1 Financing Arrangements and Derivative Financial Instruments - Notes Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Notes payable	$ 5,423	$ 4,391
Senior Notes \| 6.625% due 2030
Debt Instrument [Line Items]
Interest rate	6.625%	6.625%
Senior Notes \| 8.875% notes due 2032
Debt Instrument [Line Items]
Interest rate	8.875%	8.875%

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

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References + Details