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Summary Of Significant Accounting Policies (Schedule of Components of Investments) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Summary Of Significant Accounting Policies [Line Items]    
Investments $ 727 $ 666
Catalyst [Member]    
Summary Of Significant Accounting Policies [Line Items]    
% Interest 50.00%  
Investments $ 273 311
Water JV [Member]    
Summary Of Significant Accounting Policies [Line Items]    
% Interest 30.00%  
Investments $ 216 216
Matterhorn [Member]    
Summary Of Significant Accounting Policies [Line Items]    
% Interest 12.50%  
Investments $ 69 90
Other [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Investments $ 54 $ 49