Insurance (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statutory Accounting Practices [Line Items]
Assets Held by Insurance Regulators	$ 14	$ 13
Insurance Expenses [Abstract]
Insurance losses	70	75	77
Loss adjustment expenses	6	4	6
Reinsurance Income and Other Expenses, Net	(13)	(9)	(3)
Insurance expenses	63	70	80
Liability for reported insurance claims and estimate of unreported claims	11	6
Ceded insurance expenses	64	64	74
Premiums Written and Earned [Abstract]
Direct premiums written	270	234	219
Assumed premiums written	0	2	8
Ceded premiums written	(151)	(136)	(137)
Net premiums written	119	100	90
Direct premiums earned	216	202	205
Assumed premiums earned	0	2	8
Ceded premiums earned	(97)	(99)	(113)
Net premiums earned	$ 119	$ 105	$ 100