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Retirement Plans | 3 Months Ended
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Mar. 31, 2020
Retirement Benefits [Abstract] |
Retirement Plans | Retirement Plans Net periodic pension expense for our defined benefit pension plans includes the following components:
|  |  | Three Months Ended March 31,
(in thousands) | Location of Component |  | 2020 |  | 2019
Service cost | Cost of revenue |  | $ | 4,384 |  |  | $ | 3,981 |
Interest cost | Corp G&A |  | 2,394 |  |  | 4,975 |
Expected return on assets | Corp G&A |  | (6,356 | ) |  | (8,279 | )
Amortization of prior service credit | Corp G&A |  | (218 | ) |  | (225 | )
Recognized net actuarial loss | Corp G&A |  | 1,402 |  |  | 2,619 |
Net periodic pension expense |  |  | $ | 1,606 |  |  | $ | 3,071 |
We currently expect to contribute up to $15 million into our defined benefit pension plans during 2020, which is expected to be in excess of the minimum funding required. During the three months ended March 31, 2020, we made contributions of approximately $7 million.

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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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