Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

The following table provides supplemental disclosure of cash flow information (in millions): 

	Six Months Ended June 30,
	2021		2020
Cash paid during the period for interest on debt, net of amounts capitalized	$	675	$	750
Cash paid for income taxes, net of refunds	1		1