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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
DexCom, Inc.
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
(In millions)
 
 
 
Allowance for doubtful accounts
 
Balance at December 31, 2016
$
12.4

Provision for doubtful accounts
5.3

Write-offs and adjustments
(7.0
)
Recoveries
0.7

Balance at December 31, 2017
$
11.4

 
 
Allowance for doubtful accounts
 
Balance at December 31, 2017
$
11.4

Provision for doubtful accounts
3.6

Write-offs and adjustments
(8.3
)
Recoveries
0.5

Balance at December 31, 2018
$
7.2

 
 
Allowance for doubtful accounts
 
Balance at December 31, 2018
$
7.2

Provision for doubtful accounts
0.9

Write-offs and adjustments
(3.0
)
Recoveries
0.7

Balance at December 31, 2019
$
5.8