XML 41 R29.htm IDEA: XBRL DOCUMENT v3.21.2
FINANCIAL INSTRUMENTS - Summary of Equity Investment Activity (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Sep. 30, 2021
Jan. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Equity investments with readily determinable value beginning balance, Carrying Value   $ 60.1 $ 60.1  
Net unrealized gains/(losses) on investments $ 12.3   21.9  
Proceeds from sale of available-for-sale securities, equity   71.5    
Gain (loss) on sale of equity investments   11.4    
Gain (loss) on sale of derivatives   7.5    
Realized investment gains (losses)       $ 8.3
Level 1        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Equity investments with readily determinable value beginning balance, Carrying Value   60.1 60.1  
Changes in fair value, Level 1     (0.9)  
Sales/Purchases/Others, Level 1     (15.4)  
Level 2        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Equity investments without readily determinable value, Carrying Value   $ 30.2 30.2  
Changes in fair value, Level 2     34.5  
Sales/Purchases/Others, Level 2     (52.2)  
Equity investments without readily determinable value, portion attributable to investment in preferred shares     $ 34.2