Plan Status of U.S. Plan, Non-U.S. Plan, and supplemental Plan (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	$ 974.8	$ 827.9
Projected Benefit Obligation	1,091.5	919.7	1,030.4
Plan Assets at Fair Value	1,440.8	1,342.1	1,277.7
Funded Status at end of year	349.3	422.4
Weighted-Average Assumptions:
Discount Rates	4.25%	5.00%
Rate of Increase in Compensation Level	4.25%	4.25%
Expected Long-Term Rate of Return on Assets	7.25%	7.75%
Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	184.6	164.7
Projected Benefit Obligation	184.6	164.7	158.1
Plan Assets at Fair Value	157.6	148.5	133.9
Funded Status at end of year	(27.0)	(16.2)
Weighted-Average Assumptions:
Discount Rates	3.20%	4.31%
Expected Long-Term Rate of Return on Assets	4.00%	4.84%
Supplemental Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	109.2	89.8
Projected Benefit Obligation	123.0	101.5	106.4
Funded Status at end of year	$ (123.0)	$ (101.5)
Weighted-Average Assumptions:
Discount Rates	4.25%	5.00%
Rate of Increase in Compensation Level	4.25%	4.25%

Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Long Term Return on Assets

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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)

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- Definition

The interest rate used to adjust for the time value of money for the plan.

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- Definition

Expected rate of compensation increases (for pay-related plans).

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- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-URI http://asc.fasb.org/extlink&oid=6522206

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Postretirement Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503904

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

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- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

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