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, 2012	$ 1,039	$ 0	$ 1,111	$ (71)	$ (1)
Balance (shares) at Dec. 31, 2012		1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33			33
Dividends, Common Stock, Cash	(20)			(20)
Balance at Jun. 30, 2013	1,052	0	1,111	(58)	(1)
Balance (shares) at Jun. 30, 2013		1,000
Balance at Dec. 31, 2013	1,016	0	1,111	(93)	(2)
Balance (shares) at Dec. 31, 2013	1,000	1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36			36
Balance at Jun. 30, 2014	$ 1,052	$ 0	$ 1,111	$ (57)	$ (2)
Balance (shares) at Jun. 30, 2014	1,000	1,000