SEGMENT INFORMATION - Schedule of Segment Assets (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Segment Reporting Information [Line Items]
Assets	$ 5,845	$ 5,354
Deferred tax assets	202	270
Cash and cash equivalents	143	120
Corporate non segment
Segment Reporting Information [Line Items]
Deferred tax assets	202	270
Cash and cash equivalents	143	120
Fair value of derivatives instruments and other financial assets	136	83
A&T \| Segments
Segment Reporting Information [Line Items]
Assets	1,501	1,375
P&ARP \| Segments
Segment Reporting Information [Line Items]
Assets	2,664	2,405
AS&I \| Segments
Segment Reporting Information [Line Items]
Assets	731	711
H&C \| Segments
Segment Reporting Information [Line Items]
Assets	$ 468	$ 390

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