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Business Description And Significant Accounting Policies: Schedule of Intangible Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Roll Forward]      
Intangible assets, net, beginning balance $ 9.6 $ 10.8 $ 11.9
Intangible assets, amortization expense (1.2) (1.2) (1.1)
Intangible assets, net, ending balance 8.4 $ 9.6 $ 10.8
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]      
Future Amortization Expense, Year Five $ 1.2    
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Useful Life 2 years    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Useful Life 41 years