Supplemental Cash Flow Information - Schedule of Supplemental Information to Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended | |
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Sep. 30, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
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| Schedule Of Cash Flow Supplemental [Line Items] | |||
| Additions to theatre properties and equipment included in accounts payable | $ 21.6 | $ 21.4 | |
| Four Point Five Zero Convertible Senior Notes [Member] | |||
| Schedule Of Cash Flow Supplemental [Line Items] | |||
| Debt Instrument, Interest Rate, Stated Percentage | 4.50% | 4.50% | |
| Debt Instrument, Face Amount | $ 460.0 | ||
| Debt Instrument, Maturity Date | Aug. 15, 2025 |
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- Definition Schedule of Cash Flow, Supplemental [Line Items] No definition available.
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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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