Disputes, Litigation and Contingencies (Details) $ in Millions					3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 27, 2016 payment	May 26, 2016 USD ($)	Nov. 04, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2010 lawsuit	Sep. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Litigation Settlement, Amount		$ 150					$ (112)
Recorded Unconditional Purchase Obligation						$ 133
Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Recorded Unconditional Purchase Obligation						27
Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Recorded Unconditional Purchase Obligation						106
Fair Value Guarantee [Member] | Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual						28
Neff v. Brady, et al.
Loss Contingencies [Line Items]
Number of actions filed (in lawsuits) | lawsuit								3
Freedman v. Weatherford International Ltd., et al. [Member] [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount				$ 120
Payments for legal settlements			$ 120
Insurance Settlements Receivable					$ 4	$ 19
U.S. SEC and DOJ Investigation [Domain]
Loss Contingencies [Line Items]
Loss Contingency Accrual					$ 65				$ 140
Number of installments in which equal installments are due | payment	3
Period of time in which reports and certifications are delivered regarding tax internal controls	2 years
U.S. SEC and DOJ Investigation [Domain] | Settlement payments due 21 days from settlement [Domain]
Loss Contingencies [Line Items]
Loss Contingency Accrual									50
Portion of total civil monetary payment due	21 days
U.S. SEC and DOJ Investigation [Domain] | Settlement payments due in 120 days [Domain]
Loss Contingencies [Line Items]
Loss Contingency Accrual									30
Portion of total civil monetary payment due	120 days
U.S. SEC and DOJ Investigation [Domain] | Settlement payments due in 240 days [Domain]
Loss Contingencies [Line Items]
Loss Contingency Accrual									30
Portion of total civil monetary payment due	240 days
U.S. SEC and DOJ Investigation [Domain] | Settlement payments due in 360 days [Domain]
Loss Contingencies [Line Items]
Loss Contingency Accrual									$ 30
Portion of total civil monetary payment due	360 days