CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Revenue	$ 807	$ 1,314	$ 2,843	$ 3,969
Costs and Expenses:
Research and Development	21	35	77	107
Selling, General and Administrative	180	232	651	710
Long-lived Asset Impairments	0	0	818	20
Goodwill Impairment	0	399	239	730
Inventory Charges	0	0	134	0
Restructuring, Facility and Severance	31	53	114	93
Prepetition Charges	0	0	0	86
Gain (Loss) on Disposition of Assets	(12)	(15)	(12)	(15)
(Gain) Loss on Sale of Businesses, Net	0	8	0	(104)
Total Costs and Expenses	867	1,761	4,222	4,835
Operating Income (Loss)	(60)	(447)	(1,379)	(866)
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations		133		133
Nonoperating Income (Expense) [Abstract]
Interest Expense, Net (Unrecognized Contractual Interest Expense was $133 million for three and nine months ended September 30, 2019)	(79)	(26)	(196)	(341)
Reorganization Items	0	(303)	(9)	(303)
Other Expense, Net	(20)	(8)	(56)	(18)
Loss Before Income Taxes	(159)	(784)	(1,640)	(1,528)
Income Tax Provision	(8)	(31)	(64)	(76)
Net Loss	(167)	(815)	(1,704)	(1,604)
Net Income Attributable to Noncontrolling Interests	7	6	17	14
Net Income (Loss) Attributable to Weatherford	$ (174)	$ (821)	$ (1,721)	$ (1,618)
Earnings Per Share, Basic and Diluted [Abstract]
Loss Per Share, Basic & Diluted (in dollars per share)	$ (2.48)	$ (0.82)	$ (24.58)	$ (1.61)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted Average Shares Outstanding, Basic and Diluted (in shares)	70	1,004	70	1,004
Other Cost and Expense, Operating	$ 16	$ 42	$ 48	$ 100
Products
Revenues:
Revenue	322	467	1,081	1,461
Costs and Expenses:
Cost of Goods and Services Sold	290	408	935	1,343
Services
Revenues:
Revenue	485	847	1,762	2,508
Costs and Expenses:
Cost of Goods and Services Sold	$ 341	$ 599	$ 1,218	$ 1,765