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Supplemental cash flow information
12 Months Ended
Dec. 31, 2011
Supplemental cash flow information
(12) Supplemental cash flow information

A summary of supplemental cash flow information for each of the three years ending December 31, 2011 is presented in the following table (in millions).

 

     2011      2010      2009  

Cash paid during the period for:

        

Income taxes

   $ 2,885       $ 3,547       $ 2,032   

Interest:

        

Insurance and other businesses

     243         185         145   

Railroad, utilities and energy businesses

     1,821         1,667         1,142   

Finance and financial products businesses

     662         708         615   

Non-cash investing and financing activities:

        

Liabilities assumed in connection with acquisitions

     5,836         31,406         278   

Common stock issued in connection with acquisition of BNSF

     —           10,577         —     

Common stock issued in connection with acquisition of noncontrolling interests in Wesco Financial Corporation

     245         —