Equity (Common Stock Repurchase Authorization) (Details) - USD ($) $ in Millions	Sep. 30, 2023	May 25, 2023	May 03, 2023	May 04, 2022
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount		$ 1,000	$ 3,000	$ 3,000
May32023Authorization
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,961
May252023Authorization
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	1,000
May2022Authorization
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 0