Employee Savings Plan - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) Day	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Employee Savings Plan [Abstract]
Service Period Eligible to Participate for Employee Savings Plan | Day	30
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	4.00%
Defined Benefit Plan, Plan Assets, Contributions by Employer | $	$ 31.2	$ 22.8	$ 22.8