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Debt and Financing Arrangements - Additional Information (Detail) € in Millions, $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 EUR (€) | Dec. 31, 2021 USD ($) | Sep. 30, 2021 USD ($)
Debt Instrument [Line Items] |  |  |
Commercial Paper |  | $ 150 | $ 0
$2.5 billion facility expiring Dec 2024 [Domain] |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 2,500 |
$500 million facility expiring Dec 2022 [Domain] |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 500 |
Bank term loan due October 2022 |  |  |
Debt Instrument [Line Items] |  |  |
Proceeds from Short-term Debt | € | € 200 |  |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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