Selected Financial Information Relating To Company's Segments (Detail) (USD $) In Millions, unless otherwise specified	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, 2011		Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net Sales	$ 822.6		$ 804.8		$ 787.6		$ 779.3		$ 809.7	[1]	$ 725.2	[1]	$ 696.4	[1]	$ 690.6	[1]	$ 731.1		$ 701.0	$ 674.9	$ 642.3	$ 3,194.3		$ 2,921.9	[1]	$ 2,749.3
Gross profit	371.7		365.2		351.0		350.1		358.4		327.5		303.0		302.5		316.5		309.9	300.0	288.1	1,438.0		1,291.4		1,214.5
Marketing expenses																						399.8		357.3		354.1
Selling, general and administrative expenses																						416.0		389.0		367.8
Income from Operations	144.6	[2]	167.8	[2]	140.5	[2]	169.3	[2]	134.6		145.4		122.4		142.7		117.4		126.3	117.8	131.1	622.2	[2]	545.1		492.6
Equity in earnings of affiliates	1.4		1.9		(1.1)		0.6		1.6		2.4		2.4		2.5		1.7		2.9	3.2	2.2	2.8		8.9		10.0
Interest Expense																						27.7	[3]	14.0	[3]	8.7	[3]
Investment earnings																						2.6	[3]	1.7	[3]	1.9	[3]
Other Income, net																						(2.1)	[3]	0.8	[3]	(1.2)	[3]
Income Before Income Taxes																						597.8		542.5		494.6
Identifiable Assets	4,259.7								4,098.1								3,117.6					4,259.7		4,098.1		3,117.6
Capital Expenditures																						67.1		74.5		76.6
Depreciation & Amortization																						90.5		85.0		77.1
Operating Segments | Consumer Domestic
Segment Reporting Information [Line Items]
Net Sales																						2,413.5		2,156.9		1,979.1
Gross profit																						1,163.0		1,015.9		936.9
Marketing expenses																						320.5		280.3		274.9
Selling, general and administrative expenses																						318.6		297.6		269.5
Income from Operations																						524.0		438.0		392.5
Equity in earnings of affiliates																						0		0		0
Interest Expense																						23.4	[3]	11.2	[3]	7.0	[3]
Investment earnings																						2.2	[3]	1.4	[3]	1.5	[3]
Other Income, net																						(1.8)	[3]	0.6	[3]	(1.0)	[3]
Income Before Income Taxes																						501.0		428.8		386.0
Identifiable Assets	3,407.4								3,317.5								2,437.9					3,407.4		3,317.5		2,437.9
Capital Expenditures																						53.6		58.9		57.4
Depreciation & Amortization																						77.3		70.5		61.4
Operating Segments | Consumer International
Segment Reporting Information [Line Items]
Net Sales																						532.8		510.1		509.1
Gross profit																						243.0		236.9		238.7
Marketing expenses																						76.6		74.5		75.9
Selling, general and administrative expenses																						98.8		89.8		92.8
Income from Operations																						67.4		72.6		70.0
Equity in earnings of affiliates																						0		0		0
Interest Expense																						3.0	[3]	1.9	[3]	1.2	[3]
Investment earnings																						0.3	[3]	0.2	[3]	0.3	[3]
Other Income, net																						(0.2)	[3]	0.1	[3]	(0.2)	[3]
Income Before Income Taxes																						64.5		71.0		68.9
Identifiable Assets	602.5								543.8								476.5					602.5		543.8		476.5
Capital Expenditures																						10.3		10.0		12.2
Depreciation & Amortization																						6.1		7.9		8.1
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net Sales																						248.0		254.9		261.1
Gross profit																						63.3		68.0		64.2
Marketing expenses																						2.7		2.5		3.3
Selling, general and administrative expenses																						29.9		31.0		30.8
Income from Operations																						30.8		34.5		30.1
Equity in earnings of affiliates																						0		0		0
Interest Expense																						1.3	[3]	0.9	[3]	0.5	[3]
Investment earnings																						0.1	[3]	0.1	[3]	0.1	[3]
Other Income, net																						(0.1)	[3]	0.1	[3]	0	[3]
Income Before Income Taxes																						29.5		33.8		29.7
Identifiable Assets	140.6								135.1								132.2					140.6		135.1		132.2
Capital Expenditures																						3.2		5.6		7.0
Depreciation & Amortization																						5.4		5.1		5.7
Corporate
Segment Reporting Information [Line Items]
Net Sales																						0	[4]	0	[4]	0	[4]
Gross profit																						(31.3)	[4]	(29.4)	[4]	(25.3)	[4]
Marketing expenses																						0	[4]	0	[4]	0	[4]
Selling, general and administrative expenses																						(31.3)	[4]	(29.4)	[4]	(25.3)	[4]
Income from Operations																						0	[4]	0	[4]	0	[4]
Equity in earnings of affiliates																						2.8	[4]	8.9	[4]	10.0	[4]
Interest Expense																						0	[3],[4]	0	[3],[4]	0	[3],[4]
Investment earnings																						0	[3],[4]	0	[3],[4]	0	[3],[4]
Other Income, net																						0	[3],[4]	0	[3],[4]	0	[3],[4]
Income Before Income Taxes																						2.8	[4]	8.9	[4]	10.0	[4]
Identifiable Assets	109.2	[4]							101.7	[4]							71.0	[4]				109.2	[4]	101.7	[4]	71.0	[4]
Capital Expenditures																						0	[4]	0	[4]	0	[4]
Depreciation & Amortization																						$ 1.7	[4]	$ 1.5	[4]	$ 1.9	[4]

[1] The fourth quarter of 2012 Net Sales includes approximately $70 associated with the acquisition of the L'IL CRITTERS and VITAFUSION gummy vitamin dietary supplement business.

[2] The fourth quarter of 2013 Income from Operations includes approximately $6.5 of trade name impairment charges.

[3] In determining Income before Income Taxes, interest expense, investment earnings, and other income, net, were allocated to the segments based upon each segment's relative Income from Operations.

[4] The Corporate segment reflects the following: (A) The administrative costs of the production planning and logistics functions are included in segment Selling, General and Administrative expenses but are elements of Cost of Sales in the Company's Consolidated Statements of Income. Such amounts were $31.3, $29.4, and $25.3 for 2013, 2012 and 2011, respectively. (B) Equity in earnings (loss) of affiliates from Armand, Armakleen and Natronx. (C) Corporate assets include notes receivable, domestic deferred income taxes, deferred compensation investments and the Company's investment in unconsolidated affiliates.