Supplemental cash flow information

3 Months Ended

Mar. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Supplemental cash flow information

Note 20. Supplemental cash flow information

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

	First Quarter
	2021		2020
Cash paid during the period for:
Income taxes	$	256	$	595
Interest:
Insurance and other		400		409
Railroad, utilities and energy		740		742