CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Receivables, collateralizing long-term debt	$ 4,900	$ 5,300
Due to affiliate, carried at fair value	514	447
Long-term debt carried at fair value	9,700	13,700
Long-term debt collateralized by receivables	$ 2,900	$ 3,300
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100	100
Common stock, shares issued	68	68
Series B (1,501,100 shares authorized, $0.01 par value, 575,000 shares issued and outstanding)
Redeemable preferred stock, shares authorized	1,501,100	1,501,100
Redeemable preferred stock, par value	$ 0.01	$ 0.01
Redeemable preferred stock, shares issued	575,000	575,000
Redeemable preferred stock, shares outstanding	575,000	575,000
Series C (1,000 shares authorized, $0.01 par value, 1,000 shares issued and outstanding)
Redeemable preferred stock, shares authorized	1,000	1,000
Redeemable preferred stock, par value	$ 0.01	$ 0.01
Redeemable preferred stock, shares issued	1,000	1,000
Redeemable preferred stock, shares outstanding	1,000	1,000