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Judgment: Royalty Rate from October 2017

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Judgment: Royalty Rate on Future Sales

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Loss Contingency, Estimate of Possible Loss (50% Enhancement of Past Damages)

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Loss Contingency, Material Transfer Agreements, Number

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Loss Contingency, Patents Allegedly Infringed, Number, Scenario One

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Loss Contingency, Patents Allegedly Infringed, Number, Scenario Two

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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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Amount of damages awarded to the plaintiff in the legal matter.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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The total number of new claims filed pertaining to a loss contingency during the period.

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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COMMITMENTS AND CONTINGENCIES (Details)	1 Months Ended			3 Months Ended	12 Months Ended	38 Months Ended
COMMITMENTS AND CONTINGENCIES (Details)	Apr. 30, 2020 plaintiff agreement	Dec. 31, 2019 USD ($) patent opposingParty	Aug. 31, 2017 plaintiff	Mar. 31, 2021 USD ($) plaintiff opposingParty lawsuit	Dec. 31, 2016 party	Mar. 31, 2021 USD ($) opposingParty	Dec. 31, 2018 opposingParty	Dec. 31, 2017 opposingParty
Loss Contingencies [Line Items]
Number of patents challenged, scenario one \| patent		4
Number of patents challenged, scenario two \| patent		2
Juno Therapeutics, Inc. and Sloan Kettering Cancer Center
Loss Contingencies [Line Items]
Damages awarded		$ 585,000,000
Running royalty rate from October 2017		27.60%
Enhancement rate on past damages	50.00%
Running royalty rate on future sales	27.60%
Estimate of possible loss representing past sales				$ 811,000,000		$ 811,000,000
Estimate of possible loss representing enhancement of past damages				389,000,000		389,000,000
Estimate of possible loss representing royalties and prejudgment interest				225,000,000		225,000,000
Juno Therapeutics, Inc. and Sloan Kettering Cancer Center \| Minimum
Loss Contingencies [Line Items]
Estimate of possible loss				0		0
Juno Therapeutics, Inc. and Sloan Kettering Cancer Center \| Maximum
Loss Contingencies [Line Items]
Estimate of possible loss				$ 1,400,000,000		1,400,000,000
ViiV Healthcare Company \| Pending Litigation
Loss Contingencies [Line Items]
Damages amount						$ 12,900,000,000
Pre-Exposure Prophylaxis
Loss Contingencies [Line Items]
Number of material transfer agreements \| agreement	4
European Patent Claims
Loss Contingencies [Line Items]
Number of parties appealed \| opposingParty		3		2		2	2	3
Number of parties filing opposition \| party					3
Product Liability
Loss Contingencies [Line Items]
Number of class action lawsuits \| lawsuit				2
Number of plaintiffs involved \| plaintiff				21,000
Qui Tam
Loss Contingencies [Line Items]
Number of plaintiffs involved \| plaintiff	2		2