Variable Interest Entities (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Balance sheet
Cash and cash equivalents	$ 85,305	$ 345,756	$ 114,332	$ 64,537
Receivables, net	299,107	197,977
Other current assets	44,068	34,871
Total current assets	514,500	653,522
Property, plant and equipment	8,583,767	5,542,316
Less: accumulated depreciation	(890,598)	(602,698)
Total property, plant and equipment, net	7,693,169	4,939,618
Investment in unconsolidated affiliates	75,627	63,054
Other long-term assets	3,887	2,140
Total assets	9,396,423	6,728,362
Accounts payable	401,088	320,627
Accrued liabilities	437,847	390,178
Total current liabilities	867,773	738,034
Deferred income taxes		189,428
Other long-term liabilities	156,500	134,261
Non-controlling interest in consolidated subsidiaries	719,813	261,463
Total equity	4,798,133	3,111,398	1,395,242	1,350,294
Total liabilities and equity	9,396,423	6,728,362
Common units
Balance sheet
Common units	3,476,295	2,097,404
Total equity	3,476,295	2,097,404	642,522	957,452
As previously reported
Balance sheet
Cash and cash equivalents		347,899	117,016	67,450
Receivables, net		198,769
Other current assets		35,053
Total current assets		656,639
Property, plant and equipment		5,700,176
Less: accumulated depreciation		(624,548)
Total property, plant and equipment, net		5,075,628
Investment in unconsolidated affiliates		31,179
Other long-term assets		2,242
Total assets		6,835,716
Accounts payable		320,645
Accrued liabilities		391,352
Total current liabilities		739,226
Deferred income taxes		191,318
Other long-term liabilities		134,340
Non-controlling interest in consolidated subsidiaries		328,346
Total equity		3,215,591	1,502,067	1,458,566
Total liabilities and equity		6,835,716
As previously reported | Common units
Balance sheet
Common units		2,134,714
Total equity		$ 2,134,714	$ 679,309	$ 993,049