Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating right-of-use assets	$ 187	$ 200
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Finance right-of-use assets	$ 121	$ 129
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Operating lease liabilities	$ 213	$ 204
Finance lease liabilities	$ 133	$ 148
Operating leases, Weighted-average remaining lease term	8 years 5 months 1 day	8 years 7 days
Operating leases, Weighted-average discount rate	5.87%	5.89%
Finance lease, Weighted-average remaining lease term	12 years 9 months 21 days	12 years 8 months 26 days
Finance lease, Weighted-average discount rate	8.53%	8.24%
Other Current Liabilities [Member]
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating lease liabilities	$ 42	$ 171
Finance lease liabilities	18	115
Other Noncurrent Liabilities [Member]
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating lease liabilities	41	163
Finance lease liabilities	$ 20	$ 128