Regulatory Capital - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	5.36%	6.35%
FCB
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	5.26%	5.85%
Dividend restrictions, additional maximum amount of distribution	$ 2,900
Payments of dividends	$ 930

Banking Regulation, Dividend Restrictions, Maximum Additional Amount Of Distribution

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- Definition

Banking Regulation, Total Risk-Based Capital Ratio, Capital Conservation Buffer

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

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