Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Income and Expenses [Abstract]
Compensation	$ 1,258	$ 1,210	$ 2,549	$ 2,415
Pension, postretirement and postemployment benefit costs	105	117	197	237
Commissions	1,122	1,302	2,279	2,590
Volume-related costs	255	211	497	412
Capitalization of DAC	(927)	(1,032)	(1,895)	(2,078)
Amortization of DAC and VOBA	897	1,062	1,922	2,120
Amortization of negative VOBA	(92)	(111)	(192)	(226)
Interest expense on debt	308	312	606	624
Premium taxes, licenses and fees	196	195	369	420
Professional services	383	366	713	687
Rent and related expenses, net of sublease income	84	93	167	178
Other	483	497	920	1,006
Total other expenses	$ 4,072	$ 4,222	$ 8,132	$ 8,385