Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Total	$ 4,438	$ 4,986	$ 4,256
Costs and Expenses
Production Expense	1,137	1,197	1,141
Exploration Expense	202	129	188
Depreciation, Depletion and Amortization	2,197	1,934	2,053
General and Administrative	416	385	415
Cost of Purchased Oil and Gas	431	296	0
Gain on Divestitures, Net	0	(843)	(326)
Asset Impairments	1,160	206	70
Goodwill Impairment	0	1,281	0
Loss on Marcellus Shale Upstream Divestiture and Other	0	0	2,379
Other Operating Expense, Net	214	50	138
Total	5,757	4,635	6,058
Operating (Loss) Income	(1,319)	351	(1,802)
Other Expense
Loss (Gain) on Commodity Derivative Instruments	143	(63)	(63)
Loss on Extinguishment of Debt or Facility	44	8	98
Interest, Net of Amount Capitalized	260	282	354
Other Non-Operating Expense (Income), Net	10	(16)	0
Total	457	211	389
(Loss) Income Before Income Taxes	(1,776)	140	(2,191)
Income Tax (Benefit) Expense	(343)	126	(1,141)
Net (Loss) Income and Comprehensive (Loss) Income Including Noncontrolling Interests	(1,433)	14	(1,050)
Less: Net Income and Comprehensive Income Attributable to Noncontrolling Interests	79	80	68
Net Loss and Comprehensive Loss Attributable to Noble Energy	$ (1,512)	$ (66)	$ (1,118)
Loss Attributable to Noble Energy per Common Share
Basic and Diluted (in usd per share)	$ (3.16)	$ (0.14)	$ (2.38)
Weighted Average Number of Shares Outstanding
Basic and Diluted (in shares)	478	483	469
Oil, NGL and Gas Sales
Revenues
Total	$ 3,904	$ 4,461	$ 4,060
Sales of Purchased Oil and Gas
Revenues
Total	389	275	0
Costs and Expenses
Cost of Purchased Oil and Gas	85	108	0
Other Revenue
Revenues
Total	$ 145	$ 250	$ 196