Selected Financial Information Relating To Company's Segments (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net Sales		$ 1,295.3	$ 1,241.0	$ 1,194.3	$ 1,165.2	$ 1,144.2	$ 1,089.4	$ 1,079.4	$ 1,044.7	$ 4,895.8	$ 4,357.7	$ 4,145.9
Gross profit		557.4	565.2	559.6	532.0	524.0	507.7	481.5	470.8	2,214.2	1,984.0	1,840.8
Marketing Expenses										591.2	515.0	483.2
Selling, General and Administrative Expenses										593.3	628.8	565.9
Income from Operations		190.6	$ 273.8	$ 250.7	$ 314.6	195.2	$ 216.8	$ 187.4	$ 240.8	1,029.7	840.2	791.7
Equity in Earnings (Losses) of Affiliates										6.7	6.6	9.2
Income Before Income Taxes										973.8	773.7	719.5
Identifiable Assets		7,414.5				6,657.4				7,414.5	6,657.4	6,069.2
Capital Expenditures										98.9	73.7	60.4
Depreciation & Amortization										189.7	176.4	141.1
Operating Segments | Consumer Domestic
Segment Reporting Information [Line Items]
Net Sales										3,767.6	3,302.6	3,129.9
Gross profit										1,801.1	1,575.2	1,448.9
Marketing Expenses										460.6	398.0	383.3
Selling, General and Administrative Expenses										455.6	470.1	422.7
Income from Operations										884.9	707.1	642.9
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										832.4	645.8	577.2
Identifiable Assets		5,819.8				5,099.1				5,819.8	5,099.1	4,642.4
Capital Expenditures										81.8	53.9	36.0
Depreciation & Amortization										142.8	131.9	103.5
Operating Segments | Consumer International
Segment Reporting Information [Line Items]
Net Sales										828.2	756.3	709.5
Gross profit										368.8	346.1	318.4
Marketing Expenses										126.9	112.9	95.4
Selling, General and Administrative Expenses										128.7	151.7	131.6
Income from Operations										113.2	81.5	91.4
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										105.0	74.0	81.5
Identifiable Assets		1,144.5				1,110.0				1,144.5	1,110.0	991.6
Capital Expenditures										7.1	9.4	12.5
Depreciation & Amortization										29.6	27.1	19.9
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net Sales										300.0	298.8	306.5
Gross profit										104.1	110.9	117.5
Marketing Expenses										3.7	4.1	4.5
Selling, General and Administrative Expenses										68.8	55.2	55.6
Income from Operations										31.6	51.6	57.4
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										29.7	47.3	51.6
Identifiable Assets		339.7				340.4				339.7	340.4	347.4
Capital Expenditures										10.0	10.4	11.9
Depreciation & Amortization										14.5	14.1	13.5
Corporate
Segment Reporting Information [Line Items]
Net Sales	[1]									0.0	0.0	0.0
Gross profit	[1]									(59.8)	(48.2)	(44.0)
Marketing Expenses	[1]									0.0	0.0	0.0
Selling, General and Administrative Expenses	[1]									(59.8)	(48.2)	(44.0)
Income from Operations	[1]									0.0	0.0	0.0
Equity in Earnings (Losses) of Affiliates	[1]									6.7	6.6	9.2
Income Before Income Taxes	[1]									6.7	6.6	9.2
Identifiable Assets	[1]	$ 110.5				$ 107.9				110.5	107.9	87.8
Capital Expenditures	[1]									0.0	0.0	0.0
Depreciation & Amortization	[1]									$ 2.8	$ 3.3	$ 4.2

[1] 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 $59.8, $48.2, and $44.0 for 2020, 2019 and 2018, respectively.
^(B) Equity in earnings (loss) of affiliates from Armand and ArmaKleen for the year ended December 31, 2020, 2019 and 2018.
^(C) Corporate assets include deferred compensation investments and the Company's investment in unconsolidated affiliates.