Restructuring (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Restructuring
Costs incurred		$ 4.3	$ 3.4	$ 6.8
Americas
Restructuring
Costs incurred				3.1
Europe
Restructuring
Costs incurred		4.3	3.4	3.3
APMEA
Restructuring
Costs incurred				0.4
2015 Actions
Restructuring
Costs incurred				2.4
2015 Actions | Americas and APMEA
Restructuring
Pre-tax program to date restructuring and other charges incurred				18.1
Restructuring reserve			0.0
Elimination of net sales				165.0
Expected pre-tax program to date restructuring and other charges incurred				59.8
Goodwill and intangible asset impairment charges				13.5
Other transformation and deployment costs				28.2
2015 Actions | Americas and APMEA | Facility exit and other
Restructuring
Costs incurred				2.4
2018 Actions | Europe
Restructuring
Pre-tax program to date restructuring and other charges incurred			4.0
Total expected restructuring costs	$ 8.3	8.3			$ 5.0
Restructuring reserve	3.2	3.2
Costs incurred	1.6	4.3
Other Actions
Restructuring
Costs incurred		4.3	$ 3.4	4.4
Other Actions | Europe
Restructuring
Total expected restructuring costs				$ 4.1	$ 3.4
Restructuring reserve	$ 0.0	$ 0.0