Revenue

3 Months Ended

Mar. 31, 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 March 31, 2019
Sales of our net production volumes:
Crude oil revenue	$	682		$	16	$	91	$	21	$	810		$	—	$	—		$	810
Natural gas liquids revenue		68			—		—		—		68			—		—			68
Natural gas revenue		42			3		6		180		231			—		—			231
Sales of purchased oil and gas		426			—		22		—		448			—		—			448
Intercompany revenue		—			—		—		—		—			190		(190	)		—
Total revenues from contracts with customers		1,218			19		119		201		1,557			190		(190	)		1,557
Other operating revenues (a)		15			—		—		—		15			—		—			15
Total sales and other operating revenues	$	1,233		$	19	$	119	$	201	$	1,572		$	190	$	(190	)	$	1,572
Three Months Ended March 31, 2018
Sales of our net production volumes:
Crude oil revenue	$	593		$	33	$	99	$	43	$	768		$	—	$	—		$	768
Natural gas liquids revenue		71			—		—		—		71			—		—			71
Natural gas revenue		39			3		8		128		178			—		—			178
Sales of purchased oil and gas		325			—		24		14		363			—		—			363
Intercompany revenue		—			—		—		—		—			167		(167	)		—
Total revenues from contracts with customers		1,028			36		131		185		1,380			167		(167	)		1,380
Other operating revenues (a)		(34	)		—		—		—		(34	)		—		—			(34	)
Total sales and other operating revenues	$	994		$	36	$	131	$	185	$	1,346		$	167	$	(167	)	$	1,346

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

There have been no significant changes to contracts with customers or composition thereof during the first quarter of 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 in the first quarter of 2019 or 2018.