Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Jan. 01, 2019	Jan. 01, 2018
Accounting Standards Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax asset			$ 21.1
Accounting Standards Update 2016-16 | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in tax expense	$ 1.3
Minimum | Accounting Standards Update 2016-02 | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ASU 2016-02 expected right-to-use assets impact		$ 45.0
ASU 2016-02 expected lease liability impact		50.0
Maximum | Accounting Standards Update 2016-02 | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ASU 2016-02 expected right-to-use assets impact		55.0
ASU 2016-02 expected lease liability impact		60.0
Arlo | Minimum | Accounting Standards Update 2016-02 | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ASU 2016-02 expected right-to-use assets impact		11.0
ASU 2016-02 expected lease liability impact		12.0
Arlo | Maximum | Accounting Standards Update 2016-02 | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ASU 2016-02 expected right-to-use assets impact		14.0
ASU 2016-02 expected lease liability impact		$ 15.0