Leases (Components of Lease Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Operating lease expense	$ 11	$ 12
Other expenses associated with operating leases	15	12
Total lease expense	26	24
Related cash disbursements from operating leases	$ 12	$ 12