Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Proceeds from sale of property			$ 70
Proceeds from sale of certain properties subject to leaseback				$ 23
Property, plant and equipment		$ 9,707	13,186	9,707
Capital expenditures	$ 500	1,205	2,738		$ 1,181
Capital expenditures incurred but not yet paid			7
Capitalized interest			33
Land and Building [Member]
Property, Plant and Equipment [Line Items]
Proceeds from sale of property				15	27
Aggregate carrying value				14	37
Gain (Loss) on sale of property				1	$ (10)
Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net		129	121	129
Materials And Supplies [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 139	546	$ 139
Increase in property, plant and equipment			$ 400