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Defined Benefit Pension Plans | 6 Months Ended
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Jun. 30, 2020
Retirement Benefits [Abstract] |
Compensation and Employee Benefit Plans | DEFINED BENEFIT PENSION PLANS The following table summarizes our net periodic pension cost for our defined benefit pension and postretirement plans during the three and six months ended June 30, 2020, and 2019:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Service cost | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |
Other components of net periodic pension cost 1: |  |  |  |  |  |  |
Interest cost | 3 |  |  | 3 |  |  | 5 |  |  | 6 |
Expected return on plan assets | (4 | ) |  | (4 | ) |  | (7 | ) |  | (7 | )
Amortization of prior service cost | — |  |  | — |  |  | — |  |  | — |
Amortization of net loss | 1 |  |  | 1 |  |  | 3 |  |  | 2 |
Net periodic pension cost | $ | 1 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 3 |
1 Other components of net periodic pension cost are included in other non-operating items on our Condensed Consolidated Statements of Income.

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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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