|
Goodwill (Details) (USD $)
In Millions, unless otherwise specified |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2010
|
|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||||
| Weight of income approach used in measurement of goodwill impairment | 75.00% | 75.00% | ||
| Weight of market approach used in measurement of goodwill impairment | 25.00% | 25.00% | ||
| Goodwill [Roll Forward] | ||||
| Goodwill | $ 1,366.2 | $ 1,794.1 | ||
| Goodwill, Impairment Loss | (427.8) | (427.8) | ||
| Currency translation adjustment | (0.4) | (0.1) | ||
| Goodwill | $ 1,366.2 | $ 1,366.6 | $ 1,366.2 | $ 1,794.1 |