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Borrowings - Encore Convertible Notes and Exchangeable Notes - Table and Narrative (Details)
3 Months Ended
Mar. 31, 2022
USD ($)
day
program
$ / shares
Mar. 15, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
Sep. 30, 2021
$ / shares
Debt Instrument [Line Items]        
Debt issued $ 272,500,000   $ 422,500,000  
Initial conversion price (USD per share) | $ / shares   $ 45.33    
Maximum Stock Price at Time of Conversion | $ / shares       $ 79.32
Debt Conversion, Converted Instrument, Amount $ 221,200,000      
Number Of Hedging Programs | program 1      
Combination Settlement Ratio 1.75      
Convertible Notes | 2022 Convertible Notes        
Debt Instrument [Line Items]        
Debt issued $ 0 $ 150,000,000 150,000,000  
Stated interest rate (as a percent) 3.25%      
Debt Instrument, Convertible, If-converted Value in Excess of Principal $ 71,200,000      
Convertible Notes | 2025 Convertible Notes        
Debt Instrument [Line Items]        
Debt issued $ 100,000,000   100,000,000  
Stated interest rate (as a percent) 3.25%      
Initial conversion price (USD per share) | $ / shares $ 40.00      
Closing stock price at date of issuance (in dollars per share) | $ / shares $ 32.00      
Debt Instrument, Convertible Or Exchangeable, Initial Conversion Ratio 25.0000      
Debt Instrument, Convertible Or Exchangeable, Adjusted Conversion Ratio 25.1310      
Debt Instrument, Convertible Or Exchangeable, Effective Conversion Price $ 39.79      
Debt Instrument, Convertible, If-converted Value in Excess of Principal $ 57,647,000      
Debt Instrument, Convertible, Threshold Trading Days | day 20      
Debt Instrument, Convertible, Threshold Consecutive Trading Days | day 30      
Exchangeable Notes | 2023 Exchangeable Notes        
Debt Instrument [Line Items]        
Debt issued $ 172,500,000   $ 172,500,000  
Stated interest rate (as a percent) 4.50%      
Initial conversion price (USD per share) | $ / shares $ 44.62      
Closing stock price at date of issuance (in dollars per share) | $ / shares $ 36.45      
Debt Instrument, Convertible Or Exchangeable, Initial Conversion Ratio 22.4090      
Debt Instrument, Convertible Or Exchangeable, Adjusted Conversion Ratio 22.5264      
Debt Instrument, Convertible Or Exchangeable, Effective Conversion Price $ 62.13      
Debt Instrument, Convertible, If-converted Value in Excess of Principal $ 71,256,000      
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger 130.00%