Separate Accounts - Narrative (Details)	12 Months Ended
	Dec. 31, 2019
Separate Accounts Narrative [Abstract]
Separate accounts contract's minimum guaranteed payments, percentage of policyholder's contribution	75.00%
Separate accounts contract minimum maturity, years	10 years
Separate accounts contract maximum maturity, date	Dec. 31, 2070
Separate accounts contract maturity, years	20 years
Separate accounts contracts minimum guaranteed payments, decline in percentage of policyholder's contribution	25.00%