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INTRODUCTION AND BASIS OF PRESENTATION - Narrative (Details) - Customer Concentration Risk - Blackrock Inc
3 Months Ended
Mar. 31, 2024
Mar. 31, 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 10.00% 10.20%
Revenue from Contract with Customer, Segment Benchmark | Index    
Introduction And Basis Of Presentation [Line Items]    
Percentage of operating revenues accounted for by major customer 17.90% 17.40%