Guaranteed Benefit Features (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Guaranteed Benefit Features [Abstract]
Percent of permanent life insurance in force					38.00%
Percent of permanent life insurance sales	17.00%	32.00%	15.00%	32.00%