Geographic, Financial and Other Information - Schedule of Net Sales and Long-Lived Assets by Geographic Area (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 391.3	$ 347.0	$ 357.1	$ 330.7	$ 359.8	$ 337.2	$ 351.2	$ 333.2	$ 1,426.1	$ 1,381.4	$ 1,321.4
Long-Lived Assets	480.2				406.3				480.2	406.3
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									800.0	757.4	729.1
Percentage of net sales by geographic location									56.00%	55.00%	55.00%
Long-Lived Assets	431.7				357.8				431.7	357.8
Percentage Of Long Lived Assets By Geographic Location	90.00%				88.00%				90.00%	88.00%
Outside of The United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									626.1	624.0	592.3
Percentage of net sales by geographic location									44.00%	45.00%	45.00%
Long-Lived Assets	$ 48.5				$ 48.5				$ 48.5	$ 48.5
Percentage Of Long Lived Assets By Geographic Location	10.00%				12.00%				10.00%	12.00%