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Long-term Debt Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions			3 Months Ended			9 Months Ended
	Jun. 17, 2016	May 04, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 10, 2016	Jun. 07, 2016	Feb. 29, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 2.0
Debt and Capital Lease Obligations			$ 7,119.0			$ 7,119.0					$ 6,253.0
Capital in Excess of Par Value			6,273.0			6,273.0					5,502.0
Long-term Debt			6,937.0			6,937.0					5,852.0
Current portion of long-term debt and term loan agreement			182.0			182.0					401.0
Bond Tender Premium, Net			0.0		$ 0.0	(78.0)	$ 0.0
Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations		$ 500.0	$ 483.0			$ 483.0
A&R Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal		$ 12.5
Senior Notes, 8.25 Percent due 2023 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			8.25%			8.25%
Senior Notes, 6.35% due 2017 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt								6.35%
Senior Notes, 6.00% due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt								6.00%
Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt								9.625%
Senior Notes, 5.125% due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt								5.125%
Exchangeable Senior Notes, 5.875 Percent due 2021 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			5.875%			5.875%
Senior Notes, 7.75 Percent due 2021 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			7.75%			7.75%
Exchangeable Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount									$ 1,265.0
Stated interest rate on debt									5.875%
Debt Instrument, Convertible, Conversion Price									$ 7.74
Debt Instrument, Convertible, Shares									163.4
Capital in Excess of Par Value			$ 97.0			$ 97.0
Long-term Debt			1,142.0			1,142.0
Debt Issuance Costs, Net			123.0			123.0
Debt Instrument, Interest Rate, Effective Percentage									8.40%
Interest Expense, Debt						30.0
Interest Expense, Debt, Excluding Amortization						24.0
Amortization of Debt Discount (Premium)						6.0
Senior Notes [Member] \| Senior Notes, 5.50% due 2016 [Member]
Debt Instrument [Line Items]
Current portion of long-term debt and term loan agreement										$ 350.0
Senior Notes [Member] \| Senior Notes, 4.50% due 2022 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			642.0			642.0					642.0
Senior Notes [Member] \| Senior Notes, 8.25 Percent due 2023 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations	$ 750.0		738.0			738.0					0.0
Senior Notes [Member] \| Senior Notes, 6.35% due 2017 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			89.0			89.0					604.0
Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			66.0			66.0					498.0
Senior Notes [Member] \| Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			490.0			490.0					1,012.0
Senior Notes [Member] \| Senior Notes, 5.125% due 2020 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			363.0			363.0					768.0
Senior Notes [Member] \| Exchangeable Senior Notes, 5.875 Percent due 2021 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			1,142.0			1,142.0					0.0
Senior Notes [Member] \| Senior Notes, 7.75 Percent due 2021 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations	750.0		738.0			738.0					0.0
Senior Notes [Member] \| Senior Notes, 5.95% due 2042 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			368.0			368.0					368.0
Senior Notes [Member] \| Senior Notes, 6.50% due 2036 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			446.0			446.0					446.0
Senior Notes [Member] \| Senior Notes, 6.75% due 2040 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			456.0			456.0					456.0
Senior Notes [Member] \| Senior Notes, 6.80% due 2037 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			255.0			255.0					255.0
Senior Notes [Member] \| Senior Notes, 7.00% due 2038 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			455.0			455.0					455.0
Senior Notes [Member]
Debt Instrument [Line Items]
Repayments of Debt	1,970.0
Debt Instrument, Repurchased Face Amount	$ 1,870.0
Interest Payable				27.0
Bond Tender Premium, Net				$ 78.0
Senior Notes [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Book Value of Debt Repurchase					236.0		396.0
Gain on repurchase of debt					$ 35.0		$ 47.0
Senior Notes [Member] \| Senior Notes, 5.50% due 2016 [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations			0.0			0.0					350.0
Weatherford Delaware [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 143.0			$ 143.0					$ 862.0
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 4.50% due 2022 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			4.50%			4.50%					4.50%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.00%			6.00%					6.00%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			9.625%			9.625%					9.625%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 5.125% due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			5.125%			5.125%					5.125%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 5.95% due 2042 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			5.95%			5.95%					5.95%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.50% due 2036 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.50%			6.50%					6.50%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.75% due 2040 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.75%			6.75%					6.75%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 7.00% due 2038 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			7.00%			7.00%					7.00%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 5.50% due 2016 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			5.50%			5.50%					5.50%
Weatherford Bermuda [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 6,468.0			$ 6,468.0					$ 4,885.0
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 8.25 Percent due 2023 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			8.25%	8.25%		8.25%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 6.35% due 2017 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.35%			6.35%					6.35%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Exchangeable Senior Notes, 5.875 Percent due 2021 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt				5.875%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 7.75 Percent due 2021 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			7.75%	7.75%		7.75%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 6.80% due 2037 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.80%			6.80%					6.80%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.425%
London Interbank Offered Rate (LIBOR) [Member] \| A&R Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.925%
London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member] \| Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate						1.425%
London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member] \| Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate						3.20%
Base Rate [Member] \| Minimum [Member] \| Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate						0.425%
Base Rate [Member] \| Maximum [Member] \| Term Loan Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate						2.20%