Revenue (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue, OTLs and STLs	$ 466	$ 402	$ 410
Contract with customer, liability	1,600	1,500
Contract with customer, liability, revenue recognized	$ 1,200	$ 1,300