CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Income and Comprehensive Income
Net income (loss)	$ 31us-gaap_NetIncomeLoss	$ (35)us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:
Actuarial gain (loss) relating to postretirement benefits	0	(1)
Total other comprehensive income, net of tax	0	(1)
Comprehensive income (loss)	$ 31us-gaap_ComprehensiveIncomeNetOfTax	$ (36)us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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