Brazilian Consumer Business - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended			9 Months Ended		12 Months Ended
		Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net income per share - Diluted		$ 0.62		$ 0.58	$ 1.87	$ 1.70
Net Sales	[1]	$ 1,089.4		$ 1,037.6	$ 3,213.5	$ 3,071.5
Brazilian Consumer Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Sale of business			$ 7.6
Net income per share - Diluted			$ 0.03
Net Sales							$ 15.0

[1] Intersegment sales from Consumer International to Consumer Domestic, which are not reflected in the table, were $2.8 and $1.9 for the three months ended September 30, 2019 and September 30, 2018, respectively, and were $7.5 and $4.5 for the nine months ended September 30, 2019 and September 30, 2018, respectively.