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Benefit Plans | 9 Months Ended
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Mar. 31, 2018
Retirement Benefits [Abstract] |
BENEFIT PLANS | BENEFIT PLANS We sponsor several defined benefit pension plans. Additionally, we provide varying levels of postretirement health care and life insurance benefits to some U.S. employees. The table below summarizes the components of net periodic pension income:
| Three Months Ended March 31, |  | Nine Months Ended March 31,
(in thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Service cost | $ | 414 |  |  | $ | 720 |  |  | $ | 1,224 |  |  | $ | 2,180 |
Interest cost | 7,716 |  |  | 7,756 |  |  | 23,051 |  |  | 23,335 |
Expected return on plan assets | (14,188 | ) |  | (14,659 | ) |  | (42,410 | ) |  | (44,088 | )
Amortization of transition obligation | 24 |  |  | 22 |  |  | 70 |  |  | 67 |
Amortization of prior service (credit) cost | (42 | ) |  | (113 | ) |  | 90 |  |  | (339 | )
Recognition of actuarial losses | 1,746 |  |  | 2,066 |  |  | 5,174 |  |  | 6,266 |
Settlement gain | — |  |  | (320 | ) |  | — |  |  | (320 | )
Net periodic pension income | $ | (4,330 | ) |  | $ | (4,528 | ) |  | $ | (12,801 | ) |  | $ | (12,899 | )
The settlement gain of $0.3 million during the three and nine months ended March 31, 2017 is the result of income from the settlement with several terminated Executive Retirement Plan participants. The table below summarizes the components of net periodic other postretirement benefit cost:
| Three Months Ended March 31, |  | Nine Months Ended March 31,
(in thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Interest cost | $ | 157 |  |  | $ | 168 |  |  | $ | 471 |  |  | $ | 505 |
Amortization of prior service credit | (6 | ) |  | (6 | ) |  | (16 | ) |  | (16 | )
Recognition of actuarial loss | 70 |  |  | 89 |  |  | 210 |  |  | 266 |
Net periodic other postretirement benefit cost | $ | 221 |  |  | $ | 251 |  |  | $ | 665 |  |  | $ | 755 |

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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