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Debt and Credit Facility - Conversion Features (Details)
3 Months Ended 9 Months Ended
Oct. 01, 2019
Dec. 31, 2019
Dec. 31, 2019
USD ($)
day
Debt Instrument [Line Items]      
If-converted value in excess of principal | $     $ 1,000
Convertible Debt      
Debt Instrument [Line Items]      
Debt instrument, redemption price, percentage     100.00%
Convertible Debt | Debt Instrument, Redemption, Period One      
Debt Instrument [Line Items]      
Threshold percentage of stock price trigger     130.00%
Threshold trading days | day     20
Threshold consecutive trading days | day     30
Convertible Debt | Debt Instrument, Redemption, Period Two      
Debt Instrument [Line Items]      
Threshold percentage of stock price trigger     98.00%
Threshold trading days | day     5
Threshold consecutive trading days | day     10
Senior Subordinated Convertible Debt | 2015 Senior Convertible Debt      
Debt Instrument [Line Items]      
Threshold percentage of stock price trigger   130.00%  
If-converted value in excess of principal | $     $ 1,820,000,000
Conversion rate 18.9958   16.2513
Senior Subordinated Convertible Debt | 2017 Junior Convertible Debt      
Debt Instrument [Line Items]      
If-converted value in excess of principal | $     $ 114,100,000
Senior Subordinated Convertible Debt | 2017 Senior Convertible Debt      
Debt Instrument [Line Items]      
If-converted value in excess of principal | $     $ 283,500,000
Conversion rate     10.4213