Components of Net Periodic Pension and Postretirement Benefit Expense (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits, Domestic
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 0.2	$ 0.2
Interest cost	13.3	14.5	15.9
Expected return on plan assets	(16.9)	(16.3)	(15.6)
Net actuarial gain	7.4	7.1	3.2
Net periodic cost	3.8	5.5	3.7
Curtailments and settlements			1.6
Total expense	3.8	5.5	5.3
Discount rate	3.95%	4.50%	5.25%
Expected return on plan assets	7.75%	8.00%	8.00%
Pension Benefits, Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.2	1.9	1.9
Interest cost	2.3	2.6	2.8
Expected return on plan assets	(1.2)	(1.4)	(1.4)
Net actuarial gain	0.4	0.2
Net periodic cost	3.7	3.3	3.3
Curtailments and settlements	(0.1)
Total expense	3.6	3.3	3.3
Discount rate	3.34%	4.30%	4.78%
Expected return on plan assets	3.98%	4.53%	4.83%
Rate of compensation increase	2.56%	2.51%	2.98%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.2	2.1	2.1
Interest cost	15.6	17.1	18.7
Expected return on plan assets	(18.1)	(17.7)	(17.0)
Net actuarial gain	7.8	7.3	3.2
Net periodic cost	7.5	8.8	7.0
Curtailments and settlements	(0.1)		1.6
Total expense	7.4	8.8	8.6
Discount rate	3.85%	4.47%	5.18%
Expected return on plan assets	7.32%	7.60%	7.63%
Rate of compensation increase	2.56%	2.51%	2.98%
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.1	0.3
Interest cost	0.3	0.3	0.7
Prior service benefit	(0.3)	(0.4)	(0.8)
Net actuarial gain	(0.1)	(0.1)	(0.1)
Net periodic cost	(0.1)	(0.1)	0.1
Curtailments and settlements			(7.3)
Total expense	$ (0.1)	$ (0.1)	$ (7.2)
Discount rate	3.90%	4.40%	5.50%