Share-Based Compensation - Expense (Benefit) Recognized (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share based compensation (benefit) expense recognized in connection with the STAP
Share-based compensation expense (benefit) before taxes	$ 37.8	$ 49.7	$ 69.6	$ 75.3
STAP awards
Share based compensation (benefit) expense recognized in connection with the STAP
Share-based compensation expense (benefit) before taxes	0.0	21.9	(0.8)	25.8
Related income tax (benefit) expense	0.0	(2.9)	0.2	(3.7)
Share-based compensation expense (benefit), net of taxes	0.0	19.0	(0.6)	22.1
Cash payments on awards exercised during the period			10.2	31.9
Cost of sales \| STAP awards
Share based compensation (benefit) expense recognized in connection with the STAP
Share-based compensation expense (benefit) before taxes	0.0	0.8	(0.1)	1.0
Research and development \| STAP awards
Share based compensation (benefit) expense recognized in connection with the STAP
Share-based compensation expense (benefit) before taxes	0.0	2.5	(0.2)	3.0
Selling, general, and administrative \| STAP awards
Share based compensation (benefit) expense recognized in connection with the STAP
Share-based compensation expense (benefit) before taxes	$ 0.0	$ 18.6	$ (0.5)	$ 21.8

UNITED THERAPEUTICS Corp 10-Q