REVENUE - Disaggregation of Revenue by Geographical Market and Industry (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 11,783	$ 12,011	$ 9,663
United States
Disaggregation of Revenue [Line Items]
Revenues	10,932	11,073	8,679
Canada
Disaggregation of Revenue [Line Items]
Revenues	538	528	503
Europe
Disaggregation of Revenue [Line Items]
Revenues		150	262
Mexico
Disaggregation of Revenue [Line Items]
Revenues	313	260	219
SCS
Disaggregation of Revenue [Line Items]
Revenues	4,875	4,720	3,155
Operating Segments | FMS
Disaggregation of Revenue [Line Items]
Revenues	5,930	6,327	5,680
Operating Segments | FMS | United States
Disaggregation of Revenue [Line Items]
Revenues	5,616	5,858	5,116
Operating Segments | FMS | Canada
Disaggregation of Revenue [Line Items]
Revenues	314	319	302
Operating Segments | FMS | Europe
Disaggregation of Revenue [Line Items]
Revenues		150	262
Operating Segments | FMS | Mexico
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments | SCS
Disaggregation of Revenue [Line Items]
Revenues	4,875	4,720	3,155
Operating Segments | SCS | United States
Disaggregation of Revenue [Line Items]
Revenues	4,295	4,209	2,706
Operating Segments | SCS | Canada
Disaggregation of Revenue [Line Items]
Revenues	267	251	230
Operating Segments | SCS | Europe
Disaggregation of Revenue [Line Items]
Revenues		0	0
Operating Segments | SCS | Mexico
Disaggregation of Revenue [Line Items]
Revenues	313	260	219
Operating Segments | DTS
Disaggregation of Revenue [Line Items]
Revenues	1,785	1,786	1,457
Operating Segments | DTS | United States
Disaggregation of Revenue [Line Items]
Revenues	1,785	1,786	1,457
Operating Segments | DTS | Canada
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments | DTS | Europe
Disaggregation of Revenue [Line Items]
Revenues		0	0
Operating Segments | DTS | Mexico
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(807)	(822)	(629)
Eliminations | United States
Disaggregation of Revenue [Line Items]
Revenues	(764)	(780)	(600)
Eliminations | Canada
Disaggregation of Revenue [Line Items]
Revenues	(43)	(42)	(29)
Eliminations | Europe
Disaggregation of Revenue [Line Items]
Revenues		0	0
Eliminations | Mexico
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 0