Selected Financial Information Relating To Company's Segments (Details) - USD ($) $ in Millions		3 Months Ended									12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales		$ 1,074.4	$ 1,037.6	$ 1,027.9	$ 1,006.0	$ 1,033.1	$ 967.9	$ 898.0	$ 877.2		$ 4,145.9	$ 3,776.2	$ 3,493.1
Gross profit		474.3	460.1	454.9	451.5	481.4	438.5	410.4	399.3		1,840.8	1,729.6	1,590.6
Marketing Expenses											483.2	454.2	427.2
Selling, General and Administrative Expenses											565.9	542.7	439.2
Income from Operations		193.4	$ 204.2	$ 173.8	$ 220.3	214.7	$ 198.7	$ 123.2	$ 196.1		791.7	732.7	724.2
Equity in Earnings (Losses) of Affiliates										$ 9.2	9.2	10.8	9.2
Income Before Income Taxes											719.5	692.7	705.9
Identifiable Assets		6,069.2				6,014.8				4,354.1	6,069.2	6,014.8	4,354.1
Capital Expenditures											60.4	45.0	49.8
Depreciation & Amortization											141.1	125.4	107.6
Operating Segments | Consumer Domestic
Segment Reporting Information [Line Items]
Net Sales											3,129.9	2,854.9	2,677.8
Gross profit											1,448.9	1,380.1	1,308.8
Marketing Expenses											383.3	364.1	345.2
Selling, General and Administrative Expenses											422.7	366.6	350.7
Income from Operations											642.9	649.4	612.9
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes											577.2	606.4	590.6
Identifiable Assets		4,642.4				4,543.2				3,374.4	4,642.4	4,543.2	3,374.4
Capital Expenditures											36.0	30.6	34.9
Depreciation & Amortization											103.5	95.5	87.8
Operating Segments | Consumer International
Segment Reporting Information [Line Items]
Net Sales											709.5	621.1	525.2
Gross profit											318.4	281.0	235.4
Marketing Expenses											95.4	85.7	78.2
Selling, General and Administrative Expenses											131.6	158.5	89.0
Income from Operations											91.4	36.8	68.2
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes											81.5	32.0	66.3
Identifiable Assets		991.6				1,112.4				714.5	991.6	1,112.4	714.5
Capital Expenditures											12.5	8.9	8.8
Depreciation & Amortization											19.9	16.8	9.5
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net Sales											306.5	300.2	290.1
Gross profit											117.5	101.3	83.0
Marketing Expenses											4.5	4.4	3.8
Selling, General and Administrative Expenses											55.6	50.4	36.1
Income from Operations											57.4	46.5	43.1
Equity in Earnings (Losses) of Affiliates										0.0	0.0	0.0
Income Before Income Taxes											51.6	43.5	39.8
Identifiable Assets		347.4				268.5				181.3	347.4	268.5	181.3
Capital Expenditures											11.9	5.5	6.1
Depreciation & Amortization											13.5	10.3	8.6
Corporate
Segment Reporting Information [Line Items]
Net Sales	[1]										0.0	0.0	0.0
Gross profit	[1]										(44.0)	(32.8)	(36.6)
Marketing Expenses	[1]										0.0	0.0	0.0
Selling, General and Administrative Expenses	[1]										(44.0)	(32.8)	(36.6)
Income from Operations	[1]										0.0	0.0	0.0
Equity in Earnings (Losses) of Affiliates	[1]									9.2	9.2	10.8
Income Before Income Taxes	[1]										9.2	10.8	9.2
Identifiable Assets	[1]	$ 87.8				$ 90.7				$ 83.9	87.8	90.7	83.9
Capital Expenditures	[1]										0.0	0.0	0.0
Depreciation & Amortization	[1]										$ 4.2	$ 2.8	$ 1.7

[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 $44.0, $32.8, and $36.6 for 2018, 2017 and 2016, respectively. (B) Equity in earnings (loss) of affiliates from Armand and ArmaKleen for the year ended December 31, 2018, 2017 and 2016. (C) Corporate assets include deferred compensation investments and the Company's investment in unconsolidated affiliates.