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Commitments and Contingencies (Tables)
 3 Months Ended
Oct. 26, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Purchase Commitments
The following table summarizes our purchase commitments with contract manufacturers and suppliers (in millions):
Commitments by Period
October 26,
2019
 
July 27,
2019
Less than 1 year
$
3,903

 
$
4,239

1 to 3 years
633

 
728

Total
$
4,536

 
$
4,967
Compensation Expense Related to Business Acquisitions
The following table summarizes the compensation expense related to acquisitions (in millions):
 
Three Months Ended
 
October 26, 2019
 
October 27, 2018
Compensation expense related to acquisitions
$
61

 
$
109
Schedule of Product Warranty Liability
The following table summarizes the activity related to the product warranty liability (in millions):
 
Three Months Ended
 
October 26,
2019
 
October 27,
2018
Balance at beginning of period
$
342

 
$
359

Provisions for warranties issued
140

 
156

Adjustments for pre-existing warranties
(3
)
 
(3
)
Settlements
(149
)
 
(145
)
Balance at end of period
$
330

 
$
367
Schedule of Guarantor Obligations The aggregate amounts of financing guarantees outstanding at October 26, 2019 and July 27, 2019, 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):
 
October 26,
2019
 
July 27,
2019
Maximum potential future payments relating to financing guarantees:
 
 
 
Channel partner
$
148

 
$
197

End user
15

 
21

Total
$
163

 
$
218

Deferred revenue associated with financing guarantees:
 
 
 
Channel partner
$
(61
)
 
$
(62
)
End user
(15
)
 
(15
)
Total
$
(76
)
 
$
(77
)
Maximum potential future payments relating to financing guarantees, net of associated deferred revenue
$
87

 
$
141