Debt and Receivables Securitization - Summary of Long-term Debt and Short-term Borrowings Outstanding (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Debt Instrument [Line Items]
Debt	$ 703,060
Total debt	703,060	$ 753,100
Unamortized discount and debt issuance costs	(3,395)	(3,801)
Total debt, net	699,665	749,299
Less: current maturities and short-term borrowings	149	150,943
Total long-term debt	699,516	598,356
1.56% Senior Notes due August 23, 2029
Debt Instrument [Line Items]
Senior notes	33,311
1.56% Senior Notes due August 23, 2031
Debt Instrument [Line Items]
Senior notes	7,439
1.90% Senior Notes due August 23, 2031
Debt Instrument [Line Items]
Senior notes	25,872
1.90% Senior Notes due August 23, 2034
Debt Instrument [Line Items]
Senior notes	35,199
4.30% Senior Notes due August 1, 2032
Debt Instrument [Line Items]
Senior notes	200,000	200,000
4.55% Senior Notes due April 15, 2026
Debt Instrument [Line Items]
Senior notes	250,000	250,000
4.60% Senior Notes due August 10, 2024
Debt Instrument [Line Items]
Senior notes	150,000	150,000
Other Debt
Debt Instrument [Line Items]
Debt	$ 1,239	3,100
6.50% Senior Notes due April 15, 2020
Debt Instrument [Line Items]
Senior notes		$ 150,000

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt long-term and short-term combined amount net of unamortized discount and debt issue costs.

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