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LONG-TERM DEBT - Bank Credit Agreements (Detail) $ in Millions		1 Months Ended		12 Months Ended
	Feb. 10, 2021 USD ($)	Feb. 29, 2020 USD ($)	Feb. 29, 2020 CAD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 USD ($)	Feb. 26, 2020 USD ($)	Feb. 26, 2020 EUR (€)	Dec. 31, 2019 CAD ($)	Nov. 12, 2019 USD ($)	May 30, 2018 USD ($)	May 30, 2018 CAD ($)
Debt Instrument [Line Items]
Current portion of long-term debt				$ 26,116,000
Debt, long-term and short-term, combined amount				3,271,969,000	$ 2,258,873,000
Long-term debt, maturity, year four				400,620,000
Letters of credit facing fee				$ 500
Letters of credit facing fee percentage				0.25%
Loss on early extinguishment of debt				$ 1,481,000	1,676,000		$ 2,493,000
Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				$ 930,407,000	795,830,000
4⅛% Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount								$ 200,000,000.0
2¼% Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount | €									€ 500,000,000.0
Term Loans Maintained as Eurodollar Rate, Euro Rate or CDOR Rate Loans
Debt Instrument [Line Items]
Line of credit facility, margin				1.50%
Revolving Loans Maintained as Eurodollar Rate, Euro Rate or CDOR Rate Loans
Debt Instrument [Line Items]
Line of credit facility, margin				1.25%
U S Term Loans
Debt Instrument [Line Items]
Repayments of debt		$ 760,000,000.0			40,000,000.0
Debt, long-term and short-term, combined amount												$ 800,000,000.0
Line of credit facility, interest rate at period end				1.75%
Loss on early extinguishment of debt				$ 1,500,000
U S Term Loans | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				900,000,000	760,000,000
Other foreign bank revolving and term loans
Debt Instrument [Line Items]
Current portion of long-term debt				26,100,000
Other foreign bank revolving and term loans | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				30,407,000	31,127,000
Finance leases
Debt Instrument [Line Items]
Current portion of long-term debt				1,900,000
Revolving Loan - Letters of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				125,000,000.0
Canadian term loans
Debt Instrument [Line Items]
Repayments of debt			$ 6.1			$ 24.0
Debt, long-term and short-term, combined amount												45,500,000
Canadian term loans | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				0	4,703,000					$ 6.1
Multicurrency Incremental Loan Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				1,250,000,000								1,190,000,000
Canadian Revolving Loans
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity													$ 15.0
Term Loan | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount					$ 764,700,000
Term Loan | Bank Debt | Subsequent Event
Debt Instrument [Line Items]
Current portion of long-term debt	$ 90,000,000.0
Repayments of debt	500,000,000.0
Debt, long-term and short-term, combined amount	500,000,000.0
Term Loan Facility
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount												$ 900,000,000.0
Long-term debt, maturity, year four				$ 400,000,000.0
Debt, weighted average interest rate				2.10%	3.60%		3.60%			3.60%
Term Loan Facility | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				$ 900,000,000.0
Term Loan Facility | Bank Debt | Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	500,000,000.0
2018 Amendment to the Credit Agreement
Debt Instrument [Line Items]
Loss on early extinguishment of debt							$ 1,100,000
Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage				0.25%
Debt, weighted average interest rate				1.90%	3.50%		3.50%			3.50%
Revolving Loan | Bank Debt
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount				$ 0	$ 0
Senior Notes | 4⅛% Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount								$ 200,000,000.0			$ 400,000,000.0
Stated interest rate				4.125%
Debt instrument offering price percentage at principal amount											100.00%
Debt, long-term and short-term, combined amount				$ 600,000,000	400,000,000
Senior Notes | 2¼% Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount | €									€ 500,000,000.0
Stated interest rate				2.25%
Debt instrument offering price percentage at principal amount								100.00%	100.00%
Debt, long-term and short-term, combined amount				$ 611,775,000	$ 0
Senior Notes | 1.4% Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000.0
Stated interest rate	1.40%
Debt instrument offering price percentage at principal amount	99.945%
Maximum | Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage				0.30%
Minimum | Multicurrency Incremental Loan Facility
Debt Instrument [Line Items]
Additional borrowing capacity				$ 50,000,000.0
Minimum | Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage				0.20%

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