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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Restructuring (Details) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance | $ 124 | $ 57 | $ 71
Restructuring, Settlement and Impairment Provisions | 3 | 135 | 3
Payments for Restructuring | (21) | (29) | (17)
Restructuring Reserve, Settled without Cash |  | (39) |
Restructuring Reserve, Ending Balance | 106 | 124 | 57
Restructuring Charges |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring, Settlement and Impairment Provisions |  | 86 |
Employee Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance | 111 | 48 | 56
Restructuring, Settlement and Impairment Provisions | 0 | 70 | 0
Payments for Restructuring | (15) | (7) | (8)
Restructuring Reserve, Settled without Cash |  | 0 |
Restructuring Reserve, Ending Balance | 96 | 111 | 48
Other Restructuring |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance | 13 | 9 | 15
Restructuring, Settlement and Impairment Provisions | 3 | 26 | 3
Payments for Restructuring | (6) | (22) | (9)
Restructuring Reserve, Ending Balance | 10 | 13 | 9
Asset Impairments |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance | 0 | 0 | 0
Restructuring, Settlement and Impairment Provisions | 0 | 39 | 0
Payments for Restructuring | 0 | 0 | 0
Restructuring Reserve, Settled without Cash |  | (39) |
Restructuring Reserve, Ending Balance | $ 0 | 0 | $ 0
Defined benefit plan | Other Restructuring | Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring, Settlement and Impairment Provisions |  | $ 10 |

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-17 + Details
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