Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended															12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Information [Abstract]
Revenues	$ 3,727		$ 3,877		$ 3,711		$ 3,596		$ 3,738		$ 3,820	$ 3,868		$ 3,837		$ 14,911	$ 15,263	$ 15,215
Gross profit	819		992		882		757		604		784	742		831		3,450	2,961
Net Income (Loss) Attributable to Weatherford	$ (475)	[1],[2]	$ 77	[1],[3]	$ (145)	[1],[4]	$ (41)	[1],[5]	$ (271)	[6],[7]	$ 22	$ (118)	[6],[8]	$ 22	[6],[9]	$ (584)	$ (345)	$ (778)
Basic Earnings (Loss) Per Share (in dollars per share)	$ (0.61)		$ 0.10		$ (0.19)		$ (0.05)		$ (0.35)		$ 0.03	$ (0.15)		$ 0.03		$ (0.75)	$ (0.45)	$ (1.02)
Diluted Earnings (Loss) Per Share (in dollars per share)	$ (0.61)		$ 0.10		$ (0.19)		$ (0.05)		$ (0.35)		$ 0.03	$ (0.15)		$ 0.03		$ (0.75)	$ (0.45)	$ (1.02)

[1] Includes estimated project losses of $26 million, $2 million, $10 million and $34 million for the first, second, third and fourth quarter of 2014, respectively. These charges were related to our long-term early production facility construction contracts in Iraq accounted for under the percentage of completion method.

[2] Includes a long-lived asset impairment charge of $352 million, a goodwill impairment charge of $40 million, a $245 million charge related to adopting the SICAD II exchange rate, a gain of $311 million primarily related to the sale of our engineered chemistry and Integrity drilling fluids businesses and the disposal of all of our shares in Proserv. This also includes restructuring charges of $58 million associated with our 2015 plan.

[3] Includes restructuring charges of $154 million and a gain of $38 million primarily related to the sale of our pipeline and specialty services business and land drilling and workover rigs in Russia and Venezuela.

[4] Includes restructuring charges of $59 million, and long-lived assets and goodwill impairment charges of $143 million and $125 million, respectively.

[5] Includes restructuring charges of $70 million.

[6] Includes estimated project gain of $7 million for the first quarter, estimated project loss of $6 million, $85 million and $148 million for the second, third and fourth quarter of 2013, respectively. These charges were related to our long-term early production facility construction contracts in Iraq accounted for under the percentage of completion method.

[7] Includes our recognition of a $58 million loss upon settlement of $127 million in outstanding receivables due from PDVSA.

[8] Includes a $153 million accrual related to the U.S. government investigations.

[9] Effective February 13, 2013, the Venezuelan government devalued its currency and the official exchange rate moved from 4.30 per dollar to 6.30 per dollar for all goods and services. We recognized a charge of approximately $100 million for the remeasurement of our net monetary assets denominated in the Venezuelan bolivar at the date of the devaluation.