Debt Notes and Debentures (Details)	Jun. 30, 2022 USD ($)
SEC Debt Shelf Registration
Debt Instrument [Line Items]
Remaining Debt Securities Authorized by the Board	$ 1,550,000,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Subordinated notes related to financial covenants	500,000,000
Four Point Four Five Percent Due January 15, 2053 | Corporate Debt Securities
Debt Instrument [Line Items]
Debt issuance, face amount	$ 1,000,000,000
Debt instrument, stated interest rate	4.45%