DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Classification and Fair Value Amounts of Derivative Instruments (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | $ 1 | $ 0 |
| Derivative liability, fair value | 3 | 1 |
| Total derivative instruments, liabilities | 813 | 835 |
| Derivative instruments designated as hedges | Balance Sheet Location: bax:LongTermDebtAndLeaseObligationExcludingCurrentMaturities | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, not subject to master netting arrangement, fair value | 810 | 834 |
| Undesignated derivative instruments | Foreign exchange contracts | Balance Sheet Location: us-gaap:AccruedLiabilitiesCurrent | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | 3 | $ 1 |
| Undesignated derivative instruments | Foreign exchange contracts | Balance Sheet Location: us-gaap:PrepaidExpenseAndOtherAssetsCurrent | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | $ 1 |
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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