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Segment Information - Disaggregation of Revenue by Geographical Market (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 3,480	$ 3,848
Americas
Disaggregation of Revenue [Line Items]
Net sales	1,498	1,737
United States
Disaggregation of Revenue [Line Items]
Net sales	1,331	1,548
Mexico
Disaggregation of Revenue [Line Items]
Net sales	541	641
Other Americas
Disaggregation of Revenue [Line Items]
Net sales	91	92
EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,230	1,604
Germany
Disaggregation of Revenue [Line Items]
Net sales	233	314
Czech Republic
Disaggregation of Revenue [Line Items]
Net sales	267	338
Other EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,039	1,385
Asia
Disaggregation of Revenue [Line Items]
Net sales	784	554
Thailand
Disaggregation of Revenue [Line Items]
Net sales	135	105
China
Disaggregation of Revenue [Line Items]
Net sales	414	189
Japan
Disaggregation of Revenue [Line Items]
Net sales	35	89
Other Asia
Disaggregation of Revenue [Line Items]
Net sales	206	177
Inter-segment elimination
Disaggregation of Revenue [Line Items]
Net sales	(32)	(47)
Inter-segment elimination | Americas
Disaggregation of Revenue [Line Items]
Net sales	(465)	(544)
Inter-segment elimination | EMEA
Disaggregation of Revenue [Line Items]
Net sales	(309)	(433)
Inter-segment elimination | Asia
Disaggregation of Revenue [Line Items]
Net sales	$ (6)	$ (6)

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