Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount debtor-in-possession financing arranged (but not necessarily all borrowed).

No definition available.

Name:	us-gaap_DebtorInPossessionFinancingAmountArranged
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of letters of credit outstanding under debtor-in-possession financing arrangement.

No definition available.

Name:	us-gaap_DebtorInPossessionFinancingLettersOfCreditOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Debtor-in-Possession Financing, Proceeds From Borrowings

No definition available.

Name:	wft_DebtorinPossessionFinancingProceedsFromBorrowings
Namespace Prefix:	wft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Prepetition Charges

No definition available.

Name:	wft_PrepetitionCharges
Namespace Prefix:	wft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	us-gaap_DebtInstrumentAxis=wft_DIPCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_CreditFacilityAxis=wft_DebtorinPossessionRevolvingCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_CreditFacilityAxis=wft_TermLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: