Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Cash flows from operating activities:
Net income	$ 300,005	$ 250,812
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	60,574	56,726
Amortization of intangible assets and capitalized contract costs	35,605	35,268
Stock-based compensation	29,055	40,395
Deferred income taxes	(8,716)	7,910
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	7,118	(6,636)
Inventories, net	(77,944)	(1,726)
Uniforms and other rental items in service	16,552	(11,305)
Prepaid expenses and other current assets and capitalized contract costs	(42,277)	(41,928)
Accounts payable	20,358	13,357
Accrued compensation and related liabilities	(10,067)	(58,718)
Accrued liabilities and other	(14,297)	(24,082)
Income taxes, current	(3,674)	16,828
Net cash provided by operating activities	312,292	276,901
Cash flows from investing activities:
Capital expenditures	(30,876)	(64,743)
Purchases of investments	(4,940)	(9,391)
Acquisitions of businesses, net of cash acquired	(1,984)	(3,896)
Other, net	(2,142)	(109)
Net cash used in investing activities	(39,942)	(78,139)
Cash flows from financing activities:
Issuance of commercial paper, net	0	26,500
Proceeds from exercise of stock-based compensation awards	72,123	37,915
Repurchase of common stock	(69,011)	(256,830)
Other, net	(869)	(1,192)
Net cash provided by (used in) financing activities	2,243	(193,607)
Effect of exchange rate changes on cash and cash equivalents	1,547	331
Net increase in cash and cash equivalents	276,140	5,486
Cash and cash equivalents at beginning of period	145,402	96,645
Cash and cash equivalents at end of period	$ 421,542	$ 102,131