Commitments and Contingencies - Additional Information (Detail) - USD ($) shares in Millions		3 Months Ended	9 Months Ended
	Jul. 01, 2025	Sep. 30, 2026	Sep. 30, 2026	Jul. 01, 2026
Loss Contingencies [Line Items]
Investment commitments		$ 2,600,000,000	$ 2,600,000,000
Amount of securities on loan subject to indemnification		441,000,000,000	441,000,000,000
Collateral for indemnified securities		474,000,000,000	474,000,000,000
Contingent consideration at fair value		5,900,000,000	5,900,000,000
Fair value of indemnified securities			0
Subco Units [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Contingent payments	2.8
Subco Units [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Contingent payments	4.4
Global Infrastructure Management
Loss Contingencies [Line Items]
Fair value of deferred stock		4,750,000,000	$ 4,750,000,000
Global Infrastructure Management \| First contingent payment [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Contingent payments			4.0
Global Infrastructure Management \| First contingent payment [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Contingent payments			5.2
HPS Investment Partners
Loss Contingencies [Line Items]
Fair value of deferred stock		$ 900,000,000	$ 900,000,000
HPS Investment Partners \| Subco Units [Member]
Loss Contingencies [Line Items]
Contingent payments		2.8
Contingent consideration liability fair value		$ 2,600,000,000	$ 2,600,000,000	$ 2,600,000,000
HPS Investment Partners \| Subco Units [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Contingent payments	2.8		2.8
HPS Investment Partners \| Subco Units [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Contingent payments	4.4		4.4