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Schedule of Supplemental Information to Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Schedule Of Cash Flow Supplemental [Line Items] |  |  |
Cash paid for interest by Holdings | [1] | $ 132.1 | $ 129.2
Cash paid for interest by CUSA |  | 111.4 | 108.5
Cash paid for income taxes, net |  | 26.5 | 17.1
Noncash investing and financing activities: |  |  |
Interest expense - NCM (see Note 8) |  | (16.0) | (16.5)
Change in accounts payable and accrued expenses for the acquisition of theatre properties and equipment | [2] | 19.9 | (3.5)
Theatre and other assets acquired under finance leases |  | 1.3 | 31.3
Investment in NCMI - receipt of common units in NCM (see Note 8) |  | 0.0 | 0.5
Dividends accrued on unvested performance and restricted stock unit awards |  | $ 0.7 | $ 0.0
[1] | Includes the cash interest paid by CUSA.
[2] | Additions to theater properties and equipment included in accounts payable as of September 30, 2025 and December 31, 2024 were $26.8 and $6.9, respectively.

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