v3.24.3

INTRODUCTION AND BASIS OF PRESENTATION - Narrative (Details) - Blackrock Inc - Customer Concentration Risk	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer, Product and Service Benchmark
Introduction And Basis Of Presentation [Line Items]
Percentage of operating revenues accounted for by major customer	10.10%	10.10%
Revenue from Contract with Customer, Segment Benchmark | Index
Introduction And Basis Of Presentation [Line Items]
Percentage of operating revenues accounted for by major customer	17.80%	17.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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