Restructuring Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 10.6	$ 6.3
2019 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	27.0
Restructuring Costs	6.6	6.3
2020 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4.0	0.0
Minimum | 2020 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	4.0
Maximum | 2020 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	7.0
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	9.2	5.9
International
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 1.4	$ 0.4