Stockholder's Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Oct. 02, 2019	Sep. 30, 2020	Oct. 01, 2019
Class Of Stock [Line Items]
Capital stock, shares authorized			600,000,000
Preferred stock, shares authorized			40,000,000
Preferred stock, par value per share			$ 0.01
Common stock, shares authorized		560,000,000	560,000,000
Common stock, par value		$ 0.01	$ 0.01
Common stock reserved for issuance	6,350,000
Restricted Stock Units
Class Of Stock [Line Items]
Stock issued in connection with the Spin-Off		1,208,931
Restricted Stock Awards
Class Of Stock [Line Items]
Payroll taxes withheld related to vesting of awards		$ 9.4
Maximum | Restricted Stock Awards
Class Of Stock [Line Items]
Vesting period		4 years
Minimum | Restricted Stock Awards
Class Of Stock [Line Items]
Vesting period		2 years
2019 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock reserved for issuance	5,300,000
Share-based compensation arrangement by share-based payment award, terms of award		Awards issued under the Plan may not have a term greater than ten years from the date of grant.
2019 Equity Incentive Plan | Maximum
Class Of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, expected term		10 years
2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock reserved for issuance	1,050,000
Shares approved for issuance under plan	1,050,000
Plan offering description	At the end of each designated offering period, which occurs every six months on February 15 and August 15, employees can elect to purchase shares of our common stock with contributions of up to 12% of their base pay, accumulated via payroll deductions, at an amount equal to 85% of the lower of our stock price on (i) the first day of the offering period, or (ii) the last day of the offering period.
Employee contributions to purchase Shares, percent of base pay accumulated	12.00%
Percentage of stock price under plan	85.00%