Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Decrease to selling, general and administrative expenses	$ 10
2010 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2010 Incentive Plan, number of shares authorized		4,750,000
2020 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2010 Incentive Plan, number of shares authorized		1,500,000