Selected Financial Information Relating To Company's Segments (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net Sales		$ 1,144.2	$ 1,089.4	$ 1,079.4	$ 1,044.7	$ 1,074.4	$ 1,037.6	$ 1,027.9	$ 1,006.0	$ 4,357.7	$ 4,145.9	$ 3,776.2
Gross profit		524.0	507.7	481.5	470.8	474.3	460.1	454.9	451.5	1,984.0	1,840.8	1,729.6
Marketing Expenses										515.0	483.2	454.2
Selling, General and Administrative Expenses										628.8	565.9	542.7
Income from Operations		195.2	$ 216.8	$ 187.4	$ 240.8	193.4	$ 204.2	$ 173.8	$ 220.3	840.2	791.7	732.7
Equity in Earnings (Losses) of Affiliates										6.6	9.2	10.8
Income Before Income Taxes										773.7	719.5	692.7
Identifiable Assets		6,657.4				6,069.2				6,657.4	6,069.2	6,014.8
Capital Expenditures										73.7	60.4	45.0
Depreciation & Amortization										176.4	141.1	125.4
Operating Segments | Consumer Domestic
Segment Reporting Information [Line Items]
Net Sales										3,302.6	3,129.9	2,854.9
Gross profit										1,575.2	1,448.9	1,380.1
Marketing Expenses										398.0	383.3	364.1
Selling, General and Administrative Expenses										470.1	422.7	366.6
Income from Operations										707.1	642.9	649.4
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										645.8	577.2	606.4
Identifiable Assets		5,099.1				4,642.4				5,099.1	4,642.4	4,543.2
Capital Expenditures										53.9	36.0	30.6
Depreciation & Amortization										131.9	103.5	95.5
Operating Segments | Consumer International
Segment Reporting Information [Line Items]
Net Sales										756.3	709.5	621.1
Gross profit										346.1	318.4	281.0
Marketing Expenses										112.9	95.4	85.7
Selling, General and Administrative Expenses										151.7	131.6	158.5
Income from Operations										81.5	91.4	36.8
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										74.0	81.5	32.0
Identifiable Assets		1,110.0				991.6				1,110.0	991.6	1,112.4
Capital Expenditures										9.4	12.5	8.9
Depreciation & Amortization										27.1	19.9	16.8
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net Sales										298.8	306.5	300.2
Gross profit										110.9	117.5	101.3
Marketing Expenses										4.1	4.5	4.4
Selling, General and Administrative Expenses										55.2	55.6	50.4
Income from Operations										51.6	57.4	46.5
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes										47.3	51.6	43.5
Identifiable Assets		340.4				347.4				340.4	347.4	268.5
Capital Expenditures										10.4	11.9	5.5
Depreciation & Amortization										14.1	13.5	10.3
Corporate
Segment Reporting Information [Line Items]
Net Sales	[1]									0.0	0.0	0.0
Gross profit	[1]									(48.2)	(44.0)	(32.8)
Marketing Expenses	[1]									0.0	0.0	0.0
Selling, General and Administrative Expenses	[1]									(48.2)	(44.0)	(32.8)
Income from Operations	[1]									0.0	0.0	0.0
Equity in Earnings (Losses) of Affiliates	[1]									6.6	9.2	10.8
Income Before Income Taxes	[1]									6.6	9.2	10.8
Identifiable Assets	[1]	$ 107.9				$ 87.8				107.9	87.8	90.7
Capital Expenditures	[1]									0.0	0.0	0.0
Depreciation & Amortization	[1]									$ 3.3	$ 4.2	$ 2.8

[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 $48.2, $44.0, and $32.8 for 2019, 2018 and 2017, respectively.
^(B) Equity in earnings (loss) of affiliates from Armand and ArmaKleen for the year ended December 31, 2019, 2018 and 2017.
^(C) Corporate assets include deferred compensation investments and the Company's investment in unconsolidated affiliates.