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Leases Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Leases Leases (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Lease, Impairment Loss	$ 34	$ 136	$ 258
Minimum [Member]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member]
Lessee, Operating Lease, Term of Contract	12 years