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LONG-TERM DEBT - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Total debt $ 2,634.7 $ 2,676.6
Less: current portion of total debt 101.4 103.1
Less: unamortized debt issuance costs 14.5 14.2
Long-term portion of total debt 2,518.8 2,559.3
Line of credit | $1.2 billion senior credit facility, due in 2022    
Debt Instrument [Line Items]    
Total debt 774.0 758.7
Term Loan | $1.3 billion Term Loan, due in 2022    
Debt Instrument [Line Items]    
Total debt 1,128.3 1,172.2
Senior Notes | $600 million Senior Notes, due 2024    
Debt Instrument [Line Items]    
Total debt 600.0 600.0
Promissory notes and deferred consideration | Notes weighted average maturity 2.3 years and 2.5 years    
Debt Instrument [Line Items]    
Total debt 66.2 73.1
Foreign bank debt | Debt weighted average maturity 1.4 years and 1.6 years    
Debt Instrument [Line Items]    
Total debt 37.3 42.2
Obligations under finance leases    
Debt Instrument [Line Items]    
Total debt $ 28.9 $ 30.4