ALLIANCES (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Alliance Statement [Line Items]
Total Revenues		$ 11,887	$ 11,703	$ 23,535	$ 22,776
Cost of products sold	[1]	2,720	2,452	5,191	5,293
Research and development		2,321	2,478	4,581	4,697
Acquired IPRD		400	793	733	799
Other (income)/expense, net		284	(2)	933	(704)
Receivables – from alliance partners		9,054		9,054		$ 9,369
Accounts payable – to alliance partners		2,882		2,882		2,949
BridgeBio
Alliance Statement [Line Items]
Upfront payments made to collaborative partner		90
Consideration for contingent development and regulatory approval		815
Alliance revenues
Alliance Statement [Line Items]
Total Revenues		3,472	2,964	6,899	5,988
Cost of products sold		1,572	1,346	3,128	2,743
Marketing, selling and administrative		(53)	(48)	(107)	(97)
Research and development		12	6	34	7
Acquired IPRD		100	730	100	736
Other (income)/expense, net		(11)	(14)	(23)	(19)
Receivables – from alliance partners		325		325		320
Accounts payable – to alliance partners		1,509		1,509		1,229
Deferred income from alliances		321		321		$ 330
Alliance revenues | Eisai
Alliance Statement [Line Items]
Upfront payments made to collaborative partner			650
Consideration for contingent development and regulatory approval			2,500
Net product sales
Alliance Statement [Line Items]
Total Revenues		11,485	11,405	22,793	22,203
Net product sales | Alliance revenues
Alliance Statement [Line Items]
Total Revenues		3,273	2,805	6,512	5,687
Alliance revenues | Alliance revenues
Alliance Statement [Line Items]
Total Revenues		$ 199	$ 159	$ 387	$ 301

[1] Excludes amortization of acquired intangible assets