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Compass Concierge Receivables and Allowance for Credit Losses - Summary of ACL for Concierge Receivables (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2022
USD ($)
Receivables [Abstract]  
Beginning of period $ 17.3
Allowances 0.8
Net write-offs and other (2.0)
End of period $ 16.1