Defined Benefit Pension Plans and Other Post-Employment Benefit Plans The following table shows the components of our net periodic benefit cost (income) for our defined benefit pension plans for the three and six months ended June 30, 2018 and 2017: | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, 2018 | | Three Months Ended
June 30, 2017 | (In millions) | | U.S. | | International | | Total | | U.S. | | International | | Total | Components of net periodic benefit cost (income): | | | | | | | | | | | | | Service cost | | $ | 0.1 |
| | $ | 1.1 |
| | $ | 1.2 |
| | $ | 0.1 |
| | $ | 1.7 |
| | $ | 1.8 |
| Interest cost | | 1.6 |
| | 3.9 |
| | 5.5 |
| | 1.7 |
| | 4.0 |
| | 5.7 |
| Expected return on plan assets | | (2.2 | ) | | (7.5 | ) | | (9.7 | ) | | (2.4 | ) | | (7.6 | ) | | (10.0 | ) | Amortization of net actuarial loss | | 0.2 |
| | 0.6 |
| | 0.8 |
| | 0.2 |
| | 1.4 |
| | 1.6 |
| Net periodic income | | (0.3 | ) | | (1.9 | ) | | (2.2 | ) | | (0.4 | ) | | (0.5 | ) | | (0.9 | ) | Cost of settlement/curtailment | | — |
| | 0.1 |
| | 0.1 |
| | 0.8 |
| | — |
| | 0.8 |
| Total (income) benefit cost | | $ | (0.3 | ) | | $ | (1.8 | ) | | $ | (2.1 | ) | | $ | 0.4 |
| | $ | (0.5 | ) | | $ | (0.1 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended
June 30, 2018 | | Six Months Ended
June 30, 2017 | (In millions) | | U.S. | | International | | Total | | U.S. | | International | | Total | Components of net periodic benefit cost (income): | | | | | | | | | | | | | Service cost | | $ | 0.1 |
| | $ | 2.1 |
| | $ | 2.2 |
| | $ | 0.1 |
| | $ | 3.4 |
| | $ | 3.5 |
| Interest cost | | 3.2 |
| | 7.8 |
| | 11.0 |
| | 3.5 |
| | 8.0 |
| | 11.5 |
| Expected return on plan assets | | (4.4 | ) | | (14.9 | ) | | (19.3 | ) | | (4.9 | ) | | (15.2 | ) | | (20.1 | ) | Amortization of net actuarial loss | | 0.5 |
| | 1.2 |
| | 1.7 |
| | 0.4 |
| | 2.8 |
| | 3.2 |
| Net periodic income | | (0.6 | ) | | (3.8 | ) | | (4.4 | ) | | (0.9 | ) | | (1.0 | ) | | (1.9 | ) | Cost of settlement/curtailment | | — |
| | 0.1 |
| | 0.1 |
| | 0.8 |
| | 0.5 |
| | 1.3 |
| Total income | | $ | (0.6 | ) | | $ | (3.7 | ) | | $ | (4.3 | ) | | $ | (0.1 | ) | | $ | (0.5 | ) | | $ | (0.6 | ) |
The following table shows the components of our net periodic benefit cost (income) for our other post-retirement employee benefit plans for the three and six months ended June 30, 2018 and 2017: | | | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, | | Six Months Ended
June 30, | (In millions) | | 2018 | | 2017 | | 2018 | | 2017 | Components of net periodic benefit cost: | | | | | | | | | Service costs | | $ | — |
| | $ | 0.1 |
| | $ | — |
| | $ | 0.1 |
| Interest cost | | 0.4 |
| | 0.4 |
| | 0.7 |
| | 0.9 |
| Amortization of net prior service cost | | (0.1 | ) | | (0.3 | ) | | (0.2 | ) | | (0.8 | ) | Amortization of net actuarial loss | | (0.1 | ) | | (0.1 | ) | | (0.1 | ) | | (0.1 | ) | Net periodic benefit cost | | $ | 0.2 |
| | $ | 0.1 |
| | $ | 0.4 |
| | $ | 0.1 |
|
In 2017, the net periodic (income) costs related to Diversey plans were excluded from the tables above. The amounts of the costs charged to discontinued operations were as follows: | | | | | | | | | | (In millions) | | Three Months Ended June 30, 2017 | | Six Months Ended June 30, 2017 | Defined benefit pension plans | | $ | (0.2 | ) | | $ | (0.4 | ) | Other employee benefit plans | | — |
| | — |
| Total income included in discontinued operations | | $ | (0.2 | ) | | $ | (0.4 | ) |
|