Pension and Other Post-retirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 24, 2016	Jul. 26, 2015	Jul. 24, 2016	Jul. 26, 2015
Net periodic cost of defined benefit plans
Employer contributions	$ 25,700	$ 22,700
Pension Benefits
Net periodic cost of defined benefit plans
Service cost	6,645	7,198	$ 20,005	$ 21,596
Interest cost	13,674	13,131	41,030	39,392
Expected return on plan assets	(21,716)	(22,198)	(65,071)	(66,594)
Amortization of prior service cost	(1,037)	(1,220)	(3,169)	(3,659)
Recognized actuarial loss (gain)	4,787	4,625	13,958	13,851
Curtailment gain	(4,438)		(4,438)
Net periodic cost	(2,085)	1,536	2,315	4,586
Post-retirement Benefits
Net periodic cost of defined benefit plans
Service cost	317	442	950	1,327
Interest cost	3,236	3,337	9,708	10,009
Amortization of prior service cost	(1,050)	(335)	(3,151)	(1,003)
Recognized actuarial loss (gain)	392		1,176	(1)
Net periodic cost	$ 2,895	$ 3,444	$ 8,683	$ 10,332