DEBT - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 2,959,316	$ 3,214,048
Less: current portion of total debt	72,822	161,409
Less: unamortized debt issuance costs	9,179	12,287
Long-term portion of total debt	2,877,315	3,040,352
Obligations under capital leases
Debt Instrument [Line Items]
Total debt	11,121	15,024
$1.2 billion senior credit facility weighted average rate 2.14%, due in 2019
Debt Instrument [Line Items]
Total debt	407,119	353,763
$1.0 billion term loan weighted average rate 2.07%, due in 2020
Debt Instrument [Line Items]
Total debt	1,000,000	1,250,000
$175 million private placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Total debt	175,000	175,000
$125 million private placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Total debt	125,000	125,000
$225 million private placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Total debt	225,000	225,000
$150 million private placement notes 2.89%, due in 2021
Debt Instrument [Line Items]
Total debt	150,000	150,000
$125 million private placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Total debt	125,000	125,000
$200 million private placement notes 2.72%, due in 2022
Debt Instrument [Line Items]
Total debt	200,000	200,000
$100 million private placement notes 2.79%, due in 2023
Debt Instrument [Line Items]
Total debt	100,000	100,000
$150 million private placement notes 3.18%, due in 2023
Debt Instrument [Line Items]
Total debt	150,000	150,000
Promissory notes and deferred consideration weighted average rate of 2.43% and weighted average maturity of 3.2 years
Debt Instrument [Line Items]
Total debt	191,648	239,731
Foreign bank debt weighted average rate 6.51% and weighted average maturity of 2.1 years
Debt Instrument [Line Items]
Total debt	$ 99,428	$ 105,530