Guaranteed Benefit Features (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Guaranteed Benefit Features [Abstract]
Percent of permanent life insurance in force	36.00%		36.00%		35.00%
Percent of permanent life insurance sales	32.00%	25.00%	32.00%	28.00%