Revenue Recognition - Cumulative Effect of Adopting New Revenue Guidance on Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	Jun. 01, 2018	May 31, 2018
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Receivables	$ 564,612		$ 572,689
Total inventories	494,116		454,027
Prepaid expenses and other current assets	60,846		60,134
Deferred income taxes, net	79,116		60,188
Retained earnings			637,757
Noncontrolling interests	117,855		$ 117,606
Accounting Standards Update 2014-09
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Receivables		$ 577,395
Total inventories		450,575
Prepaid expenses and other current assets		61,078
Deferred income taxes, net		60,642
Retained earnings		638,931
Noncontrolling interests		118,176
Accounting Standards Update 2014-09 \| Cumulative Effect of Topic 606 Adoption
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Receivables	(4,690)	4,706
Total inventories	4,056	(3,452)
Prepaid expenses and other current assets	(1,823)	944
Deferred income taxes, net	(450)	454
Retained earnings		1,174
Noncontrolling interests	$ (594)	$ 570

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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