Acquisitions - Otezla (Details) - Otezla $ in Millions	Nov. 21, 2019 USD ($)
Business Acquisition [Line Items]
Cash purchase price	$ 13,400
Transaction costs	40
Accumulated cost (consideration transferred)	13,440
Intangible assets:
Inventory	367
Deferred tax liability, net	(24)
Deferred credit	(96)
Other liabilities, net	(9)
Total assets acquired, net	13,440
Developed Technology Rights
Business Acquisition [Line Items]
Business acquired asset acquisition, Finite-lived intangible assets acquired	13,007
Marketing-Related Rights
Business Acquisition [Line Items]
Business acquired asset acquisition, Finite-lived intangible assets acquired	$ 195