Revenue

6 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

In the following tables, revenue is disaggregated for each of our operating segments by primary geographical market for the three and six months ended March 31, 2020 and 2019 (in millions).



	Three Months Ended March 31, 2020
Primary Geographical Market	Commercial Truck		Aftermarket, Industrial and Trailer		Total
U.S.	$	269	$	248	$	517
Canada	—		15		15
Mexico	36		9		45
Total North America	305		272		577
Sweden	63		—		63
Italy	46		3		49
United Kingdom	30		3		33
Other Europe	1		36		37
Total Europe	140		42		182
Brazil	50		—		50
China	26		—		26
India	22		—		22
Other Asia-Pacific	14		—		14
Total sales	$	557	$	314	$	871



	Three Months Ended March 31, 2019
Primary Geographical Market	Commercial Truck		Aftermarket, Industrial and Trailer		Total
U.S.	$	413	$	263	$	676
Canada	—		17		17
Mexico	50		13		63
Total North America	463		293		756
Sweden	74		—		74
Italy	59		5		64
United Kingdom	45		2		47
Other Europe	3		19		22
Total Europe	181		26		207
Brazil	63		—		63
China	44		—		44
India	62		—		62
Other Asia-Pacific	24		—		24
Total sales	$	837	$	319	$	1,156



	Six Months Ended March 31, 2020
Primary Geographical Market	Commercial Truck		Aftermarket, Industrial and Trailer		Total
U.S.	$	561	$	491	$	1,052
Canada	—		29		29
Mexico	70		18		88
Total North America	631		538		1,169
Sweden	125		—		125
Italy	91		7		98
United Kingdom	63		5		68
Other Europe	2		73		75
Total Europe	281		85		366
Brazil	103		1		104
China	60		—		60
India	44		1		45
Other Asia-Pacific	28		—		28
Total sales	$	1,147	$	625	$	1,772



	Six Months Ended March 31, 2019
Primary Geographical Market	Commercial Truck		Aftermarket, Industrial and Trailer		Total
U.S.	$	763	$	503	$	1,266
Canada	—		35		35
Mexico	97		23		120
Total North America	860		561		1,421
Sweden	148		—		148
Italy	116		9		125
United Kingdom	86		5		91
Other Europe	6		38		44
Total Europe	356		52		408
Brazil	113		—		113
China	85		—		85
India	119		—		119
Other Asia-Pacific	48		—		48
Total sales	$	1,581	$	613	$	2,194

Contract balances

As of March 31, 2020 and September 30, 2019, Trade receivables, net, which are included in Receivables, trade and other, net, on the Condensed Consolidated Balance Sheet, were $435 million and $517 million, respectively.

For the three and six months ended March 31, 2020 and March 31, 2019, the company had no material bad-debt expense. There were no material contract assets, contract liabilities or deferred contract costs recorded on the Condensed Consolidated Balance Sheet as of March 31, 2020 and September 30, 2019.