|
Business Segment Information (Reconciliation of Operating Income) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Segment Reporting Information [Line Items] | ||||
| Business restructuring and cost reduction actions | $ (55.4) | $ 0 | $ (87.8) | $ 0 |
| Pension settlement loss | (12.6) | 0 | (12.6) | 0 |
| Gain on previously held equity interest | 0 | 0 | 17.9 | 0 |
| Operating Income | 374.4 | 384.7 | 804.4 | 770.3 |
| Segment Total [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Operating Income | $ 442.4 | $ 384.7 | $ 886.9 | $ 770.3 |