Debt and Receivables Securitization - Additional Information (Detail) € in Thousands						3 Months Ended		9 Months Ended
	Feb. 29, 2020 USD ($)	Jan. 13, 2020 USD ($)	Aug. 30, 2019 USD ($)	Aug. 23, 2019 EUR (€)	Feb. 16, 2018	Feb. 29, 2020 USD ($)	Feb. 28, 2019 USD ($)	Feb. 29, 2020 USD ($)	Feb. 28, 2019 USD ($)	Jan. 12, 2020 USD ($)	Aug. 23, 2019 USD ($) subsidarie	Aug. 23, 2019 EUR (€) subsidarie
Debt And Receivables Securitization [Line Items]
Remaining borrowing capacity	$ 499,550,000					$ 499,550,000		$ 499,550,000
Unamortized portion of debt issuance costs	128,000					128,000		128,000
Debt Issuance Costs, Net											$ 134,000
Number of European subsidiaries | subsidarie											2	2
Loss on extinguishment of debt			$ 4,034,000			0	$ 0	4,034,000	$ 0
Maximum undivided ownership interests WRC may sell without recourse on revolving basis	10,000,000
Securities Sold under Agreements to Repurchase
Debt And Receivables Securitization [Line Items]
Maximum borrowing capacity		$ 10,000,000								$ 50,000,000
Borrowings outstanding	0					0		$ 0
Number of days past due trade accounts receivables are ineligible for securitization								90 days
Senior Notes Series A 1.56%
Debt And Receivables Securitization [Line Items]
Principal amount | €												€ 36,700
Debt, interest rate											1.56%	1.56%
Debt instrument, maturity date				Aug. 23, 2031
Debt to be repaid | €				€ 30,000
Debt instrument payments date				Aug. 23, 2029
Remaining debt to repaid | €				€ 6,700
Senior Notes Series B
Debt And Receivables Securitization [Line Items]
Principal amount | €												€ 55,000
Debt, interest rate											1.90%	1.90%
Debt instrument, maturity date				Aug. 23, 2034
Debt to be repaid | €				€ 23,300
Debt instrument payments date				Aug. 23, 2031
Remaining debt to repaid | €				€ 31,700
Senior Notes Six Point Five Zero Percent Due April Fifteen Twenty Twenty
Debt And Receivables Securitization [Line Items]
Debt, interest rate			6.50%
Debt instrument, maturity date			Apr. 15, 2020
Principal amount of debt redeemed			$ 150,000,000
Maximum
Debt And Receivables Securitization [Line Items]
Debt maturity period								1 year
Unsecured Revolving Credit Facility
Debt And Receivables Securitization [Line Items]
Maximum borrowing capacity	500,000,000					500,000,000		$ 500,000,000
Maturity date					2023-02
Borrowings outstanding	0					0		0
Stand-by Letters of Credit
Debt And Receivables Securitization [Line Items]
Letter of credit amount outstanding	15,300,000					15,300,000		15,300,000
Drawn amount of letter of credit outstanding								0
Letter of Credit
Debt And Receivables Securitization [Line Items]
Letter of credit amount outstanding	$ 450,000					$ 450,000		$ 450,000
AR Facility | Securities Sold under Agreements to Repurchase
Debt And Receivables Securitization [Line Items]
Maturity date		2021-01