XML 57 R46.htm IDEA: XBRL DOCUMENT v3.21.2
Contracts with Customers - Summary of Unbilled Receivables, Contract Assets and Contract Liabilities from Contracts with Customers (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Contract With Customer Asset And Liability [Abstract]    
Unbilled receivables $ 810.6 $ 603.1
Deferred contract costs 76.3 102.0
Deferred revenue $ 588.2 $ 541.3