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Summary of Significant Accounting Policies (Details)
$ in Thousands, shares in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
noncontrolling_interest
shares
Feb. 11, 2020
Mar. 31, 2026
USD ($)
noncontrolling_interest
segment
Dec. 31, 2025
USD ($)
Mar. 31, 2025
USD ($)
Jan. 01, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Number of noncontrolling interests created | noncontrolling_interest 4   4          
Shareholders' equity $ 9,936,833   $ 9,936,833 $ 9,714,939 $ 9,777,657   $ 10,342,366  
Number of reportable segments | segment     1          
2356318000                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Shareholders' equity $ 2,507,091   $ 2,507,091 $ 2,356,318 $ 2,469,664   2,845,653  
Cumulative Effect, Period of Adoption, Adjustment                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Shareholders' equity             (12,000)  
Cumulative Effect, Period of Adoption, Adjustment | 2356318000                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Shareholders' equity           $ 12,000 $ (12,000)  
Vertex | Current Portion of Financial Royalty Assets | Customer Concentration Risk                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Individual licensees exceeding 10% or more of revenue (as percent)     31.00% 32.00%        
RP Holdings Class E Interests Holders | RP Holdings                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Number of equity shares issued (in shares) | shares 24.2              
Exchange Offer Transaction | Legacy Investors Partnerships                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Exchange offering, ownership percentage (as a percent)   82.00%            
Royalty Pharma Investments                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Ownership percentage (as a percent)               82.00%
Old RPI | Legacy Investors Partnerships                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Noncontrolling interest (as percent) 18.00%   18.00%          
Old RPI | Exchange Offer Transaction                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Ownership percentage (as a percent)   82.00%            
RPCT                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Ownership percentage (as a percent)   66.00%