XML 101 R84.htm IDEA: XBRL DOCUMENT v3.19.3
Employee Benefit Plans (Weighted Average Assumptions Used To Determine The Defined Benefit Retirement Plan Obligation) (Details)
12 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Retirement Benefits [Abstract]    
Discount rate 0.72% 1.89%
Expected rate of return on plan assets 5.50% 5.50%
Expected rate of increase in future compensation levels 3.00% 3.00%