Revenue - Disaggregated Revenue by Categories (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 824	$ 736	$ 2,429	$ 2,260
North America On-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	457	376	1,333	1,149
North America Off-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	1	9	6	58
Defense
Disaggregation of Revenue [Line Items]
Total Net Sales	53	43	144	103
Outside North America On-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	126	118	369	349
Outside North America Off-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	19	19	83	66
Service Parts, Support Equipment and Other
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 168	$ 171	$ 494	$ 535