Annual report pursuant to Section 13 and 15(d)

Retirement Benefit Plans (Details) (Narrative)

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Retirement Benefit Plans (Details) (Narrative) - USD ($)
$ in Millions
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Retirement Benefits [Abstract]      
Employer matching contribution, percent of match 75.00%    
Maximum allowed percentage of employee's pre-tax salary contributed to the 401(k) plan 6.00%    
Amount of company contributions to the 401(k) plan $ 25 $ 21 $ 18