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Research and Development (Details) - USD ($) $ in Millions | 12 Months Ended | 48 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2026
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross | $ 31 |
Amount of letters of credit outstanding | $ 6 |
Scenario, Forecast |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross |  | $ 88

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- Definition The amount of costs incurred under a research and development arrangement accounted for as a contract to perform research and development for others. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 730 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483041/730-20-50-1 + Details
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