Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Cash and cash equivalents	$ 328,153	$ 345,756
Restricted cash	10,000	25,500
Receivables	235,630	197,977
Inventories	35,514	24,633
Other current assets	39,834	34,871
Property, plant and equipment	7,848,221	5,542,316
Accumulated depreciation	807,398	602,698
Accumulated amortization, intangibles	269,012	221,416
Accumulated amortization, deferred financing costs	23,449	18,567
Accumulated amortization, deferred contract cost	2,808	2,574
Other long-term assets	3,275	2,140
Accounts payable	420,087	320,627
Accrued liabilities	494,626	390,178
Long-term debt, discounts	7,113	8,061
Common Units
Common units issued (in units)	147,763	127,494
Common units outstanding (in units)	147,763	127,494
Class B Units
Common units issued (in units)	15,964	19,954
Common units outstanding (in units)	15,964	19,954
Total Variable Interest Entities
Cash and cash equivalents	312	31,584
Restricted cash	0	500
Receivables	4,666	403
Inventories	235	0
Other current assets	2,584	82
Property, plant and equipment	1,393,841	410,205
Accumulated depreciation	23,047	2,787
Other long-term assets	609	0
Accounts payable	87,209	73,865
Accrued liabilities	$ 116,824	$ 109,572