Debt - Narrative (Details)				1 Months Ended			12 Months Ended
	Apr. 30, 2024 USD ($)	Feb. 05, 2024 USD ($)	Jul. 18, 2022 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2020 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Nov. 01, 2021 USD ($)
Total principal balance of debt
Amount outstanding on loan							$ 6,038,000,000	$ 6,120,000,000
Interest paid							200,000,000	272,000,000	$ 67,000,000
Fair value of amount outstanding							0
Line of Credit | Revolving Credit Facility | Subsidiary
Total principal balance of debt
Amount outstanding under credit facility							585,000,000	430,000,000
The Notes | Senior Unsecured Notes
Total principal balance of debt
Proceeds from issuance of long-term debt, net of discount and issuance costs						$ 1,980,000,000
Debt discount						2,000,000
Debt issuance costs						$ 15,000,000
Amount outstanding on loan							1,500,000,000
Interest paid							20,000,000	23,000,000	23,000,000
Repurchase price (in percent)						101.00%
Amendment to Master Credit Agreement | Term loan
Total principal balance of debt
Interest paid							42,000,000	230,000,000	42,000,000
Revolving Credit Facility Due 2026 | Unsecured Debt
Total principal balance of debt
Aggregate principal amount										$ 1,000,000,000
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							20,000,000	16,000,000	$ 2,000,000
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							$ 285,000,000
Weighted-average interest rate							6.99%
Amounts secured on outstanding balance							$ 1,100,000,000
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 | Secured Overnight Financing Rate (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							12,000,000	$ 4,000,000
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
Weighted-average interest rate							6.68%
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							$ 832,000,000
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 | Secured Overnight Financing Rate (SOFR) | Subsidiary
Total principal balance of debt
Basis spread on variable rate	1.30%
The 2023 Senior Unsecured Notes
Total principal balance of debt
Proceeds from issuance of long-term debt, net of discount and issuance costs					$ 3,960,000,000
Debt discount					20,000,000
Debt issuance costs					24,000,000
Amount outstanding on loan					$ 4,000,000,000
The 2023 Senior Unsecured Notes | Senior Unsecured Notes
Total principal balance of debt
Interest paid							106,000,000
Commercial Paper Program | Line of Credit
Total principal balance of debt
Commercial paper							0
Commercial Paper Program | Line of Credit | Commercial Paper
Total principal balance of debt
Revolving credit facility				$ 1,500,000,000
Maturity of commercial paper				397 days
2024 Credit Facility | Line of Credit | Revolving Credit Facility
Total principal balance of debt
Amount outstanding on loan							0
Interest paid							$ 0
Revolving credit facility		$ 1,500,000,000
Option to increase credit amount		$ 1,000,000,000
Term of option to extend line of credit facility		1 year
Restrictive covenant, ratio, total gross debt to EBIDTA		4.00
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Base Rate | Minimum
Total principal balance of debt
Basis spread on variable rate		0.00%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Base Rate | Maximum
Total principal balance of debt
Basis spread on variable rate		0.125%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Total principal balance of debt
Basis spread on variable rate		0.70%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Total principal balance of debt
Basis spread on variable rate		1.125%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Interest Benchmark For Relevant Currency | Minimum
Total principal balance of debt
Basis spread on variable rate		0.70%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Interest Benchmark For Relevant Currency | Maximum
Total principal balance of debt
Basis spread on variable rate		1.125%
2024 Credit Facility | Line of Credit | Swingline Loans
Total principal balance of debt
Revolving credit facility		$ 500,000,000
2024 Credit Facility | Line of Credit | Letter of Credit
Total principal balance of debt
Revolving credit facility		$ 250,000,000