Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Revenue from Sales	$ 1,020	$ 1,052
Total	1,020	1,052
Costs and Expenses
Production Expense	276	305
Exploration Expense	1,504	24
Depreciation, Depletion and Amortization	492	508
General and Administrative	85	102
Asset Impairments	2,703	0
Goodwill impairment	110	0
Other Operating Expense, Net	44	117
Total	5,353	1,143
Operating Expense	(4,333)	(91)
Other (Income) Expense
(Gain) Loss on Commodity Derivative Instruments	(389)	212
Interest, Net of Amount Capitalized	81	66
Other Non-Operating (Income) Expense , Net	(7)	4
Total	(315)	282
Loss Before Income Taxes	(4,018)	(373)
Income Tax Benefit	(11)	(84)
Net Loss and Comprehensive Loss Including Noncontrolling Interests	(4,007)	(289)
Less: Net (Loss) Income and Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(44)	24
Net Loss and Comprehensive Loss Attributable to Noble Energy	$ (3,963)	$ (313)
Net Loss Attributable to Noble Energy Common Shareholders per Share
Basic and Diluted ($ per share)	$ (8.27)	$ (0.65)
Weighted Average Number of Common Shares Outstanding
Basic and Diluted (in shares)	479	478
Oil, NGL and Gas Sales
Revenues
Revenue from Sales	$ 894	$ 937
Sales of Purchased Oil and Gas
Revenues
Revenue from Sales	125	74
Costs and Expenses
Cost of Purchased Oil and Gas	139	87
Other Revenue
Revenues
Revenue from Sales	$ 1	$ 41