Retirement Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
U.S. and Puerto Rico [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Contribution towards defined benefit plans	$ 2.0
Additional contribution towards defined benefit plans	0
Foreign-based defined benefit plans [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Contribution towards defined benefit plans	7.2
Additional contribution towards defined benefit plans	$ 7.3