Investments in and Advances to Unconsolidated Companies (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024	Dec. 27, 2024
Investments in and Advances to Affiliates [Abstract]
Investments in and advances to unconsolidated companies	$ 54.1		$ 54.1		$ 39.9
Equity Method Investments	45.6		45.6		$ 32.3
Unfunded commitments	2.6		2.6
Income (loss) from equity method investments	7.8	$ 3.6	7.8	$ 3.4
Distributions received from equity method investment	$ 0.3		$ 1.1
Proceeds from Equity Method Investment, Distribution, Return of Capital		$ 0.0		$ 0.0

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of investment in equity method investee and investment in and advance to affiliate.

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No definition available.

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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