Business, Basis of Presentation and Significant Accounting Policies Assumptions and Yields (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Variable Products
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Long-term equity return assumptions rate	9.00%
Variable products, assumptions, lookforward period	5 years
Investment Contract
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Credited interest rate maximum on fixed annuities and payout contracts without life contingencies	5.70%	5.30%	5.30%
Minimum | Future Policy Benefits and Claims Reserves
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Future policy benefits, assumptions, discount rate	2.70%
Maximum | Variable Products
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Long-term equity return assumptions rate	14.00%
Maximum | Future Policy Benefits and Claims Reserves
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Future policy benefits, assumptions, discount rate	6.60%