Schedule of Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Amortization of deferred acquisition costs	$ 332	$ 341	$ 996	$ 1,004
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	1		1
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	1		1
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2		2
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	27	25	81	66
Other Intangible Assets [Member] | Hardy [Member]
Amortization of deferred acquisition costs	1	1	2	14
Amortization expense included in other operating expenses		$ (1)	$ 1	$ 4