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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2026	Sep. 28, 2025	Mar. 30, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on disposal group	$ (27,971)		$ 0
Loss on impairment of goodwill and other intangibles	38,640	$ 1,520,000	$ 0
Six Flags
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on impairment of goodwill and other intangibles		$ 1,340,000
Disposal Group, Held-for-Sale, Not Discontinued Operations | Seven Parks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on disposal group	$ 28,000

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- Definition

Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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