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Regulatory Requirements (Narrative) (Details) $ in Millions	Mar. 31, 2021 USD ($)
Regulatory Requirements [Abstract]
Excess	$ 6,735

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- References

No definition available.

+ Details

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- Definition

Amount of total risk-based capital exceeding minimum required for capital adequacy as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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