CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2017	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Loss	$ (815)	$ (194)		$ (1,604)	$ (695)
Other Comprehensive Income (Loss), Net of Tax:
Currency Translation Adjustments	(28)	(9)		35	(170)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	0	0		0	(1)
Other Comprehensive Income, Other, Net of Tax	8		$ 0	8		$ 0
Other Comprehensive Income (Loss)	(20)	(9)		43	(169)
Comprehensive Loss	(835)	(203)		(1,561)	(864)
Comprehensive Income Attributable to Noncontrolling Interests	6	5		14	13
Comprehensive Loss Attributable to Weatherford	$ (841)	$ (208)		$ (1,575)	$ (877)