Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Cash flows from operating activities:
Net income	$ 496,932	$ 455,528
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	115,367	107,112
Amortization of intangible assets and capitalized contract costs	70,963	67,559
Stock-based compensation	69,398	74,784
Gain on sale of a cost method investment	0	(69,373)
Deferred income taxes	7,632	19,227
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	(37,940)	(85,748)
Inventories, net	(13,402)	(53,227)
Uniforms and other rental items in service	(32,744)	(57,684)
Prepaid expenses and other current assets and capitalized contract costs	(68,409)	(58,161)
Accounts payable	28,055	(1,955)
Accrued compensation and related liabilities	(29,326)	(20,969)
Accrued liabilities and other	(17,883)	(15,322)
Income taxes, current	(17,292)	(17,204)
Net cash provided by operating activities	571,351	344,567
Cash flows from investing activities:
Capital expenditures	(126,167)	(137,614)
Purchases of investments	(10,121)	(14,071)
Proceeds from sale of a cost method investment	0	73,342
Proceeds from sale of assets	13,300	0
Acquisitions of businesses, net of cash acquired	(6,582)	(6,580)
Other, net	(2,103)	(1,717)
Net cash used in investing activities	(131,673)	(86,640)
Cash flows from financing activities:
(Payments) issuance of commercial paper, net	(112,500)	173,500
Proceeds from exercise of stock-based compensation awards	63,201	32,612
Repurchase of common stock	(258,741)	(508,129)
Other, net	(1,952)	(5,362)
Net cash used in financing activities	(309,992)	(307,379)
Effect of exchange rate changes on cash and cash equivalents	204	(793)
Net increase (decrease) in cash and cash equivalents	129,890	(50,245)
Cash and cash equivalents at beginning of period	96,645	138,724
Cash and cash equivalents at end of period	$ 226,535	$ 88,479