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Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 0	$ 0	$ 20	$ 0
Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs			14
Facility Closing
Restructuring Cost and Reserve [Line Items]
Other restructuring costs			$ 6
Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		$ 0