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Debt - Convertible Notes Narrative (Details)
1 Months Ended 3 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
Mar. 31, 2017
USD ($)
$ / shares
Oct. 02, 2021
USD ($)
trading_day
$ / shares
Sep. 26, 2020
USD ($)
$ / shares
Jul. 03, 2021
USD ($)
Debt Instrument          
Repurchase of common stock     $ 91,700,000 $ 0  
2026 Notes (2) | Convertible Debt          
Debt Instrument          
Debt, aggregate principal amount $ 1,050,000,000   $ 1,050,000,000   $ 1,050,000,000
Repayments of debt 196,000,000        
Repurchase of common stock $ 200,000,000        
Debt, stated interest rate 0.50%        
Conversion price (in usd per share) | $ / shares $ 99.29   $ 99.29    
Sale price of common stock (in usd per share) | $ / shares     $ 129.08    
Conversion threshold percentage of stock price trigger     130.00%    
Number of days to trigger conversion     20 days    
Conversion threshold consecutive trading days | trading_day     30    
2024 Notes | Convertible Debt          
Debt Instrument          
Debt, aggregate principal amount   $ 450,000,000 $ 450,000,000.0   $ 450,000,000.0
Debt, stated interest rate   0.25%      
Conversion price (in usd per share) | $ / shares   $ 60.62 $ 60.62 $ 60.62  
Conversion price premium percentage   132.50%      
Sale price of common stock (in usd per share) | $ / shares     $ 78.80    
Principal amount of debt converted     $ 100,000    
Conversion threshold percentage of stock price trigger     130.00%    
Number of days to trigger conversion     20 days    
Conversion threshold consecutive trading days | trading_day     30