Share-Based Compensation (Compensation Cost Recognized in Income Statement) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||
Before-Tax Share-Based Compensation | $ 37.6 | $ 45.7 | $ 44.0 |
Discontinued Operations [Member] | |||
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||
Before-Tax Share-Based Compensation | 6.6 | 6.2 | 6.0 |
Continuing Operations [Member] | |||
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||
Before-Tax Share-Based Compensation | 31.0 | 39.5 | 38.0 |
Income Tax Benefit | (10.8) | (13.8) | (13.5) |
After-Tax Share-Based Compensation | $ 20.2 | $ 25.7 | $ 24.5 |