XML 159 R146.htm IDEA: XBRL DOCUMENT v3.22.0.1
FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Mar. 12, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Cash proceeds   $ 48.0      
Redeemable non-controlling interest     $ 0.0 $ 43.7  
Estimate of Fair Value Measurement          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Fair value of debt     $ 1,706.1 2,199.2  
Island Offshore Management AS          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Acquisition of non-controlling interest $ 48.6        
Redeemable non-controlling interest       $ 43.7  
Island Offshore Management AS | TIOS AS          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Noncontrolling interest, ownership percentage by noncontrolling owners       51.00%  
Island Offshore Management AS | TIOS AS | Share Purchase Agreement          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Purchased shares (percentage)         51.00%
Remaining interest (percentage) 49.00%