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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
DexCom, Inc.
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
(In millions)
Allowance for doubtful accounts
Balance at December 31, 2017$11.4 
Provision for doubtful accounts3.6 
Write-offs and adjustments(8.3)
Recoveries0.5 
Balance at December 31, 2018$7.2 
Allowance for doubtful accounts
Balance at December 31, 2018$7.2 
Provision for doubtful accounts0.9 
Write-offs and adjustments(3.0)
Recoveries0.7 
Balance at December 31, 2019$5.8 
Allowance for doubtful accounts
Balance at December 31, 2019$5.8 
Provision for doubtful accounts3.2 
Write-offs and adjustments(2.1)
Recoveries0.3 
Balance at December 31, 2020$7.2