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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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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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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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The cash outflow due to repaying amounts borrowed by issuing commercial paper.

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Commercial Paper, Amount Outstanding

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Debt Instrument, Maximum Borrowing Capacity

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Debt - Additional Information (Detail) € in Billions		1 Months Ended		12 Months Ended
Debt - Additional Information (Detail) € in Billions	Jul. 25, 2019 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 EUR (€)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2022 EUR (€)	Jun. 30, 2022 EUR (€)
Debt Instrument [Line Items]
Repayments of debt				$ 1,000,000,000	$ 3,000,000,000	$ 0
Repayments of commercial paper				$ 950,000,000
Commercial Paper Program
Debt Instrument [Line Items]
Debt term				397 days
Debt instrument, maximum borrowing capacity				$ 3,000,000,000
Commercial paper program, amount outstanding				0	0
Line of Credit \| Revolving Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Debt term	5 years
Maximum borrowing capacity	$ 5,000,000,000
Credit facility amount outstanding				0	$ 0
Senior Notes \| U.S. dollar notes
Debt Instrument [Line Items]
Repayments of debt				$ 1,000,000,000
Senior Notes \| Europe \| June 2022 Notes
Debt Instrument [Line Items]
Aggregate principal		$ 3,200,000,000					€ 3.0	€ 3.0
Net aggregate proceeds		$ 3,200,000,000	€ 3.0
Senior Notes \| Europe \| 1.50% Senior Notes due June 2026
Debt Instrument [Line Items]
Stated interest rate (percent)				1.50%			1.50%
Senior Notes \| Europe \| 2.00% Senior Notes due June 2029
Debt Instrument [Line Items]
Stated interest rate (percent)				2.00%			2.00%
Senior Notes \| Europe \| 2.375% Senior Notes due June 2034
Debt Instrument [Line Items]
Stated interest rate (percent)				2.375%			2.375%
Senior Notes \| Europe \| Maximum \| June 2022 Notes
Debt Instrument [Line Items]
Debt term		12 years	12 years
Senior Notes \| Europe \| Minimum \| June 2022 Notes
Debt Instrument [Line Items]
Debt term		4 years	4 years