Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Income and Expenses [Abstract]
Compensation	$ 1,189	$ 1,258	$ 2,499	$ 2,549
Pension, postretirement and postemployment benefit costs	103	105	243	197
Commissions	1,094	1,122	2,228	2,279
Volume-related costs	214	255	480	497
Capitalization of DAC	(915)	(927)	(1,896)	(1,895)
Amortization of DAC and VOBA	121	897	1,116	1,922
Amortization of negative VOBA	(67)	(92)	(166)	(192)
Interest expense on debt	306	308	618	606
Premium taxes, licenses and fees	189	196	404	369
Professional services	398	383	728	713
Rent and related expenses, net of sublease income	98	84	195	167
Other	516	483	989	920
Total other expenses	$ 3,246	$ 4,072	$ 7,438	$ 8,132