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Postretirement and Other Benefits (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Domestic Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Amortization of accumulated other comprehensive loss related to benefit plans | $ 3.4 |  | $ 3.4 |
Domestic Plan | Pension Plan [Member] |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Service cost | 0.0 | $ 0.0 | 0.0 | $ 0.0
Interest cost | 1.0 | 1.2 | 3.2 | 3.6
Expected return on plan assets | (1.5) | (1.6) | (4.4) | (4.8)
Amortizations and other | 0.7 | 0.6 | 2.4 | 2.4
Net periodic benefit cost | 0.2 | 0.2 | 1.2 | 1.2
Domestic Plan | Other Postretirement Benefits Plan [Member] |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Service cost | 0.0 | 0.0 | 0.0 | 0.0
Interest cost | 0.0 | 0.0 | 0.0 | 0.0
Expected return on plan assets | 0.0 | 0.0 | 0.0 | 0.0
Amortizations and other | 0.1 | 0.1 | 0.2 | 0.2
Net periodic benefit cost | 0.1 | 0.1 | 0.2 | 0.2
FRANCE |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Amortization of accumulated other comprehensive loss related to benefit plans | 0.8 |  | 0.8 |
FRANCE | Pension Plan [Member] |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Service cost | 0.2 | 0.3 | 0.8 | 0.8
Interest cost | 0.1 | 0.1 | 0.3 | 0.3
Expected return on plan assets | 0.0 | 0.0 | (0.1) | (0.1)
Amortizations and other | 0.2 | 0.3 | 0.6 | 0.9
Net periodic benefit cost | $ 0.5 | $ 0.7 | $ 1.6 | $ 1.9

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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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