| 2017 | 2016 | 2015 | 2014 | 2013 | |||||||||||||||
Earnings: | |||||||||||||||||||
| Income before income taxes | $ | 3,487 | $ | 3,738 | $ | 2,763 | $ | 3,533 | $ | 3,565 | |||||||||
| Add: | |||||||||||||||||||
| Fixed charges | 226 | 229 | 216 | 212 | 196 | ||||||||||||||
| Less: | |||||||||||||||||||
| Income from equity investees | (11 | ) | (10 | ) | (8 | ) | (7 | ) | (5 | ) | |||||||||
| Capitalized interest | (3 | ) | (6 | ) | (6 | ) | (4 | ) | (3 | ) | |||||||||
| Income as adjusted | $ | 3,699 | $ | 3,951 | $ | 2,965 | $ | 3,734 | $ | 3,753 | |||||||||
| Fixed Charges: | |||||||||||||||||||
Interest on indebtedness and amortization of debt expense discount or premium | $ | 153 | $ | 149 | $ | 133 | $ | 130 | $ | 116 | |||||||||
| Rents of one-third representative of interest factor | 70 | 74 | 77 | 78 | 77 | ||||||||||||||
| Capitalized interest | 3 | 6 | 6 | 4 | 3 | ||||||||||||||
| Total fixed charges | $ | 226 | $ | 229 | $ | 216 | $ | 212 | $ | 196 | |||||||||
| Ratio of earnings to fixed charges | 16.4 | 17.3 | 13.7 | 17.6 | 19.1 | ||||||||||||||
