v3.25.2
SEGMENT INFORMATION - Schedule of Segment Adjusted EBITDA and reconciliation of Adjusted EBITDA to Net Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Segment Adjusted EBITDA $ 159 $ 180 $ 299 $ 340
Metal price lag (13) 45 33 31
Depreciation and amortization (82) (76) (160) (151)
Impairment of assets 0 (5) 0 (8)
Share based compensation costs (7) (7) (13) (13)
Pension and other post-employment benefits - non - operating gains 4 4 7 7
Restructuring costs (1) (3) (2) (3)
Unrealized gains on derivatives 33 4 21 0
Unrealized exchange gains from the remeasurement of monetary assets and liabilities – net 1 0 0 2
Losses on disposal (1) 0 (1) (1)
Other (2) (8) 1 (8)
Expenses on factoring arrangements (6) (5) (11) (10)
Finance costs - net (29) (25) (56) (52)
Income before tax 56 104 118 134
Income tax expense (20) (27) (44) (35)
Net income 36 77 74 99
Other costs related to transformation projects       2
Flooding of facilities, Valais, Switzerland        
Segment Reporting Information [Line Items]        
Insurance proceeds from catastrophes     9  
Loss from catastrophes 2   7  
Inventory write-down   6   6
A&T        
Segment Reporting Information [Line Items]        
Segment Adjusted EBITDA 78 90 153 177
P&ARP        
Segment Reporting Information [Line Items]        
Segment Adjusted EBITDA 74 66 135 114
AS&I        
Segment Reporting Information [Line Items]        
Segment Adjusted EBITDA 18 30 34 63
H&C        
Segment Reporting Information [Line Items]        
Segment Adjusted EBITDA $ (12) $ (6) $ (23) $ (14)