Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 0	$ 20
Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		14
Facility Closing
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		6
Severance and Other Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	21		$ 25
Severance and Other Restructuring Liabilities | Other Current Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	12		16
Severance and Other Restructuring Liabilities | Other Noncurrent Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 9		$ 9
Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		$ 20