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Divestitures (Detail) - Insurance - Disposal group, disposed of by sale, not discontinued operations
$ in Millions
Nov. 01, 2021
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Proceeds from divestiture of businesses $ 534.9
Gain (loss) on divestitures and sale of investments 312.9
Advisor fee $ 4.4