Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements Of Cash Flows
CASH FLOWS PROVIDED BY OPERATING ACTIVITIES	$ 261,385	$ 258,867
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(142,433)	(174,848)
Changes in accounts payable and accrued liabilities	(5,524)	(9,913)
Proceeds from sale of property, plant and equipment	122	102
Receipts of prior advances on Gibson rail project	810	1,032
Net cash used in investing activities	(147,025)	(183,627)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facilities		66,500
Payments under revolving credit facilities		(61,500)
Payments on capital lease obligations	(379)	(160)
Net settlement of employee withholding taxes on vesting of Long-Term Incentive Plan	(2,324)	(1,265)
Cash contributions by General Partners	87	43
Distributions paid to Partners	(104,195)	(90,412)
Net cash used in financing activities	(106,811)	(86,794)
EFFECT OF CURRENCY TRANSLATION ON CASH		(333)
NET CHANGE IN CASH AND CASH EQUIVALENTS	7,549	(11,887)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	339,562	21,556
CASH AND CASH EQUIVALENTS AT END OF PERIOD	347,111	9,669
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	17,433	15,424
Cash paid for income taxes	300	253
NON-CASH INVESTING AND FINANCING ACTIVITY:
Accounts payable for purchase of property, plant and equipment	18,863	10,905
Market value of common units issued under Long-Term Incentive Plan before minimum statutory tax withholding requirements	6,572	3,396
Assets acquired by capital lease	$ 3,525