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Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Cash Flow Information
Cash paid for interest, net of amounts capitalized	$ 60,835	$ 61,543
Cash (received) paid for income taxes, net	(16,591)	18,425
Supplemental schedule of non-cash investing and financing activities:
Accrued property, plant and equipment	524,445	236,495
Interest capitalized on construction in progress	19,090	8,048
Issuance of common units for vesting of share-based payment awards	$ 4,495	$ 2,501

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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- Definition

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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