Reinsurance - Life Insurance Ceded Business (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reinsurance for Insurance Companies, by Product Segment
Insurance losses and contract holders' benefits	$ 1,309	$ 915	$ 2,348	$ 1,918
Life Insurance Segment
Reinsurance for Insurance Companies, by Product Segment
Direct earned premiums	96	98	186	185
Ceded earned premiums	(20)	(19)	(38)	(37)
Earned premiums	76	79	148	148
Direct contract holders' benefits incurred	91	100	205	207
Ceded contract holders' benefits incurred	(22)	(15)	(53)	(42)
Insurance losses and contract holders' benefits	$ 69	$ 85	$ 152	$ 165

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Amount of earned premiums ceded to other entities.

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Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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