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Shareholders' Equity - (Share Repurchases) (Details) - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2018	Dec. 30, 2020	Dec. 25, 2019	Dec. 26, 2018	Dec. 27, 2017	Dec. 28, 2016
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)		1,700
Payments for treasury stock		$ 34,193,000	$ 96,202,000	$ 61,189,000
Stock repurchased during period (in shares)			5,300	3,900
Stock repurchased during period			$ 103,000,000.0
Payments for treasury stock		$ 36,008,000	$ 94,459,000	$ 61,237,000
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)		1,690	4,879	3,901
Payments for treasury stock		$ 34,193,000	$ 96,202,000	$ 61,189,000
Share Repurchase Program 2019
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount			$ 250,000,000
Remaining shares to be repurchased amount		$ 248,000,000.0
Share Repurchase Program 2017
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount					$ 200,000,000
Share Repurchase Program 2016
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount						$ 100,000,000
Accelerated Share Repurchase 2018
Equity, Class of Treasury Stock [Line Items]
Share repurchase, authorized amount	$ 25,000,000
Purchase of treasury stock (in shares)	1,100		400
Payments for treasury stock			$ 6,800,000
Payments for treasury stock	$ 25,000,000
Volume-weighted average price (in dollars per share)			$ 17.04
Accelerated Share Repurchase 2018 | Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Payments for treasury stock	$ 18,200,000
Accelerated Share Repurchase 2018 | Additional Paid-in Capital
Equity, Class of Treasury Stock [Line Items]
Remaining shares to be repurchased amount				$ 6,800,000

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The cash outflow to reacquire common stock during the period.

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