Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill Intangible Assets (Details)

v3.7.0.1
Intangible Assets and Goodwill Intangible Assets (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Sep. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]        
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     $ 2.2  
Finite-Lived Intangible Assets, Gross $ 591.4 $ 591.4   $ 585.4
Accumulated amortization on intangible assets (198.7) (198.7)   (174.2)
Indefinite and Finite Lived Intangible Assets, Gross 723.0     715.7
Trade Names [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 0.2 0.2   0.2
Accumulated amortization on intangible assets (0.1) (0.1)   (0.1)
Customer Relationships [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 463.2 463.2   459.5
Accumulated amortization on intangible assets (118.9) (118.9)   (100.7)
Technology-Based Intangible Assets [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 78.9 78.9   77.9
Accumulated amortization on intangible assets (37.9) (37.9)   (33.3)
Computer Software, Intangible Asset [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 48.9 48.9   47.4
Accumulated amortization on intangible assets (41.6) (41.6)   (39.8)
Other Intangible Assets [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 0.2 0.2   0.4
Accumulated amortization on intangible assets (0.2) (0.2)   (0.3)
Trade Names [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Indefinite-Lived Intangible Assets (Excluding Goodwill) 131.6 $ 131.6   $ 130.3
Minimum        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life   3 years    
Maximum        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life   21 years    
Customer Concentration Risk [Member] | Trade Names [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Indefinite-Lived Intangible Assets (Excluding Goodwill) $ 13.0 $ 13.0