Debt - Narrative (Details)				1 Months Ended		3 Months Ended	12 Months Ended
	Oct. 12, 2022 USD ($)	Jul. 18, 2022 USD ($)	Nov. 01, 2021 USD ($) extension	Jun. 30, 2021 series	Jun. 30, 2020 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)
Total principal balance of debt
Number of unsecured note series | series				4
Interest paid							$ 272,000,000	$ 67,000,000	$ 30,000,000
Amount outstanding on loan						$ 6,120,000,000	6,120,000,000	6,914,000,000
Fair value of amount outstanding						0	0
Line of Credit | Revolving Credit Facility
Total principal balance of debt
Interest paid							0	0	1,000,000
Line of Credit | Revolving Credit Facility | Subsidiary
Total principal balance of debt
Amount outstanding under credit facility						430,000,000	430,000,000	230,000,000
Unsecured Debt
Total principal balance of debt
Aggregate principal amount			$ 5,700,000,000
Unsecured Debt | The Rocket Science Group, LLC (Mailchimp)
Total principal balance of debt
Amount outstanding on loan						4,200,000,000	4,200,000,000
The Notes | Senior Unsecured Notes
Total principal balance of debt
Proceeds from issuance of long-term debt					$ 1,980,000,000
Debt discount					2,000,000
Debt issuance costs					$ 15,000,000
Repayment of loans						500,000,000
Interest paid							23,000,000	23,000,000	24,000,000
Repurchase price (in percent)					101.00%
Amendment to Master Credit Agreement | Term loan
Total principal balance of debt
Interest paid							230,000,000	42,000,000	2,000,000
Amendment to Master Credit Agreement | Line of Credit
Total principal balance of debt
Debt instrument, covenant, debt to EBITDA ratio, maximum			3.25
Debt instrument, covenant, EBITDA to annual interest expense ratio, minimum			3.00
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility
Total principal balance of debt
Revolving credit facility, increase limit			$ 250,000,000
Debt instrument, maturity date extension | extension			2
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Minimum
Total principal balance of debt
Basis spread on variable rate			0.00%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Maximum
Total principal balance of debt
Basis spread on variable rate			0.10%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | SOFR | Minimum
Total principal balance of debt
Basis spread on variable rate			1.10%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | SOFR | Maximum
Total principal balance of debt
Basis spread on variable rate			0.69%
Revolving Credit Facility Due 2026 | Unsecured Debt
Total principal balance of debt
Aggregate principal amount			$ 1,000,000,000
Revolving Credit Facility Due 2026 | Revolving Credit Facility
Total principal balance of debt
Option to increase credit amount			$ 400,000,000
Unsecured Term Loan Due 2024 | Base Rate | Minimum
Total principal balance of debt
Basis spread on variable rate			0.00%
Unsecured Term Loan Due 2024 | Base Rate | Maximum
Total principal balance of debt
Basis spread on variable rate			0.125%
Unsecured Term Loan Due 2024 | SOFR | Minimum
Total principal balance of debt
Basis spread on variable rate			0.625%
Unsecured Term Loan Due 2024 | SOFR | Maximum
Total principal balance of debt
Basis spread on variable rate			1.125%
Unsecured Term Loan Due 2024 | Unsecured Debt
Total principal balance of debt
Aggregate principal amount			$ 4,700,000,000
Secured Revolving Credit Facility, 2019 | Revolving Credit Facility
Total principal balance of debt
Interest paid							16,000,000	$ 2,000,000	$ 3,000,000
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Subsidiary
Total principal balance of debt
Revolving credit facility		$ 500,000,000
Committed portion of revolving credit facility		300,000,000
Uncommitted portion of revolving credit facility		$ 200,000,000
Amount outstanding under credit facility						$ 300,000,000	$ 300,000,000
Weighted-average interest rate						6.91%	6.91%
Amounts secured on outstanding balance						$ 912,000,000	$ 912,000,000
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Subsidiary | Minimum
Total principal balance of debt
Interest accrual, unused portion		0.25%
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Subsidiary | Maximum
Total principal balance of debt
Interest accrual, unused portion		0.75%
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | SOFR | Subsidiary
Total principal balance of debt
Basis spread on variable rate		1.50%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary
Total principal balance of debt
Interest paid							4,000,000
Revolving credit facility	$ 500,000,000
Committed portion of revolving credit facility	150,000,000
Uncommitted portion of revolving credit facility	$ 350,000,000
Amount outstanding under credit facility						$ 130,000,000	$ 130,000,000
Weighted-average interest rate						6.64%	6.64%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary | Asset Pledged as Collateral
Total principal balance of debt
Amounts secured on outstanding balance						$ 375,000,000	$ 375,000,000
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary | Minimum
Total principal balance of debt
Interest accrual, unused portion	0.20%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary | Maximum
Total principal balance of debt
Interest accrual, unused portion	0.40%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | SOFR | Subsidiary
Total principal balance of debt
Basis spread on variable rate	1.30%