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Guarantees (Tables)
12 Months Ended
Sep. 30, 2020
Product Warranties Disclosures [Abstract]  
Changes in Carrying Amount of Product Warranty Liability
The changes in the carrying amount of the Company’s total product warranty liability for continuing operations for the fiscal years ended September 30, 2020 and 2019 were as follows (in millions). Extended warranty for which deferred revenue is recorded is not included in the table below, but rather included within the contract balances table in the Note 4, "Revenue Recognition," of the notes to consolidated financial statements for all periods presented.
 Year Ended
September 30,
 20202019
Balance at beginning of period$156 $197 
Accruals for warranties issued during the period71 78 
Accruals from acquisitions and divestitures— 
Accruals related to pre-existing warranties (including changes in estimates)(39)
Settlements made (in cash or in kind) during the period(71)(79)
Currency translation(2)
Balance at end of period$167 $156