Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

v3.10.0.1
Commitments and Contingencies (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]        
Rental expense charged to income   $ 23.2 $ 23.6 $ 27.8
Aggregate future minimum lease payments for operating leases, excluding renewable periods        
2017   20.4    
2018   15.8    
2019   14.2    
2020   11.7    
2021   8.5    
Thereafter   33.7    
Future minimum operating lease payments, excluding renewable periods   104.3    
Commitments and Contingencies        
Loss Contingency, Damages Sought 38.5      
General Claims and Lawsuit | Maximum        
Commitments and Contingencies        
Deductibles and self-insured retentions per occurrence or per claim   $ 0.5