Summary of Revenues Disaggregated Based on Major Type of Good or Service and by Reportable Operating Segment (Detail) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
		Dec. 31, 2020	[1]	Sep. 30, 2020	[1]	Jun. 30, 2020	[1]	Mar. 31, 2020	[1]	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenues		$ 98,242		$ 35,478		$ 8,974		$ 543,616		$ 788,803	$ 821,817	$ 957,756	$ 714,723	$ 686,310	[1]	$ 3,283,099	$ 3,221,735
Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenues														356,508		1,805,321	1,834,173
Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenues														231,046		1,161,083	1,108,793
Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenues														62,531		164,727	139,860
Other Revenues
Disaggregation of Revenue [Line Items]
Total revenues														36,225		151,968	138,909
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenues	[2]													556,909		2,580,903	2,538,957
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenues	[2]													291,636		1,431,790	1,461,151
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenues	[2]													189,561		936,241	892,391
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenues	[2]													46,199		128,839	78,591
U.S. Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenues	[2]													29,513		84,033	106,824
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenues														129,401		702,196	682,778
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenues														64,872		373,531	373,022
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenues														41,485		224,842	216,402
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenues														16,332		35,888	61,269
International Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenues														$ 6,712		$ 67,935	$ 32,085

[1] Quarterly results during the year ended December 31, 2020 were impacted by the COVID-19 pandemic (see Note 3) as well as impairment recorded (see Notes 1 and 11).

[2] U.S. segment revenues exclude intercompany transactions with the international operating segment.  See Note 21 for additional information on intercompany eliminations.