Intangible Assets - Carrying Amounts of Identifiable Intangible Assets (Parenthetical) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($)
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquisition	$ 1,222
Preqin [Member] | Customer Relationships [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquisition	1,100
Preqin [Member] | Trade Names [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquisition	7
Preqin [Member] | Technology-Based Intangible Assets [Member]
Schedule Of Intangible Assets [Line Items]
Finite-lived intangible assets, acquisition	$ 125