Debt - Narrative (Details)				1 Months Ended	3 Months Ended
	May 09, 2023 USD ($)	Oct. 12, 2022 USD ($)	Nov. 01, 2021 USD ($) extension	Jun. 30, 2020 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)	Jul. 31, 2023 USD ($)
Debt Instrument [Line Items]
Restrictive covenant, ratio of total gross debt to EBIDTA			3.25
Restrictive covenant, ratio of annual interest expense to EBIDTA			3.00
Net carrying value of debt					$ 5,879,000,000		$ 6,120,000,000
Unamortized debt issuance costs					51,000,000		10,000,000
Interest paid on revolving credit facility					65,000,000	$ 49,000,000
Unsecured Debt
Debt Instrument [Line Items]
Aggregate principal amount			$ 5,700,000,000
Unsecured Debt | The Rocket Science Group LLC (Mailchimp)
Debt Instrument [Line Items]
Net carrying value of debt			4,700,000,000		0
Line of Credit | Revolving Credit Facility | Subsidiary
Debt Instrument [Line Items]
Secured revolving credit facilities					430,000,000		$ 430,000,000
Revolving Credit Facility Due 2026 | Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate principal amount			1,000,000,000
Option to increase credit amount			$ 400,000,000
Unsecured Term Loan Due 2024 | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			0.00%
Unsecured Term Loan Due 2024 | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			0.125%
Unsecured Term Loan Due 2024 | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			0.625%
Unsecured Term Loan Due 2024 | SOFR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			1.125%
Unsecured Term Loan Due 2024 | Unsecured Debt
Debt Instrument [Line Items]
Aggregate principal amount			$ 4,700,000,000
Amendment to Master Credit Agreement | Unsecured Debt | Term loan
Debt Instrument [Line Items]
Interest paid					42,000,000	41,000,000
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Interest paid					0	0
Revolving credit facility, increase limit			$ 250,000,000
Unsecured revolving credit facility extension | extension			2
Secured revolving credit facilities					0
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			0.00%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			0.10%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			0.69%
Amendment to Master Credit Agreement | Line of Credit | Revolving Credit Facility | SOFR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			1.10%
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					0	0
Redemption price (in percent)				101.00%
Net carrying value of debt					1,500,000,000
Secured revolving credit facilities | Line of Credit | Revolving Credit Facility | Subsidiary
Debt Instrument [Line Items]
Interest paid					5,000,000	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					$ 300,000,000
Line of credit, remaining borrowing capacity	$ 200,000,000
Interest rate at period end					6.95%
Secured revolving credit facilities | Line of Credit | Revolving Credit Facility | Subsidiary | Asset Pledged as Collateral
Debt Instrument [Line Items]
Secured amount					$ 950,000,000
Secured revolving credit facilities | 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 facilities | 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 facilities | 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					2,000,000	$ 0
Line of credit, current borrowing capacity		$ 225,000,000
Line of credit, maximum borrowing capacity		500,000,000
Secured revolving credit facilities					$ 130,000,000
Line of credit, remaining borrowing capacity		$ 275,000,000
Interest rate at period end					6.80%
Secured Revolving Credit Facility, 2022 | Line of Credit | Revolving Credit Facility | Subsidiary | Asset Pledged as Collateral
Debt Instrument [Line Items]
Secured amount					$ 401,000,000
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 | 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
Net carrying value of debt					$ 4,000,000,000