Quarterly report pursuant to Section 13 or 15(d)

Summary of Impairment Charges (Detail)

v3.22.2.2
Summary of Impairment Charges (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Impaired Long-Lived Assets Held and Used [Line Items]        
Total Impairment $ 15.2 $ 7.5 $ 107.5 $ 7.5
U.S. Operating Segment        
Impaired Long-Lived Assets Held and Used [Line Items]        
Theatre properties 1.1 4.8 3.6 4.8
Theatre operating lease right-of-use assets 2.7 2.6 4.7 2.6
Investment in NCM [1] 11.2 0.0 98.0 0.0
Total Impairment 15.0 7.4 106.3 7.4
International        
Impaired Long-Lived Assets Held and Used [Line Items]        
Theatre properties 0.1 0.1 0.8 0.1
Theatre operating lease right-of-use assets 0.1 0.0 0.4 0.0
International total $ 0.2 $ 0.1 $ 1.2 $ 0.1
[1] See discussion at Impairment of NCM Investment in Note 8.