|
Summary of Significant Accounting Policies - Other Intangible Assets (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 1 Months Ended | 3 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2010
|
Sep. 30, 2012
Trademarks/brands
|
Sep. 30, 2011
Trademarks/brands
|
Sep. 30, 2012
Customer relationships
|
Sep. 30, 2011
Customer relationships
|
Sep. 30, 2011
Trademarks/brands
|
Jun. 30, 2011
Trademarks/brands
|
Sep. 30, 2010
Trademarks/brands
|
Sep. 30, 2012
Trademarks/brands
|
|
| Finite-Lived and Indefinite-Lived, Intangible Assets | |||||||||||
| Amortization of intangible assets | $ 12.6 | $ 12.6 | $ 12.7 | ||||||||
| Finite-Lived Intangible Assets, Future Amortization Expense [Abstract] | |||||||||||
| 2012 | 12.6 | ||||||||||
| 2013 | 12.4 | ||||||||||
| 2014 | 12.4 | ||||||||||
| 2015 | 12.4 | ||||||||||
| 2016 | 12.4 | ||||||||||
| Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] | |||||||||||
| Carrying amount | 543.6 | 543.6 | |||||||||
| Finite-Lived Intangible Assets [Abstract] | |||||||||||
| Finite-Lived Intangible Assets, Gross | 244.9 | 244.9 | 153.9 | 153.9 | 91.0 | 91.0 | |||||
| Finite-Lived Intangible Assets, Accumulated Amortization | 52.5 | 39.9 | 32.1 | 24.4 | 15.5 | 20.4 | |||||
| Finite-Lived Intangible Assets, Net | 192.4 | 205.0 | 121.8 | 129.5 | 75.5 | 70.6 | |||||
| Intangible Assets, Net (Excluding Goodwill) [Abstract] | |||||||||||
| Carrying amount, total | 788.5 | 788.5 | |||||||||
| Other intangible assets, net | 736.0 | 748.6 | |||||||||
| Indefinite-lived Intangible Assets, Impairment Losses | $ 106.6 | $ 32.1 | $ 19.4 | ||||||||