|
Share-Based Compensation - Summary of Activity Under Share-Based Compensation Plans (Parenthetical) (Detail)
In Millions, unless otherwise specified |
Sep. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
|
Market condition awards [Member]
|
||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Outstanding SARs | 1.5 | 1.5 |
| Exercisable SARs | 1.5 | |
|
Market and performance condition awards [Member]
|
||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Outstanding SARs | 0.9 | 0.9 |
| X | ||||||||||
|
- Definition
The number of exercisable stock appreciation rights (SARs). No definition available.
|
| X | ||||||||||
|
- Definition
The number of outstanding stock appreciation rights (SARs). No definition available.
|
| X | ||||||||||
|
- Details
|