Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Stockholders' Equity (Deficit) - Share Repurchase Program (Details) shares in Millions, $ in Millions		12 Months Ended
	May 14, 2018 USD ($) shares	Dec. 30, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 25, 2016 USD ($) shares	Oct. 09, 2018
Maximum \| Ability to make dividends and distributions based on Leverage Ratio \| Amendment to Credit Agreement
Share repurchase program
Ratio Of Indebtedness To EBITDA					3.75
Common stock repurchase program
Share repurchase program
Stock repurchased during period, shares \| shares		2.7	3.0	2.1
Stock repurchased during period, value \| $		$ 158.0	$ 209.6	$ 122.4
ASR Agreement
Share repurchase program
Stock repurchased during period, shares \| shares	1.7
Stock repurchased during period, value \| $	$ 100.0