Postretirement Benefit Plans - Changes in Projected Benefit Obligations of Pension and Other Employee-Related Defined Benefit Plans (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in benefit obligation
Benefit obligation - January 1	$ 600.0
Interest cost	8.3	9.5
Amendments	23.3
Benefit obligation - December 31	532.6	600.0
U.S. Pension Plans [Member]
Change in benefit obligation
Benefit obligation - January 1	303.6	277.8
Service cost	4.9	4.8	5.6
Interest cost	12.1	12.9	13.4
Amendments	0.1	0
Actuarial (gain) loss	(22.9)	24.2
Benefits and expenses paid	(16.6)	(16.1)
Assumed in acquisition	0	0
Foreign currency translation	0	0
Benefit obligation - December 31	281.2	303.6	277.8
International Pension Plan [Member]
Change in benefit obligation
Benefit obligation - January 1	83.4	52.3
Service cost	1.7	1.0	0.9
Interest cost	2.5	2.5	2.5
Amendments	0	0
Actuarial (gain) loss	(1.8)	14.8
Benefits and expenses paid	(3.2)	(3.1)
Assumed in acquisition	0	15.0
Foreign currency translation	2.2	0.9
Benefit obligation - December 31	84.8	83.4	52.3
Pension [Member]
Change in benefit obligation
Benefit obligation - January 1	387.0	330.1
Service cost	6.6	5.8	6.5
Interest cost	14.6	15.4	15.9
Amendments	0.1	0
Actuarial (gain) loss	(24.7)	39.0
Benefits and expenses paid	(19.8)	(19.2)
Assumed in acquisition	0	15.0
Foreign currency translation	2.2	0.9
Benefit obligation - December 31	366.0	387.0	330.1
Other Postretirement Benefit Plan, Defined Benefit [Member]
Change in benefit obligation
Benefit obligation - January 1	213.0	191.8
Service cost	2.9	2.5	1.8
Interest cost	8.3	9.5	9.5
Amendments	(19.0)	(3.1)
Actuarial (gain) loss	(30.4)	22.0
Benefits paid	(8.2)	(9.7)
Benefit obligation - December 31	$ 166.6	$ 213.0	$ 191.8