Fair Value Measurements - Carrying Values and Estimated Fair Values of our Financial Instruments not Measured at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Assets:
Mortgage and other loans receivable	$ 2,887	$ 3,868
Other investments	6,696	9,828
Short-term investments	11,141	14,462
Cash	1,274	1,302	$ 1,540
Other assets	4,773	4,735
Liabilities:
Fortitude Re funds withheld payable	3,038	3,207
Long-term debt	9,191	8,922
Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	9,035	8,764
Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	156	158
Estimated Fair Value
Assets:
Mortgage and other loans receivable	2,834	3,752
Other investments	493	583
Short-term investments	5,232	4,673
Cash	1,274	1,302
Other assets	16	15
Liabilities:
Fortitude Re funds withheld payable	3,130	3,335
Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	8,702	8,221
Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	156	158
Carrying Value
Assets:
Mortgage and other loans receivable	2,887	3,868
Other investments	493	583
Short-term investments	5,232	4,673
Cash	1,274	1,302
Other assets	16	15
Liabilities:
Fortitude Re funds withheld payable	3,130	3,335
Carrying Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	9,035	8,764
Carrying Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	156	158
Level 1
Assets:
Short-term investments	4,106	7,942
Liabilities:
Fortitude Re funds withheld payable	0	0
Level 1 | Estimated Fair Value
Assets:
Mortgage and other loans receivable	0	0
Other investments	0	0
Short-term investments	0	0
Cash	1,274	1,302
Other assets	16	15
Liabilities:
Fortitude Re funds withheld payable	0	0
Level 1 | Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	0	0
Level 1 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	0	0
Level 2
Assets:
Short-term investments	1,803	1,847
Liabilities:
Fortitude Re funds withheld payable	0	0
Level 2 | Estimated Fair Value
Assets:
Mortgage and other loans receivable	334	339
Other investments	480	578
Short-term investments	5,232	4,673
Cash	0	0
Other assets	0	0
Liabilities:
Fortitude Re funds withheld payable	0	0
Level 2 | Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	8,702	7,981
Level 2 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	0	0
Level 3
Assets:
Short-term investments	0	0
Liabilities:
Fortitude Re funds withheld payable	92	128
Level 3 | Estimated Fair Value
Assets:
Mortgage and other loans receivable	2,500	3,413
Other investments	13	5
Short-term investments	0	0
Cash	0	0
Other assets	0	0
Liabilities:
Fortitude Re funds withheld payable	3,130	3,335
Level 3 | Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt	0	240
Level 3 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	$ 156	$ 158