Consolidated Statements of Changes in Shareholder's Equity (USD $) In Millions, except Share data, unless otherwise specified	Total	Common Stock	Other Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss, Net
Balance at Dec. 31, 2013	$ 1,016	$ 0	$ 1,111	$ (93)	$ (2)
Balance (shares) at Dec. 31, 2013		1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22			22
Stockholders' Equity, Other	(1)				1
Balance at Mar. 31, 2014	1,039	0	1,111	(71)	(1)
Balance (shares) at Mar. 31, 2014		1,000
Balance at Dec. 31, 2014	998	0	1,111	(111)	(2)
Balance (shares) at Dec. 31, 2014	1,000	1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19			19
Balance at Mar. 31, 2015	$ 1,017	$ 0	$ 1,111	$ (92)	$ (2)
Balance (shares) at Mar. 31, 2015	1,000	1,000