Supplemental cash flow information (Tables)

3 Months Ended

Mar. 31, 2017

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

A summary of supplemental cash flow information is presented in the following table (in millions).

	First Quarter
	2017		2016
Cash paid during the period for:
Income taxes		$    26		$    231
Interest:
Insurance and other businesses		306		181
Railroad, utilities and energy businesses		737		731
Finance and financial products businesses		78		63
Non-cash investing and financing activities:
Liabilities assumed in connection with business acquisitions		142		16,842
Equity securities exchanged in connection with business acquisition		—		4,239