Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Disaggregated Revenue by Categories

The following presents disaggregated revenue by categories that best depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (dollars in millions):

	Three months ended September 30,				Nine months ended September 30,
	2019		2018		2019		2018
North America On-Highway	$	369	$	332	$	1,144	$	1,014
North America Off-Highway		6		12		29		76
Defense		40		42		109		122
Outside North America On-Highway		99		96		299		288
Outside North America Off-Highway		24		46		91		82
Service Parts, Support Equipment and Other		131		164		409		484
Total Net Sales	$	669	$	692	$	2,081	$	2,066