Leases (Lease Income Associated with Operating Leases) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Leases [Abstract]
Fixed payments	$ 4	$ 4	$ 11	$ 11
Variable payments	12	13	31	35
Total lease income under operating leases	$ 16	$ 17	$ 42	$ 46