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Borrowings - Narrative (Details)			1 Months Ended
	Sep. 30, 2024 USD ($)	Jan. 09, 2024 USD ($)	Sep. 30, 2023 USD ($)	Apr. 30, 2025 USD ($) program	Oct. 31, 2024 USD ($)	Oct. 01, 2024 USD ($)
Unsecured Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility	$ 5,250,000,000
Debt term	5 years
Line of credit				$ 0	$ 0
Unsecured Revolving Credit Facility | Available Upon Closing Of Juniper Acquisition
Line of Credit Facility [Line Items]
Borrowing capacity	$ 500,000,000
Unsecured Revolving Credit Facility | Immediately Available
Line of Credit Facility [Line Items]
Borrowing capacity	4,750,000,000
Commercial paper
Line of Credit Facility [Line Items]
Number of commercial paper programs | program				2
Maximum borrowing capacity under credit facility				$ 4,750,000,000
Amount outstanding				0	0
Commercial paper | Euro Commercial Paper Program
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility				3,000,000,000
Commercial paper | Euro Commercial Paper Certificate of Deposit Programme
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility				1,000,000,000
Commercial paper | Euro Commercial Paper Certificate of Deposit Programme | Hewlett Packard Enterprise
Line of Credit Facility [Line Items]
Amount outstanding				662,000,000	649,000,000
Uncommitted Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility			$ 500,000,000
Debt term			5 years
Line of credit				0	$ 0
Senior Unsecured Delayed Draw Term Loan Issued September 2024
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility	12,000,000,000
Debt, long-term and short-term, combined amount				$ 0
Senior Unsecured Delayed Draw Term Loan Issued September 2024 | Line of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity under credit facility	$ 9,000,000,000					$ 1,000,000,000
Debt term	364 days
Line of Credit | Senior Unsecured Delayed Draw Term Loan
Line of Credit Facility [Line Items]
Debt term		3 years
Amount issued		$ 3,000,000,000

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Number Of Commercial Paper Programs Maintained

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Face (par) amount of debt instrument at time of issuance.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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