Restrictions on Subsidiary Dividends and Loans or Advances (Details) $ in Billions	Dec. 31, 2023 USD ($)
Banking and Thrift, Other Disclosure [Abstract]
Statutory accounting practices, statutory amount available for dividend payments without regulatory approval	$ 1.5

Amount of dividends that can be declared or paid without approval of regulatory agency.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant