Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Cash flows from operating activities:
Net income	$ 584,862	$ 496,932
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	121,096	115,367
Amortization of intangible assets and capitalized contract costs	71,558	70,963
Stock-based compensation	57,602	69,398
Gain on sale of operating assets	(17,963)	0
Deferred income taxes	(23,099)	7,632
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	(39,892)	(37,940)
Inventories, net	(124,949)	(13,402)
Uniforms and other rental items in service	(2,914)	(32,744)
Prepaid expenses and other current assets and capitalized contract costs	(57,295)	(68,409)
Accounts payable	42,228	28,055
Accrued compensation and related liabilities	23,809	(29,326)
Accrued liabilities and other	21,570	(17,883)
Income taxes, current	(83,649)	(17,292)
Net cash provided by operating activities	572,964	571,351
Cash flows from investing activities:
Capital expenditures	(57,659)	(126,167)
Purchases of investments	(7,205)	(10,121)
Proceeds from sale of operating assets, net of cash disposed	23,426	13,300
Acquisitions of businesses, net of cash acquired	(6,932)	(6,582)
Other, net	(2,872)	(2,103)
Net cash used in investing activities	(51,242)	(131,673)
Cash flows from financing activities:
Payments of commercial paper, net	0	(112,500)
Proceeds from exercise of stock-based compensation awards	107,530	63,201
Repurchase of common stock	(71,382)	(258,741)
Other, net	(1,687)	(1,952)
Net cash provided by (used in) financing activities	34,461	(309,992)
Effect of exchange rate changes on cash and cash equivalents	1,590	204
Net increase in cash and cash equivalents	557,773	129,890
Cash and cash equivalents at beginning of period	145,402	96,645
Cash and cash equivalents at end of period	$ 703,175	$ 226,535