Supplemental Information to Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for income taxes, net		$ 7.2	$ 1.0
Noncash investing and financing activities:
Change in accounts payable and accrued expenses for the acquisition of theatre properties and equipment	[1]	1.5	0.4
Investment in NCMI/NCM - receipt of common units (see Note 8)		0.0	1.3
NCM
Noncash investing and financing activities:
Interest expense - NCM (see Note 8)		(11.4)	(11.7)
Cinemark Partners Second [Member]
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for interest by CUSA		66.6	60.6
Cinemark Holdings Inc [Member]
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for interest by Holdings	[2]	$ 77.0	$ 71.0

[1] Additions to theatre properties and equipment included in accounts payable as of June 30, 2023 and December 31, 2022 were $13.5 and $12.0, respectively.

[2] Includes the cash interest paid by CUSA.