Financial Instruments (Fair Value of Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Inputs, Level 2
Debt Instrument [Line Items]
Fair value, debt instrument	$ 6,319	$ 6,108

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details