Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of materials and supplies and commodity inventories

The components of inventories are as follows:

	As of December 31,
	2020		2019
	(in millions)
Materials and supplies (a)	$	75	$	75
Commodities	149		130
Total inventories	$	224	$	205

____________________

(a)As of December 31, 2020 and 2019, the Company's materials and supplies inventories were net of valuation allowances of $1 million and $2 million, respectively.

Schedule of other property and equipment, net

Other property and equipment, net. Other property and equipment is recorded at cost. The carrying values of other property and equipment, net of accumulated depreciation of $463 million and $382 million as of December 31, 2020 and 2019, respectively, are as follows:

	As of December 31,
	2020		2019
	(in millions)
Land and buildings (a)	$	849	$	877
Water infrastructure (b)	414		404
Construction-in-progress and capitalized interest (c)	174		152
Information technology	71		120
Transport and field equipment (d)	34		35
Furniture and fixtures	27		28
Sand reserves (e)	15		16
Total other property and equipment, net	$	1,584	$	1,632

____________________

(a)Includes land, buildings, any related improvements to land and buildings, and a finance lease entered into by the Company for its corporate headquarters in Irving, Texas. See Note 10 for additional information.

(b)Includes costs for pipeline infrastructure and water supply wells.

(c)Includes capitalized costs and capitalized interest on other property and equipment not yet placed in service.

(d)Includes vehicles and well servicing equipment, including pulling units, fracture stimulation tanks, water transport trucks, hot oilers, construction equipment and fishing tools, that are used on Company-operated properties.

(e)Includes sand mines and unproved leaseholds that provide the Company with proppant for use in the fracture stimulation of oil and gas wells.

Schedule of Error Corrections and Prior Period Adjustments

Consolidated balance sheet (in millions):

	December 31, 2019
	As Reported		Revisions		As Revised
ASSETS
Derivatives	$	—	$	21	$	21
Total assets	$	19,067	$	21	$	19,088
LIABILITIES AND EQUITY
Deferred income taxes	$	1,389	$	4	$	1,393
Retained earnings	$	4,025	$	17	$	4,042
Total equity	$	12,119	$	17	$	12,136
Total liabilities and equity	$	19,067	$	21	$	19,088

Consolidated statement of operations (in millions, except per share data):

	December 31, 2019
	As Reported		Revisions		As Revised
Derivative gain, net	$	34	$	21	$	55
Income before income taxes	$	987	$	21	$	1,008
Income tax provision	$	(231)	$	(4)	$	(235)
Net income	$	756	$	17	$	773
Net income attributable to common stockholders	$	756	$	17	$	773
Net income per share attributable to common stockholders:
Basic	$	4.50	$	0.10	$	4.60
Diluted	$	4.50	$	0.09	$	4.59