Additional Balance Sheet Information - Components of Accrued Liabilities (Details) - USD ($) $ in Millions	Sep. 28, 2025	Dec. 29, 2024	Sep. 29, 2024
Payables and Accruals [Abstract]
Contract liabilities - current	$ 213.5	$ 236.5	$ 255.6
Accrued royalties expense	207.2	160.5	183.0
Payroll and management incentives	105.8	121.1	79.8
Advertising	97.6	58.7	70.0
Other taxes	57.5	60.9	60.5
Accrued income taxes	42.6	93.3	99.3
Interest	41.0	31.3	49.5
General vendor accruals	40.1	46.1	57.8
Freight	40.1	27.0	34.7
Lease liability - current	$ 27.5	$ 29.8	$ 32.2
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total accrued liabilities	Total accrued liabilities	Total accrued liabilities
Lag & cancellation charges	$ 26.9	$ 48.9	$ 51.2
Defined contributions plans	23.0	21.4	16.0
Severance	22.7	50.2	51.0
Professional fees	15.6	18.2	18.6
Participations and residuals	8.9	8.8	18.3
Insurance	8.2	11.3	12.3
Accrued expenses - productions	0.7	0.7	0.5
Other	53.3	35.1	42.2
Total accrued liabilities	$ 1,032.2	$ 1,059.8	$ 1,132.5