Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Cash flows from operating activities:
Net income	$ 341,946	$ 254,790
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	28,270	25,588
Amortization of intangibles	41,236	48,710
Amortization of debt issuance costs	1,177	1,177
Deferred income tax provision (benefit)	18,030	(9,261)
Gain on disposition of property, plant and equipment	(1,465)	(2,246)
Stock-based compensation expense	12,986	9,058
Changes in assets and liabilities (excluding acquisitions):
Accounts receivable	(173,388)	(223,186)
Inventories	(146,697)	(55,799)
Prepaid income taxes, expenses and other	(14,141)	(4,612)
Accounts payable	29,595	85,651
Accrued liabilities	49,383	46,604
Long-term liabilities and other	10,253	6,360
Net cash provided by operating activities	197,185	182,834
Cash flows from investing activities:
Purchases of property, plant and equipment	(100,021)	(79,456)
Proceeds from dispositions of property, plant and equipment	3,656	4,630
Acquisitions		(5,039)
Equity investment in joint venture	(46,902)
Other	1,271	(1,581)
Net cash used in investing activities	(141,996)	(81,446)
Cash flows from financing activities:
Principal payments on revolving credit facility	(65,000)	(65,000)
Regular cash dividends paid	(58,492)	(52,057)
Principal payments on capital lease obligations	(279)	(250)
Payments related to vesting of stock-based awards	(7,657)	(4,572)
Net cash used in financing activities	(131,428)	(121,879)
Net decrease in cash and cash equivalents	(76,239)	(20,491)
Cash and cash equivalents, beginning of period	223,258	209,902
Cash and cash equivalents, end of period	147,019	189,411
Supplemental cash flow information:
Income taxes paid	186,166	130,802
Interest paid	3,087	6,652
Non-cash transactions:
Capital expenditures in accounts payable	$ 2,082	$ 2,605