Retirement Benefit Plans - Components of Net Pension Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. and Puerto Rico [Member]
Schedule of Expected Future Pension Benefit Payment [Line Items]
Service cost	$ 11.8	$ 10.9	$ 11.9
Interest cost	15.8	15.5	13.2
Expected return on plan assets	(31.8)	(30.8)	(28.7)
Amortization of prior service cost	(3.7)	(2.6)	(2.6)
Amortization of unrecognized actuarial loss	17.4	10.6	14.8
Net periodic benefit cost	9.5	3.6	8.6
Foreign-based Defined Benefit Plans [Member]
Schedule of Expected Future Pension Benefit Payment [Line Items]
Service cost	18.9	14.7	16.1
Interest cost	8.8	9.2	5.6
Expected return on plan assets	(13.9)	(11.0)	(6.7)
Amortization of prior service cost	(1.9)	(1.3)	(1.3)
Amortization of unrecognized actuarial loss	2.7	0.5	1.8
Net periodic benefit cost	$ 14.6	$ 12.1	$ 15.5