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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%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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