Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Content costs for past use	$ 3.3	$ 0.9	$ 5.6	$ 3.5
Content and royalty reserve	$ 17.6	$ 21.7	$ 17.6	$ 21.7