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Acquisitions and Other Strategic Initiatives - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Feb. 13, 2020
Regulatory Data Corporation    
Business Acquisition [Line Items]    
Business acquisition interests acquired   100.00%
Acquired cash included in current assets   $ 6
Accounts receivable gross included in current assets   $ 14
RBA International    
Business Acquisition [Line Items]    
Business acquisition interests acquired 100.00%