XML 81 R71.htm IDEA: XBRL DOCUMENT v3.22.1

Derivatives - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Replacement cost of contracts in a gain position	$ 4.8	$ 2.9

X

- Definition

The replacement cost of derivative contracts in a gain or asset position.

+ References

No definition available.

+ Details

Name:	bgcp_DerivativeContractInGainPositionReplacementCost
Namespace Prefix:	bgcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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