Long-Term Debt - Additional Information (Detail) - USD ($)			9 Months Ended
	Mar. 05, 2020	Sep. 24, 2019	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt instrument redemption price percentage	100.00%
Maximum consolidated debt reduction for unrestricted cash and cash equivalents for debt covenant calculation			$ 200,000,000
Outstanding letters of credit			31,700,000
Minimum
Debt Instrument [Line Items]
Reduction of consolidated debt in the debt ratio calculation			$ 50,000,000
Including Acquisition Bridge Debt | Maximum
Debt Instrument [Line Items]
Debt covenant			3.50
Excluding Acquisition Bridge Debt | Maximum
Debt Instrument [Line Items]
Debt covenant			3.75
Revolving Facility
Debt Instrument [Line Items]
Credit facility commitment			$ 700,000,000
Debt instrument maturity period			Dec. 05, 2024
Senior unsecured revolving facility, maturity period			5 years
Revolving facility, borrowings outstanding			$ 0	$ 0
Outstanding letters of credit			$ 2,300,000	$ 2,300,000
US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate	30.00%
2.500% Senior Notes, Due 2030
Debt Instrument [Line Items]
Aggregate principal amount of long term debt	$ 500,000,000
Interest rate on notes	2.50%		2.50%
Maturity year	2030		2030
Floating Rate Senior Notes, Due 2020
Debt Instrument [Line Items]
Maturity year			2020
Debt Instrument Payable Upon Maturity	$ 300,000,000
Trade Receivable Facility
Debt Instrument [Line Items]
Credit facility commitment			$ 400,000,000
Debt instrument maturity period		Sep. 22, 2021
Credit facility outstanding			$ 0
Trade Receivable Facility | London Interbank Offered Rate(LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Trade Receivable Facility | Conduit Lenders
Debt Instrument [Line Items]
Basis spread on variable rate			0.85%