Retirement Benefit Plans - Summary of Benefits Expected to be Paid Out (Detail) $ in Millions	Dec. 31, 2017 USD ($)
U.S. and Puerto Rico [Member]
Schedule of Expected Future Pension Benefit Payment [Line Items]
2018	$ 22.5
2019	18.0
2020	19.2
2021	20.2
2022	21.7
2023-2027	119.6
Foreign-based Defined Benefit Plans [Member]
Schedule of Expected Future Pension Benefit Payment [Line Items]
2018	23.4
2019	25.2
2020	24.6
2021	25.0
2022	27.0
2023-2027	$ 133.7

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

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=82843861&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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