Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

v3.22.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
investment
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Fair value of long-term debt $ 4,700.0   $ 4,700.0     $ 5,200.0
Carrying value of long-term debt           $ 5,000.0
Carrying value of equity investment 54.1 $ 117.9 54.1 $ 117.9    
Unrealized loss on equity investment 34.2 5.6 6.4 17.5    
Other income, net 1.8 $ 6.0 12.9 $ 5.1    
Loss to fully impair investment $ 27.5   27.5   $ 19.5  
Number of equity investments sold | investment 2          
Other Current Assets            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Restricted cash and cash equivalents $ 26.8   26.8      
Other Current Liabilities            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Restricted cash and cash equivalents $ 26.8   $ 26.8      
Stock options            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive stock options (in shares) | shares 0.0 0.0 0.0 0.0