Rendering

Component: (Network and Table)
Network
2405410 - Disclosure - Balance Sheet Components - Product Warranty (Details)
(http://www.fitbit.com/role/BalanceSheetComponentsProductWarrantyDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001447599 (http://www.sec.gov/CIK)
Organization, Consolidation and Presentation of Financial Statements [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Organization, Consolidation and Presentation of Financial Statements [Abstract]
 
 
 
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
 
 
 
Beginning balances
40,212,000  
20,098,000  
8,480,000  
Charged to cost of revenue
134,771,000  
55,642,000  
19,462,000  
Changes in estimate related to pre-existing warranties
4,073,000  
(8,968,000) 
 
Settlement of claims
(79,133,000) 
(26,560,000) 
(7,844,000) 
Ending balances
99,923,000  
 
40,212,000  
 
20,098,000