XML 60 R48.htm IDEA: XBRL DOCUMENT v3.24.3
Marketable and Other Securities - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Marketable Securities [Abstract]          
Sale proceeds from investments classified as available-for-sale and sold prior to maturity $ 580 $ 454 $ 1,600 $ 1,500  
Amount of unrealized gain (loss) on available-for-sale debt securities $ 159   $ 160    
Cumulative unrealized losses on available-for-sale debt securities         $ 160