STATEMENTS OF CONSOLIDATED MEMBER'S EQUITY (USD $) In Millions, except Share data	Total	Preference Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Balance, beginning of year at Dec. 31, 2009				$ 0	$ 1,230	$ 618
Balance (in shares) at Dec. 31, 2009				1,000
Other					0
Net Income	200					200
Dividend to parent						0
Balance, end of year at Dec. 31, 2010	2,048	0	0	0	1,230	818
Balance (in shares) at Dec. 31, 2010		0	0	1,000
Other					0
Net Income	1,086					1,086
Dividend to parent						0
Balance, end of year at Dec. 31, 2011	3,134	0	0	0	1,230	1,904
Balance (in shares) at Dec. 31, 2011		0	0	1,000
Other					1
Net Income	279					279
Dividend to parent						(1,685)
Balance, end of year at Dec. 31, 2012	$ 1,729	$ 0	$ 0	$ 0	$ 1,231	$ 498
Balance (in shares) at Dec. 31, 2012		0	0	1,000