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Commitments and Contingencies (Tables)
 9 Months Ended
May 01, 2021
Commitments and Contingencies Disclosure [Abstract]  
Purchase Commitments with Contract Manufacturers and Suppliers
The following table summarizes our purchase commitments with contract manufacturers and suppliers (in millions):
Commitments by PeriodMay 1,
2021		July 25,
2020
Less than 1 year$6,461 $3,994 
1 to 3 years1,615 412 
3 to 5 years1,733 — 
Total$9,809 $4,406 
Compensation Expense Related to Business Acquisitions
The following table summarizes the compensation expense related to acquisitions (in millions):
Three Months EndedNine Months Ended
May 1, 2021April 25, 2020May 1, 2021April 25, 2020
Compensation expense related to acquisitions$66 $61 $182 $172 
Schedule of Product Warranty Liability
The following table summarizes the activity related to the product warranty liability (in millions):
Nine Months Ended
May 1,
2021		April 25,
2020
Balance at beginning of period$331 $342 
Provisions for warranties issued382 423 
Adjustments for pre-existing warranties1 (5)
Settlements (373)(436)
Balance at end of period$341 $324 
Schedule of Guarantor Obligations The aggregate amounts of financing guarantees outstanding at May 1, 2021 and July 25, 2020, representing the total maximum potential future payments under financing arrangements with third parties along with the related deferred revenue, are summarized in the following table (in millions):
May 1,
2021		July 25,
2020
Maximum potential future payments relating to financing guarantees:
Channel partner$165 $198 
End user6 9 
Total$171 $207 
Deferred revenue associated with financing guarantees:
Channel partner$(16)$(19)
End user(6)(9)
Total$(22)$(28)
Total$149 $179