Supplemental cash flow information (Tables)

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

Supplemental cash flow information follows (in millions).

	First Quarter
	2018		2017
Cash paid during the period for:
Income taxes	$	289	$	26
Interest:
Insurance and other businesses		338		306
Railroad, utilities and energy businesses		747		737
Finance and financial products businesses		83		78
Non-cash investing and financing activities:
Liabilities assumed in connection with business acquisitions		4		142