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Property, Plant, and Equipment
3 Months Ended
Nov. 28, 2019
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment
Property, Plant, and Equipment
As ofNovember 28,
2019
August 29,
2019
Land$352  $352  
Buildings11,441  10,931  
Equipment (1)
45,637  44,051  
Construction in progress (2)
1,795  1,700  
Software793  790  
 60,018  57,824  
Accumulated depreciation(30,666) (29,584) 
 $29,352  $28,240  
(1)Included costs related to equipment not placed into service of $1.80 billion as of November 28, 2019 and $2.33 billion as of August 29, 2019.
(2)Included building-related construction, tool installation, and software costs for assets not placed into service.

We periodically assess the estimated useful lives of our property, plant, and equipment. Based on our assessment of planned technology node transitions, capital spending, and re-use rates, we revised the estimated useful lives of equipment in our NAND wafer fabrication facilities and our research and development ("R&D") facilities from five years to seven years as of the beginning in the first quarter of 2020. As a result, we estimate the reduction in non-cash depreciation expense benefited operating income and net income by approximately $74 million and diluted earnings per share by approximately $0.07 for the first quarter of 2020.