Employee Benefit Plans (Schedule of RSU Activity) (Details)		3 Months Ended		6 Months Ended
	Jun. 15, 2020 shares	Jun. 28, 2020 installment $ / shares shares	Sep. 29, 2019 shares	Jun. 28, 2020 $ / shares shares
Arlo | RSU, PSU, MPSU
Number of shares
Ending balance (in shares)			800,000
Arlo | RSUs
Number of shares
Beginning balance (in shares)				7,851,000
Granted (in shares)				5,958,000
Vested (in shares)				(2,525,000)
Forfeited / Cancelled (in shares)				(1,022,000)
Ending balance (in shares)		10,262,000		10,262,000
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share) | $ / shares				$ 6.50
Granted (in dollars per share) | $ / shares				2.87
Vested (in dollars per share) | $ / shares				6.47
Forfeited / cancelled (in dollars per share) | $ / shares				4.67
Ending Balance (in dollars per share) | $ / shares		$ 4.58		$ 4.58
Arlo | MPSUs
Weighted Average Grant Date Fair Value Per Share
Vesting period				3 years
Positive movement of benchmark (multiplier)		3.3		3.3
Negative movement of benchmark (multiplier)		2.5		2.5
Positive movement of benchmark (as a percentage)		3.30%		3.30%
Negative movement of benchmark (as a percentage)		2.50%		2.50%
Movement of benchmark, increment (as a percentage)		1.00%		1.00%
Threshold (as a percentage)		30.00%		30.00%
NETGEAR | RSUs
Number of shares
Beginning balance (in shares)				278,000
Vested (in shares)				(111,000)
Forfeited / Cancelled (in shares)				(20,000)
Ending balance (in shares)		147,000		147,000
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share) | $ / shares				$ 36.14
Vested (in dollars per share) | $ / shares				34.55
Forfeited / cancelled (in dollars per share) | $ / shares				36.27
Ending Balance (in dollars per share) | $ / shares		$ 37.33		$ 37.33
Maximum | 2018 Plan
Weighted Average Grant Date Fair Value Per Share
Vesting period				4 years
Maximum | Arlo | MPSUs
Weighted Average Grant Date Fair Value Per Share
Threshold (as a percentage)		200.00%		200.00%
Executive Officer | RSUs | 2018 Plan
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants		50.00%
Number of annual vesting installments | installment		3
Executive Officer | PSUs
Number of shares
Forfeited / Cancelled (in shares)				(200,000)
Executive Officer | PSUs | 2018 Plan
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants		25.00%
Number of annual vesting installments | installment		3
Executive Officer | MPSUs | 2018 Plan
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants		25.00%
Executive Officer | Arlo | RSUs
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants			50.00%
Stock awards, annual vesting installments (as a percentage)		50.00%
Executive Officer | Arlo | PSUs
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants			25.00%
Stock awards, annual vesting installments (as a percentage)		25.00%
Executive Officer | Arlo | MPSUs
Weighted Average Grant Date Fair Value Per Share
Percentage of total grants			25.00%
Stock awards, annual vesting installments (as a percentage)		25.00%
Chief Financial Officer | RSUs
Number of shares
Forfeited / Cancelled (in shares)	(7,000)
Chief Financial Officer | MPSUs
Number of shares
Forfeited / Cancelled (in shares)	(54,000)
Chief Financial Officer | Arlo | RSUs
Number of shares
Vested (in shares)				(43,000)
Chief Financial Officer | NETGEAR | RSUs
Number of shares
Vested (in shares)				(15,000)