Saving Plans, Pension and Post Retirement Benefits - Summary of Changes in Fair Values of U.S. and International Pension Plans (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Change in Plan Assets:
Fair value of plan assets - end of year	$ 557.6	$ 520.2
Significant Unobservable Inputs (Level 3)
Change in Plan Assets:
Fair value of plan assets - beginning of year	0.6	0
Purchases, sales, and settlements, net	0.6	0.6
Loss on assets held during the period	(0.2)
Transfers into Level 3	0.9
Fair value of plan assets - end of year	1.9	0.6
Fixed income securities | Significant Unobservable Inputs (Level 3)
Change in Plan Assets:
Fair value of plan assets - beginning of year	0.6	0
Purchases, sales, and settlements, net	0.6	0.6
Loss on assets held during the period	(0.2)
Transfers into Level 3	0.9
Fair value of plan assets - end of year	$ 1.9	$ 0.6