Schedule of Other Intangible Assets (Narrative) (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
Amortization of deferred acquisition costs	$ 335	$ 335	$ 664	$ 663
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1		1
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2		2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	2		2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2		2
Hardy [Member]
Amortization of deferred acquisition costs	26	20	54	41
Other Intangible Assets [Member] | Hardy [Member]
Amortization of deferred acquisition costs	1	4	1	13
Amortization expense included in other operating expenses	$ 1	$ 2	$ 1	$ 5