Description of Company and Summary of Significant Accounting Policies - Customer Display (Details) - Customer Display - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment
Amortization of capitalized display costs	$ 8.7	$ 9.0	$ 8.6
Minimum
Property, Plant and Equipment
Deferred advertising costs, amortization period (years)	3 years
Maximum
Property, Plant and Equipment
Deferred advertising costs, amortization period (years)	4 years