Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2020

Related Party Transactions [Abstract]

Schedule of Related Party Transactions [Table Text Block]

Transactions and balances with ProPetro are as follows:

	Year Ended December 31,
	2020		2019
	(in millions)
Pressure pumping related services charges (a)	$	238	$	461

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(a)Includes $41 million and $16 million of idle frac fleet fees for the years ended December 31, 2020 and December 31, 2019, respectively. See Note 16 for additional information.

	As of December 31,
	2020		2019
	(in millions)
Accounts receivable - due from affiliate (a)	$	—	$	3
Accounts payable - due to affiliate (b)	$	45	$	88