Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Revenue from Sales	$ 1,052	$ 1,286
Total	1,052	1,286
Costs and Expenses
Production Expense	305	319
Depreciation, Depletion and Amortization	508	468
General and Administrative	102	104
Other Operating Expense, Net	49	50
Gain on Divestitures, Net	0	(588)
Asset Impairments	0	168
Firm Transportation Exit Cost	92	0
Total	1,143	578
Operating (Expense) Income	(91)	708
Other Expense
Loss on Commodity Derivative Instruments	212	79
Interest, Net of Amount Capitalized	66	73
Other Non-Operating Expense, Net	4	13
Total	282	165
(Loss) Income Before Income Taxes	(373)	543
Income Tax Benefit	(84)	(31)
Net (Loss) Income and Comprehensive (Loss) Income Including Noncontrolling Interests	(289)	574
Less: Net Income and Comprehensive Income Attributable to Noncontrolling Interests	24	20
Net (Loss) Income and Comprehensive (Loss) Income Attributable to Noble Energy	$ (313)	$ 554
Net (Loss) Income Attributable to Noble Energy Common Shareholders per Share
Basic ($ per share)	$ (0.65)	$ 1.14
Diluted ($ per share)	$ (0.65)	$ 1.14
Weighted Average Number of Common Shares Outstanding
Basic (in shares)	478	487
Diluted (in shares)	478	488
Oil, NGL and Gas Sales
Revenues
Revenue from Sales	$ 937	$ 1,173
Sales of Purchased Oil and Gas
Revenues
Revenue from Sales	74	53
Costs and Expenses
Costs and Expenses	87	57
Other Revenue
Revenues
Revenue from Sales	$ 41	$ 60