ACQUISITION AND DISPOSAL OF SUBSIDIARIES - Acquisition (Details) - Railtech Alu-Singen - USD ($) $ in Millions		9 Months Ended
Aug. 29, 2024	Sep. 30, 2024
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	51.00%
Business combination, consideration transferred	$ 3
Business combination cash and cash equivalent	6
Cash acquired in excess of payments to acquire business	$ 3
Goodwill, acquired during period		$ 5
Non-controlling interests, recognized in other gains and losses		$ 3

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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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The cash inflow associated with the acquisition of a business when the cash held by the acquired business exceeds the cash payments to acquire the business.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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