Selected Financial Information Relating To Company's Segments (Parenthetical) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Selling, general and administrative expenses		$ 593.3	$ 628.8	$ 565.9
Corporate
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	[1]	(59.8)	(48.2)	(44.0)
Corporate | Cost of Sales
Segment Reporting Information [Line Items]
Selling, general and administrative expenses		$ 59.8	$ 48.2	$ 44.0

[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.