Background and Basis of Presentation (Policies)	12 Months Ended
Dec. 27, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting	The consolidated financial statements have been prepared in U.S. dollars and in accordance with accounting principles generally accepted in the U.S. ("GAAP").
Use of Estimates	The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses. Actual results may differ from those estimates.
Consolidation	The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and entities in which they own or control more than 50.0% of the voting shares, or have the ability to control through similar rights. All intercompany balances and transactions have been eliminated in consolidation and all normal recurring adjustments necessary for a fair presentation have been included in the results reported.
Fiscal Period	Fiscal Year The Company reports its results based on a "52-53 week" year ending on the last Friday of December. Fiscal 2019, 2018 and 2017 each consisted of 52 weeks. Unless otherwise indicated, fiscal 2019, 2018 and 2017 refer to the Company's fiscal years ended December 27, 2019, December 28, 2018 and December 29, 2017, respectively.

Background and Basis of Presentation (Policies)

12 Months Ended

Dec. 27, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The consolidated financial statements have been prepared in U.S. dollars and in accordance with accounting principles generally accepted in the U.S. ("GAAP").

Use of Estimates

The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses. Actual results may differ from those estimates.

Consolidation

The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and entities in which they own or control more than 50.0% of the voting shares, or have the ability to control through similar rights. All intercompany balances and transactions have been eliminated in consolidation and all normal recurring adjustments necessary for a fair presentation have been included in the results reported.

Fiscal Period

Fiscal Year

The Company reports its results based on a "52-53 week" year ending on the last Friday of December. Fiscal 2019, 2018 and 2017 each consisted of 52 weeks. Unless otherwise indicated, fiscal 2019, 2018 and 2017 refer to the Company's fiscal years ended December 27, 2019, December 28, 2018 and December 29, 2017, respectively.