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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions | Jun. 26, 2022 | Dec. 26, 2021
--- | --- | ---
Goodwill [Line Items] |  |
Gross value | $ 805.2 | $ 747.2
Less accumulated impairment | 253.3 | 253.3
Net | 551.9 | 493.9
KGS |  |
Goodwill [Line Items] |  |
Gross value | 677.3 | 619.3
Less accumulated impairment | 239.5 | 239.5
Net | 437.8 | 379.8
US |  |
Goodwill [Line Items] |  |
Gross value | 127.9 | 127.9
Less accumulated impairment | 13.8 | 13.8
Net | $ 114.1 | $ 114.1

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