Leased Assets and Liabilities (Weighted-Average) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Leases signed but not yet commenced	$ 17
Weighted-average remaining lease term
Operating leases	5 years 7 months 6 days	6 years 4 months 24 days
Finance leases	4 years 4 months 24 days	5 years 1 month 6 days
Weighted-average discount rate
Operating leases	9.50%	8.20%
Finance leases	7.70%	6.20%