Pension Benefits (Components of Net Periodic Benefit Income Cost) (Detail) (Pension Benefits, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.2	$ 0.1	$ 0.8	$ 0.7
Interest cost	4.0	4.2	11.5	12.5
Expected return on plan assets	(4.7)	(4.9)	(14.1)	(15.0)
Amortization of net loss	1.4	1.1	4.4	3.7
Settlement loss			1.1	15.1
Net periodic benefit cost	0.9	0.5	3.7	17.0
International Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.7	0.6	2.0	1.8
Interest cost	1.2	1.2	3.7	3.6
Expected return on plan assets	(1.1)	(1.1)	(3.4)	(3.3)
Amortization of net loss	0.3	0.2	0.9	0.6
Net periodic benefit cost	$ 1.1	$ 0.9	$ 3.2	$ 2.7