Employee Benefit Plans (Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Components of net periodic benefit cost
Service cost	$ 13	$ 11	$ 12
Interest cost	8	10	11
Expected return on plan assets	(22)	(20)	(20)
Amortization of actuarial loss and prior service credit	12	7	3
Net periodic benefit cost	$ 11	$ 8	$ 6
Weighted average assumptions
Discount rate	1.23%	1.98%	2.16%
Expected long-term return on assets	5.10%	5.40%	5.41%
Rate of compensation increase	2.69%	2.74%	2.66%