Summary of Changes in Projected Benefit Obligation (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
U.S. Benefit Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	$ 159.3		$ 179.7
Service cost	0	0
Interest cost	7.9	7.3
Actuarial loss (gain)	28.6	(17.6)
Benefits and expenses paid	(9.5)	(10.1)
Foreign currency translation	0	0
Benefit obligation, end of year	186.3	159.3	179.7
Accumulated benefit obligation, end of year	184.4	157.3
Non-U.S. Benefit Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	61.0		65.6
Service cost	0.4	0.3
Interest cost	2.6	2.5
Actuarial loss (gain)	6.8	(5.3)
Benefits and expenses paid	(3.1)	(3.1)
Foreign currency translation	(4.1)	1.0
Benefit obligation, end of year	63.6	61.0	65.6
Accumulated benefit obligation, end of year	$ 63.1	$ 60.4

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.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

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- Definition

Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

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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.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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Changes in the defined benefit obligation, not otherwise separately disclosed in the financial statements.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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