|
Retirement Benefits (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Sep. 30, 2014
|
|
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Settlement loss | $ 12.6 | $ 0 | $ 12.6 | $ 0 | |
| Company contributions | 95.4 | 43.9 | 78.2 | ||
| Business Realignment and Reorganization [Member] | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Special termination benefits | 3.0 | 5.7 | |||
| Curtailment losses | 3.1 | 3.1 | |||
| Minimum [Member] | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Total expected contributions for current fiscal year | 130 | ||||
| Maximum [Member] | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Total expected contributions for current fiscal year | $ 150 | ||||