Goodwill and Other Intangible Assets - Other Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 01, 2024	Aug. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, accumulated amortization	$ (18.9)	$ (21.8)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Total, gross carrying value	215.5	216.5
Total, accumulated amortization	(18.9)	(21.8)
Total	196.6	194.7
Customer relationships and other
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, gross carrying amount	37.6	38.6
Amortized intangible assets, accumulated amortization	(18.9)	(21.8)
Amortized intangible assets, total	18.7	16.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Total, accumulated amortization	(18.9)	(21.8)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets at fair value	9.7
Impairment of finite-lived intangible assets	9.1
Trademarks
Indefinite-Lived Intangible Assets [Line Items]
Non-amortized intangible assets	177.9	$ 177.9
Trademarks | Beyond Yoga
Indefinite-Lived Intangible Assets [Line Items]
Impairment of intangible assets, indefinite-lived (excluding goodwill)	66.0
Fair Value, Inputs, Level 3 | Trademarks | Beyond Yoga
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets at fair value	$ 135.1