Nature of Operations and Basis of Presentation (Details) - Wealth Management Business - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets classified as held for sale	$ 142	$ 120
Liabilities classified as held for sale	75	$ 77
Subsidiaries
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets classified as held for sale, cash and invested cash	$ 56

Amount classified as liabilities attributable to disposal group held for sale or disposed of.

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