v3.23.1
Newbuildings (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Carrying Value Of New Buildings [Roll Forward]    
Opening balance $ 135.5 $ 135.5
Disposals (7.6) 0.0
Impairment (124.4) 0.0
Total newbuildings $ 3.5 $ 135.5