Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]
Revenues	$ 1,402	$ 2,390	$ 2,987	$ 5,184
Costs and Expenses	(1,862)	(2,854)	(3,894)	(5,598)
Operating Income (Loss)	(460)	(464)	(907)	(414)
Other Income (Expense):
Interest Expense, Net	(119)	(117)	(234)	(237)
Intercompany Charges, Net	0	0	0	0
Equity in Subsidiary Income	0	0	0	0
Other, Net	(85)	(34)	(115)	(71)
Loss Before Income Taxes	(664)	(615)	(1,256)	(722)	$ (1,260)
(Provision) Benefit for Income Taxes	102	132	203	132
Net Loss	(562)	(483)	(1,053)	(590)
Noncontrolling Interests	3	6	10	17
Net Income (Loss) Attributable to Weatherford	(565)	(489)	(1,063)	(607)
Comprehensive Income (Loss) Attributable to Weatherford	(574)	(375)	(929)	(816)
Weatherford Ireland [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	(81)	(100)	(147)	(107)
Operating Income (Loss)	(81)	(100)	(147)	(107)
Other Income (Expense):
Interest Expense, Net	0	0	0	0
Intercompany Charges, Net	13	(26)	12	(26)
Equity in Subsidiary Income	(497)	(363)	(928)	(474)
Other, Net	0	0	0	0
Loss Before Income Taxes	(565)	(489)	(1,063)	(607)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(565)	(489)	(1,063)	(607)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(565)	(489)	(1,063)	(607)
Comprehensive Income (Loss) Attributable to Weatherford	(574)	(375)	(929)	(816)
Weatherford Bermuda [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	(4)	0	(4)
Operating Income (Loss)	0	(4)	0	(4)
Other Income (Expense):
Interest Expense, Net	(106)	(98)	(204)	(202)
Intercompany Charges, Net	5	(28)	(41)	(43)
Equity in Subsidiary Income	28	366	(260)	441
Other, Net	(73)	1	(86)	(19)
Loss Before Income Taxes	(146)	237	(591)	173
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(146)	237	(591)	173
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(146)	237	(591)	173
Comprehensive Income (Loss) Attributable to Weatherford	(188)	263	(640)	107
Weatherford Delaware [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	5	0	5	0
Operating Income (Loss)	5	0	5	0
Other Income (Expense):
Interest Expense, Net	(12)	(15)	(26)	(28)
Intercompany Charges, Net	(45)	(68)	(46)	(68)
Equity in Subsidiary Income	47	874	(188)	849
Other, Net	(27)	0	(27)	0
Loss Before Income Taxes	(32)	791	(282)	753
(Provision) Benefit for Income Taxes	19	29	24	34
Net Loss	(13)	820	(258)	787
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(13)	820	(258)	787
Comprehensive Income (Loss) Attributable to Weatherford	(40)	843	(286)	774
Other Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	1,402	2,390	2,987	5,184
Costs and Expenses	(1,786)	(2,750)	(3,752)	(5,487)
Operating Income (Loss)	(384)	(360)	(765)	(303)
Other Income (Expense):
Interest Expense, Net	(4)	(4)	(7)	(7)
Intercompany Charges, Net	27	122	(265)	137
Equity in Subsidiary Income	0	0	0	0
Other, Net	5	(35)	(12)	(52)
Loss Before Income Taxes	(356)	(277)	(1,049)	(225)
(Provision) Benefit for Income Taxes	83	103	179	98
Net Loss	(273)	(174)	(870)	(127)
Noncontrolling Interests	3	6	10	17
Net Income (Loss) Attributable to Weatherford	(276)	(180)	(880)	(144)
Comprehensive Income (Loss) Attributable to Weatherford	(285)	(66)	(746)	(352)
Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	0	0	0
Operating Income (Loss)	0	0	0	0
Other Income (Expense):
Interest Expense, Net	3	0	3	0
Intercompany Charges, Net	0	0	(340)	0
Equity in Subsidiary Income	422	(877)	1,376	(816)
Other, Net	10	0	10	0
Loss Before Income Taxes	435	(877)	1,729	(816)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	435	(877)	1,729	(816)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	435	(877)	1,729	(816)
Comprehensive Income (Loss) Attributable to Weatherford	$ 513	$ (1,040)	$ 1,672	$ (529)