Short-term and Long-term Debt - Additional Information (Detail) - USD ($)		12 Months Ended
	Feb. 15, 2017	Dec. 30, 2017	Dec. 31, 2016
Schedule Of Debt Instruments [Line Items]
Long-term debt and notes payable maturity, 2018		$ 433,200,000
Long-term debt and notes payable maturity, 2019		200,000,000
Long-term debt and notes payable maturity, 2020		0
Long-term debt and notes payable maturity, 2021		250,000,000
Long-term debt and notes payable maturity, 2022		$ 0
Weighted-average interest rate		2.34%	2.85%
Proceeds from sale of unsecured long-term notes		$ 297,800,000
Notes Payable [Member]
Schedule Of Debt Instruments [Line Items]
Average debt instrument amount outstanding		$ 126,800,000	$ 49,300,000
Weighted-average interest rate		2.45%	7.09%
Commercial Paper [Member]
Schedule Of Debt Instruments [Line Items]
Average debt instrument amount outstanding		$ 103,300,000	$ 26,600,000
Weighted-average interest rate		1.14%	0.73%
4.25% Unsecured Notes Due 2018 [Member]
Schedule Of Debt Instruments [Line Items]
Unsecured notes		$ 250,000,000	$ 250,000,000
Unsecured notes, interest rate		4.25%	4.25%
Unsecured notes, maturity period		Jan. 16, 2018
3.25% Unsecured Notes Due 2027 [Member]
Schedule Of Debt Instruments [Line Items]
Unsecured notes		$ 300,000,000
Unsecured notes, interest rate	3.25%	3.25%	3.25%
Unsecured notes, maturity period	Mar. 01, 2027
Proceeds from sale of unsecured long-term notes	$ 300,000,000	$ 297,800,000
Transaction costs		$ 1,900,000
Five-year Multi-Currency Revolving Credit Facility [Member]
Schedule Of Debt Instruments [Line Items]
Debt maturity term		5 years
Revolving credit facility, amount available		$ 700,000,000
Revolving credit facility, termination date		Dec. 15, 2020
Revolving credit facility, outstanding amount		$ 0
Actual debt-to-capital ratio		0.26
Actual debt-to-income ratio		1.16
Debt instrument, restrictive covenants		(i) a ratio not greater than 0.60 to 1.00 of consolidated net debt (consolidated debt net of certain cash adjustments) to the sum of such consolidated net debt plus total equity and less accumulated other comprehensive income or loss (the "Debt Ratio"); or (ii) a ratio not greater than 3.50 to 1.00 of such consolidated net debt to earnings before interest, taxes, depreciation, amortization and certain other adjustments for the preceding four fiscal quarters then ended (the "Debt to EBITDA Ratio").
Five-year Multi-Currency Revolving Credit Facility [Member] | Maximum [Member]
Schedule Of Debt Instruments [Line Items]
Maximum limit of required debt-to-capital ratio		0.60
Maximum limit of required debt-to-income ratio		3.50
Five-year Multi-Currency Revolving Credit Facility [Member] | Maximum [Member] | Material Acquisition [Member]
Schedule Of Debt Instruments [Line Items]
Maximum limit of required debt-to-capital ratio		0.65
Maximum limit of required debt-to-income ratio		3.75