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Debt and Credit Arrangements - 2024 Notes Narratives (Details)
$ / shares in Units, shares in Thousands
1 Months Ended 9 Months Ended
Oct. 31, 2017
$ / shares
Dec. 31, 2017
USD ($)
shares
Sep. 30, 2022
USD ($)
day
$ / shares
Dec. 31, 2021
USD ($)
Nov. 06, 2017
USD ($)
Debt Instrument          
Share price (dollars per share) | $ / shares $ 43.50   $ 184.35    
Convertible Debt | Convertible Notes, due 2024          
Debt Instrument          
Debt instrument stated interest rate (percent)         1.00%
Debt instrument face amount     $ 258,800,000 $ 258,800,000 $ 258,800,000
Share conversion rate (per share) 0.0170285        
Debt instrument, conversion price (usd per share) | $ / shares $ 58.725        
Debt instrument, conversion premium 35.00%        
Value of securities above principal amount of debt if converted     $ 553,500,000    
Debt instrument, threshold for consecutive trading days | day     20    
Debt instrument, threshold for consecutive trading days | day     30    
Applicable conversion price threshold (as percentage)     130.00%    
Maximum days after five trading days     5 days    
Applicable conversion price, less than (as percentage)     97.00%    
Trigger price (usd per share) | $ / shares     $ 76.3425    
Non cash payment for derivative instrument   $ 59,500,000      
Number of shares underlying warrant | shares   4,410      
Proceeds from issuances of warrants   $ 46,000,000.0      
Percentage above previous sales price 65.00%        
Net cost of convertible note hedge and warrant     $ 13,500,000    
Convertible Debt | Convertible Notes, due 2024 | Maximum          
Debt Instrument          
Debt instrument, conversion price (usd per share) | $ / shares $ 71.775