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Income Taxes And Tax-Related Items Income Taxes And Tax-Related Items (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income before income taxes $ 1,476 $ 1,490 $ 621
Foreign-source income 48    
Liability for tax-related interest and penalties 5 6  
Unrecognized tax benefits that would impact the effective tax rate 13 14  
Unrecognized Tax Benefits is Reasonably Possible, taxes 4    
Unrecognized Tax Benefits, interest and penalties 3    
Non-income tax benefit 4    
Non-income tax benefit recognized in following year 7    
Deferred Tax Assets, Operating Loss Carryforwards, Federal 4 3  
State net operating loss carryforwards 2 3  
Deferred tax assets, federal valuation allowance 4 3  
Deferred tax assets, state valuation allowance $ 1 $ 2  
Minimum      
Operating Loss Carryforwards, Expiration Date - Federal 2028    
Operating Loss Carryforwards, Expiration Date - State 2023    
Minimum | California      
Open Tax Year 2006    
Maximum      
Operating Loss Carryforwards, Expiration Date - Federal 2031    
Operating Loss Carryforwards, Expiration Date - State 2041    
Maximum | California      
Open Tax Year 2007