Impairment of Long-Lived Assets - Summary of Long-Lived Asset Impairment Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Impaired Long-Lived Assets Held and Used [Line Items]
Total Impairment	$ 1.6	$ 0.0	$ 1.6	$ 0.0
U.S. Operating Segment
Impaired Long-Lived Assets Held and Used [Line Items]
Theater properties	0.0		0.0
Theater operating lease right-of-use assets	0.0		0.0
Total Impairment	0.0		0.0
International Operating Segment
Impaired Long-Lived Assets Held and Used [Line Items]
Theater properties	0.4		0.4
Theater operating lease right-of-use assets	1.2		1.2
Total Impairment	$ 1.6		$ 1.6