Consolidated Statement of Financial Position (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Accumulated amortization	$ 16,651	$ 16,462
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	750,000	750,000
Preferred Stock, Shares Issued	50,000	50,000
Preferred Stock, Shares Outstanding	50,000	50,000
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	$ 41,815
Assets of discontinued operations of certain VIEs that can only be used to settle liabilities of those VIEs	11,427
Current receivables and net financing receivables of certain VIEs that can only be used to settle liabilities of those VIEs	27,701
Investment securities of certain VIEs that can only be used to settle the liabilities of those VIEs	1,412
Nonrecourse Borrowings Of Consolidated Securitization Entities Where VIE Creditors Do Not Have Recourse To Company	16,225
Nonrecourse borrowings of discontinued operations of securitization entities where VIE creditors do not have recourse to company	8,072
Sum of accumulated other comprehensive income - net	(1,593)	$ (577)
Accumulated other comprehensive income - net attributable to noncontrolling interests	$ (178)	$ (154)