Employee Benefits - Schedule of Assumptions (Details)		12 Months Ended
	Jan. 01, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Plans
Benefit obligation:
Discount rate (as a percent)		5.74%	5.27%	5.63%
Net periodic cost:
Return on assets (as a percent)		6.00%	6.00%	4.00%
Retirement Plans | U.S.
Net periodic cost:
Discount rate (as a percent)		5.27%	5.63%	3.05%
Return on assets (as a percent)		6.00%
Retirement Plans | U.S. | Subsequent event
Net periodic cost:
Return on assets (as a percent)	6.25%
Retirement Plans | U.K.
Net periodic cost:
Discount rate (as a percent)		4.50%	4.76%	1.87%
Return on assets (as a percent)		5.50%
Retirement Plans | U.K. | Subsequent event
Net periodic cost:
Return on assets (as a percent)	5.40%
Postretirement Plans
Benefit obligation:
Discount rate (as a percent)		5.57%	5.18%	5.52%
Postretirement Plans | U.S.
Net periodic cost:
Discount rate (as a percent)		5.18%	5.52%	2.72%