(Accounts And Notes Receivable) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable	$ 3,059	$ 3,284
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable	2,841	3,064
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and notes receivable	$ 218	$ 220