Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Income Statements, Captions [Line Items]
Revenues	$ 3,877	$ 3,820	$ 11,184	$ 11,525
Costs and Expenses	(3,559)	(3,581)	(10,711)	(10,952)
Operating Income (Loss)	318	239	473	573
Other Income (Expense):
Interest Expense, Net	(122)	(129)	(376)	(388)
Intercompany Charges, Net	0	0	0	0
Equity in Subsidiary Income	0	0	0	0
Other, Net	(9)	(30)	(37)	(161)
Income Before Income Taxes	187	80	60	24
(Provision) Benefit for Income Taxes	(98)	(49)	(136)	(74)
Net Income (Loss)	89	31	(76)	(50)
Net Income Attributable to Noncontrolling Interests	(12)	(9)	(33)	(24)
Net Income (Loss) Attributable to Weatherford	77	22	(109)	(74)
Comprehensive Income (Loss) Attributable to Weatherford	(130)	118	(352)	(300)
Weatherford Ireland [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0		0
Costs and Expenses	(6)		(34)
Operating Income (Loss)	(6)		(34)
Other Income (Expense):
Interest Expense, Net	0		0
Intercompany Charges, Net	(31)		(43)
Equity in Subsidiary Income	112		(32)
Other, Net	1		0
Income Before Income Taxes	76		(109)
(Provision) Benefit for Income Taxes	1		0
Net Income (Loss)	77		(109)
Net Income Attributable to Noncontrolling Interests	0		0
Net Income (Loss) Attributable to Weatherford	77		(109)
Comprehensive Income (Loss) Attributable to Weatherford	(130)		(352)
Weatherford Switzerland [Member]
Condensed Income Statements, Captions [Line Items]
Revenues		0		0
Costs and Expenses		(6)		(24)
Operating Income (Loss)		(6)		(24)
Other Income (Expense):
Interest Expense, Net		0		0
Intercompany Charges, Net		(2)		(27)
Equity in Subsidiary Income		31		(23)
Other, Net		(1)		0
Income Before Income Taxes		22		(74)
(Provision) Benefit for Income Taxes		0		0
Net Income (Loss)		22		(74)
Net Income Attributable to Noncontrolling Interests		0		0
Net Income (Loss) Attributable to Weatherford		22		(74)
Comprehensive Income (Loss) Attributable to Weatherford		118		(300)
Weatherford Bermuda [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	0	(1)	(122)
Operating Income (Loss)	0	0	(1)	(122)
Other Income (Expense):
Interest Expense, Net	(106)	(108)	(317)	(326)
Intercompany Charges, Net	5	12	7,331	25
Equity in Subsidiary Income	242	35	130	213
Other, Net	15	(26)	0	(16)
Income Before Income Taxes	156	(87)	7,143	(226)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Income (Loss)	156	(87)	7,143	(226)
Net Income Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	156	(87)	7,143	(226)
Comprehensive Income (Loss) Attributable to Weatherford	175	(10)	7,162	(406)
Weatherford Delaware [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	(1)	(1)	(2)
Operating Income (Loss)	0	(1)	(1)	(2)
Other Income (Expense):
Interest Expense, Net	(14)	(15)	(43)	(46)
Intercompany Charges, Net	(28)	(85)	(105)	(164)
Equity in Subsidiary Income	429	62	265	293
Other, Net	0	0	(1)	(1)
Income Before Income Taxes	387	(39)	115	80
(Provision) Benefit for Income Taxes	15	35	52	74
Net Income (Loss)	402	(4)	167	154
Net Income Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	402	(4)	167	154
Comprehensive Income (Loss) Attributable to Weatherford	450	73	215	38
Other Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	3,877	3,820	11,184	11,525
Costs and Expenses	(3,553)	(3,574)	(10,675)	(10,804)
Operating Income (Loss)	324	246	509	721
Other Income (Expense):
Interest Expense, Net	(2)	(6)	(16)	(16)
Intercompany Charges, Net	54	75	(9,003)	166
Equity in Subsidiary Income	(1)	0	(1)	0
Other, Net	(25)	(3)	(36)	(144)
Income Before Income Taxes	350	312	(8,547)	727
(Provision) Benefit for Income Taxes	(114)	(84)	(188)	(148)
Net Income (Loss)	236	228	(8,735)	579
Net Income Attributable to Noncontrolling Interests	(12)	(9)	(33)	(24)
Net Income (Loss) Attributable to Weatherford	224	219	(8,768)	555
Comprehensive Income (Loss) Attributable to Weatherford	161	314	(8,831)	328
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	0	0	0	0
Intercompany Charges, Net	0	0	1,820	0
Equity in Subsidiary Income	(782)	(128)	(362)	(483)
Other, Net	0	0	0	0
Income Before Income Taxes	(782)	(128)	1,458	(483)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Income (Loss)	(782)	(128)	1,458	(483)
Net Income Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(782)	(128)	1,458	(483)
Comprehensive Income (Loss) Attributable to Weatherford	$ (786)	$ (377)	$ 1,454	$ 40