Consolidated Statements of Stockholder's Equity (USD $) In Millions, except Share data	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2008	$ 1,798	$ 0	$ 1,268	$ 530	$ 0
Balance, shares at Dec. 31, 2008		1,000
Net income	128			128
Dividend paid to parent	(200)			(200)
Balance at Dec. 31, 2009	1,726	0	1,268	458	0
Balance, shares at Dec. 31, 2009		1,000
Net income	83			83
Dividend paid to parent, net of contribution	(75)			(75)
Balance at Dec. 31, 2010	1,734	0	1,268	466	0
Balance, shares at Dec. 31, 2010		1,000
Net income	69			69
Dividend paid to parent	(103)			(103)
Other comprehensive income	3				3
Balance at Dec. 31, 2011	$ 1,703	$ 0	$ 1,268	$ 432	$ 3
Balance, shares at Dec. 31, 2011		1,000