v3.19.3.a.u2
Fair value of financial instruments - carrying value and FV (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Fair value of financial instruments    
Restricted cash $ 7.7 $ 2.1
Derivative assets current 0.7 4.2
Derivative assets non-current   0.3
Derivative liabilities current 12.0 4.5
Derivative liabilities non-current 15.9 15.4
Long-term debt, including current portion 560.4  
Carrying Amount    
Fair value of financial instruments    
Cash and cash equivalents 74.9 68.3
Restricted cash 7.7 2.1
Derivative assets current 0.7 4.2
Derivative assets non-current   0.3
Derivative liabilities current 12.0 4.5
Derivative liabilities non-current 15.9 15.4
Long-term debt, including current portion 560.4 625.0
Convertible debentures 88.5 102.4
Fair Value    
Fair value of financial instruments    
Cash and cash equivalents 74.9 68.3
Restricted cash 7.7 2.1
Derivative assets current 0.7 4.2
Derivative assets non-current   0.3
Derivative liabilities current 12.0 4.5
Derivative liabilities non-current 15.9 15.4
Long-term debt, including current portion 589.5 607.6
Convertible debentures $ 93.0 $ 101.8