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Acquisitions / Business Combinations - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Jan. 03, 2018
Dec. 26, 2020
Dec. 29, 2018
Feb. 26, 2018
Business Acquisition [Line Items]        
Deferred cash payments     $ 59  
Unrecognized expense relating to deferred cash   $ 7    
Unrecognized expense relating to weighted average period   1 year    
Skyhigh Networks, Inc.        
Business Acquisition [Line Items]        
Percentage of voting interest acquired 100.00%      
Purchase price $ 590      
Skyhigh Networks, Inc. | Restricted Class A Units        
Business Acquisition [Line Items]        
Stock issued in connection with acquisition 2.2      
Stock issued, fair value $ 10.67      
Stock issued, expiration period from acquisition date 2 years      
TunnelBear, Inc.        
Business Acquisition [Line Items]        
Purchase price       $ 25