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ACQUISITIONS AND OTHER ARRANGEMENTS - Additional Information (Details)				1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 02, 2021 USD ($) $ / shares	Sep. 01, 2021 USD ($)	Jul. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Business Acquisition [Line Items]
Payments to acquire productive assets									$ 508,000,000	$ 472,000,000
Net sales							$ 3,226,000,000	$ 2,972,000,000	9,270,000,000	$ 8,492,000,000
Caelyx and Doxil
Business Acquisition [Line Items]
Payments to acquire productive assets						$ 325,000,000
Net sales							32,000,000		73,000,000
Customer Relationships | Caelyx and Doxil
Business Acquisition [Line Items]
Weighted-average useful life						8 years
Payments to acquire productive assets						$ 11,000,000
Developed Technology Intangible Asset | Caelyx and Doxil
Business Acquisition [Line Items]
Weighted-average useful life						9 years
Payments to acquire productive assets						$ 314,000,000
Bridge Facility
Business Acquisition [Line Items]
Debt instrument term			364 days
364-day Senior Unsecured Bridge Term Loan | Bridge Facility
Business Acquisition [Line Items]
Senior notes			$ 11,400,000,000
Period after which upfront fee will increase			120 days
364-day Senior Unsecured Bridge Term Loan | Bridge Facility | Minimum
Business Acquisition [Line Items]
Upfront fee (percent)			$ 40,000,000
364-day Senior Unsecured Bridge Term Loan | Bridge Facility | Maximum
Business Acquisition [Line Items]
Debt instrument term			364 days
Upfront fee (percent)			$ 53,000,000
Undrawn commitments ticking fee (percent)			0.125%
364-day Senior Unsecured Bridge Term Loan | Bridge Facility | 90th day after initial funding | Maximum
Business Acquisition [Line Items]
Duration fee (percent)			0.50%
364-day Senior Unsecured Bridge Term Loan | Bridge Facility | 180th day after initial funding | Maximum
Business Acquisition [Line Items]
Duration fee (percent)			0.75%
364-day Senior Unsecured Bridge Term Loan | Bridge Facility | 270th day after initial funding | Maximum
Business Acquisition [Line Items]
Duration fee (percent)			1.00%
Term Loan Credit Agreement | Term Loan Facility
Business Acquisition [Line Items]
Fees under the credit facilities (percent)	0.125%
Line of credit facility, maximum borrowing capacity	$ 4,000,000,000						$ 4,000,000,000		$ 4,000,000,000
Term Loan Credit Agreement | Term Loan Facility | First year
Business Acquisition [Line Items]
Loans annual amortization rate (percent)	0.625%						0.625%		0.625%
Term Loan Credit Agreement | Term Loan Facility | After first year
Business Acquisition [Line Items]
Loans annual amortization rate (percent)	1.25%						1.25%		1.25%
Term Loan Credit Agreement | Bridge Facility
Business Acquisition [Line Items]
Line of credit facility, accordion feature, decrease limit	$ 7,400,000,000						$ 7,400,000,000		$ 7,400,000,000
Three Year Term Loan | Term Loan Facility
Business Acquisition [Line Items]
Debt instrument term	3 years
Line of credit facility, maximum borrowing capacity	$ 2,000,000,000						2,000,000,000		2,000,000,000
Five Year Term Loan | Term Loan Facility
Business Acquisition [Line Items]
Debt instrument term	5 years
Line of credit facility, maximum borrowing capacity	$ 2,000,000,000						$ 2,000,000,000		$ 2,000,000,000
Five Year Term Loan | Term Loan Facility | After second anniversary
Business Acquisition [Line Items]
Loans annual amortization rate (percent)	1.875%						1.875%		1.875%
Five Year Term Loan | Term Loan Facility | After third anniversary
Business Acquisition [Line Items]
Loans annual amortization rate (percent)	2.50%						2.50%		2.50%
Hillrom
Business Acquisition [Line Items]
Cash consideration		$ 10,500,000,000
Business​ combination​ consideration​ transferred		$ 12,400,000,000
Acquire businesses, per share, cash paid (in dollars per share) | $ / shares		$ 156.00
Glaxo Smith Kline | Transderm Scop
Business Acquisition [Line Items]
Business​ combination​ consideration​ transferred					$ 84,000,000
Cash					60,000,000
Contingent consideration					30,000,000
Contingent consideration, fair value					24,000,000
Glaxo Smith Kline | Transderm Scop | Developed Product Rights
Business Acquisition [Line Items]
Fair value of asset acquired					$ 64,000,000
Weighted-average useful life					9 years
Glaxo Smith Kline | Transderm Scop | Developed Product Rights | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Discount rate used to measure intangible assets					0.225
Glaxo Smith Kline | Transderm Scop | Customer Relationships
Business Acquisition [Line Items]
Fair value of asset acquired					$ 3,000,000
Weighted-average useful life					7 years
Glaxo Smith Kline | Transderm Scop | Customer Relationships | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Discount rate used to measure intangible assets					0.155
Cryo Life | PerClot
Business Acquisition [Line Items]
Business​ combination​ consideration​ transferred				$ 53,000,000
Cash				25,000,000
Contingent consideration				36,000,000
Contingent consideration, fair value				28,000,000
Cryo Life | PerClot | In Process Research and Development
Business Acquisition [Line Items]
Indefinite-lived intangible assets acquired				$ 39,000,000
Cryo Life | PerClot | Measurement Input, Discount Rate | In Process Research and Development
Business Acquisition [Line Items]
Discount rate used to measure intangible assets				0.187
Cryo Life | PerClot | Developed Product Rights
Business Acquisition [Line Items]
Fair value of asset acquired				$ 9,000,000
Weighted-average useful life				10 years
Cryo Life | PerClot | Developed Product Rights | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Discount rate used to measure intangible assets				0.160
Cryo Life | PerClot | Customer Relationships
Business Acquisition [Line Items]
Fair value of asset acquired				$ 1,000,000
Weighted-average useful life				10 years
Cryo Life | PerClot | Customer Relationships | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Discount rate used to measure intangible assets				0.150

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