Segment Information - Schedule of Disaggregation of Revenue by Geographical Market (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 3,716	$ 4,055	$ 11,126	$ 11,666
Americas
Disaggregation of Revenue [Line Items]
Net sales	1,737	1,900	5,044	5,385
United States
Disaggregation of Revenue [Line Items]
Net sales	1,515	1,685	4,428	4,868
Mexico
Disaggregation of Revenue [Line Items]
Net sales	674	714	1,934	1,942
Other Americas
Disaggregation of Revenue [Line Items]
Net sales	77	84	224	266
EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,288	1,437	3,926	4,020
Germany
Disaggregation of Revenue [Line Items]
Net sales	245	278	723	831
Poland
Disaggregation of Revenue [Line Items]
Net sales	237	268	735	728
Czech Republic
Disaggregation of Revenue [Line Items]
Net sales	179	250	594	738
Other EMEA
Disaggregation of Revenue [Line Items]
Net sales	967	1,028	2,937	2,833
Asia
Disaggregation of Revenue [Line Items]
Net sales	712	743	2,224	2,338
China
Disaggregation of Revenue [Line Items]
Net sales	346	336	1,056	1,041
Korea
Disaggregation of Revenue [Line Items]
Net sales	129	137	379	416
Thailand
Disaggregation of Revenue [Line Items]
Net sales	106	123	354	418
Japan
Disaggregation of Revenue [Line Items]
Net sales	77	91	256	281
Other Asia
Disaggregation of Revenue [Line Items]
Net sales	67	66	216	209
Inter-segment elimination
Disaggregation of Revenue [Line Items]
Net sales	(21)	(25)	(68)	(77)
Inter-segment elimination | Americas
Disaggregation of Revenue [Line Items]
Net sales	(529)	(583)	(1,542)	(1,691)
Inter-segment elimination | EMEA
Disaggregation of Revenue [Line Items]
Net sales	(340)	(387)	(1,063)	(1,110)
Inter-segment elimination | Asia
Disaggregation of Revenue [Line Items]
Net sales	$ (13)	$ (10)	$ (37)	$ (27)