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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2018
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, 2019, 2018 and 2017
(In millions)
Allowance for doubtful accounts
 
Balance
at beginning
of period
 
Additions
charged to
costs and
expenses
 
Other
additions
 
Deductions
 
Balance
at end
of period
Year ended December 31, 2019
 
$
48

 
$
—

 
$
—

 
$
22

 
$
26

Year ended December 31, 2018
 
$
51

 
$
1

 
$
—

 
$
4

 
$
48

Year ended December 31, 2017
 
$
51

 
$
4

 
$
—

 
$
4

 
$
51