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Employee Benefit Plans - Reconciliation of the Changes in Benefit Obligation, the Changes in Plan Assets, and the Funded Status (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | $ 150.4 |  |
Fair value of plan assets, end of year | 161.3 | $ 150.4 |
U.S. Pension Plans |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | 155.6 | 218.5 |
Distribution of MFS | 0.0 | (62.4) |
Service cost | 0.0 | 0.0 | $ 0.0
Interest cost | 5.3 | 6.8 | 9.4
Participant contributions | 0.0 | 0.0 |
Medicare subsidies received | 0.0 | 0.0 |
Plan amendments | 0.0 | 0.0 |
Net transfer out | 0.0 | 0.0 |
Actuarial (gain) loss | 10.0 | 0.9 |
Currency translation adjustment | 0.0 | 0.0 |
Benefits paid | (8.6) | (8.2) |
Benefit obligation, end of year | 162.3 | 155.6 | 218.5
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 108.6 | 143.9 |
Distribution of MFS | 0.0 | (34.1) |
Actual return on plan assets | 11.5 | 6.4 |
Employer contributions | 4.7 | 0.6 |
Participant contributions | 0.0 | 0.0 |
Medicare subsidies received | 0.0 | 0.0 |
Currency translation adjustment | 0.0 | 0.0 |
Net transfer out | 0.0 | 0.0 |
Benefits paid | (8.6) | (8.2) |
Fair value of plan assets, end of year | 116.2 | 108.6 | $ 143.9
Funded status | (46.1) | (47.0) |
Amounts recognized in the Consolidated Balance sheet at December 31 |  |  |
Pension asset | 0.0 | 0.0 |
Pension obligation | (46.1) | (47.0) |
Postretirement medical and other benefit obligations | 0.0 | 0.0 |
Net amount recognized | $ (46.1) | $ (47.0) |
Weighted-Average Assumptions |  |  |
Discount rate | 3.60% | 4.20% |
Expected return on plan assets (as a percent) | 4.70% | 5.50% | 5.80%
Rate of compensation increase | 0.00% | 0.00% |
Non-US Pension Plans |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | $ 82.8 | $ 252.5 |
Distribution of MFS | 0.0 | (170.4) |
Service cost | 1.9 | 1.7 | $ 2.6
Interest cost | 2.1 | 2.5 | 8.9
Participant contributions | 0.0 | 0.0 |
Medicare subsidies received | 0.0 | 0.0 |
Plan amendments | 0.0 | 0.0 |
Net transfer out | 0.0 | 0.0 |
Actuarial (gain) loss | (2.2) | 11.0 |
Currency translation adjustment | 9.2 | (9.9) |
Benefits paid | (4.3) | (4.6) |
Benefit obligation, end of year | 89.5 | 82.8 | 252.5
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 41.8 | 196.9 |
Distribution of MFS | 0.0 | (147.8) |
Actual return on plan assets | 1.1 | 2.7 |
Employer contributions | 2.1 | 2.2 |
Participant contributions | 0.0 | 0.0 |
Medicare subsidies received | 0.0 | 0.0 |
Currency translation adjustment | 4.4 | (7.6) |
Net transfer out | 0.0 | 0.0 |
Benefits paid | (4.3) | (4.6) |
Fair value of plan assets, end of year | 45.1 | 41.8 | $ 196.9
Funded status | (44.4) | (41.0) |
Amounts recognized in the Consolidated Balance sheet at December 31 |  |  |
Pension asset | 0.0 | 0.0 |
Pension obligation | (44.4) | (41.0) |
Postretirement medical and other benefit obligations | 0.0 | 0.0 |
Net amount recognized | $ (44.4) | $ (41.0) |
Weighted-Average Assumptions |  |  |
Discount rate | 2.20% | 2.10% |
Expected return on plan assets (as a percent) | 3.40% | 4.00% | 3.60%
Rate of compensation increase | 2.60% | 2.40% |
Postretirement Health and Other |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | $ 41.6 | $ 51.8 |
Distribution of MFS | 0.0 | (10.1) |
Service cost | 0.3 | 0.3 | $ 0.4
Interest cost | 1.0 | 1.7 | 2.0
Participant contributions | 1.4 | 1.9 |
Medicare subsidies received | 0.0 | 0.2 |
Plan amendments | (13.8) | 0.0 |
Net transfer out | 0.0 | 0.0 |
Actuarial (gain) loss | 2.9 | 1.8 |
Currency translation adjustment | 0.0 | 0.0 |
Benefits paid | (4.5) | (6.0) |
Benefit obligation, end of year | 28.9 | 41.6 | 51.8
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 0.0 | 0.0 |
Distribution of MFS | 0.0 | 0.0 |
Actual return on plan assets | 0.0 | 0.0 |
Employer contributions | 3.1 | 3.9 |
Participant contributions | 1.4 | 1.9 |
Medicare subsidies received | 0.0 | 0.2 |
Currency translation adjustment | 0.0 | 0.0 |
Net transfer out | 0.0 | 0.0 |
Benefits paid | (4.5) | (6.0) |
Fair value of plan assets, end of year | 0.0 | 0.0 | $ 0.0
Funded status | (28.9) | (41.6) |
Amounts recognized in the Consolidated Balance sheet at December 31 |  |  |
Pension asset | 0.0 | 0.0 |
Pension obligation | 0.0 | 0.0 |
Postretirement medical and other benefit obligations | (28.9) | (41.6) |
Net amount recognized | $ (28.9) | $ (41.6) |
Weighted-Average Assumptions |  |  |
Discount rate | 3.30% | 3.80% |
Expected return on plan assets (as a percent) | 0.00% | 0.00% | 0.00%
Rate of compensation increase | 0.00% | 0.00% |

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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of contributions received by defined benefit plan from participant which increase benefit obligation. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. + 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 (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
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- Definition Amount of receipt from prescription drug subsidy which increases plan assets of defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + 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)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of liability, recognized in statement of financial position, for defined benefit other postretirement plan. Excludes pension plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
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