|
Earnings Per Share - Textual (Detail)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Earnings Per Share [Abstract] | |||
| Period for which awards under employee stock option are vested | 3 years | ||
| Common shares issuable under share-based compensation plans excluded from diluted earnings per common share because the effect would have been antidilutive | 25 | 104 | 169 |