Segment Information (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Summary of assets by segment
Total assets	$ 137,216	$ 147,480
Advice & Wealth Management [Member]
Summary of assets by segment
Total assets	14,480	13,270
Asset Management [Member]
Summary of assets by segment
Total assets	7,558	8,401
Annuities [Member]
Summary of assets by segment
Total assets	88,771	98,276
Protection [Member]
Summary of assets by segment
Total assets	17,126	18,039
Corporate & Other [Member]
Summary of assets by segment
Total assets	$ 9,281	$ 9,494