v3.26.1
Goodwill and Other Intangible Assets, net: (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Intangible Asset, Goodwill and Other [Abstract]        
Impairment of goodwill $ 0 $ 41 $ 0 $ 41
Impairment of non-amortizable intangible assets 0   0  
Estimated amortization expense, year one, assuming no additional transactions occur that require the amortization of intangible assets 1,000   1,000  
Estimated amortization expense, year two, assuming no additional transactions occur that require the amortization of intangible assets 1,000   1,000  
Estimated amortization expense, year three, assuming no additional transactions occur that require the amortization of intangible assets 1,000   1,000  
Estimated amortization expense, year four, assuming no additional transactions occur that require the amortization of intangible assets 1,000   1,000  
Estimated amortization expense, year five, assuming no additional transactions occur that require the amortization of intangible assets $ 1,000   $ 1,000