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Net Periodic Benefit Cost - Defined Benefit Plans | 9 Months Ended
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Sep. 28, 2019
Notes To Financial Statements [Abstract] |
Net Periodic Benefit Cost - Defined Benefit Plans | NET PERIODIC BENEFIT COST — DEFINED BENEFIT PLANS Following are the components of net periodic pension expense (benefit) for the three and nine months ended September 28, 2019 and September 29, 2018:
| Third Quarter
| Pension Benefits |  | Other Benefits
| U.S. Plans |  | Non-U.S. Plans |  | All Plans
(Millions of Dollars) | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost | $ | 3.1 |  |  | $ | 1.8 |  |  | $ | 3.5 |  |  | $ | 3.8 |  |  | $ | 0.1 |  |  | $ | 0.1 |
Interest cost | 11.8 |  |  | 10.7 |  |  | 7.4 |  |  | 7.0 |  |  | 0.4 |  |  | 0.4 |
Expected return on plan assets | (15.4 | ) |  | (17.2 | ) |  | (11.1 | ) |  | (11.4 | ) |  | — |  |  | — |
Amortization of prior service cost (credit) | 0.2 |  |  | 0.3 |  |  | (0.1 | ) |  | (0.4 | ) |  | (0.3 | ) |  | (0.3 | )
Amortization of net loss (gain) | 2.0 |  |  | 2.0 |  |  | 2.1 |  |  | 1.8 |  |  | (0.1 | ) |  | — |
Settlement / curtailment loss (gain) | — |  |  | — |  |  | (0.2 | ) |  | 0.1 |  |  | — |  |  | — |
Net periodic pension expense (benefit) | $ | 1.7 |  |  | $ | (2.4 | ) |  | $ | 1.6 |  |  | $ | 0.9 |  |  | $ | 0.1 |  |  | $ | 0.2 |
| Year-to-Date
| Pension Benefits |  | Other Benefits
| U.S. Plans |  | Non-U.S. Plans |  | All Plans
(Millions of Dollars) | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost | $ | 9.3 |  |  | $ | 5.6 |  |  | $ | 10.9 |  |  | $ | 11.5 |  |  | $ | 0.2 |  |  | $ | 0.4 |
Interest cost | 35.3 |  |  | 32.1 |  |  | 22.7 |  |  | 21.7 |  |  | 1.2 |  |  | 1.2 |
Expected return on plan assets | (46.3 | ) |  | (51.5 | ) |  | (34.1 | ) |  | (35.4 | ) |  | — |  |  | — |
Amortization of prior service cost (credit) | 0.7 |  |  | 0.8 |  |  | (0.5 | ) |  | (1.0 | ) |  | (1.0 | ) |  | (1.0 | )
Amortization of net loss (gain) | 6.0 |  |  | 5.9 |  |  | 6.5 |  |  | 6.5 |  |  | (0.2 | ) |  | — |
Settlement / curtailment loss | — |  |  | — |  |  | — |  |  | 0.3 |  |  | — |  |  | — |
Net periodic pension expense (benefit) | $ | 5.0 |  |  | $ | (7.1 | ) |  | $ | 5.5 |  |  | $ | 3.6 |  |  | $ | 0.2 |  |  | $ | 0.6 |
The components of net periodic benefit cost other than the service cost component are included in Other, net in the Consolidated Statements of Operations and Comprehensive Income.

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- Definition Notes to Financial Statements [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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