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ACQUISITIONS AND OTHER ARRANGEMENTS - Summary of Fair Value of Assets Acquired and Liabilities Assumed for Mallinckrodt Plc (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Mar. 16, 2018
Dec. 31, 2017
Acquisitions And Collaborations [Line Items]                  
Goodwill $ 3,030 $ 2,937 $ 2,929 $ 3,002 $ 2,978 $ 2,981 $ 3,103   $ 3,102
RECOTHROM and PREVELEAK | Mallinckrodt plc                  
Acquisitions And Collaborations [Line Items]                  
Accounts receivable, net               $ 2  
Inventories               80  
Goodwill               2  
Other intangible assets               100  
Total assets acquired               $ 184