Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Elements [Abstract]

Net Changes In Components Of Operating Assets And Liabilities

	Year Ended December 31,
	2014			2013			2012
(Increase) decrease in:
Accounts receivable	$	95,014		$	(96,300	)	$	(34,299	)
Inventories	38,501			1,720			14,074
Deferred Charges	(8,935		)	—			—
Other current assets	62,305			(39,170		)	(9,593		)
Increase (decrease) in:
Accounts payable	(73,307		)	41,718			53,146
Accrued liabilities	(35,624		)	45,846			(10,263		)
Net changes in components of operating assets and liabilities	$	77,954		$	(46,186	)	$	13,065