Fair Value Measurements - Carrying Values and Estimated Fair Values of our Financial Instruments not Measured at Fair value (Details) - USD ($) $ in Millions		Jun. 30, 2024		Dec. 31, 2023		Jun. 30, 2023
Assets:
Mortgage and other loans receivable	[1]	$ 4,347		$ 4,441
Other investments	[1]	14,788		6,368
Short-term investments	[1]	12,563		12,865
Cash		1,381	[1]	1,540	[1]	$ 1,531
Other assets	[1]	4,717		5,425
Liabilities:
Fortitude Re funds withheld payable		3,364		3,527
Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,861		10,375
Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt	[1]	79		231
Estimated Fair Value
Assets:
Mortgage and other loans receivable		4,212		4,355
Other investments		597		651
Short-term investments		4,426		3,502
Cash		1,381		1,540
Other assets		18		32
Liabilities:
Fortitude Re funds withheld payable		3,518		3,675
Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,102		9,890
Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		79		231
Carrying Value
Assets:
Mortgage and other loans receivable		4,347		4,441
Other investments		597		651
Short-term investments		4,426		3,502
Cash		1,381		1,540
Other assets		18		32
Liabilities:
Fortitude Re funds withheld payable		3,518		3,675
Carrying Value | Assets and Liabilities Held for Sale
Assets:
Short-term investments		7
Cash		90
Carrying Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		9,861		10,375
Carrying Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		79		231
Level 1 | Estimated Fair Value
Assets:
Mortgage and other loans receivable		0		0
Other investments		0		0
Short-term investments		0		0
Cash		1,381		1,540
Other assets		18		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		591		645
Short-term investments		4,426		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		8,867		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		3,871		4,113
Other investments		6		6
Short-term investments		0		0
Cash		0		0
Other assets		0		0
Liabilities:
Fortitude Re funds withheld payable		3,518		3,675
Level 3 | Estimated Fair Value | Consolidated Entities, Excluding Consolidated Investments
Liabilities:
Long-term debt		235		267
Level 3 | Estimated Fair Value | Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Liabilities:
Long-term debt		$ 79		$ 231

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