Employee Benefit Arrangements - Obligations and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in plan assets:
Fair value of plan assets, beginning balance	$ 2,282
Fair value of plan assets, ending balance	1,770	$ 2,282
Pension Plan
Change in benefit obligation:
Benefits obligations, beginning balance	2,496	2,596
Service cost	28	27	$ 24
Interest cost	72	68	79
Net actuarial (gains) losses	(541)	(80)
Benefits paid	(112)	(114)
(Gain) loss recognized due to curtailment	0	(1)
Benefits obligations, ending balance	$ 1,943	$ 2,496	2,596
Discount rate, benefit obligation	5.47%	3.00%
Interest credit rate	3.00%	2.80%
Change in plan assets:
Fair value of plan assets, beginning balance	$ 2,283	$ 2,251
Actual return on plan assets	(427)	78
Employer contributions	26	68
Benefits paid	(112)	(114)
Fair value of plan assets, ending balance	1,770	2,283	$ 2,251
Funded status at end of the year	(173)	(213)
Actuarial gain (loss) due to discount rate	$ 571	$ 102
Increase in discount rate	2.47%
decrease in discount rate		0.33%
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	$ 173	$ 232
Accrued benefit cost	(346)	(445)
Net amount recognized	(173)	(213)
Pension Plan | Qualified Plan
Change in benefit obligation:
Benefits obligations, beginning balance	2,051
Benefits obligations, ending balance	1,597	2,051
Pension Plan | Nonqualified pension plan
Change in benefit obligation:
Benefits obligations, beginning balance	445
Benefits obligations, ending balance	$ 346	$ 445