DEBT - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total debt	$ 2,747.2	$ 2,959.3
Less: current portion of total debt	119.5	72.8
Less: unamortized debt issuance costs	12.4	9.2
Long-term portion of total debt	2,615.3	2,877.3
Obligations under capital leases
Debt Instrument [Line Items]
Total debt	9.4	11.1
$1.2 billion senior credit facility weighted average rate 2.55%, due in 2022
Debt Instrument [Line Items]
Total debt	471.7	407.1
$1.0 billion term loan weighted average rate 2.83%, due in 2022
Debt Instrument [Line Items]
Total debt	950.0	1,000.0
$175 million private placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Total debt	0.0	175.0
$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 of 1.49% and weighted average maturity of 2.9 years
Debt Instrument [Line Items]
Total debt	155.9	191.7
Foreign bank debt weighted average rate 6.11% and weighted average maturity of 1.7 years
Debt Instrument [Line Items]
Total debt	$ 85.2	$ 99.4