General (Policies)	9 Months Ended
Sep. 26, 2020
General
Fiscal Periods	Fiscal Periods The three and nine months ended September 26, 2020 and September 28, 2019 consisted of thirteen-week and thirty-nine week periods, respectively.
Accounting Guidance Update	Accounting Guidance Update Credit Losses In the first quarter of 2020, using the modified retrospective approach, we adopted amended accounting guidance that requires credit losses on financial instruments, including trade receivables, to be measured based on the expected credit loss model instead of the incurred loss model. The expected credit loss model requires us to consider forward-looking information to estimate our allowance for credit losses. Our adoption of this guidance did not have a material impact on our financial position, results of operations or cash flows.

Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=108774443&loc=d3e5291-111683

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