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Income Taxes - Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 25, 2022 | Dec. 26, 2021 | Dec. 27, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at beginning of year | $ 50.6 | $ 67.8 | $ 36.7
Gross increases in prior period tax positions | 0.9 | 0.6 | 12.7
Gross increase from acquisition | 0.0 | 0.0 | 13.7
Gross decreases in prior period tax positions | (0.2) | (12.0) | 0.0
Gross increases in current period tax positions | 28.6 | 4.6 | 11.7
Decrease related to settlements with tax authorities | 0.0 | (2.7) | 0.0
Decreases from the expiration of statute of limitations | (2.1) | (7.7) | (7.0)
Balance at end of year | $ 77.8 | $ 50.6 | $ 67.8

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI https://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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