Discontinued and Held-for-sale Operations (Selected Income Statement Information for Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest in Joint Venture	40.00%		40.00%
Mortgage Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	$ 0	$ 0	$ 0	$ 0
Pretax income (loss) including direct costs to transact a sale	(1)	(1,584)	(3)	(1,604)
Tax (benefit) expense - Discontinued Operations	(1)	(549)	(1)	(533)
Insurance Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	0	42	0	190
Pretax income (loss) including direct costs to transact a sale	0	286	0	314
Tax (benefit) expense - Discontinued Operations	0	(16)	0	(15)
Automotive finance operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	33	83	66	369
Pretax income (loss) including direct costs to transact a sale	25	(348)	55	694
Tax (benefit) expense - Discontinued Operations	5	(52)	4	(53)
Commercial Finance Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	0	0	0	0
Pretax income (loss) including direct costs to transact a sale	23	2	23	1
Tax (benefit) expense - Discontinued Operations	$ 3	$ 0	$ 3	$ 0