| Nine months ended September 30, 2012 | ||||||||||||||||||||||||
| Years ended December 31, | ||||||||||||||||||||||||
| 2011 | 2010 | 2009 | 2008 | 2007 | ||||||||||||||||||||
| Earnings before income taxes | $4,375 | $5,393 | $4,507 | $1,731 | $3,995 | $6,118 | ||||||||||||||||||
| Fixed charges excluding capitalized interest | 456 | 677 | 726 | 564 | 492 | 557 | ||||||||||||||||||
| Amortization of previously capitalized interest | 49 | 64 | 60 | 61 | 50 | 58 | ||||||||||||||||||
| Net adjustment for earnings from affiliates | 61 | (38 | ) | (11 | ) | (10 | ) | (10 | ) | (28 | ) | |||||||||||||
| Earnings available for fixed charges | $4,941 | $6,096 | $5,282 | $2,346 | $4,527 | $6,705 | ||||||||||||||||||
| Fixed charges: | ||||||||||||||||||||||||
Interest and debt expense (1) | $415 | $626 | $676 | $514 | $425 | $491 | ||||||||||||||||||
| Interest capitalized during the period | 58 | 57 | 48 | 90 | 99 | 117 | ||||||||||||||||||
| Rentals deemed representative of an interest factor | 41 | 51 | 50 | 50 | 67 | 66 | ||||||||||||||||||
| Total fixed charges | $514 | $734 | $774 | $654 | $591 | $674 | ||||||||||||||||||
| Ratio of earnings to fixed charges | 9.6 | 8.3 | 6.8 | 3.6 | 7.7 | 9.9 | ||||||||||||||||||
(1) | Amount does not include tax-related interest expense which is reported as a component of Income tax expense in our Condensed Consolidated Statements of Comprehensive Income. |
