Shareholders' Equity Dividends (Details) - USD ($) $ / shares in Units, $ in Millions					12 Months Ended
	Dec. 14, 2021	Sep. 21, 2021	Jun. 29, 2021	Mar. 23, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Cash dividends per common share	$ 1.45	$ 1.45	$ 1.45	$ 1.25	$ 5.60	$ 4.83	$ 4.14
Payments of Ordinary Dividends, Common Stock	$ 1,365	$ 1,367	$ 1,367	$ 1,181	$ 5,280	$ 4,584	$ 3,932