Schedule of Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Indefinite-lived intangible assets	$ 76	$ 74
Finite-Lived Intangible Assets	88	85
Accumulated Amortization	70	66
Total other intangible assets	164	159
Total intangible assets, accumulated amortization	70	66
Lloyds syndicate capacity [Member]
Indefinite-lived intangible assets	60	58
Agency Force [Member]
Indefinite-lived intangible assets	16	16
Value of business acquired [Member]
Finite-Lived Intangible Assets	66	64
Accumulated Amortization	66	63
Trade name [Member]
Economic useful life measured in years	8 years
Finite-Lived Intangible Assets	8	8
Accumulated Amortization	2	2
Distribution channel [Member]
Economic useful life measured in years	15 years
Finite-Lived Intangible Assets	14	13
Accumulated Amortization	$ 2	$ 1
Minimum [Member] | Value of business acquired [Member]
Economic useful life measured in years	1 year
Maximum [Member] | Value of business acquired [Member]
Economic useful life measured in years	4 years