BUSINESSES HELD FOR SALE AND DISCONTINUED OPERATIONS - Assets and Liabilities of Businesses Held for Sale, Narrative (Details) - BioPharma $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pretax gain on sale		$ 12,341
Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration	$ 21,149	21,149
Consideration, cash	20,732	20,732
Consideration, pension liabilities assumed	417	417
Cash payments associated with transaction	$ 154	154
Pretax gain on sale		12,341
Gain on sale, after tax		$ 11,199

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Disposal Group, Including Discontinued Operation, Consideration, Pension Liabilities Assumed

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Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, After Tax

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Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
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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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