Business Segment Information Business Segment Information (Restructuring Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 3	$ 13
Payments for Restructuring	40	135
Restructuring Reserve	0	37	$ 159
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3	12
Payments for Restructuring	40	120
Restructuring Reserve	0	37	145
Economic Development Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	1
Payments for Restructuring	0	15
Restructuring Reserve	$ 0	$ 0	$ 14