Component of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ 2,610	$ 3,675	$ 3,861	$ 4,425
OCI before reclassifications		(2,750)	193	(4,011)	(372)
Amounts reclassified from (to) OCI		(33)	(34)	(64)	(72)
Total other comprehensive income (loss)		(2,783)	159	(4,075)	(444)
Balances before nonnontrolling interests		(173)	3,834	(214)	3,981
Less: change in OCI attributable to noncontrolling interests		(28)	0	(69)	147
Ending balance		(145)	3,834	(145)	3,834
Net unrealized investment gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	850	1,919	1,860	2,214
OCI before reclassifications	[1]	(2,436)	(54)	(3,493)	(370)
Amounts reclassified from (to) OCI	[1]	4	0	10	(4)
Total other comprehensive income (loss)	[1]	(2,432)	(54)	(3,483)	(374)
Balances before nonnontrolling interests	[1]	(1,582)	1,865	(1,623)	1,840
Less: change in OCI attributable to noncontrolling interests	[1]	(28)	0	(69)	(25)
Ending balance	[1]	(1,554)	1,865	(1,554)	1,865
Derivatives qualifying as hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[2]	1,789	1,792	2,025	2,211
OCI before reclassifications	[2]	(307)	245	(506)	(140)
Amounts reclassified from (to) OCI	[2]	(37)	(34)	(74)	(68)
Total other comprehensive income (loss)	[2]	(344)	211	(580)	(208)
Balances before nonnontrolling interests	[2]	1,445	2,003	1,445	2,003
Less: change in OCI attributable to noncontrolling interests	[2]	0	0	0	0
Ending balance	[2]	1,445	2,003	1,445	2,003
Foreign currency translation and other adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(29)	(36)	(24)	0
OCI before reclassifications		(7)	2	(12)	138
Amounts reclassified from (to) OCI		0	0	0	0
Total other comprehensive income (loss)		(7)	2	(12)	138
Balances before nonnontrolling interests		(36)	(34)	(36)	138
Less: change in OCI attributable to noncontrolling interests		0	0	0	172
Ending balance		$ (36)	$ (34)	$ (36)	$ (34)

[1] Net of adjustments to DAC, present value of future profits, sales inducements and benefit reserves. See note 4 for additional information.

[2] See note 5 for additional information.