Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Supplemental Cash Flow Information
Cash paid for interest, net of amounts capitalized	$ 111,626	$ 73,624
Cash (received) paid for income taxes, net	(16,414)	18,925
Supplemental schedule of non-cash investing and financing activities:
Accrued property, plant and equipment	614,355	389,599
Interest capitalized on construction in progress	26,232	16,353
Issuance of common units for vesting of share-based payment awards	$ 4,861	$ 2,506

Future cash outflow to pay for purchases of fixed assets that have occurred.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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