Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Cash flows from operating activities:
Net income	$ 331,179	$ 300,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	60,955	60,574
Amortization of intangible assets and capitalized contract costs	36,994	35,605
Stock-based compensation	36,496	29,055
Gain on sale of operating assets	(12,178)	0
Deferred income taxes	22,887	(8,716)
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	(27,742)	7,118
Inventories, net	14,986	(77,944)
Uniforms and other rental items in service	(39,274)	16,552
Prepaid expenses and other current assets and capitalized contract costs	(36,724)	(42,277)
Accounts payable	(26,272)	20,358
Accrued compensation and related liabilities	(85,834)	(10,067)
Accrued liabilities and other	(24,342)	(14,297)
Income taxes, current	11,010	(3,674)
Net cash provided by operating activities	262,141	312,292
Cash flows from investing activities:
Capital expenditures	(48,748)	(30,876)
Purchases of investments	(8,738)	(4,940)
Proceeds from sale of operating assets	15,070	0
Acquisitions of businesses, net of cash acquired	(35,725)	(1,984)
Other, net	(6,180)	(2,142)
Net cash used in investing activities	(84,321)	(39,942)
Cash flows from financing activities:
Issuance of commercial paper, net	326,000	0
Repayment of debt	(250,000)	0
Proceeds from exercise of stock-based compensation awards	72,896	72,123
Dividends paid	(79,135)	0
Repurchase of common stock	(659,235)	(69,011)
Other, net	(610)	(869)
Net cash (used in) provided by financing activities	(590,084)	2,243
Effect of exchange rate changes on cash and cash equivalents	(1,627)	1,547
Net (decrease) increase in cash and cash equivalents	(413,891)	276,140
Cash and cash equivalents at beginning of period	493,640	145,402
Cash and cash equivalents at end of period	$ 79,749	$ 421,542