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Income Taxes And Tax-Related Items (Income Taxes And Tax-Related Items) (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Income Tax Contingency [Line Items]    
Unrecognized tax benefits $ 8  
Tax-related interest and penalties payable 1  
Net deferred tax assets 882 $ 1,000
Deferred Tax Assets, Other (152)  
Deferred tax assets, operating loss carryforwards, state and local 2  
Deferred tax assets, federal valuation allowance 9  
Deferred tax assets, state valuation allowance $ 2 $ 2
Minimum    
Income Tax Contingency [Line Items]    
Operating loss carryforwards, expiration date - federal 2029  
Operating loss carryforwards, expiration date - state 2025  
Maximum    
Income Tax Contingency [Line Items]    
Operating loss carryforwards, expiration date - federal 2035  
Operating loss carryforwards, expiration date - state 2044