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Guarantees (Tables)
 12 Months Ended
Sep. 30, 2019
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, including extended warranties for which deferred revenue is recorded, for the fiscal years ended September 30, 2019 and 2018 were as follows (in millions):
 
Year Ended
September 30,
 
2019
 
2018
Balance at beginning of period
$
315

 
$
323

Accruals for warranties issued during the period
110

 
128

Accruals from acquisitions and divestitures
1

 
—

Accruals related to pre-existing warranties (including changes in estimates)
(39
)
 
(14
)
Settlements made (in cash or in kind) during the period
(101
)
 
(120
)
Currency translation
(1
)
 
(2
)
Balance at end of period
$
285

 
$
315