Policyholder Account Balances - Amounts on Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2024
Policyholder Account Balance [Line Items]
Policyholder account balance	$ 245,458	$ 236,857
Other Products
Policyholder Account Balance [Line Items]
Policyholder account balance	23,401	22,800
Group Life \| Group Benefits
Policyholder Account Balance [Line Items]
Policyholder account balance	11,109	11,005	$ 11,213
Capital Markets Investment Products and Stable Value GICs \| RIS
Policyholder Account Balance [Line Items]
Policyholder account balance	68,616	65,592	66,557	$ 63,715
Annuities and Risk Solutions \| RIS
Policyholder Account Balance [Line Items]
Policyholder account balance	29,122	26,406	25,183
Universal and Variable Universal Life \| Asia
Policyholder Account Balance [Line Items]
Policyholder account balance	55,090	54,374	53,564	50,801
Fixed Annuity \| Asia
Policyholder Account Balance [Line Items]
Policyholder account balance	45,099	43,188	41,419	$ 38,421
Fixed Annuity \| Corporate And Other
Policyholder Account Balance [Line Items]
Policyholder account balance	6,039	6,383	6,633
Life and Other \| Corporate And Other
Policyholder Account Balance [Line Items]
Policyholder account balance	$ 6,982	$ 7,109	$ 7,241