Consolidated Sponsored Investment Products - Schedule of Net Gain (Loss) Related to Consolidated VIEs (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	$ 841	$ 972	$ 342
Net income (loss) attributable to NCI on consolidated VIEs	304	354	50
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Nonoperating net gain (loss) on consolidated VIEs	296	477	210
Net income (loss) attributable to NCI on consolidated VIEs	$ 289	$ 348	$ 42

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

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