Segment Information - Total Assets (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Summary of assets by segment
Total assets	$ 142,684	$ 145,319
Advice & Wealth Management [Member]
Summary of assets by segment
Total assets	11,738	11,338
Asset Management [Member]
Summary of assets by segment
Total assets	8,318	7,931
Annuities [Member]
Summary of assets by segment
Total assets	96,009	94,002
Protection [Member]
Summary of assets by segment
Total assets	22,026	20,755
Corporate & Other [Member]
Summary of assets by segment
Total assets	$ 4,593	$ 11,293