Other Income and Expenses (Narrative) (Details) $ in Millions	Jul. 24, 2021 USD ($)
Other Income and Expenses [Abstract]
Modification partial termination of commercial arrangement, annual payment, amount	$ 75
Modification partial termination of commercial arrangement, present value of payments, amount	581
Modification partial termination of commercial arrangement, pretax contract settlement charge, amount	547
Modification partial termination of commercial arrangement, pretax contract settlement cash charge, amount	5
Modification partial termination of commercial arrangement, pretax contract settlement noncash charge, amount	542
Modification partial termination of commercial arrangement, intangible assets acquired, amount	34
Modification partial termination of commercial arrangement, noncash financing activity, amount	$ 576