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Pension and Other Postretirement Benefit Plans - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($) CompensationPlan yr Agreement | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Services completed by employees for eligibility, retiring age | yr | 55 |  |
Accumulated benefit obligation | $ 1,099.2 | $ 1,192.7 |
Projected benefit obligation of pension plans with accumulated benefit obligations in excess of plan assets | 874.4 | 930.4 |
Accumulated benefit obligation of pension plans with accumulated benefit obligations in excess of plan assets | 859.5 | 912.5 |
Fair value of plan assets of pension plans with accumulated benefit obligations in excess of plan assets | 607.0 | 608.5 |
Tax benefits (expense) related to defined benefit plans recognized in other comprehensive income (loss) | (8.3) | 56.5 | $ (70.1)
Postretirement benefit obligation effect of 1% increase in the assumed rate of healthcare cost | 16.0 |  |
Net periodic postretirement benefit cost effect of 1% increase in the assumed rate of healthcare cost | 1.0 |  |
Postretirement benefit obligation effect of 1% decrease in the assumed rate of healthcare cost | 13.2 |  |
Net periodic postretirement benefit cost effect of 1% decrease in the assumed rate of healthcare cost | $ 0.7 |  |
Number of multi-employer pension plans | CompensationPlan | 2 |  |
Number of collective bargaining agreements | Agreement | 3 |  |
Defined contribution expense | $ 13.3 | 12.0 | 11.1
Defined Contribution Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined contribution expense | 19.4 | 17.8 | 16.4
U.S. Other Postretirement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Settlement gain (loss) | $ 0.0 | 0.0 | 0.0
Assumed increase in healthcare costs trend rate | 6.70% |  |
Ultimate healthcare costs trend rate | 4.50% |  |
Foreign Other Postretirement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Settlement gain (loss) | $ 0.0 | 0.0 | 5.9
Assumed increase in healthcare costs trend rate | 5.30% |  |
Ultimate healthcare costs trend rate | 4.50% |  |
U.S. Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Curtailment loss | $ 0.0 | 0.0 | 0.0
Settlement gain (loss) | $ (0.2) | (0.1) | 0.0
U.S. Pension | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 50.00% |  |
Maximum target percentage of asset allocation | 75.00% |  |
U.S. Pension | Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 15.00% |  |
Maximum target percentage of asset allocation | 40.00% |  |
U.S. Pension | Alternative Investment Allocation |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 0.00% |  |
Maximum target percentage of asset allocation | 30.00% |  |
U.S. Pension | Cash and other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 0.00% |  |
Maximum target percentage of asset allocation | 10.00% |  |
Foreign Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Curtailment loss | $ (7.7) | 0.0 | 0.0
Settlement gain (loss) | $ 0.0 | $ 0.0 | $ (2.5)
Foreign Pension | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 45.00% |  |
Maximum target percentage of asset allocation | 65.00% |  |
Foreign Pension | Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 30.00% |  |
Maximum target percentage of asset allocation | 40.00% |  |
Foreign Pension | Alternative Investment Allocation |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 0.00% |  |
Maximum target percentage of asset allocation | 20.00% |  |
Foreign Pension | Cash and other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum target percentage of asset allocation | 0.00% |  |
Maximum target percentage of asset allocation | 10.00% |  |
Pension Plans, Defined Benefit | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated minimum required contributions to pension plans in next fiscal year | $ 10.0 |  |
Pension Plans, Defined Benefit | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated minimum required contributions to pension plans in next fiscal year | $ 15.0 |  |

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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + 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 (m) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + 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 (m) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + 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 (m) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + 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 (m) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Health Care Cost Trend Rate -URI http://asc.fasb.org/extlink&oid=6514820 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=58242635&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2417-114920 + Details
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- Definition If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=58242635&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2417-114920 + Details
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- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2417-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=58242635&loc=d3e4179-114921 + Details
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- Definition The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Curtailment -URI http://asc.fasb.org/extlink&oid=6520938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&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 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
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- Definition Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569643-111683 + Details
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