,954
Total Variable Interest Entities
Cash and cash equivalents	74,381	31,584
Restricted cash	0	500
Receivables	1,759	403
Inventories	230	0
Other current assets	3,324	82
Property, plant and equipment	1,106,356	410,205
Accumulated depreciation	14,329	2,787
Other long-term assets	953	0
Accounts payable	74,008	73,865
Accrued liabilities	$ 158,324	$ 109,572