Income Taxes - Reconciliation from United States Statutory Federal Income Tax Rate to Effective Income Tax Rate (Detail)	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Effective Income Tax Rate Reconciliation [Line Items]
Federal income tax rate	21.00%	21.00%	21.00%
State taxes, net of federal benefit	1.30%	0.80%	1.00%
Foreign earnings	0.20%	5.90%	(1.10%)
Foreign-derived intangible income benefit	(0.037)	(0.081)	0
Excess tax benefits from share-based compensation	(4.50%)	(7.20%)	(3.60%)
Income tax audits and contingency reserves	1.50%	(1.40%)	1.30%
U.S. research and development tax credit	(0.90%)	(1.80%)	(1.00%)
Other, net	(0.90%)	2.90%	(1.50%)
EFFECTIVE INCOME TAX RATE	14.00%	12.10%	16.10%
Alterra Corp. V. Commissioner, Inclusion Of Stock-Based Compensation
Effective Income Tax Rate Reconciliation [Line Items]
Income tax audits and contingency reserves	1.20%
Withholding Taxes
Effective Income Tax Rate Reconciliation [Line Items]
Foreign earnings		6.50%
Held For Sale Accounting Items
Effective Income Tax Rate Reconciliation [Line Items]
Foreign earnings		2.90%
Statutory Rate Differences And Other Items
Effective Income Tax Rate Reconciliation [Line Items]
Foreign earnings		(3.50%)
Other, net	0.30%
Modification Of Treatment Of Certain Research And Development Expenditures
Effective Income Tax Rate Reconciliation [Line Items]
Income tax audits and contingency reserves		(2.90%)
Resolution Of IRS Audit And Other Matters
Effective Income Tax Rate Reconciliation [Line Items]
Income tax audits and contingency reserves		1.50%
Intra-Entity Transfers Of Inventory
Effective Income Tax Rate Reconciliation [Line Items]
Other, net		2.30%
Other Items
Effective Income Tax Rate Reconciliation [Line Items]
Other, net		0.60%