Quarterly report pursuant to Section 13 or 15(d)

ACQUISITION OF AK STEEL - Intangible Assets and Liabilities (Details)

v3.20.2
ACQUISITION OF AK STEEL - Intangible Assets and Liabilities (Details) - AK Steel Holding Corporation [Member]
$ in Millions
 6 Months Ended
Jun. 30, 2020
USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]  
Finite-lived Intangible Assets Acquired $ 148.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years) 17 years
Intangible Liability Assumed $ (75.0)
Assumed Finite-lived Intangible Liabilities, Weighted Average Useful Life (in years) 12 years
Customer Relationships [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Finite-lived Intangible Assets Acquired $ 77.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years) 18 years
Technology-Based Intangible Assets [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Finite-lived Intangible Assets Acquired $ 60.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years) 17 years
Trademarks and Trade Names [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Finite-lived Intangible Assets Acquired $ 11.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years) 10 years