v3.20.2
Segment and Related Information​ - Segment Operating Profit (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Total Segment Adjusted EBITDA $ 172 $ 191 $ 483 $ 589
Stock-based compensation expense (6) (10) (18) (28)
Metal Price Lag (16) (10) (30) (33)
Provision for depreciation and amortization (63) (63) (191) (190)
Restructuring and other charges (3) (64) (61) (104)
Other (14) (12) (42) (54)
Operating Income (Loss) 64 22 126 137
Interest expense (22) (29) (97) (86)
Other (expenses) income, net (27) 0 (69) 4
Provision for income taxes (H) (10) (17) (5) (46)
Net Income (Loss) Attributable to Noncontrolling Interest 0 0 0 0
Income before income taxes 15 (7) (40) 55
Non-service costs — Pension and OPEB (G) 27 28 77 84
Net Income (Loss) Attributable to Parent 5 (24) (45) 9
Non-service costs — Pension and OPEB (G) (20) (1) (59) (2)
Rolled Products [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Total Segment Adjusted EBITDA 138 160 388 499
Provision for depreciation and amortization (48) (46) (147) (139)
Restructuring and other charges (1) (61) (15) (69)
Non-service costs — Pension and OPEB (G) 5 16 13 47
Extrusions [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Total Segment Adjusted EBITDA 6 8 12 6
Provision for depreciation and amortization (6) (7) (18) (22)
Restructuring and other charges (1) (1) (27) (1)
Non-service costs — Pension and OPEB (G) 2 4 5 13
Building and Construction Systems [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Total Segment Adjusted EBITDA 40 39 107 96
Provision for depreciation and amortization (5) (4) (14) (14)
Restructuring and other charges 0 (2) (6) (31)
Non-service costs — Pension and OPEB (G) 0 1 1 4
Other Segments        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Non-service costs — Pension and OPEB (G) 0 3 (1) 7
Corporate Segment        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Corporate Expenses (6) (10) (15) (43)
Restructuring and other charges (3) (2) (67) (5)
Non-service costs — Pension and OPEB (G) 0 3 0 11
Operating segments        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Total Segment Adjusted EBITDA 172 191 483 589
Provision for depreciation and amortization (59) (57) (179) (175)
Restructuring and other charges 0 (62) (6) (99)
Non-service costs — Pension and OPEB (G) 7 21 19 64
Segment Reconciling Items [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Non-service costs — Pension and OPEB (G) $ 0 $ 6 $ (1) $ 18