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SEGMENT INFORMATION - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) facility employee	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of employees | employee	12,000
Revenue	$ 7,335	$ 7,826	$ 8,532
Largest Customer | Revenue Benchmark | Customer Concentration Risk
Segment Reporting Information [Line Items]
Revenue	$ 715	793	882
A&T
Segment Reporting Information [Line Items]
Number of facilities | facility	5
Number of employees | employee	3,300
Revenue	$ 1,743	1,853	1,728
P&ARP
Segment Reporting Information [Line Items]
Number of facilities | facility	4
Number of employees | employee	4,100
Revenue	$ 4,183	4,193	4,891
AS&I
Segment Reporting Information [Line Items]
Number of facilities | facility	16
Number of employees | employee	3,900
Revenue	$ 1,403	$ 1,759	$ 1,913

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