Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Shares of Common Stock	Common Stock and Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance (in shares) at Jul. 31, 2020		261,740
Beginning Balance at Jul. 31, 2020	$ 5,106,000		$ 6,182,000	$ (11,929,000)	$ (32,000)	$ 10,885,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	227,000				9,000	218,000
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		1,367
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	(60,000)		(60,000)
Stock repurchases (in shares)		(470)
Stock repurchases	(175,000)			(175,000)
Dividends and dividend rights declared	(320,000)					(320,000)
Share-based compensation expense	292,000		292,000
Issuance of stock in business combination (in shares)		11,324
Issuance of common stock in business combinations	3,798,000		3,798,000
Ending Balance (in shares) at Jan. 31, 2021		273,961
Ending Balance at Jan. 31, 2021	8,868,000		10,212,000	(12,104,000)	(23,000)	10,783,000
Beginning Balance (in shares) at Oct. 31, 2020		262,707
Beginning Balance at Oct. 31, 2020	5,245,000		6,283,000	(11,929,000)	(35,000)	10,926,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	32,000				12,000	20,000
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		400
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	(49,000)		(49,000)
Stock repurchases (in shares)		(470)
Stock repurchases	(175,000)			(175,000)
Dividends and dividend rights declared	(163,000)					(163,000)
Share-based compensation expense	180,000		180,000
Issuance of stock in business combination (in shares)		11,324
Issuance of common stock in business combinations	3,798,000		3,798,000
Ending Balance (in shares) at Jan. 31, 2021		273,961
Ending Balance at Jan. 31, 2021	8,868,000		10,212,000	(12,104,000)	(23,000)	10,783,000
Beginning Balance (in shares) at Jul. 31, 2021		273,235
Beginning Balance at Jul. 31, 2021	9,869,000		10,548,000	$ (12,951,000)	(24,000)	12,296,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	318,000				(10,000)	328,000
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		1,091
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	(279,000)		(279,000)
Stock repurchases (in shares)		(1,416)		(1,400)
Stock repurchases	(857,000)			$ (857,000)
Dividends and dividend rights declared	(389,000)					(389,000)
Share-based compensation expense	617,000		617,000
Issuance of stock in business combination (in shares)		10,090
Issuance of common stock in business combinations	6,316,000		6,316,000
Ending Balance (in shares) at Jan. 31, 2022		283,000
Ending Balance at Jan. 31, 2022	15,595,000		17,202,000	(13,808,000)	(34,000)	12,235,000
Beginning Balance (in shares) at Oct. 31, 2021		273,222
Beginning Balance at Oct. 31, 2021	9,733,000		10,718,000	(13,289,000)	(29,000)	12,333,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	95,000				(5,000)	100,000
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		498
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	(168,000)		(168,000)
Stock repurchases (in shares)		(810)
Stock repurchases	(519,000)			(519,000)
Dividends and dividend rights declared	(198,000)					(198,000)
Share-based compensation expense	336,000		336,000
Issuance of stock in business combination (in shares)		10,090
Issuance of common stock in business combinations	6,316,000		6,316,000
Ending Balance (in shares) at Jan. 31, 2022		283,000
Ending Balance at Jan. 31, 2022	$ 15,595,000		$ 17,202,000	$ (13,808,000)	$ (34,000)	$ 12,235,000