Supplemental cash flow information (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of supplemental cash flow information

A summary of supplemental cash flow information for the first six months of 2014 and 2013 is presented in the following table (in millions).

	First Six Months
	2014		2013
Cash paid during the period for:
Income taxes	$	2,151	$	2,724
Interest:
Insurance and other businesses		181		161
Railroad, utilities and energy businesses		1,209		918
Finance and financial products businesses		237		301
Investments in equity securities exchanged in connection with business acquisitions		2,478		—
Liabilities assumed in connection with business acquisitions		1,038		4
Treasury stock acquired in connection with business acquisition		400		—