Fair Value Measurements - Carrying Values and Estimated Fair Values of our Financial Instruments not Measured at Fair value (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Assets:
Mortgage and other loans receivable	[1]	$ 4,286	$ 4,441
Other investments		14,440	6,368
Short-term investments	[1]	11,848	12,865
Cash		1,472	1,540	$ 1,424
Other assets	[1]	4,553	5,425
Liabilities:
Fortitude Re funds withheld payable		3,477	3,527
Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,892	10,375
Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	[1]	162	231
Estimated Fair Value
Assets:
Mortgage and other loans receivable		4,276	4,355
Other investments		588	651
Short-term investments		3,026	3,502
Cash		1,472	1,540
Other assets		15	32
Liabilities:
Fortitude Re funds withheld payable		3,477	3,675
Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,607	9,890
Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		162	231
Carrying Value
Assets:
Mortgage and other loans receivable		4,286	4,441
Other investments		588	651
Short-term investments		3,026	3,502
Cash		1,472	1,540
Other assets		15	32
Liabilities:
Fortitude Re funds withheld payable		3,477	3,675
Carrying Value | Assets and Liabilities Held for Sale
Assets:
Short-term investments		10
Cash		85
Carrying Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,892	10,375
Carrying Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		162	231
Level 1 | Estimated Fair Value
Assets:
Mortgage and other loans receivable		0	0
Other investments		0	0
Short-term investments		0	0
Cash		1,472	1,540
Other assets		15	32
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 | Estimated Fair Value
Assets:
Mortgage and other loans receivable		341	242
Other investments		583	645
Short-term investments		3,026	3,502
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		9,343	9,623
Level 2 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		0	0
Level 3 | Estimated Fair Value
Assets:
Mortgage and other loans receivable		3,935	4,113
Other investments		5	6
Short-term investments		0	0
Cash		0	0
Other assets		0	0
Liabilities:
Fortitude Re funds withheld payable		3,477	3,675
Level 3 | Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		264	267
Level 3 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		$ 162	$ 231

[1] See Note 10 for details of balances associated with variable interest entities.