Schedule IV (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Life insurance in-force
Gross amount	$ 105,704	$ 118,328	$ 142,233
Ceded	63,548	72,188	88,435
Assumed	16,358	17,034	18,206
Net amount	$ 58,514	$ 63,174	$ 72,004
% Amount assumed to net	28.00%	27.00%	25.30%
Insurance premium
Gross Amount	$ 392	$ 309	$ 558
Ceded	301	196	447
Assumed	42	47	456
Premiums	$ 133	$ 160	$ 567
% Amount assumed to net	31.60%	29.50%	80.40%
Life insurance
Insurance premium
Gross Amount	$ 354	$ 273	$ 518
Ceded	247	142	387
Assumed	38	42	44
Premiums	$ 145	$ 173	$ 175
% Amount assumed to net	26.20%	24.50%	25.40%
Group payout annuity
Insurance premium
Gross Amount			$ 0
Ceded			0
Assumed			406
Premiums			406
Accident and health
Insurance premium
Gross Amount	$ 38	$ 36	40
Ceded	42	41	46
Assumed	4	5	6
Premiums	0	0	0
Annuity guaranteed benefits
Insurance premium
Gross Amount	0	0	0
Ceded	12	13	14
Assumed	0	0	0
Premiums	$ (12)	$ (13)	$ (14)