Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill Intangible Assets (Details)

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Intangible Assets and Goodwill Intangible Assets (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 571.1 $ 585.4
Accumulated amortization on intangible assets (178.4) (174.2)
Indefinite and Finite Lived Intangible Assets, Gross 698.3 715.7
Trade Names [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 0.2 0.2
Accumulated amortization on intangible assets (0.1) (0.1)
Customer Relationships [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 448.1 459.5
Accumulated amortization on intangible assets (104.0) (100.7)
Technology-Based Intangible Assets [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 75.1 77.9
Accumulated amortization on intangible assets (34.0) (33.3)
Computer Software, Intangible Asset [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 47.3 47.4
Accumulated amortization on intangible assets (40.0) (39.8)
Other Intangible Assets [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 0.4 0.4
Accumulated amortization on intangible assets (0.3) (0.3)
Trade Names [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets (Excluding Goodwill) $ 127.2 $ 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