Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Revenue from sales	$ 571	$ 1,093	$ 1,591	$ 2,145
Total	571	1,093	1,591	2,145
Costs and Expenses
Production Expense	214	260	490	565
Exploration Expense	15	33	1,519	57
Depreciation, Depletion and Amortization	320	528	812	1,036
General and Administrative	63	105	148	207
Asset Impairments	51	0	2,754	0
Goodwill Impairment	0	0	110	0
Other Operating Expense, Net	73	22	117	139
Total	799	1,061	6,152	2,204
Operating (Loss) Income	(228)	32	(4,561)	(59)
Other Expense (Income)
Loss (Gain) on Commodity Derivative Instruments	158	(60)	(231)	152
Interest, Net of Amount Capitalized	87	63	168	129
Other Non-Operating Expense (Income), Net	3	1	(4)	5
Total	248	4	(67)	286
(Loss) Income Before Income Taxes	(476)	28	(4,494)	(345)
Income Tax (Benefit) Expense	(89)	20	(100)	(64)
Net (Loss) Income and Comprehensive (Loss) Income Including Noncontrolling Interests	(387)	8	(4,394)	(281)
Less: Net Income (Loss) and Comprehensive Income (Loss) Attributable to Noncontrolling Interests	21	18	(23)	42
Net Loss and Comprehensive Loss Attributable to Noble Energy	$ (408)	$ (10)	$ (4,371)	$ (323)
Net Loss Attributable to Noble Energy Common Shareholders per Share
Basic and Diluted ($ per share)	$ (0.85)	$ (0.02)	$ (9.11)	$ (0.68)
Weighted Average Number of Common Shares Outstanding
Basic and Diluted (in shares)	479	478	480	478
Oil, NGL and Gas Sales
Revenues
Revenue from sales	$ 493	$ 954	$ 1,387	$ 1,891
Sales of Purchased Oil and Gas
Revenues
Revenue from sales	49	103	174	177
Costs and Expenses
Cost of Purchased Oil and Gas	63	113	202	200
Other Revenue
Revenues
Revenue from sales	$ 29	$ 36	$ 30	$ 77