Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Insurance and Derivatives (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Insurance and Derivatives (Details)
$ in Millions
12 Months Ended
Dec. 27, 2018
USD ($)
Insurance Loss Reserves [Abstract]  
Maximum loss before additional coverage applies $ 8.6