Long-Term Debt Credit Facility Agreements (Detail) € in Millions, CAD in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Feb. 13, 2017 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 CAD	Dec. 31, 2016 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2015 CAD	Dec. 31, 2015 USD ($)	Jan. 14, 2014 EUR (€)	Jan. 14, 2014 CAD	Jan. 14, 2014 USD ($)
Debt Instrument [Line Items]
Long-term debt, due in the next twelve months								$ 217,127,000
Debt, Long-term and Short-term, Combined Amount								1,571,192,000			$ 1,525,818,000
Repayments of long-term debt		$ 67,412,000	$ 37,304,000	$ 754,834,000
Additional borrowing capacity								1,250,000,000
Letters Of Credit Facing Fee		$ 500
Letters Of Credit Facing Fee Percentage		0.25%
Loss on early extinguishment of debt	$ 1,500,000	$ 0	$ 0	$ 1,474,000
Four and Three Quarters Percent Senior Notes due 2025 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 300,000,000
U.S. term loans [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount								$ 310,300,000			346,800,000
Line of Credit Facility, Interest Rate at Period End						2.50%	2.50%	2.50%
Long-term Debt														$ 365,000,000
Canadian Term Loans [Member]
Debt Instrument [Line Items]
Borrowings available under the revolving loan facilities | CAD							CAD 15.0
Debt, Long-term and Short-term, Combined Amount | CAD							CAD 59.5			CAD 66.5
Line of Credit Facility, Interest Rate at Period End						2.44%	2.44%	2.44%
Long-term Debt | CAD													CAD 70.0
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, due in the next twelve months								$ 5,200,000
Euro term loans [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount | €						€ 187.0			€ 209.0
Line of Credit Facility, Interest Rate at Period End						1.15%	1.15%	1.15%
Long-term Debt | €												€ 220.0
Term Loan Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding											$ 622,200,000
Debt, Long-term and Short-term, Combined Amount								$ 551,200,000
Debt, Weighted Average Interest Rate				1.80%		1.90%	1.90%	1.90%	1.70%	1.70%	1.70%
Weighted average interest rate after interest rate swap		2.00%	1.90%	2.70%
Revolving Loan [Member]
Debt Instrument [Line Items]
Long-term debt, due in the next twelve months								$ 99,500,000
Debt, Weighted Average Interest Rate				1.70%		2.00%	2.00%	2.00%	1.70%	1.70%	1.70%
Letters of Credit Outstanding, Amount								$ 18,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.25%
Letter Of Credit Maximum Borrowing Amount								200,000,000
U S Revolving Loans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								985,600,000
Canadian Revolving Loans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity | CAD							CAD 15.0
Revolving And Term Loans [Member]
Debt Instrument [Line Items]
Borrowings available under the revolving loan facilities								868,100,000
Line of credit facility, margin		1.50%
Revolving And Term Loans [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, margin		0.50%
Maximum [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Additional borrowing capacity								$ 625,000,000
Maximum [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.35%
Minimum [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.20%