Fair Value Measurements and Financial Instruments - Summary of Estimated Fair Values Based on Level 3 Inputs (Details) - Level 3 - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Current	$ 660,482	$ 738,438
Non-current	18,546,190	19,077,706
Total financial royalty assets	19,206,672	19,816,144
Carrying Value, Net
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Current	660,482	738,438
Non-current	13,465,407	14,088,655
Total financial royalty assets	$ 14,125,889	$ 14,827,093