Future Policy Benefits - FPB on Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Net liability for FPBs	$ 206,150	$ 208,855
Fixed & Immediate Annuities \| RIS
Net liability for FPBs	78,936	79,523	$ 68,193
Whole and Term Life & Endowments \| Asia
Net liability for FPBs	8,565	10,140	11,844
Accident & health insurance \| Asia
Net liability for FPBs	6,822	7,913	9,395
Fixed Annuity \| Latin America
Net liability for FPBs	12,608	12,336	10,964
Long-term Care \| Corporate And Other
Net liability for FPBs	15,345	15,224	$ 14,803
Fixed & Immediate Annuities for Deferred Profit Liabilities \| RIS
Net liability for FPBs	3,859	3,855
Whole and Term Life & Endowments for Deferred Profit Liabilities \| Asia
Net liability for FPBs	948	919
Accident and Health Insurance Product Line for Deferred Profit Liabilities \| Asia
Net liability for FPBs	992	993
Fixed Annuity for Deferred Profit Liabilities \| Latin America
Net liability for FPBs	555	562
Variable Life \| Asia
Net liability for FPBs	1,025	1,074
Universal and Variable Universal Life \| Asia
Net liability for FPBs	318	330
Universal and Variable Universal Life \| Corporate And Other
Net liability for FPBs	2,766	2,713
Participating Life Insurance Contract \| Corporate And Other
Net liability for FPBs	46,738	47,359
Long-Duration Insurance, Other
Net liability for FPBs	11,300	11,148
Short-Duration Insurance, Other
Net liability for FPBs	$ 15,373	$ 14,766