Debt - Narrative (Details)				1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 05, 2024 USD ($)	May 09, 2023	Oct. 12, 2022 USD ($)	Jun. 30, 2020 USD ($)	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)	Dec. 15, 2023 USD ($)	Jul. 31, 2023 USD ($)	Nov. 01, 2021 USD ($)
Debt Instrument [Line Items]
Net carrying value of debt					$ 5,952,000,000		$ 5,952,000,000			$ 6,120,000,000
Unamortized debt issuance costs					48,000,000		48,000,000			10,000,000
Interest paid on revolving credit facility					60,000,000	$ 66,000,000	182,000,000	$ 180,000,000
Line of Credit | Revolving Credit Facility | Subsidiary
Debt Instrument [Line Items]
Secured revolving credit facilities					500,000,000		500,000,000			$ 430,000,000
Unsecured Term Loan Due 2024 | Unsecured Debt
Debt Instrument [Line Items]
Aggregate principal amount											$ 4,700,000,000
Revolving Credit Facility Due 2026 | Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate principal amount											$ 1,000,000,000
Unsecured revolving credit facility | Unsecured Debt | Term loan
Debt Instrument [Line Items]
Interest paid							42,000,000	164,000,000
The Senior Unsecured Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Proceeds from issuance				$ 1,980,000,000
Unamortized discount				2,000,000
Debt issuance costs				$ 15,000,000
Interest paid							10,000,000	12,000,000
Redemption price (in percent)				101.00%
Net carrying value of debt					1,500,000,000		1,500,000,000
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Subsidiary
Debt Instrument [Line Items]
Interest paid							15,000,000	11,000,000
Line of credit, current borrowing capacity									$ 300,000,000
Line of credit, maximum borrowing capacity									500,000,000
Secured revolving credit facilities					$ 275,000,000		$ 275,000,000
Line of credit, remaining borrowing capacity									$ 200,000,000
Interest rate at period end					6.96%		6.96%
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Subsidiary | Asset Pledged as Collateral
Debt Instrument [Line Items]
Secured amount					$ 1,000,000,000		$ 1,000,000,000
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Minimum | Subsidiary
Debt Instrument [Line Items]
Interest rate on unused portion of line of credit		0.25%
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | Maximum | Subsidiary
Debt Instrument [Line Items]
Interest rate on unused portion of line of credit		0.75%
Secured Revolving Credit Facility, 2019 | Line of Credit | Revolving Credit Facility | SOFR | Subsidiary
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary
Debt Instrument [Line Items]
Interest paid							8,000,000	$ 2,000,000
Line of credit, current borrowing capacity			$ 300,000,000
Line of credit, maximum borrowing capacity			500,000,000
Secured revolving credit facilities					$ 225,000,000		$ 225,000,000
Line of credit, remaining borrowing capacity			$ 200,000,000
Interest rate at period end					6.71%		6.71%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary | Asset Pledged as Collateral
Debt Instrument [Line Items]
Secured amount					$ 666,000,000		$ 666,000,000
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Minimum | Subsidiary
Debt Instrument [Line Items]
Interest rate on unused portion of line of credit			0.20%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Maximum | Subsidiary
Debt Instrument [Line Items]
Interest rate on unused portion of line of credit			0.40%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Subsidiary
Debt Instrument [Line Items]
Basis spread on variable rate			1.30%
The 2023 Senior Unsecured Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Proceeds from issuance				$ 3,960,000,000
Unamortized discount				20,000,000
Debt issuance costs				$ 24,000,000
Interest paid							106,000,000
Net carrying value of debt					$ 4,000,000,000		$ 4,000,000,000
2024 Credit Facility | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Restrictive covenant, ratio of total gross debt to EBIDTA	4.00
Option to increase credit amount	$ 1,000,000,000
Line of credit, maximum borrowing capacity	$ 1,500,000,000
Term of option to extend credit agreement	1 year
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.125%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.70%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Interest Benchmark For Relevant Currency | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.70%
2024 Credit Facility | Line of Credit | Revolving Credit Facility | Interest Benchmark For Relevant Currency | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%
2024 Credit Facility | Line of Credit | Swingline Loans
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 500,000,000
2024 Credit Facility | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 250,000,000