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CAPITAL STOCK - Other Equity Arrangements, Additional Information (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
May 15, 2023
$ / shares
Jun. 03, 2021
shares
Jun. 09, 2020
$ / shares
May 15, 2020
$ / shares
Nov. 07, 2019
Nov. 30, 2022
USD ($)
$ / shares
shares
May 31, 2020
USD ($)
$ / shares
shares
Feb. 29, 2020
$ / shares
shares
Nov. 30, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
$ / shares
shares
May 31, 2017
USD ($)
financial_institution
$ / shares
shares
Jul. 03, 2021
$ / shares
shares
Dec. 31, 2022
USD ($)
age
$ / shares
shares
May 23, 2023
$ / shares
Jan. 01, 2022
USD ($)
shares
Apr. 28, 2021
$ / shares
Class of Stock [Line Items]                                
Preferred stock, shares issued (in shares) | shares                     750,000       750,000  
Preferred stock, value, issued | $                         $ 0.0   $ 620.3  
Purchase of call options | $                 $ 19.2   $ 25.1   $ 19.2      
Preferred stock, liquidation preference (in dollars per share)       $ 1,000         $ 1,000   $ 1,000          
Conversion of stock (in shares) | shares           4,723,500 5,463,750                  
Shares issued, price per share (in dollars per share)                         $ 131.32      
Proceeds from issuance or sale of equity | $           $ 750.0                    
Derivative, forward interest rate             5.375%                  
Forward contract indexed to issuer's equity, settlement alternatives, cash, at fair value | $             $ 117.1   $ 114.2              
Accretion expense | $             $ 1.3                  
Option indexed to issuer's equity, number of financial institutions | age                         3      
Option indexed to issuer's equity (in shares) | shares                         3,900,000      
Option indexed to issuer's equity, term                     3 years          
Preferred stock conversion rate number of common stock shares (in shares) | shares                     6.1627   5.2263      
Upper strike percentage against closing price         30.00%                      
Debt Instrument, convertible, beneficial conversion feature | $                     $ 5.4          
Preferred stock, dividend rate       5.00%                        
Preferred stock, dividend rate (in dollars per share)       $ 50.00                        
Convertible preferred stock, shares issued upon conversion (in shares) | shares             0.7285                  
Preferred stock, convertible, conversion price (in dollars per share)             $ 137.26                  
Common stock, forward purchase contract             3 years   3 years   3 years          
Forecast                                
Class of Stock [Line Items]                                
Preferred stock, liquidation preference (in dollars per share)                           $ 1,000    
Preferred stock, dividend rate 10.00%                              
Preferred stock, dividend rate (in dollars per share) $ 100.00                              
Call Option                                
Class of Stock [Line Items]                                
Call option, average price (in dollars per share)                         $ 4.90      
Equity Units And Capped Call Transactions Commenced In 2019                                
Class of Stock [Line Items]                                
Equity unit proceeds | $                 $ 734.5              
Preferred stock, liquidation preference (in dollars per share)                 $ 1,000   $ 1,000          
Shares issued, price per share (in dollars per share)                 $ 100   $ 100          
Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Equity unit proceeds | $                     $ 727.5          
Preferred stock, shares issued (in shares) | shares                     750,000          
Call option, average price (in dollars per share)                     $ 5.43          
Option indexed to issuer's equity (in shares) | shares                     4,600,000          
Adjustments to additional paid in capital, other | $                     $ 25.1          
Equity Units And Capped Call Transactions Commenced in 2018                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity (in shares) | shares                   3,200,000            
Option indexed to issuer's equity, term                   3 years            
Option indexed to issuer's equity, settlement alternatives, shares received (in shares) | shares                       344,004        
Option indexed to issuer's equity, settlement alternatives, average reference price (in dollars per share)               $ 162.26                
2019 Equity Units                                
Class of Stock [Line Items]                                
Derivative, forward interest rate                         5.25%      
Accretion expense | $                         $ 1.3      
2019 Equity Units | Equity Units And Capped Call Transactions Commenced In 2019                                
Class of Stock [Line Items]                                
Forward contract indexed to issuers equity, contract                         3 years      
Minimum                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)                         $ 191.34      
