Supplemental cash flow information (Tables)

9 Months Ended

Sep. 30, 2022

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 Nine Months
	2022		2021
Cash paid during the period for:
Income taxes	$	3,474	$	4,002
Interest:
Insurance and other		917		1,040
Railroad, utilities and energy		2,323		2,335