v3.20.4
Net Capital Requirements - Additional Information (Detail) - USD ($)
$ in Billions
Dec. 31, 2020
Dec. 31, 2019
Regulatory Capital Requirements [Abstract]
Net capital requirement in certain regulated subsidiaries
$ 2.2
$ 1.9
X
- Definition
Net capital requirements.
+ References
No definition available.
+ Details
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Namespace Prefix:
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X
- References
No definition available.
+ Details
Name:
srt_RegulatoryCapitalRequirementsAbstract
Namespace Prefix:
srt_
Data Type:
xbrli:stringItemType
Balance Type:
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Period Type:
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