Equity (Share Repurchase Program) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method	$ 81	$ 99	$ 163
Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired	599,254,000	852,037,000
Treasury Stock, Value, Acquired, Cost Method	$ 75	$ 96
Treasury Stock Acquired, Average Cost Per Share	$ 125.15	$ 112.64
2019 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	219,116
Payments for Repurchase of Common Stock	$ 25
2022 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	380,138
Payments for Repurchase of Common Stock	$ 50