Reconciliation of Net Income to Adjusted EBITDA (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Segment Reporting Information [Line Items]
Net income (loss)		$ (422,215)	$ (617,948)		$ 193,848
Add (deduct):
Income taxes		(16,802)	(309,376)		79,912
Interest expense	[1]	(149,702)	(129,871)		(99,941)
Loss on debt amendments and refinancing		6,527
Other (income) expense	[2]	43,532	62,369		(22,441)
Distributions and other cash distributions from equity investees		156	25,430		53,366
Depreciation and amortization		265,363	259,776		261,155
Impairment of long-lived and other assets		20,845	152,706		57,001
(Gain) loss on disposal of assets and other		8,025	(8,923)		12,008
Non-cash rent expense		(3,451)	2,357		(4,360)
Share based awards compensation expense		29,271	19,404		14,615
Adjusted EBITDA	[3]	79,952	(276,880)		745,045
Non-cash distributions from DCIP			12,915		0
Restructuring costs		(1,001)	20,369		0
Digital Cinema Implementation Partners
Add (deduct):
Distributions and other cash distributions from equity investees	[4]	13,139	10,383	[5]	23,696	[5]
Other Investees
Add (deduct):
Distributions and other cash distributions from equity investees	[6]	156	15,047		$ 29,670
Other Equity Investees
Add (deduct):
Non-cash distributions from DCIP	[7]	$ 0	$ (12,915)

[1] Includes amortization of debt issuance costs

[2] Includes interest income, foreign currency exchange loss, interest expense – NCM and equity in income (loss) of affiliates and excludes distributions from NCM.

[3] Distributions from equity investees are reported entirely within the U.S. operating segment

[4] Recorded as a reduction in the Company's investment in DCIP for the years ended December 31, 2019 and 2020. Recorded in cash distributions from DCIP on the consolidated statements of income (loss) for the year ended December 31, 2021. See discussion at Distribution of Projectors from DCIP above.

[5] See discussion of cash distributions from DCIP, which were recorded as a reduction of the Company’s investment in DCIP for the years ended December 31, 2019 and 2020, in Note 9. These distributions are reported entirely within the U.S. operating segment.

[6] Reflects cash distributions received from equity investees, other than those from DCIP noted above, that were recorded as a reduction of the respective investment balances (see Notes 8 and 9). These distributions are reported entirely within the U.S. operating segment.

[7] Reflects non-cash distribution of projectors from DCIP (see Note 9). These distributions are reported entirely within the U.S. operating segment