Commitments, Contingencies, And Guarantees (Narrative) (Detail) € in Millions, $ in Millions	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Financial Instruments Owned and Pledged as Collateral [Line Items]
Derivative liability subject to a master netting agreement	$ 139		$ 60
Hedged Liability, Fair Value Hedge	1,600	€ 1,500
Repurchase agreements	1,518		1,419
Purchase Commitment, Remaining Minimum Amount Committed	892		770
Carrying value of limited partnerships and partially-owned investment companies included in other investments	12,900		12,000
Funding commitments relating to limited partnerships and partially-owned investment companies	6,200		7,400
Unrecognized tax benefits	61
Operating Lease, Right-of-Use Asset	543		607
Operating Lease, Liability	$ 575		$ 633
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities	Other Liabilities
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets	Other assets