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Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Sep. 30, 2017
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PRP site |  |
Commitments And Contingent Liabilities [Line Items] |  |
Estimated future remediation costs | $ 10 |
Non- PRP sites |  |
Commitments And Contingent Liabilities [Line Items] |  |
Estimated future remediation costs | $ 6 |
Penalty Notification Alleging Misclassification of Importation of Certain Goods into U.S. During 2004-2009 | U.S. Customs and Border Protection (CBP) |  |
Commitments And Contingent Liabilities [Line Items] |  |
Assessed penalty |  | $ 18

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