Shareholders' Deficit - Share Repurchase (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 30, 2020	Mar. 25, 2020	Jun. 24, 2020	Jun. 30, 2021	Dec. 25, 2019
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)		1,700,000
Purchase of treasury stock		$ 34,200,000	$ 34,193,000
Retirement of shares (in shares)	54,000,000.0
Volume-weighted average price (in dollars per share)	$ 10.26
Treasury stock, at cost, shares (in shares)				0
Share Repurchase Program 2017
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount		$ 200,000,000
Share Repurchase Program 2019
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount					$ 250,000,000
Remaining shares to be repurchased				$ 248,000,000.0