Financing Activities Financing Activities- Equity Securities (Details) - USD ($) shares in Thousands, $ in Billions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Aug. 01, 2021
Equity Programs [Line Items]
Stock Repurchase Program, Authorized Amount					$ 3.0
Common Stock [Member]
Equity Programs [Line Items]
Common stock shares issued	[1]	123	983	1,674
Treasury stock		1,252
Treasury Stock
Equity Programs [Line Items]
Treasury Stock, Value, Acquired, Cost Method		$ 0.0	$ 1.0

[1] Shares in thousands. Each share entitles the holder to one vote on any question presented at any shareowners' meeting.