Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 15,180		$ 13,186
Capital expenditures	2,211	$ 1,088
Capital expenditures incurred but not yet paid	218
Accounts payable associated with capital	764
Capitalized interest	39
Materials And Supplies [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 596		$ 546