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Restructuring Charges (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]          
Restructuring charges   $ 12 $ 1 $ 12  
Restructuring charges, net of tax   9 1 9  
Operating lease, impairment loss   11   11  
Severance Costs   $ 1   1  
Restructuring charges accrued $ 1   1   $ 2
Payments for Restructuring     2 $ 1  
Restructuring reserve, paid or settled     $ 1    
Maximum [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges 1        
Restructuring charges, net of tax $ 1