FAIR VALUE MEASUREMENTS (Details)	Sep. 30, 2020 USD ($)
FAIR VALUE MEASUREMENTS
Cash held in the Trust Account	$ 193
Marketable securities held in the Trust Account	$ 1,035,519,088

The amount of marketable securities held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.

No definition available.

Name:	wpf_MarketableSecuritiesHeldInTrustNoncurrent
Namespace Prefix:	wpf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant