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Pension and Postretirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2017
Retirement Benefits [Abstract] |
Components of Net Periodic Benefit Expense | Net periodic postretirement benefit expense for the three and nine months ended September 30, 2017 and 2016 is presented below:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
Service cost |  | $ | 0.2 |  |  | $ | 0.1 |  |  | $ | 0.4 |  |  | $ | 0.3 |
Interest cost |  | 1.4 |  |  | 1.6 |  |  | 4.4 |  |  | 4.8 |
Expected return on assets |  | (0.1 | ) |  | (0.1 | ) |  | (0.3 | ) |  | (0.3 | )
Recognized net actuarial loss |  | 0.3 |  |  | 0.3 |  |  | 0.9 |  |  | 0.9 |
Amortization of prior service benefit |  | (0.1 | ) |  | — |  |  | (0.3 | ) |  | — |
Net periodic postretirement benefit expense |  | $ | 1.7 |  |  | $ | 1.9 |  |  | $ | 5.1 |  |  | $ | 5.7 |
Net periodic pension expense for the three and nine months ended September 30, 2017 and 2016 is presented below:
|  | Three Months Ended September 30, 2017 |  | Three Months Ended September 30, 2016
|  | Total |  | U.S. Plans |  | International Plans |  | Total |  | U.S. Plans |  | International Plans
Service cost |  | $ | 1.0 |  |  | $ | — |  |  | $ | 1.0 |  |  | $ | 1.8 |  |  | $ | — |  |  | $ | 1.8 |
Interest cost |  | 71.4 |  |  | 52.8 |  |  | 18.6 |  |  | 79.3 |  |  | 57.7 |  |  | 21.6 |
Expected return on plan assets |  | (91.2 | ) |  | (58.8 | ) |  | (32.4 | ) |  | (97.2 | ) |  | (63.2 | ) |  | (34.0 | )
Amortization of prior service benefit |  | (1.1 | ) |  | (0.6 | ) |  | (0.5 | ) |  | (1.4 | ) |  | (0.6 | ) |  | (0.8 | )
Recognized net actuarial loss |  | 43.5 |  |  | 31.6 |  |  | 11.9 |  |  | 38.7 |  |  | 29.0 |  |  | 9.7 |
Net periodic pension expense (benefit) |  | $ | 23.6 |  |  | $ | 25.0 |  |  | $ | (1.4 | ) |  | $ | 21.2 |  |  | $ | 22.9 |  |  | $ | (1.7 | )
|  | Nine Months Ended September 30, 2017 |  | Nine Months Ended September 30, 2016
|  | Total |  | U.S. Plans |  | International Plans |  | Total |  | U.S. Plans |  | International Plans
Service cost |  | $ | 4.2 |  |  | $ | — |  |  | $ | 4.2 |  |  | $ | 5.7 |  |  | $ | — |  |  | $ | 5.7 |
Interest cost |  | 212.2 |  |  | 158.5 |  |  | 53.7 |  |  | 241.2 |  |  | 173.4 |  |  | 67.8 |
Expected return on plan assets |  | (270.7 | ) |  | (176.4 | ) |  | (94.3 | ) |  | (296.6 | ) |  | (189.8 | ) |  | (106.8 | )
Amortization of prior service benefit |  | (3.6 | ) |  | (1.9 | ) |  | (1.7 | ) |  | (4.2 | ) |  | (1.9 | ) |  | (2.3 | )
Recognized net actuarial loss |  | 132.5 |  |  | 94.8 |  |  | 37.7 |  |  | 116.9 |  |  | 87.0 |  |  | 29.9 |
Curtailment gain |  | (5.2 | ) |  | — |  |  | (5.2 | ) |  | — |  |  | — |  |  | — |
Net periodic pension expense (benefit) |  | $ | 69.4 |  |  | $ | 75.0 |  |  | $ | (5.6 | ) |  | $ | 63.0 |  |  | $ | 68.7 |  |  | $ | (5.7 | )

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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