Statement of Financial Position (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Preferred Stock, Value, Issued	$ 0	$ 0
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	750,000	750,000
Preferred Stock, Shares Issued	40,000	0
Preferred Stock, Shares Outstanding	40,000	0
Common Stock, Par or Stated Value Per Share	$ 14	$ 14
Common Stock, Shares Authorized	4,166,000	4,166,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000
Assets of consolidated variable interest entities that can only be used to settle the liabilities of those VIEs	45,814
Net financing receivables of certain VIEs that can only be used to settle the liabilities of those VIEs	40,287
Investment securities of certain VIEs that can only be used to settle the liabilities of those VIEs	3,419
Nonrecourse Borrowings Of Consolidated Securitization Entities Where VIE Creditors Do Not Have Recourse To Company	29,123
Sum of accumulated other comprehensive income - net	(940)	(2,096)
Accumulated other comprehensive income - net attributable to noncontrolling interests	$ (129)	$ (141)