Consolidated Sponsored Investment Products - Schedule of Net Gain (Loss) Related to Consolidated VIEs (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	$ (102)	$ 82
Net income (loss) attributable to NCI on consolidated VIEs	(73)	74
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	(133)	83
Net income (loss) attributable to NCI on consolidated VIEs	$ (75)	$ 55

Amount of Net Income (Loss) attributable to noncontrolling interest.

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