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Income Taxes (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2022
U.S. Statutory Tax Rate 21.00% 21.00% 21.00%  
Valuation allowance on deferred tax assets $ 0 $ 0    
Undistributed accumulated earnings of foreign subsidiaries 1,600,000,000 $ 1,500,000,000    
Earnings, Indefinitely Reinvested Abroad Due To Regulatory And Other Capital Requirements 1,500,000,000      
Estimated Deferred Tax Liablity Due To Hypothetical Repatriation Of Earnings 16,000,000      
Liability for Uncertainty in Income Taxes $ 12,000,000      
Scenario, Forecast [Member]        
Expected settled amount from uncertain tax position       $ 12,000,000