Equity (Common Stock - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Equity [Abstract]
Treasury Stock, Shares, Acquired	11,612,945	13,621,423
Treasury Stock, Value, Acquired, Cost Method, Net Of Excise Tax	$ 780
Treasury Stock, Value, Acquired, Cost Method	787	$ 915
Treasury Stock, Value, Acquired, Cost Method, Excise Tax	$ 7