Pension and Other Postretirement Benefit Plans - Expected Future Benefit Payments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
U.S. Pension
Defined Benefit Plan Disclosure [Line Items]
2015	$ 24.2
2016	25.3
2017	26.2
2018	27.5
2019	28.9
Five years thereafter	165.0
Foreign Pension
Defined Benefit Plan Disclosure [Line Items]
2015	19.0
2016	19.3
2017	19.8
2018	20.2
2019	20.6
Five years thereafter	120.6
U.S. Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
2015	5.1
2016	5.2
2017	5.3
2018	5.4
2019	5.5
Five years thereafter	26.7
Foreign Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
2015	2.0
2016	1.3
2017	1.4
2018	1.5
2019	1.5
Five years thereafter	$ 10.2

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Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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