Shareholders' Equity - OCI Components (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pretax
Total other comprehensive income (loss)	$ (1,289)	$ (462)	$ (3,614)	$ (692)
Income Tax Benefit (Expense)
Total other comprehensive income (loss)	290	101	817	162
Net of Tax
Arising during the period	(1,067)	36	(2,861)	(93)
Reclassification to net income	68	(397)	64	(437)
Total other comprehensive income (loss), net of tax	(999)	(361)	(2,797)	(530)
Net unrealized gains (losses) on securities:
Pretax
Total other comprehensive income (loss)	(1,130)	(434)	(3,241)	(702)
Income Tax Benefit (Expense)
Total other comprehensive income (loss)	257	95	739	164
Net of Tax
Arising during the period	(941)	58	(2,566)	(101)
Reclassification to net income	68	(397)	64	(437)
Total other comprehensive income (loss), net of tax	(873)	(339)	(2,502)	(538)
Net unrealized gains (losses) on securities arising during the period
Pretax
Arising during the period	(1,435)	(79)	(4,467)	(433)
Income Tax Benefit (Expense)
Arising during the period	321	21	996	108
Net of Tax
Arising during the period	(1,114)	(58)	(3,471)	(325)
Reclassification of net (gains) losses on securities included in net income
Pretax
Reclassification to net income	86	(502)	81	(553)
Income Tax Benefit (Expense)
Reclassification to net income	(18)	105	(17)	116
Net of Tax
Reclassification to net income	68	(397)	64	(437)
Impact of DAC, DSIC, unearned revenue, benefit reserves and reinsurance recoverables
Pretax
Arising during the period	219	147	1,145	284
Income Tax Benefit (Expense)
Arising during the period	(46)	(31)	(240)	(60)
Net of Tax
Arising during the period	173	116	905	224
Net unrealized gains (losses) on derivatives
Pretax
Arising during the period			(1)	0
Total other comprehensive income (loss)			(1)	0
Income Tax Benefit (Expense)
Arising during the period			0	0
Total other comprehensive income (loss)			0	0
Net of Tax
Arising during the period	0	0	(1)	0
Reclassification to net income	0	0	0	0
Total other comprehensive income (loss), net of tax	0	0	(1)	0
Defined benefit plans
Pretax
Arising during the period	1	0	1	37
Total other comprehensive income (loss)	1	0	1	37
Income Tax Benefit (Expense)
Arising during the period	0	0	0	(8)
Total other comprehensive income (loss)	0	0	0	(8)
Net of Tax
Arising during the period	1	0	1	29
Reclassification to net income	0	0	0	0
Total other comprehensive income (loss), net of tax	1	0	1	29
Foreign currency translation
Pretax
Total other comprehensive income (loss)	(160)	(28)	(373)	(27)
Income Tax Benefit (Expense)
Total other comprehensive income (loss)	33	6	78	6
Net of Tax
Arising during the period	(127)	(22)	(295)	(21)
Reclassification to net income	0	0	0	0
Total other comprehensive income (loss), net of tax	$ (127)	$ (22)	$ (295)	$ (21)