Subsequent Events (Details) - Subsequent Event - Senior debt - Parent Company	Jan. 29, 2025 USD ($)
Senior Fixed To Floating Rate Notes, Due January 29, 2031
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,000,000,000
Stated interest rate	5.222%
Basis spread on LIBOR rate - trust preferred securities	1.072%
Senior Fixed To Floating Rate Notes, Due January 29, 2036
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,750,000,000
Stated interest rate	5.575%
Basis spread on LIBOR rate - trust preferred securities	1.394%