Maximum                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)                         $ 207.29      
Series D Preferred Stock                                
Class of Stock [Line Items]                                
Preferred stock, shares issued (in shares) | shares           750,000     750,000              
Preferred stock, liquidation preference (in dollars per share)           $ 1,000                    
Conversion of stock (in shares) | shares           4,723,500                    
Preferred stock, dividend rate           7.50%                    
Preferred stock, dividend rate (in dollars per share)           $ 75.00                    
Series D Preferred Stock | Equity Units And Capped Call Transactions Commenced In 2019                                
Class of Stock [Line Items]                                
Preferred stock, dividend rate                 0.00%              
Series D Preferred Stock | Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Conversion of stock (in shares) | shares           4,723,500                    
Option indexed to issuer's equity, term                         3 years      
Series D Preferred Stock | 2019 Equity Units                                
Class of Stock [Line Items]                                
Preferred stock, value, issued | $                 $ 620.3              
Series D Preferred Stock | 2019 Equity Units | Equity Units And Capped Call Transactions Commenced In 2019                                
Class of Stock [Line Items]                                
Preferred stock, quarterly payments | $                 114.2              
Series C Preferred Stock                                
Class of Stock [Line Items]                                
Preferred stock, shares issued (in shares) | shares             750,000                  
Preferred stock, liquidation preference (in dollars per share)             $ 1,000                 $ 1,000
Conversion of stock (in shares) | shares             5,463,750                  
Preferred stock conversion rate number of common stock shares (in shares) | shares   6.7548                            
Preferred stock, dividend rate             5.00%                  
Preferred stock, dividend rate (in dollars per share)             $ 50.00                  
Series C Preferred Stock | Equity Units And Capped Call Transactions Commenced In 2019                                
Class of Stock [Line Items]                                
Preferred stock, dividend rate                     0.00%          
Series C Preferred Stock | Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Preferred stock, liquidation preference (in dollars per share)             1,000                  
Option indexed to issuer's equity, strike price (in dollars per share)             $ 148.47                  
Options indexed to issuer's equity, number of counterparties | financial_institution                     3          
Option indexed to issuer's equity, strike price as a percentage of closing stock price                     30.00%          
Series C Preferred Stock | Equity Units And Capped Call Transactions Commenced in 2018                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price as a percentage of closing stock price     30.00%                          
Series C Preferred Stock | 2017 Equity Units                                
Class of Stock [Line Items]                                
Preferred stock, value, issued | $                 605.0              
Series C Preferred Stock | 2017 Equity Units | Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Preferred stock, quarterly payments | $                 $ 117.1              
Series C Preferred Stock | Minimum | Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)                     $ 162.27          
Series C Preferred Stock | Minimum | Equity Units And Capped Call Transactions Commenced in 2018                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)     $ 148.34                          
Series C Preferred Stock | Maximum | Equity Units And Capped Call Transactions Commenced in 2017                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)                     $ 179.53          
Series C Preferred Stock | Maximum | Equity Units And Capped Call Transactions Commenced in 2018                                
Class of Stock [Line Items]                                
Option indexed to issuer's equity, strike price (in dollars per share)     $ 165.00                 $ 209.80        
Common Stock | Equity Units And Capped Call Transactions Commenced in 2018                                
Class of Stock [Line Items]                                
Purchase of call options | $                   $ 57.3            
Call option, average price (in dollars per share)                   $ 17.96            
Option indexed to issuer's equity (in shares) | shares               3,200,000                
Option indexed to issuer's equity, settlement alternatives, shares, at fair value (in shares) | shares               600,000                
Option indexed to issuer's equity, settlement alternatives, shares received (in shares) | shares               61,767