Investments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Investments [Abstract]
Realized (losses) gains on trading securities	$ 1.0	$ 0.8	$ 0.7	$ 2.2