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Employee Benefit Plans - Reconciliation of the Changes in Benefit Obligation, Plan Assets, and Funded Status (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | $ 161.3 |  |
Fair value of plan assets, end of year | 125.1 | $ 161.3 |
U.S. Pension Plans |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | 162.3 | 155.6 |
Service cost | 0.0 | 0.0 |
Interest cost | 5.2 | 5.3 |
Participant contributions | 0.0 | 0.0 |
Plan amendments | 0.0 | 0.0 |
Actuarial (gain) loss | (9.2) | 10.0 |
Currency translation adjustment | 0.0 | 0.0 |
Pension settlement | (18.9) | 0.0 |
Benefits paid | (8.8) | (8.6) |
Benefit obligation, end of year | 130.5 | 162.3 | $ 155.6
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 116.2 | 108.6 |
Actual return on plan assets | (8.9) | 11.5 |
Employer contributions | 5.3 | 4.7 |
Participant contributions | 0.0 | 0.0 |
Currency translation adjustment | 0.0 | 0.0 |
Pension settlement | (18.9) | 0.0 |
Benefits paid | (8.8) | (8.6) |
Fair value of plan assets, end of year | 84.9 | 116.2 | 108.6
Funded status | (45.6) | (46.1) |
Amounts recognized in the Consolidated Balance sheet at December 31 |  |  |
Pension asset | 0.0 | 0.0 |
Pension obligation | (45.6) | (46.1) |
Postretirement medical and other benefit obligations | 0.0 | 0.0 |
Net amount recognized | $ (45.6) | $ (46.1) |
Weighted-Average Assumptions |  |  |
Discount rate | 4.30% | 3.60% |
Expected return on plan assets (as a percent) | 5.30% | 4.70% |
Rate of compensation increase | 0.00% | 0.00% |
Non-US Pension Plans |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | $ 89.5 | $ 82.8 |
Service cost | 1.8 | 1.9 |
Interest cost | 2.1 | 2.1 |
Participant contributions | 0.0 | 0.0 |
Plan amendments | 0.0 | 0.0 |
Actuarial (gain) loss | (3.0) | (2.2) |
Currency translation adjustment | (4.6) | 9.2 |
Pension settlement | 0.0 | 0.0 |
Benefits paid | (3.9) | (4.3) |
Benefit obligation, end of year | 81.9 | 89.5 | 82.8
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 45.1 | 41.8 |
Actual return on plan assets | (1.4) | 1.1 |
Employer contributions | 2.8 | 2.1 |
Participant contributions | 0.0 | 0.0 |
Currency translation adjustment | (2.5) | 4.4 |
Pension settlement | 0.0 | 0.0 |
Benefits paid | (3.9) | (4.3) |
Fair value of plan assets, end of year | 40.1 | 45.1 | 41.8
Funded status | (41.8) | (44.4) |
Amounts recognized in the Consolidated Balance sheet at December 31 |  |  |
Pension asset | 0.0 | 0.0 |
Pension obligation | (41.8) | (44.4) |
Postretirement medical and other benefit obligations | 0.0 | 0.0 |
Net amount recognized | $ (41.8) | $ (44.4) |
Weighted-Average Assumptions |  |  |
Discount rate | 2.20% | 2.20% |
Expected return on plan assets (as a percent) | 2.70% | 3.40% |
Rate of compensation increase | 3.50% | 2.60% |
Postretirement Medical and Other |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning of year | $ 28.9 | $ 41.6 |
Service cost | 0.2 | 0.3 | 0.3
Interest cost | 0.8 | 1.0 | 1.7
Participant contributions | 0.7 | 1.4 |
Plan amendments | 0.0 | (13.8) |
Actuarial (gain) loss | (7.2) | 2.9 |
Currency translation adjustment | 0.0 | 0.0 |
Pension settlement | 0.0 | 0.0 |
Benefits paid | (2.7) | (4.5) |
Benefit obligation, end of year | 20.7 | 28.9 | 41.6
Change in Plan Assets |  |  |
Fair value of plan assets, beginning of year | 0.0 | 0.0 |
Actual return on plan assets | 0.0 | 0.0 |
Employer contributions | 2.0 | 3.1 |
Participant contributions | 0.7 | 1.4 |
Currency translation adjustment | 0.0 | 0.0 |
Pension settlement | 0.0 | 0.0 |
Benefits paid | (2.7) | (4.5) |
Fair value of plan assets, end of year | 0.0 | 0.0 | $ 0.0
Funded status | (20.7) | (28.9) |
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 | (20.7) | (28.9) |
Net amount recognized | $ (20.7) | $ (28.9) |
Weighted-Average Assumptions |  |  |
Discount rate | 4.10% | 3.30% |
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement. + 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 (a)(10) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 + Details
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- Definition Amount of contributions received by defined benefit plan from participant which increases plan assets. + 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 (b)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. + 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 (b)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: 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 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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