DEBT - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 2,720.0	$ 2,747.2
Less: current portion of total debt	121.9	119.5
Less: unamortized debt issuance costs	11.9	12.4
Long-term portion of total debt	2,586.2	2,615.3
Obligations under capital leases
Debt Instrument [Line Items]
Total debt	19.3	9.4
$1.2 billion senior credit facility weighted average rate 2.74% in 2018 and 2.55% in 2017, due in 2022
Debt Instrument [Line Items]
Total debt	446.9	471.7
$950 million term loan weighted average rate 3.20% in 2018 and 2.83% in 2017, due in 2022
Debt Instrument [Line Items]
Total debt	938.1	950.0
$125 million private placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Total debt	125.0	125.0
$225 million private placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Total debt	225.0	225.0
$150 million private placement notes 2.89%, due in 2021
Debt Instrument [Line Items]
Total debt	150.0	150.0
$125 million private placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Total debt	125.0	125.0
$200 million private placement notes 2.72%, due in 2022
Debt Instrument [Line Items]
Total debt	200.0	200.0
$100 million private placement notes 2.79%, due in 2023
Debt Instrument [Line Items]
Total debt	100.0	100.0
$150 million private placement notes 3.18%, due in 2023
Debt Instrument [Line Items]
Total debt	150.0	150.0
Promissory notes and deferred consideration weighted average rate 1.59% in 2018 and 1.49% in 2017 and weighted average maturity 2.9 years in 2018 and 2017
Debt Instrument [Line Items]
Total debt	153.0	155.9
Foreign bank debt weighted average rate 5.38% in 2018 and 6.11% in 2017 and weighted average maturity 1.5 years in 2018 and 1.7 years in 2017
Debt Instrument [Line Items]
Total debt	$ 87.7	$ 85.2