Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Cash flows from operating activities:
Net income	$ 328,000	$ 218,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	96,000	77,000
Amortization of acquired intangible assets	233,000	60,000
Non-cash operating lease cost	40,000	28,000
Share-based compensation expense	616,000	291,000
Deferred income taxes	(12,000)	11,000
Other	(29,000)	(48,000)
Total adjustments	944,000	419,000
Originations of loans held for sale	0	(41,000)
Sale and principal payments of loans held for sale	0	143,000
Changes in operating assets and liabilities:
Accounts receivable	(472,000)	(178,000)
Income taxes receivable	(117,000)	(82,000)
Prepaid expenses and other assets	(133,000)	(63,000)
Accounts payable	84,000	87,000
Accrued compensation and related liabilities	(523,000)	(269,000)
Deferred revenue	83,000	90,000
Operating lease liabilities	(41,000)	(27,000)
Other liabilities	77,000	27,000
Total changes in operating assets and liabilities	(1,042,000)	(415,000)
Net cash provided by operating activities	230,000	324,000
Cash flows from investing activities:
Purchases of corporate and customer fund investments	(318,000)	(535,000)
Sales of corporate and customer fund investments	1,429,000	89,000
Maturities of corporate and customer fund investments	154,000	265,000
Purchases of property and equipment	(107,000)	(71,000)
Acquisitions of businesses, net of cash acquired	(5,682,000)	(3,045,000)
Originations of term loans to small businesses	(317,000)	(70,000)
Principal repayments of term loans from small businesses	175,000	53,000
Other	(16,000)	48,000
Net cash used in investing activities	(4,682,000)	(3,266,000)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	4,700,000	0
Repayments on borrowings under unsecured revolving credit facility	0	(1,000,000)
Proceeds from borrowings under secured revolving credit facility	2,000	0
Repayment of debt	0	(13,000)
Proceeds from issuance of stock under employee stock plans	75,000	108,000
Payments for employee taxes withheld upon vesting of restricted stock units	(355,000)	(168,000)
Cash paid for purchases of treasury stock	(874,000)	(164,000)
Dividends and dividend rights paid	(385,000)	(321,000)
Net change in customer fund deposits	(82,000)	(29,000)
Proceeds from (Payments for) Other Financing Activities	(9,000)	0
Net cash provided by (used in) financing activities	3,072,000	(1,587,000)
Effect of exchange rates on cash, cash equivalents, restricted cash, and restricted cash equivalents	(6,000)	10,000
Net decrease in cash, cash equivalents, restricted cash, and restricted cash equivalents	(1,386,000)	(4,519,000)
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	2,819,000	6,697,000
Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	1,433,000	2,178,000
Reconciliation of cash, cash equivalents, restricted cash, and restricted cash equivalents reported within the condensed consolidated balance sheets to the total amounts reported on the condensed consolidated statements of cash flows
Cash and cash equivalents	1,257,000	1,952,000
Restricted cash and restricted cash equivalents included in funds held for customers	176,000	226,000
Total cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	1,433,000	2,178,000
Supplemental Cash Flow Information [Abstract]
Issuance of common stock in business combinations	$ 6,316,000	$ 3,798,000