Quarterly report pursuant to Section 13 or 15(d)

ACQUISITION OF AK STEEL - Pro Forma Information (Details)

v3.20.2
ACQUISITION OF AK STEEL - Pro Forma Information (Details) - AK Steel Holding Corporation [Member] - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Business Acquisition, Pro Forma Revenue $ 979.1 $ 2,233.8 $ 2,427.7 $ 4,021.1
Business Acquisition, Pro Forma Net Income (Loss) (125.3) 184.9 $ (163.7) 128.3
Business Acquisition, Pro Forma Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     24.30%  
Business Acquisition, Pro Forma Income Tax Expense (Benefit) 1.6 (8.0) $ (3.3) 2.8
Fair Value Adjustment to Inventory [Member]        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Business Acquisition, Pro Forma Net Income (Loss) 36.2 18.5 59.4 74.2
Acquisition-related Costs [Member]        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Business Acquisition, Pro Forma Net Income (Loss) 1.8   28.4  
Other Adjustments [Member]        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Business Acquisition, Pro Forma Net Income (Loss) (12.3) (4.0) (1.0) (6.9)
Intersegment Eliminations [Member]        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Business Acquisition, Pro Forma Revenue $ 113.6 $ 189.9 $ 259.2 $ 257.3