Schedule of Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Amortization of deferred acquisition costs	$ 1,362	$ 1,274		$ 1,176
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	4
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2
Hardy [Member]
Amortization of deferred acquisition costs	106	44	[1]
Other Intangible Assets [Member] | Hardy [Member]
Amortization of deferred acquisition costs	15	33
Amortization expense included in other operating expenses	$ 5	$ 10

[1] (b)Included from date of acquisition.