Retirement Benefits - Narrative (Details) $ in Millions	1 Months Ended	12 Months Ended						120 Months Ended
	Aug. 31, 2023 USD ($)	Jan. 03, 2027 USD ($)	Dec. 28, 2025 USD ($) uSRetireeAndBeneficiary employee	Dec. 29, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023	Jan. 02, 2022	Jan. 01, 2023 program buyout	Oct. 17, 2023 uSRetireeAndBeneficiary
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of annuity buyouts of retired participants | buyout								5
Number of voluntary cash out programs | program								2
Transfer of defined benefit pension plan, percentage					85.00%
Number of U.S. retirees and beneficiaries transferred | uSRetireeAndBeneficiary									8,200
Number of U.S. retirees and beneficiaries | uSRetireeAndBeneficiary			2,000
Defined contribution plan, cost			$ 46.7	$ 42.5	$ 38.8
Recognized actuarial gain (loss)			(18.6)	(14.1)	(26.8)
Retirement benefit settlement loss			0.0	0.0	41.7
Projected retirement benefit expense in next 12 months			23.0
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan contributions	$ 222.0		5.1	3.3
Recognized actuarial gain (loss)			(18.6)	(14.1)	(26.8)
Retirement benefit settlement loss			0.0	0.0	$ 41.7
Projected retirement benefit expense in next 12 months			9.0
Accumulated benefit obligation			$ 310.3	$ 292.3
Expected long-term rate of return on assets			5.80%	5.80%
Actual return on plan assets			5.90%	(2.70%)	2.00%	(14.50%)	12.40%
Pension Benefits | Private Equity Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unfunded commitments			$ 29.0
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan contributions			0.0	$ 0.0
Defined contribution plan, cost			1.0	1.0	$ 1.0
Recognized actuarial gain (loss)			0.0	0.0	0.0
Retirement benefit settlement loss			0.0	$ 0.0	$ 0.0
Projected retirement benefit expense in next 12 months			$ 14.0
Defined benefit plan, health care cost			8.50%
Defined benefit plan, ultimate health care cost			4.00%
Expected long-term rate of return on assets			0.00%	0.00%	0.00%
Nonqualified plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, expected future employer contributions, next fiscal year			$ 5.0
United States | Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, number of employees accruing benefit service | employee			700
Percent reduction in defined benefit plan participation						60.00%		60.00%
Pension plan contributions			$ 0.0	$ 0.0	$ 272.0
United States | Pension Benefits | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan contributions		$ 4.0