Label	Element	Value
Stockholders' Equity, Other	us-gaap_StockholdersEquityOther	$ (8,000,000)
Issuance of Shares to Prior Shareholders	wfrd_IssuanceofSharestoPriorShareholders	29,000,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	2,837,000,000
Adjustments to Additional Paid in Capital, Warrant Issued	us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued	31,000,000
Additional Paid-in Capital [Member]
Stockholders' Equity, Other	us-gaap_StockholdersEquityOther	0
Additional Paid-in Capital [Member] | Reorganization Adjustments [Member]
Temporary Equity, Elimination as Part of Reorganization	us-gaap_TemporaryEquityEliminationAsPartofReorganization	(6,757,000,000)
Retained Earnings [Member]
Temporary Equity, Elimination as Part of Reorganization	us-gaap_TemporaryEquityEliminationAsPartofReorganization	5,010,000,000
Common Stock [Member]
Temporary Equity, Elimination as Part of Reorganization	us-gaap_TemporaryEquityEliminationAsPartofReorganization	(1,000,000)
AOCI Attributable to Parent [Member]
Temporary Equity, Elimination as Part of Reorganization	us-gaap_TemporaryEquityEliminationAsPartofReorganization	1,697,000,000
Noncontrolling Interest [Member]
Temporary Equity, Elimination as Part of Reorganization	us-gaap_TemporaryEquityEliminationAsPartofReorganization	0
Stockholders' Equity, Other	us-gaap_StockholdersEquityOther	$ 8,000,000