Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2015

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Reconciliation

Reconciliation of Cash Paid for Interest
	Three Months Ended March 31,
(In millions)	2015			2014
Interest expense	$	238		$	592
Adjustments to reconcile to cash paid for interest:
Net change in accrued interest	(30		)	(116		)
Capitalized interest	3			—
Amortization of debt issuance costs	(1		)	(9		)
Net amortization of discounts and premiums	(21		)	(81		)
Change in derivative instruments due to cash settlements	—			35
Other	(1		)	(1		)
Cash paid for interest	$	188		$	420