Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current Assets
Cash and Cash Equivalents	$ 474	$ 435	$ 300	$ 371
Other Current Assets	7,470	9,499
Total Current Assets	7,944	9,934
Equity Investments in Affiliates	0	0
Equity Held in Parent		0
Intercompany Receivables, Net	0	0
Other Assets	10,945	12,043
Total Assets	18,889	21,977
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	727	1,653
Accounts Payable and Other Current Liabilities	3,300	4,104
Total Current Liabilities	4,027	5,757
Long-term Debt	6,798	7,061
Intercompany Payables, Net	0	0
Other Long-term Liabilities	1,031	956
Total Liabilities	11,856	13,774
Weatherford Shareholders’ Equity	6,958	8,162
Noncontrolling Interests	75	41
Total Liabilities and Shareholders’ Equity	18,889	21,977
Eliminations [Member]
Current Assets
Cash and Cash Equivalents	0	0	0	0
Other Current Assets	(614)	(408)
Total Current Assets	(614)	(408)
Equity Investments in Affiliates	(32,856)	(34,936)
Equity Held in Parent		(37)
Intercompany Receivables, Net	(10,490)	(7,304)
Other Assets	0	0
Total Assets	(43,960)	(42,685)
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	(614)	(408)
Total Current Liabilities	(614)	(408)
Long-term Debt	1	0
Intercompany Payables, Net	(10,490)	(7,304)
Other Long-term Liabilities	0	0
Total Liabilities	(11,103)	(7,712)
Weatherford Shareholders’ Equity	(32,857)	(34,973)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Equity	(43,960)	(42,685)
Weatherford Switzerland [Member]
Current Assets
Cash and Cash Equivalents	1	0	0	0
Other Current Assets	4	57
Total Current Assets	5	57
Equity Investments in Affiliates	8,662	8,663
Equity Held in Parent		0
Intercompany Receivables, Net	0	0
Other Assets	5	7
Total Assets	8,672	8,727
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	43	312
Total Current Liabilities	43	312
Long-term Debt	0	0
Intercompany Payables, Net	1,666	243
Other Long-term Liabilities	5	10
Total Liabilities	1,714	565
Weatherford Shareholders’ Equity	6,958	8,162
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Equity	8,672	8,727
Weatherford Bermuda [Member]
Current Assets
Cash and Cash Equivalents	0	0	0	0
Other Current Assets	12	5
Total Current Assets	12	5
Equity Investments in Affiliates	10,490	11,742
Equity Held in Parent		0
Intercompany Receivables, Net	0	0
Other Assets	35	41
Total Assets	10,537	11,788
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	618	1,445
Accounts Payable and Other Current Liabilities	256	129
Total Current Liabilities	874	1,574
Long-term Debt	5,749	5,891
Intercompany Payables, Net	6,202	6,755
Other Long-term Liabilities	82	97
Total Liabilities	12,907	14,317
Weatherford Shareholders’ Equity	(2,370)	(2,529)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Equity	10,537	11,788
Guarantor Subsidiaries, Weatherford Delaware [Member]
Current Assets
Cash and Cash Equivalents	22	0	0	0
Other Current Assets	544	415
Total Current Assets	566	415
Equity Investments in Affiliates	9,730	8,065
Equity Held in Parent		10
Intercompany Receivables, Net	0	0
Other Assets	16	17
Total Assets	10,312	8,507
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	6	23
Accounts Payable and Other Current Liabilities	0	0
Total Current Liabilities	6	23
Long-term Debt	911	986
Intercompany Payables, Net	2,622	306
Other Long-term Liabilities	5	2
Total Liabilities	3,544	1,317
Weatherford Shareholders’ Equity	6,768	7,190
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Equity	10,312	8,507
Other Subsidiaries [Member]
Current Assets
Cash and Cash Equivalents	451	435	300	371
Other Current Assets	7,524	9,430
Total Current Assets	7,975	9,865
Equity Investments in Affiliates	3,974	6,466
Equity Held in Parent		27
Intercompany Receivables, Net	10,490	7,304
Other Assets	10,889	11,978
Total Assets	33,328	35,640
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	103	185
Accounts Payable and Other Current Liabilities	3,615	4,071
Total Current Liabilities	3,718	4,256
Long-term Debt	137	184
Intercompany Payables, Net	0	0
Other Long-term Liabilities	939	847
Total Liabilities	4,794	5,287
Weatherford Shareholders’ Equity	28,459	30,312
Noncontrolling Interests	75	41
Total Liabilities and Shareholders’ Equity	$ 33,328	$ 35,640