Leases (Lease Income Associated with Operating Leases) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Fixed payments	$ 15	$ 15	$ 15
Variable payments	46	45	44
Total lease income under operating leases	$ 61	$ 60	$ 59