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Shareholders' Deficit - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 25, 2024 | Dec. 27, 2023 | Dec. 25, 2024 | Dec. 27, 2023 | Dec. 25, 2019
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Retirement of shares (in shares) | 2.0 | 12.8 |  |  |
Weighted average share price (in dollars per share) | $ 8.78 | $ 11.02 |  |  |
Remaining number of treasury shares (in shares) |  |  | 0.0 | 0.7 |
Share Repurchase Program 2019 |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Share repurchase, authorized amount |  |  |  |  | $ 250

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