Business and Basis of Presentation FX gain (loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Foreign Currency Transaction Gain (Loss), before Tax			$ (8)	$ (2)
Gain (Loss) on Investments [Member]
Foreign Currency Transaction Gain (Loss), before Tax	$ (5)	$ 2	$ (6)	$ (2)