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Pension and Other Postretirement Benefit Plans - Reconciliation of Change in Benefit Obligation, Change in Plan Assets and Amounts Recognized in Consolidated Balance Sheet (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Foreign |  |  |
Change in benefit obligation: |  |  |
Benefit obligation at end of period | $ 437.1 |  |
Pension | U.S. |  |  |
Change in benefit obligation: |  |  |
Benefit obligation at beginning of period | 558.0 | $ 548.2 |
Service cost | 0.1 | 0.1 | $ 0.1
Interest cost | 19.8 | 21.8 | 29.8
Amendments and settlements | 0.0 | 0.0 |
Actuarial (gain) loss | (43.1) | 13.5 |
Benefits paid | (23.6) | (25.6) |
Annuity purchase | (73.2) | 0.0 |
Curtailment | 0.0 | 0.0 |
Special termination benefits | 0.0 | 0.0 |
Translation adjustment | 0.0 | 0.0 |
Benefit obligation at end of period | 438.0 | 558.0 | 548.2
Change in plan assets: |  |  |
Fair value of plan assets at beginning of period | 438.2 | 412.6 |
Actual return on plan assets | (13.7) | 49.1 |
Employer contributions | 2.9 | 2.1 |
Benefits paid | (23.6) | (25.6) |
Annuity purchase | (73.2) | 0.0 |
Translation adjustment | 0.0 | 0.0 |
Fair value of plan assets at end of period | 330.6 | 438.2 | 412.6
Funded status | (107.4) | (119.8) |
Amounts recognized in the consolidated balance sheet: |  |  |
Other long-term assets | 0.0 | 0.1 |
Accrued liabilities | (2.3) | (2.1) |
Other long-term liabilities | (105.1) | (117.8) |
Pension | Foreign |  |  |
Change in benefit obligation: |  |  |
Benefit obligation at beginning of period | 490.6 | 442.5 |
Service cost | 6.9 | 7.3 | 6.5
Interest cost | 14.7 | 15.0 | 15.8
Amendments and settlements | 0.7 | 0.0 |
Actuarial (gain) loss | (21.8) | 11.7 |
Benefits paid | (21.3) | (23.6) |
Annuity purchase | 0.0 | 0.0 |
Curtailment | 0.4 | 0.8 |
Special termination benefits | 0.0 | 0.0 |
Translation adjustment | (33.1) | 36.9 |
Benefit obligation at end of period |  | 490.6 | 442.5
Change in plan assets: |  |  |
Fair value of plan assets at beginning of period | 406.4 | 367.1 |
Actual return on plan assets | (11.7) | 28.2 |
Employer contributions | 7.3 | 7.5 |
Benefits paid | (21.3) | (23.6) |
Annuity purchase | 0.0 | 0.0 |
Translation adjustment | (28.9) | 27.2 |
Fair value of plan assets at end of period | 351.8 | 406.4 | 367.1
Funded status | (85.3) | (84.2) |
Amounts recognized in the consolidated balance sheet: |  |  |
Other long-term assets | 29.0 | 38.1 |
Accrued liabilities | (2.9) | (2.9) |
Other long-term liabilities | (111.4) | (119.4) |
Other Postretirement | U.S. |  |  |
Change in benefit obligation: |  |  |
Benefit obligation at beginning of period | 56.6 | 64.7 |
Service cost | 0.0 | 0.1 | 0.2
Interest cost | 1.9 | 2.4 | 3.2
Amendments and settlements | 0.0 | 0.0 |
Actuarial (gain) loss | (1.8) | (4.5) |
Benefits paid | (4.3) | (4.0) |
Annuity purchase | 0.0 | 0.0 |
Curtailment | 0.0 | (2.1) |
Special termination benefits | 0.0 | 0.0 |
Translation adjustment | 0.0 | 0.0 |
Benefit obligation at end of period | 52.4 | 56.6 | 64.7
Change in plan assets: |  |  |
Fair value of plan assets at beginning of period | 0.0 | 0.0 |
Actual return on plan assets | 0.0 | 0.0 |
Employer contributions | 4.3 | 4.0 |
Benefits paid | (4.3) | (4.0) |
Annuity purchase | 0.0 | 0.0 |
Translation adjustment | 0.0 | 0.0 |
Fair value of plan assets at end of period | 0.0 | 0.0 | 0.0
Funded status | (52.4) | (56.6) |
Amounts recognized in the consolidated balance sheet: |  |  |
Other long-term assets | 0.0 | 0.0 |
Accrued liabilities | (3.9) | (4.2) |
Other long-term liabilities | (48.5) | (52.4) |
Other Postretirement | Foreign |  |  |
Change in benefit obligation: |  |  |
Benefit obligation at beginning of period | 41.2 | 38.8 |
Service cost | 0.4 | 0.5 | 0.5
Interest cost | 1.4 | 1.5 | 1.6
Amendments and settlements | 0.0 | 0.0 |
Actuarial (gain) loss | (3.9) | (0.7) |
Benefits paid | (1.6) | (1.6) |
Annuity purchase | 0.0 | 0.0 |
Curtailment | 0.0 | (0.2) |
Special termination benefits | 0.0 | 0.1 |
Translation adjustment | (3.2) | 2.8 |
Benefit obligation at end of period | 34.3 | 41.2 | 38.8
Change in plan assets: |  |  |
Fair value of plan assets at beginning of period | 0.0 | 0.0 |
Actual return on plan assets | 0.0 | 0.0 |
Employer contributions | 1.6 | 1.6 |
Benefits paid | (1.6) | (1.6) |
Annuity purchase | 0.0 | 0.0 |
Translation adjustment | 0.0 | 0.0 |
Fair value of plan assets at end of period | 0.0 | 0.0 | $ 0.0
Funded status | (34.3) | (41.2) |
Amounts recognized in the consolidated balance sheet: |  |  |
Other long-term assets | 0.0 | 0.0 |
Accrued liabilities | (1.5) | (1.5) |
Other long-term liabilities | $ (32.8) | $ (39.7) |

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- Definition Defined Benefit Plan, Benefit Obligation, Increase (Decrease) For Plan Amendment And Settlement + References No definition available. + Details
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + 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 (b)(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 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive 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 (a)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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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 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -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 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919 + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. 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 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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