Supplemental cash flow information (Tables)

3 Months Ended

Mar. 31, 2023

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
	2023		2022
Cash paid during the period for:
Income taxes	$	312	$	336
Interest:
Insurance and other		491		365
Railroad, utilities and energy		799		708
Non-cash investing and financing activities:
Liabilities assumed in connection with business acquisitions		10,747		9