Supplemental cash flow information (Tables)

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

A summary of supplemental cash flow information for the first six months of 2015 and 2014 is presented in the following table (in millions).

	First Six Months
	2015		2014
Cash paid during the period for:
Income taxes	$	1,128	$	2,151
Interest:
Insurance and other businesses		185		181
Railroad, utilities and energy businesses		1,319		1,209
Finance and financial products businesses		215		237
Non-cash investing and financing activities:
Equity securities exchanged in connection with business acquisitions		—		2,478
Liabilities assumed in connection with business acquisitions		2,478		1,038
Treasury stock acquired in connection with business acquisition		—		400