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Stock-Based Compensation Plans (Tables)
 12 Months Ended
Sep. 02, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of RSU Transactions
The following table summarizes RSU transactions during 2018:
 
Number of
Units
(in 000’s)
 
Weighted-Average
Grant Date Fair
Value
Outstanding at the end of 2017
8,199

 
$
128.15

Granted
3,722

 
156.19

Vested and delivered
(4,088
)
 
129.49

Forfeited
(255
)
 
138.57

Outstanding at the end of 2018
7,578

 
$
140.85
Summary of Stock-Based Compensation Expense and Related Tax Benefits
The following table summarizes stock-based compensation expense and the related tax benefits under the Company’s plans:
 
2018
 
2017
 
2016
Stock-based compensation expense before income taxes
$
544

 
$
514

 
$
459

Less income tax benefit (1)
(116
)
 
(167
)
 
(150
)
Stock-based compensation expense, net of income taxes
$
428

 
$
347

 
$
309

_______________
(1)
In 2018, the income tax benefit reflects the reduction in the U.S. federal statutory income tax rate from 35% to 21%.