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Pension and Other Postretirement Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2018
Pension |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of net periodic benefit (credit) cost | The components of the Company’s net periodic pension benefit (credit) cost are shown below (in millions):
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  | July 1, 2017 |  | June 30, 2018 |  | July 1, 2017
| U.S. |  | Foreign |  | U.S. |  | Foreign |  | U.S. |  | Foreign |  | U.S. |  | Foreign
Service cost | $ | — |  |  | $ | 1.8 |  |  | $ | 0.1 |  |  | $ | 1.8 |  |  | $ | — |  |  | $ | 3.5 |  |  | $ | 0.1 |  |  | $ | 3.5 |
Interest cost | 4.9 |  |  | 3.7 |  |  | 5.5 |  |  | 3.4 |  |  | 9.9 |  |  | 7.5 |  |  | 10.9 |  |  | 7.2 |
Expected return on plan assets | (6.9 | ) |  | (5.8 | ) |  | (6.1 | ) |  | (5.5 | ) |  | (13.8 | ) |  | (11.7 | ) |  | (12.0 | ) |  | (11.1 | )
Amortization of actuarial loss | 0.5 |  |  | 1.5 |  |  | 0.7 |  |  | 1.3 |  |  | 1.0 |  |  | 3.1 |  |  | 1.3 |  |  | 2.5 |
Settlement loss | — |  |  | — |  |  | — |  |  | — |  |  | 0.2 |  |  | — |  |  | 0.2 |  |  | 0.8 |
Net periodic benefit (credit) cost | $ | (1.5 | ) |  | $ | 1.2 |  |  | $ | 0.2 |  |  | $ | 1.0 |  |  | $ | (2.7 | ) |  | $ | 2.4 |  |  | $ | 0.5 |  |  | $ | 2.9 |
Other postretirement |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of net periodic benefit (credit) cost | The components of the Company’s net periodic other postretirement benefit (credit) cost are shown below (in millions):
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  | July 1, 2017 |  | June 30, 2018 |  | July 1, 2017
| U.S. |  | Foreign |  | U.S. |  | Foreign |  | U.S. |  | Foreign |  | U.S. |  | Foreign
Service cost | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | — |  |  | $ | 0.2 |  |  | $ | 0.1 |  |  | $ | 0.3 |
Interest cost | 0.5 |  |  | 0.3 |  |  | 0.6 |  |  | 0.4 |  |  | 1.0 |  |  | 0.7 |  |  | 1.2 |  |  | 0.8 |
Amortization of actuarial (gain) loss | (0.5 | ) |  | 0.1 |  |  | (0.7 | ) |  | — |  |  | (1.1 | ) |  | 0.1 |  |  | (1.3 | ) |  | 0.1 |
Amortization of prior service credit | (0.1 | ) |  | (0.1 | ) |  | — |  |  | (0.1 | ) |  | (0.1 | ) |  | (0.2 | ) |  | — |  |  | (0.2 | )
Special termination benefits | — |  |  | — |  |  | — |  |  | 0.1 |  |  | — |  |  | — |  |  | — |  |  | 0.1 |
Net periodic benefit (credit) cost | $ | (0.1 | ) |  | $ | 0.4 |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | (0.2 | ) |  | $ | 0.8 |  |  | $ | — |  |  | $ | 1.1 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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