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Earnings Per Share - Reconciliation of the Earnings (Losses) and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
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Mar. 31, 2014
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|
| Computation of Basic Earnings Per Share | ||
| Net income | $ 207 | $ 172 |
| Weighted average shares outstanding | 277.7 | 296.1 |
| Basic earnings per share (in USD per share) | $ 0.75 | $ 0.58 |
| Computation of Diluted Earnings Per Share | ||
| Net income | $ 207 | $ 172 |
| Weighted average shares outstanding | 277.7 | 296.1 |
| Effect of dilutive securities | ||
| Shares for diluted earnings per share | 283.5 | 303.3 |
| Diluted earnings per share (in USD per share) | $ 0.73 | $ 0.57 |
| Employee stock option and appreciation right plans | ||
| Effect of dilutive securities | ||
| Effect of dilutive securities | 2.4 | 3.4 |
| Deferred stock incentive plans | ||
| Effect of dilutive securities | ||
| Effect of dilutive securities | 0.7 | 0.8 |
| Restricted stock units | ||
| Effect of dilutive securities | ||
| Effect of dilutive securities | 2.7 | 3.0 |