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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
SCHEDULE II
AMGEN INC.
VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2021, 2020 and 2019
(In millions)
Allowance for doubtful accountsBalance
at beginning
of period		Additions
charged to
costs and
expenses		Other
additions		DeductionsBalance
at end
of period
Year ended December 31, 2021
$32 $— $— $(6)$26 
Year ended December 31, 2020
$26 $8 $— $(2)$32 
Year ended December 31, 2019
$48 $— $— $(22)$26