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Capital Stock - Common Stock Reserved For Future Issuance (Details) - shares | Jun. 30, 2025 | May 07, 2025
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Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Stock options and share appreciation rights (SARs) outstanding (in shares) | 800,000 |
Restricted share units and other share-based compensation - unvested (in shares) | 2,500,000 |
Shares reserved for future issuance (in shares) | 6,300,000 |
Options and SARs |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Stock options and share appreciation rights (SARs) outstanding (in shares) | 839,452 | 696,187
Starz Common Shares |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Common shares available for future issuance (in shares) | 3,000,000.0 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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