Revenue

6 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Revenue

4.  Revenue

Revenue from contracts with customers on a disaggregated basis was as follows (in $ millions):

	Exploration and Production												Midstream		Eliminations			Total
	United States			Denmark		Libya		Malaysia & JDA		E&P Total
Three Months Ended June 30, 2019
Sales of our net production volumes:
Crude oil revenue	$	762		$	51	$	130	$	24	$	967		$	—	$	—		$	967
Natural gas liquids revenue		48			—		—		—		48			—		—			48
Natural gas revenue		33			2		6		154		195			—		—			195
Sales of purchased oil and gas		439			—		22		—		461			—		—			461
Intercompany revenue		—			—		—		—		—			190		(190	)		—
Total revenues from contracts with customers		1,282			53		158		178		1,671			190		(190	)		1,671
Other operating revenues (a)		(11	)		—		—		—		(11	)		—		—			(11	)
Total sales and other operating revenues	$	1,271		$	53	$	158	$	178	$	1,660		$	190	$	(190	)	$	1,660
Three Months Ended June 30, 2018
Sales of our net production volumes:
Crude oil revenue	$	692		$	19	$	110	$	28	$	849		$	—	$	—		$	849
Natural gas liquids revenue		75			—		—		—		75			—		—			75
Natural gas revenue		37			2		7		165		211			—		—			211
Sales of purchased oil and gas		424			—		22		—		446			—		—			446
Intercompany revenue		—			—		—		—		—			176		(176	)		—
Total revenues from contracts with customers		1,228			21		139		193		1,581			176		(176	)		1,581
Other operating revenues (a)		(47	)		—		—		—		(47	)		—		—			(47	)
Total sales and other operating revenues	$	1,181		$	21	$	139	$	193	$	1,534		$	176	$	(176	)	$	1,534

(a) Includes gains (losses) on commodity derivatives.

	Exploration and Production												Midstream		Eliminations			Total
	United States			Denmark		Libya		Malaysia & JDA		E&P Total
Six Months Ended June 30, 2019
Sales of our net production volumes:
Crude oil revenue	$	1,444		$	67	$	221	$	45	$	1,777		$	—	$	—		$	1,777
Natural gas liquids revenue		116			—		—		—		116			—		—			116
Natural gas revenue		75			5		12		334		426			—		—			426
Sales of purchased oil and gas		865			—		44		—		909			—		—			909
Intercompany revenue		—			—		—		—		—			380		(380	)		—
Total revenues from contracts with customers		2,500			72		277		379		3,228			380		(380	)		3,228
Other operating revenues (a)		4			—		—		—		4			—		—			4
Total sales and other operating revenues	$	2,504		$	72	$	277	$	379	$	3,232		$	380	$	(380	)	$	3,232
Six Months Ended June 30, 2018
Sales of our net production volumes:
Crude oil revenue	$	1,285		$	52	$	209	$	71	$	1,617		$	—	$	—		$	1,617
Natural gas liquids revenue		146			—		—		—		146			—		—			146
Natural gas revenue		76			5		15		293		389			—		—			389
Sales of purchased oil and gas		749			—		46		14		809			—		—			809
Intercompany revenue		—			—		—		—		—			343		(343	)		—
Total revenues from contracts with customers		2,256			57		270		378		2,961			343		(343	)		2,961
Other operating revenues (a)		(81	)		—		—		—		(81	)		—		—			(81	)
Total sales and other operating revenues	$	2,175		$	57	$	270	$	378	$	2,880		$	343	$	(343	)	$	2,880

(a) Includes gains (losses) on commodity derivatives.

There have been no significant changes to contracts with customers or composition thereof during the six months ended June 30, 2019.  Generally, we receive payments from customers on a monthly basis, shortly after the physical delivery of the crude oil, NGLs, or natural gas.  We did not recognize any credit losses on receivables with customers during the first six months of 2019 nor 2018.