Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Available-for-sale securities	$ 116,636	$ 106,859
AFS securities allowance for credit losses	629	123	$ 109
Mortgage loans, net of allowances		24,148
Investment funds	11,165	9,866
Accrued investment income, related party	1,086	962
Reinsurance recoverable, fair value portion	4,437	4,594
Other assets, consolidated variable interest entities	8,947	1,257
Interest sensitive contract liabilities	164,571	156,325
Future policy benefits	52,478	42,488
Other liabilities	2,893	3,214
Accumulated other comprehensive income (loss) (related party: 2022 – $(323) and 2021 – $33)	(9,787)	2,430	3,337
Variable Interest Entities
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances	1,992	2,040
Mortgage loans allowance for credit losses		78
Investment funds	9,494	1,297
Other investments	111	0
Other assets, consolidated variable interest entities	66	32
Other liabilities	408	461
Related Party
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Available-for-sale securities	9,429	10,401
AFS securities allowance for credit losses	20	0
Equity securities, at fair value	163	284
Mortgage loans, net of allowances	1,416	1,360
Mortgage loans allowance for credit losses		5
Investment funds	818	2,958
Investment funds	1,538	7,391
Funds withheld at interest	(10,675)	(12,207)
Other investments	272	222
Accrued investment income, related party	76	54
Other assets, consolidated variable interest entities	83	0
Interest sensitive contract liabilities	12,653	12,948
Future policy benefits	2,078	1,853
Other liabilities	219	936
Accumulated other comprehensive income (loss) (related party: 2022 – $(323) and 2021 – $33)	(323)	33
Consolidated Entity, excluding Affiliated Entity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Available-for-sale securities	107,207	96,458
AFS securities allowance for credit losses	609	123	107
Mortgage loans, net of allowances	25,218	20,748
Mortgage loans allowance for credit losses		154
Investment funds	25	183
Investment funds	133	1,178
Funds withheld at interest	(37,638)	(43,907)
Short-term Investments, fair value portion	264	139
Other investments	855	1,473
Consolidated Entity, Affiliated Entity and VIE Primary Beneficiary
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances		231	$ 387
Investment funds	$ 8,684	$ 1,068
Preference Share, Series A
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Preferred stock, par value (in USD per share)	$ 1	$ 1
Aggregate liquidation preference	$ 863	$ 863
Preferred stock, authorized (in shares)	0.0	0.0
preferred stock, issued (in shares)	0.0	0.0
Preferred stock, outstanding (in shares)	0.0	0.0
Preference Share, Series B
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Preferred stock, par value (in USD per share)	$ 1	$ 1
Aggregate liquidation preference	$ 345	$ 345
Preferred stock, authorized (in shares)	0.0	0.0
preferred stock, issued (in shares)	0.0	0.0
Preferred stock, outstanding (in shares)	0.0	0.0
Preference Share, Series C
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Preferred stock, par value (in USD per share)	$ 1	$ 1
Aggregate liquidation preference	$ 600	$ 600
Preferred stock, authorized (in shares)	0.0	0.0
preferred stock, issued (in shares)	0.0	0.0
Preferred stock, outstanding (in shares)	0.0	0.0
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	425.0	425.0
Common stock issued (in shares)	203.8	192.2
Common stock outstanding (in shares)	203.8	192.2
Series D Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Preferred stock, par value (in USD per share)	$ 1	$ 1
Aggregate liquidation preference	$ 575	$ 575
Preferred stock, authorized (in shares)	0.0	0.0
preferred stock, issued (in shares)	0.0	0.0
Preferred stock, outstanding (in shares)	0.0	0.0
Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Interest sensitive contract liabilities	$ 105,039	$ 108,621
Fair Value | Variable Interest Entities
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances	366	2,152
Other investments	80
Fair Value | Related Party
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances		1,369
Investment funds	720	4,433
Funds withheld at interest	(11,804)	(11,629)
Other investments	272	223
Fair Value | Consolidated Entity, excluding Affiliated Entity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances		21,138
Investment funds	108	995
Funds withheld at interest	(41,596)	(43,125)
Short-term Investments, fair value portion	26
Other investments	713	1,343
Recurring
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Investment funds		268
Recurring | Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Reinsurance recoverable, fair value portion	1,580	1,991
Interest sensitive contract liabilities	6,394	16,142
Future policy benefits	1,870	2,262
Recurring | Fair Value | Investments, excluding investments in Related Party
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Equity securities, at fair value	1,108	1,170
Short-term Investments, fair value portion	238	139
Recurring | Fair Value | Variable Interest Entities
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Mortgage loans, net of allowances	1,626	0
Investment funds	9,494	1,297
Other investments	31	0
Recurring | Fair Value | Related Party
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Equity securities, at fair value	163	284
Mortgage loans, net of allowances	1,416	0
Investment funds	818	2,958
Funds withheld at interest	(1,129)	(578)
Recurring | Fair Value | Consolidated Entity, excluding Affiliated Entity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Equity securities, at fair value	1,108	1,170
Mortgage loans, net of allowances	25,218	17
Investment funds	25	183
Funds withheld at interest	3,958	(782)
Short-term Investments, fair value portion	238	139
Other investments	$ 142	$ 130