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Supplemental Cash Flow Information - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]    
Fair value of assets contributed as partial consideration $ 6.1  
Note receivable recorded for the sale of an investment $ 4.7  
Appraised value of marine industrial property   $ 6.4