Additional Balance Sheet Information - Components of Accrued liabilities (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Sep. 29, 2024	Jun. 30, 2024	Jul. 02, 2023	Jun. 30, 2024	Jul. 02, 2023	Dec. 31, 2023
Other Assets [Line Items]
Royalties		$ 319.7	$ 170.1	$ 319.7	$ 170.1	$ 286.8
Deferred revenue		83.2	117.9	83.2	117.9	101.6
Lag & cancellation charges		76.3	82.6	76.3	82.6	118.9
Dividends		0.0	97.1	0.0	97.1	97.2
Severance		63.0	70.7	63.0	70.7	83.7
Accrued income taxes		108.6	50.8	108.6	50.8	61.6
Other taxes		48.8	66.7	48.8	66.7	68.7
Interest		33.7	32.6	33.7	32.6	29.9
General vendor accruals		43.8	52.3	43.8	52.3	51.9
Participations and residuals		17.8	287.0	17.8	287.0	34.0
Advertising		25.8	51.7	25.8	51.7	45.0
Lease liability - current		$ 32.7	$ 35.2	$ 32.7	$ 35.2	$ 30.5
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Total accrued liabilities	Total accrued liabilities	Total accrued liabilities	Total accrued liabilities	Total accrued liabilities
Payroll and management incentives		$ 51.8	$ 31.2	$ 51.8	$ 31.2	$ 85.6
Defined contribution plans		19.2	25.1	19.2	25.1	29.7
Freight		25.7	29.6	25.7	29.6	22.9
Insurance		14.3	12.1	14.3	12.1	13.3
Professional fees		10.1	13.0	10.1	13.0	12.4
Accrued expenses - IIP & IIC		0.5	57.3	0.5	57.3	0.7
Other		57.6	86.4	57.6	86.4	41.4
Total accrued liabilities		$ 1,032.6	$ 1,369.4	$ 1,032.6	$ 1,369.4	$ 1,215.8
Cash dividends declared per common share (in dollars per share)		$ 0.70	$ 0.70	$ 1.40	$ 1.40
Forecast
Other Assets [Line Items]
Cash dividends declared per common share (in dollars per share)	$ 0.70