DEBT - Schedule of Long-Term Debt (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Line of credit | $1.2 billion senior credit facility, due in 2022
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility	$ 1,200,000,000
Term Loan | $1.3 billion term loan, due in 2022
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility	1,300,000,000
Senior Notes | $600 million Senior Notes, due in 2024
Debt Instrument [Line Items]
Maximum borrowing capacity of line of credit facility	$ 600,000,000
Promissory notes and deferred consideration | Notes weighted average maturity, 2.12 and 2.49 years
Debt Instrument [Line Items]
Long-term debt, maturity	2 years 1 month 13 days	2 years 5 months 26 days
Foreign bank debt | Debt, weighted average maturity, 1.1 and 1.6 years
Debt Instrument [Line Items]
Long-term debt, maturity	1 year 1 month 6 days	1 year 7 months 6 days