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Long-Lived Assets Held for Sale or Disposed of (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 29, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Impairment of assets related to materials & construction     $ (5.6)  
Goodwill   $ 10.5   $ 15.4
CRE        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Goodwill   8.7   $ 8.7
Port Allen Solar Power Facility assets | Sold        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Purchase consideration upon disposal   17.1    
Net gain (loss) on disposal   $ 8.9    
GPRM | Held for sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Ownership interest sold       51.00%
GPRM | Sold        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Purchase consideration upon disposal $ 5.0      
Net gain (loss) on disposal $ (0.1)      
Ownership interest sold 51.00%