Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

The following table shows revenue disaggregated by operating area and product type, for the years ended December 31, 2020, 2019 and 2018:


	Year Ended December 31, 2020
	Oil		Natural Gas		NGL		Total
	($ in millions)
Marcellus	$	—	$	631	$	—	$	631
Haynesville	—		362		—		362
Eagle Ford	717		113		84		914
Brazos Valley	485		16		13		514
Powder River Basin	170		41		20		231
Mid-Continent	55		25		13		93
Revenue from contracts with customers	1,427		1,188		130		2,745
Gains on oil, natural gas and NGL derivatives	554		42		—		596
Oil, natural gas and NGL revenue	$	1,981	$	1,230	$	130	$	3,341

Marketing revenue from contracts with customers	$	1,195	$	494	$	110	$	1,799
Other marketing revenue	67		3		—		70
Marketing revenue	$	1,262	$	497	$	110	$	1,869

	Year Ended December 31, 2019
	Oil		Natural Gas		NGL		Total
	($ in millions)
Marcellus	$	—	$	856	$	—	$	856
Haynesville	—		620		—		620
Eagle Ford	1,289		153		119		1,561
Brazos Valley	721		32		16		769
Powder River Basin	369		77		32		478
Mid-Continent	164		44		25		233
Revenue from contracts with customers	2,543		1,782		192		4,517
Gains (losses) on oil, natural gas and NGL derivatives	(212)		217		—		5
Oil, natural gas and NGL revenue	$	2,331	$	1,999	$	192	$	4,522

Marketing revenue from contracts with customers	$	2,473	$	900	$	246	$	3,619
Other marketing revenue	311		41		—		352
Losses on marketing derivatives	—		(4)		—		(4)
Marketing revenue	$	2,784	$	937	$	246	$	3,967


	Year Ended December 31, 2018
	Oil		Natural Gas		NGL		Total
	($ in millions)
Marcellus	$	—	$	924	$	—	$	924
Haynesville	2		836		—		838
Eagle Ford	1,514		173		185		1,872
Powder River Basin	244		68		38		350
Mid-Continent	246		84		55		385
Utica	195		401		224		820
Revenue from contracts with customers	2,201		2,486		502		5,189
Gains (losses) on oil, natural gas and NGL derivatives	124		(147)		(11)		(34)
Oil, natural gas and NGL revenue	$	2,325	$	2,339	$	491	$	5,155

Marketing revenue from contracts with customers	$	2,740	$	1,194	$	456	$	4,390
Other marketing revenue	457		222		—		679
Gains on marketing derivatives	—		7		—		7
Marketing revenue	$	3,197	$	1,423	$	456	$	5,076

Accounts receivable as of December 31, 2020 and 2019 are detailed below:


	December 31,
	2020		2019
	($ in millions)
Oil, natural gas and NGL sales	$	589	$	737
Joint interest billings	119		200
Other	68		74
Allowance for doubtful accounts	(30)		(21)
Total accounts receivable, net	$	746	$	990