|
Share-Based Compensation (Narratives) (Details) (USD $)
|
6 Months Ended |
|
Mar. 31, 2015
|
| Share-based Compensation Arrangement by Share-based Award [Line Items] |
|
| Shares available for future grant |
5,085,893 |
| Market-Based Deferred Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Award [Line Items] |
|
| Number of units/shares granted |
116,111 |
| Performance Period |
3 years |
| Weighted-average grant date fair value of shares/units |
$ 194.51 |
| Time-Based Deferred Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Award [Line Items] |
|
| Number of units/shares granted |
136,574 |
| Weighted-average grant date fair value of shares/units |
$ 144.26 |
| Stock Options [Member] |
|
| Share-based Compensation Arrangement by Share-based Award [Line Items] |
|
| Number of stock options granted |
175,829 |
| Weighted-average exercise price of stock options granted, per option |
$ 144.09 |
| Estimated fair value of stock options granted, per option |
$ 37.19 |
| Restricted Stock [Member] |
|
| Share-based Compensation Arrangement by Share-based Award [Line Items] |
|
| Number of units/shares granted |
19,691 |
| Weighted-average grant date fair value of shares/units |
$ 144.09 |