BASIS OF PRESENTATION - Cash and Cash Equivalents (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Cash and Cash Equivalents
Cash and cash equivalents	$ 2,975		$ 3,019
Accrued property and equipment purchases for items received but not yet paid	81		127
Accrued property and equipment purchases for items received but not yet paid, accounts payable	67		109
Non-cancellable finance leases entered into	45	$ 51
Non-cancellable operating leases liability entered into	268	$ 187
Captive Insurance Subsidiaries
Cash and Cash Equivalents
Cash and cash equivalents	119		110
Accounts Payable
Cash and Cash Equivalents
Book overdrafts classified as accounts payable	$ 131		$ 143

Finance Lease, Right-Of-Use Assets Acquired

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Operating Lease, Right-Of-Use Assets, Acquired

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- Definition

Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of payments made in excess of existing cash balances, which will be honored by the bank but reflected as a loan to the entity. Overdrafts generally have a very short time frame for correction or repayment and are therefore more similar to short-term bank financing than trade financing.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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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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