Leases (Reported in Balance Sheet) (Details) $ in Millions	Oct. 27, 2019 USD ($)
Operating Lease, Right-of-Use Asset	$ 283
Finance Lease, Right-of-Use Asset	8
Operating Lease, Liability	277
Finance Lease, Liability	10
Property, Plant and Equipment [Member]
Operating Lease, Right-of-Use Asset	0
Finance Lease, Right-of-Use Asset	2
Other Assets [Member]
Operating Lease, Right-of-Use Asset	270
Finance Lease, Right-of-Use Asset	0
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Operating Lease, Right-of-Use Asset	13
Finance Lease, Right-of-Use Asset	6
Operating Lease, Liability, Current	5
Operating Lease, Liability, Noncurrent	9
Finance Lease, Liability, Current	0
Finance Lease, Liability, Noncurrent	7
Short-term Debt [Member]
Operating Lease, Liability, Current	0
Finance Lease, Liability, Current	1
Accrued Liabilities [Member]
Operating Lease, Liability, Current	64
Finance Lease, Liability, Current	0
Long-term Debt [Member]
Operating Lease, Liability, Noncurrent	0
Finance Lease, Liability, Noncurrent	2
Other Liabilities [Member]
Operating Lease, Liability, Noncurrent	199
Finance Lease, Liability, Noncurrent	$ 0