Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Insurance reserves	$ 296	$ 1,693
Policyholders’ dividends	1,741	1,901
Net operating and capital loss carryforwards	260	205
Employee benefits	617	929
Investments	398	0
Goodwill and other intangibles	149	0
Other	0	404
Deferred tax assets before valuation allowance	3,461	5,132
Valuation allowance	(147)	(143)	$ (136)	$ (117)
Deferred tax assets after valuation allowance	3,314	4,989
Deferred tax liabilities:
Net unrealized investment gains	9,456	13,841
Deferred policy acquisition costs	3,307	3,430
Investments	0	43
Value of business acquired	261	270
Goodwill and other intangibles	0	29
Other	116	0
Deferred tax liabilities	13,140	17,613
Net deferred tax liability	$ (9,826)	$ (12,624)