XML 115 R97.htm IDEA: XBRL DOCUMENT v3.5.0.2
Pension and Other Employee Benefits - Schedule of Weighted-Average Net Periodic Benefit Cost Assumptions (Detail)
12 Months Ended
Sep. 24, 2016
Sep. 26, 2015
Sep. 27, 2014
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]      
Discount rate 1.30% 2.05% 2.95%
Expected return on plan assets 0.00% 0.00% 0.00%
Rate of compensation increase 0.00% 0.00% 0.00%