|
Share-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended |
|---|---|
|
Mar. 31, 2013
|
|
| Number of stock options granted | 18.4 |
| Number of restricted share units granted | 5.2 |
| Weighted average fair value of stock options granted | $ 8.8 |
| Fair value of restricted share units granted | $ 37.85 |
|
Stock Options [Member]
|
|
| Unrecognized pretax compensation expense on nonvested awards | $ 418 |
|
Restricted Share Units [Member]
|
|
| Unrecognized pretax compensation expense on nonvested awards | $ 480 |