Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating right-of-use assets	$ 181	$ 187
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Finance right-of-use assets	$ 179	$ 121
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	$ 195	$ 213
Finance lease liabilities	$ 209	$ 133
Operating leases, Weighted-average remaining lease term	7 years 8 months 19 days	8 years 5 months 1 day
Operating leases, Weighted-average discount rate	5.92%	5.87%
Finance lease, Weighted-average remaining lease term	10 years 8 months 19 days	12 years 9 months 21 days
Finance lease, Weighted-average discount rate	7.18%	8.53%
Other Current Liabilities [Member]
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating lease liabilities	$ 41	$ 154
Finance lease liabilities	28	181
Other Noncurrent Liabilities [Member]
Supplemental Balance Sheet Information Related To Leases [Line Items]
Operating lease liabilities	42	171
Finance lease liabilities	$ 18	$ 115