v3.19.3.a.u2
Equity method investments in unconsolidated affiliates - B/S (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Assets      
Total assets $ 171.1 $ 220.3 $ 248.8
Liabilities      
Total liabilities 74.5 79.5 85.1
Frederickson      
Assets      
Current assets 2.1 2.5 1.9
Non-current assets 63.9 70.0 76.2
Liabilities      
Current liabilities 0.3   0.4
Non-current liabilities 0.5 0.5 0.4
Orlando Cogen, LP      
Assets      
Current assets 7.8 7.7 9.2
Non-current assets 6.1 7.1 8.1
Liabilities      
Current liabilities 10.2 10.3 10.3
Koma Kulshan Associates      
Assets      
Current assets     0.5
Non-current assets     4.7
Liabilities      
Current liabilities     0.1
Non-current liabilities     0.2
Chambers Cogen, LP      
Assets      
Current assets 14.4 15.6 17.3
Non-current assets 56.5 117.4 130.9
Liabilities      
Current liabilities 13.7 9.2 3.7
Non-current liabilities 48.2 $ 59.5 $ 70.0
Craven County Wood Energy, LP      
Assets      
Current assets 4.4    
Non-current assets 5.8    
Liabilities      
Current liabilities 0.8    
Grayling Generating Station, LP      
Assets      
Current assets 3.3    
Non-current assets 6.8    
Liabilities      
Current liabilities 0.5    
Non-current liabilities $ 0.3