Unaudited Interim Financial Information (Detail) (USD $)	3 Months Ended												12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Line Items]
Net sales	$ 791,300,000		$ 758,000,000		$ 759,900,000		$ 740,300,000		$ 762,600,000	$ 722,900,000	$ 742,600,000	$ 730,000,000	$ 3,049,500,000		$ 2,958,100,000	$ 2,896,400,000
Cost of goods sold	310,600,000		291,900,000		296,600,000		295,300,000		287,600,000	272,600,000	285,700,000	279,400,000	1,194,400,000		1,125,300,000	1,097,300,000
Income (loss) from operations before income taxes	1,102,700,000		119,000,000		(135,900,000)		127,600,000		177,300,000	178,200,000	185,500,000	191,400,000	1,213,400,000		732,400,000	510,800,000
Net income (loss)	$ 667,500,000		$ 93,200,000		$ (161,600,000)		$ 90,700,000		$ 128,200,000	$ 129,300,000	$ 133,900,000	$ 138,700,000	$ 689,800,000		$ 530,100,000
Basic earnings (loss) per share available to common shareholders	$ 8.45	[1]	$ 1.17	[1]	$ (2.03)	[1]	$ 1.09	[1]	$ 1.54	$ 1.52	$ 1.56	$ 1.62	$ 8.54	[1]	$ 6.24	$ 3.75
Diluted earnings (loss) per share available to common shareholders	$ 8.28	[1]	$ 1.15	[1]	$ (2.03)	[1],[2]	$ 1.08	[1]	$ 1.52	$ 1.50	$ 1.54	$ 1.60	$ 8.39	[1]	$ 6.16	$ 3.69

[1] Total per share amounts may not add due to rounding.

[2] Common share equivalents primarily from share-based compensation plans were not included in the computation of diluted weighted average shares outstanding because their effect would have been antidilutive.