Revenue Recognition - Schedule of Impact of Adopting Topic 606 on Company's Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Jun. 01, 2018	May 31, 2018
Assets
Receivables	$ 564,612			$ 572,689
Total inventories	494,116			454,027
Prepaid expenses and other current assets	60,846			60,134
Liabilities and equity
Deferred income taxes, net	79,116			60,188
Shareholders' equity - controlling interest	919,519			918,769
Noncontrolling interests	117,855			$ 117,606
Consolidated Statement of Earnings
Net sales	988,107	$ 848,237
Cost of goods sold	845,110	715,459
Income tax expense	14,498	12,998
Net earnings	56,958	48,074
Net earnings attributable to noncontrolling interests	2,016	2,540
Net earnings attributable to controlling interest	54,942	$ 45,534
Accounting Standards Update 2014-09
Assets
Receivables			$ 577,395
Total inventories			450,575
Prepaid expenses and other current assets			61,078
Liabilities and equity
Deferred income taxes, net			60,642
Noncontrolling interests			118,176
Accounting Standards Update 2014-09 | Topic 606 Adjustments
Assets
Receivables	(4,690)		4,706
Total inventories	4,056		(3,452)
Prepaid expenses and other current assets	(1,823)		944
Liabilities and equity
Deferred income taxes, net	(450)		454
Shareholders' equity - controlling interest	(1,413)
Noncontrolling interests	(594)		$ 570
Consolidated Statement of Earnings
Net sales	(863)
Cost of goods sold	604
Income tax expense	(4)
Net earnings	(263)
Net earnings attributable to noncontrolling interests	(24)
Net earnings attributable to controlling interest	(239)
Accounting Standards Update 2014-09 | Balances Without Adoption of Topic 606
Assets
Receivables	559,922
Total inventories	498,172
Prepaid expenses and other current assets	59,023
Liabilities and equity
Deferred income taxes, net	78,666
Shareholders' equity - controlling interest	918,106
Noncontrolling interests	117,261
Consolidated Statement of Earnings
Net sales	987,244
Cost of goods sold	845,714
Income tax expense	14,494
Net earnings	56,695
Net earnings attributable to noncontrolling interests	1,992
Net earnings attributable to controlling interest	$ 54,703