Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

The following table discloses supplemental cash flow information about cash paid for interest and income tax payments and refunds. Also disclosed is information about investing activities that affects recognized assets and liabilities but does not result in cash receipts or payments.

	Three months ended March 31,
In thousands	2015			2014
Supplemental cash flow information:
Cash paid for interest	$	51,790		$	52,194
Cash paid for income taxes	6			—
Cash received for income tax refunds	50,000			5
Non-cash investing activities:
Increase (decrease) in accrued capital expenditures	(260,204		)	47,508
Asset retirement obligation additions and revisions, net	2,703			1,270