Securities - Carrying Amount of Company Investments in Non Marketable Equity Securities with No Readily Determinable Fair Value and Amounts Recognized in Earnings (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2022	Mar. 31, 2021
Investments Debt And Equity Securities [Abstract]
Equity security investments, committed amount		$ 3.2	$ 2.0
Realized cash gains for sale of investment	$ 13.9