| Schedule of earnings per share |
| | | | | | | | | | Three-Month Periods Ended March 31, | (Amounts in millions, except per share) | 2015 | | 2014 | Net income | $ | 718.9 |
| | $ | 279.7 |
| Weighted-average shares: | | | | Basic | 798.9 |
| | 811.5 |
| Effect of dilutive securities: | | | | Options, restricted stock units and other incentives | 35.2 |
| | 33.6 |
| Diluted | 834.1 |
| | 845.1 |
| Net income per share: | | | | Basic | $ | 0.90 |
| | $ | 0.34 |
| Diluted | $ | 0.86 |
| | $ | 0.33 |
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