Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 5,676	$ 4,994	$ 6,205
Other comprehensive income (loss):
Foreign currency translation adjustments	[1]	261	(551)	(213)
Comprehensive income		5,937	4,443	5,992
Less: Comprehensive income (loss) attributable to noncontrolling interests		174	(184)	304
Comprehensive income attributable to BlackRock, Inc.		$ 5,763	$ 4,627	$ 5,688

[1] Amount for 2023 includes a loss from a net investment hedge of $20 million (net of tax benefit of $6 million). Amount for 2022 includes a gain from a net investment hedge of $37 million (net of tax expense of $12 million). Amount for 2021 includes a gain from a net investment hedge of $46 million (net of tax expense of $14 million).