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Pension and Other Postretirement Benefit Plans | 3 Months Ended
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Mar. 31, 2020
Retirement Benefits [Abstract] |
Pension and Other Postretirement Benefit Plans | PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS The following table summarizes the components of net periodic pension cost and the cost of other postretirement benefits for the periods presented:
|  | Three Months Ended March 31,
|  | United States Pension Benefits |  | Foreign Pension Benefits |  | Other Postretirement Benefits
Millions of dollars |  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Service cost |  | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 2 |
Interest cost |  | 25 |  |  | 31 |  |  | 4 |  |  | 6 |  |  | 3 |  |  | 4 |
Expected return on plan assets |  | (41 | ) |  | (44 | ) |  | (8 | ) |  | (7 | ) |  | — |  |  | — |
Amortization: |  |  |  |  |  |  |  |  |  |  |  |
Actuarial loss |  | 15 |  |  | 12 |  |  | 3 |  |  | 2 |  |  | — |  |  | — |
Prior service credit |  | — |  |  | (1 | ) |  | — |  |  | — |  |  | (2 | ) |  | (2 | )
Settlement and curtailment (gain) loss |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | (7 | )
Net periodic benefit cost (credit) |  | $ | — |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | (3 | )
The following table summarizes the net periodic cost recognized in operating profit and interest and sundry (income) expense for the periods presented:
|  | Three Months Ended March 31,
|  | United States Pension Benefits |  | Foreign Pension Benefits |  | Other Postretirement Benefits
Millions of dollars |  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Operating profit (loss) |  | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 2 |
Interest and sundry (income) expense |  | (1 | ) |  | (2 | ) |  | (1 | ) |  | 2 |  |  | 1 |  |  | (5 | )
Net periodic benefit cost |  | $ | — |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | (3 | )
401(k) Defined Contribution Plan During March 2020, we announced that the company matching contributions for our 401(k) defined contribution plan, equal to up to 7% of participants' eligible compensation, covering substantially all U.S. employees will be contributed in company stock starting from May 2020.

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- 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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