Six months ended

For the years ended December 31,

In millions

June 30, 2013

2012

2011

2010

2009

2008

Earnings

Earnings before income taxes and noncontrolling interests

$

1,044

$

2,271

$

2,671

$

1,617

$

640

$

1,178

Add

Fixed charges

51

104

106

95

87

99

Amortization of capitalized interest

1

2

2

3

5

3

Distributed income of equity investees

120

329

341

178

215

186

Less

Equity in earnings of investees

171

347

375

321

196

231

Capitalized interest

3

7

4

5

6

11

Earnings before fixed charges

$

1,042

$

2,352

$

2,741

$

1,567

$

745

$

1,224

Fixed charges

Interest expense

14

$

32

$

44

$

40

$

35

$

42

Capitalized interest

3

7

4

5

6

11

Amortization of debt discount

5

6

2

1

2

2

Interest portion of rental expense (1)

29

59

56

49

44

44

Total fixed charges

$

51

$

104

$

106

$

95

$

87

$

99

Ratio of earnings to fixed charges

20.4

22.6

25.9

16.5

8.6

12.4

(1)

Amounts represent those portions of rent expense that are reasonable approximations of interest costs.

We did not have any preferred stock or preference stock outstanding and we did not pay or accrue any preferred stock or preference stock dividends during the periods presented above. Accordingly, our ratios of earnings to combined fixed charges and preference stock dividends are the same as those presented in the table of ratios of earnings to fixed charges set forth above for each of the respective periods presented.