Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Information [Abstract]

Cash Flow, Supplemental Disclosure

Note 13. Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Year Ended December 31,
In thousands	2014			2013			2012
Supplemental cash flow information
Cash paid for interest, expensed	$	185,140		$	117,442		$	137,950
Cash paid for interest, capitalized	24,202			79,253			77,432
Cash paid for income taxes	5,033			28,895			99,194
Cash received from income tax refunds	(13,193		)	(17,087		)	(38,004		)
Noncash investing activities
Increase in asset retirement obligations	6,500			26,946			56,290
Increase (decrease) in liabilities for capital expenditures	215			(18,321		)	(26,882		)
Increase in restricted cash (1)	—			—			1,262,559
Decrease in restricted cash (2)	—			1,050,328			212,544

(1) During 2012, $212.5 million of proceeds from the sale of certain non-core assets in the Gulf Coast Region and $1.05 billion of the cash proceeds from the Bakken Exchange Transaction were paid by the respective purchaser directly to a qualified intermediary to facilitate a like-kind-exchange transaction for federal income tax purposes.

(2) During 2012 and 2013, proceeds from the sales of our oil and natural gas property dispositions in 2012, which were held by a qualified intermediary, were released in 2012 to fund the Thompson Field acquisition and in 2013 primarily to fund a portion of the CCA acquisition and certain post-closing costs under the Bakken Exchange Transaction.