Revenue (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Threshold percentage of total revenue (as a percent)			1.00%
Revenue recognized that was included in the contract liability balance at the beginning of the period	$ 149	$ 187	$ 730	$ 698
Performance obligation satisfied in previous period	$ 18	$ 20	$ 61	$ 64