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Equity and Long-term Investments and Fair Value Measurements - Equity Investment in Armata (Details)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Jan. 23, 2026
Aug. 11, 2025
USD ($)
Mar. 12, 2025
USD ($)
Nov. 12, 2024
Mar. 04, 2024
USD ($)
Jul. 10, 2023
USD ($)
Jan. 10, 2023
USD ($)
Feb. 09, 2022
Mar. 31, 2021
Dec. 31, 2025
USD ($)
BoardMember
$ / shares
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
Mar. 31, 2020
Equity Investment                          
Exercise price of warrants | $ / shares                   $ 18.11      
Armata Convertible Note | Secured Convertible Credit Agreement                          
Equity Investment                          
Term loan facility in aggregate amount             $ 30.0            
Debt Instrument, annual interest rate             8.00%            
Debt instrument maturity date       Jan. 10, 2026   Jan. 10, 2025              
Armata                          
Equity Investment                          
Number of Warrants Owned | shares                   10,653,847 19,364,647    
Total number of directors | BoardMember                   7      
Number of shares owned | shares                   25,076,769 25,076,769    
Debt instrument maturity date Jan. 26, 2031                        
Percentage of maximum voting rights               49.50% 49.50%        
Special terms on re-designating board member to board of investee               In addition, as of February 9, 2022, Armata entered into an amended and restated investor rights agreement with the Company and ISO, pursuant to which for as long as the Company and ISO hold at least 12.5% of the outstanding shares of Armata’s common stock on a fully-diluted, the Company and ISO shall have the right to designate two directors to Armata’s board of directors, and for so long as the Company and ISO hold at least 8%, but less than 12.5%, of the outstanding shares of Armata’s common stock on a fully-diluted basis, the Company and ISO shall have the right to designate one director to Armata’s board of directors, subject to certain conditions and qualifications set forth in the amended and restated investor rights agreement.          
Armata | July 2023 Credit and Security Agreement                          
Equity Investment                          
Term loan facility in aggregate amount           $ 25.0              
Debt Instrument, annual interest rate           14.00%              
Debt instrument maturity date       Jan. 10, 2026   Jan. 10, 2025              
Armata | March 2024 Credit and Security Agreement                          
Equity Investment                          
Term loan facility in aggregate amount         $ 35.0                
Debt Instrument, annual interest rate         14.00%                
Debt instrument maturity date         Jun. 04, 2025                
Armata | Secured Convertible Credit Agreement                          
Equity Investment                          
Debt instrument, description             On January 10, 2023, we entered into a Secured Convertible Credit Agreement (the “Credit Agreement”) with Armata, under which we invested in a one-year convertible note (the “Armata Convertible Note”) in an aggregate amount of $30.0 million at an interest rate of 8.0% per annum.            
Debt instrument, term             1 year            
Armata | Consolidated Investees                          
Equity Investment                          
Equity method investment ownership percentage                   68.80% 69.30%    
Armata | Two Directors                          
Equity Investment                          
Armata outstanding shares percentage               12.50%          
Armata | Common stock and warrants                          
Equity Investment                          
Unrealized gain                   $ 141.4   $ 77.4  
Unrealized loss                     $ 64.3    
Armata | Warrants purchased in 2020                          
Equity Investment                          
Exercise price of warrants | $ / shares                   $ 2.87      
Term of warrants                         5 years
Armata | Warrants purchased in 2021                          
Equity Investment                          
Exercise price of warrants | $ / shares                   3.25      
Term of warrants                 5 years        
Armata | Warrants purchased in 2022                          
Equity Investment                          
Exercise price of warrants | $ / shares                   $ 5      
Term of warrants               5 years          
Armata | Warrants                          
Equity Investment                          
Equity and long-term investments at fair value                   $ 36.2 5.9    
Armata | Common stock                          
Equity Investment                          
Equity and long-term investments at fair value                   157.5 46.4    
Armata | Armata Convertible Note                          
Equity Investment                          
Principal amount of term loans owned                   85.1      
Equity and long-term investments at fair value                   101.4 42.1    
Unrealized gain                       21.8  
Unrealized loss                   59.3 9.8    
Armata | Armata July 2023 Term Loan                          
Equity Investment                          
Equity and long-term investments at fair value                   32.9 30.2    
Unrealized gain                   2.7 3.2 $ 2.0  
Armata | Armata March 2024 Term Loan                          
Equity Investment                          
Equity and long-term investments at fair value                   43.3 39.3    
Unrealized gain                   4.0 $ 4.3    
Armata | Armata March 2025 Term Loan                          
Equity Investment                          
Equity and long-term investments at fair value                   11.1      
Unrealized gain                   1.1      
Armata | Armata August 2025 Term Loan                          
Equity Investment                          
Equity and long-term investments at fair value                   15.5      
Unrealized gain                   $ 0.5      
Minimum | Armata | One Director                          
Equity Investment                          
Armata outstanding shares percentage               8.00%          
Minimum | Armata | Warrants                          
Equity Investment                          
Exercise price of warrants | $ / shares                   $ 3.25      
Maximum | Armata | One Director                          
Equity Investment                          
Armata outstanding shares percentage               12.50%          
Maximum | Armata | Warrants                          
Equity Investment                          
Exercise price of warrants | $ / shares                   $ 5      
Innoviva Strategic Opportunities, LLC | Armata                          
Equity Investment                          
Total number of directors | BoardMember                   2      
Principal amount of convertible notes owned                   $ 30.1      
Innoviva Strategic Opportunities, LLC | Armata | March 2025 Credit and Security Agreement                          
Equity Investment                          
Term loan facility in aggregate amount     $ 10.0                    
Debt Instrument, annual interest rate     14.00%                    
Debt instrument maturity date     Mar. 12, 2026                    
Innoviva Strategic Opportunities, LLC | Armata | August 2025 Credit and Security Agreement                          
Equity Investment                          
Term loan facility in aggregate amount   $ 15.0                      
Debt Instrument, annual interest rate   14.00%                      
Debt instrument maturity date   Jan. 11, 2029