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Foreign Currency Translation - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Line Items] |  |  |  |  |
Cumulative foreign currency losses | $ 398.3 |  | $ 398.3 |  | $ 425.1
Cumulative inflation rate | 100.00% |  | 100.00% |  |
Cumulative inflation period |  |  | 3 years |  |
Blue Chip Swap [Member] |  |  |  |  |
Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Line Items] |  |  |  |  |
Foreign currency exchange and other relatedloss |  |  | $ 0.7 | $ 0.9 |
AR |  |  |  |  |
Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Line Items] |  |  |  |  |
Foreign currency exchange and other relatedloss |  |  | 9.4 | 3.1 |
CNK [Member] |  |  |  |  |
Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Line Items] |  |  |  |  |
Accumulated other comprehensive income (loss) | $ 393.3 |  | 393.3 |  | 416.7
Foreign currency exchange and other relatedloss | (5.2) | $ (3.0) | (5.7) | (7.9) |
CUSA [Member] |  |  |  |  |
Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Line Items] |  |  |  |  |
Accumulated other comprehensive income (loss) | 396.1 |  | 396.1 |  | $ 419.5
Foreign currency exchange and other relatedloss | $ (5.2) | $ (3.0) | $ (5.7) | $ (7.9) |

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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 5A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482736/825-10-45-5A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14 + Details
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