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Leases - Operating Lease Cost and Additional Lease Information (Details) $ in Thousands	3 Months Ended
	Aug. 31, 2019 USD ($)
Lease cost
Operating lease costs including short-term lease expense and variable lease costs, which were immaterial in the quarter	$ 17,200
Operating cash flow impacts
Cash paid for amounts included in the measurement of operating lease liabilities	12,342
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$ 6,828
Weighted-average remaining lease term - operating leases	5 years 4 months 9 days
Weighted-average discount rate - operating leases	2.68%

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Lessee, Operating Lease, Additional Information [Abstract]

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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