Segment Information - Total Assets (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Summary of assets by segment
Total assets	$ 140,250	$ 145,319
Advice & Wealth Management [Member]
Summary of assets by segment
Total assets	11,534	11,338
Asset Management [Member]
Summary of assets by segment
Total assets	7,755	7,931
Annuities [Member]
Summary of assets by segment
Total assets	95,156	94,002
Protection [Member]
Summary of assets by segment
Total assets	21,082	20,755
Corporate & Other [Member]
Summary of assets by segment
Total assets	$ 4,723	$ 11,293