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Segment Information
 12 Months Ended
Aug. 30, 2018
Segment Reporting [Abstract]  
Segment Information
Segment Information

Segment information reported herein is consistent with how it is reviewed and evaluated by our chief operating decision maker. We have the following four business units, which are our reportable segments:

Compute and Networking Business Unit ("CNBU"): Includes memory products sold into cloud server, enterprise, client, graphics, and networking markets.
Mobile Business Unit ("MBU"): Includes memory products sold into smartphone and other mobile-device markets.
Storage Business Unit ("SBU"): Includes SSDs and component-level solutions sold into enterprise and cloud, client, and consumer SSD markets, other discrete storage products sold in component and wafer forms to the removable storage markets, and sales of 3D XPoint memory.
Embedded Business Unit ("EBU"): Includes memory and storage products sold into automotive, industrial, and consumer markets.

Certain operating expenses directly associated with the activities of a specific segment are charged to that segment. Other indirect operating income and expenses are generally allocated to segments based on their respective percentage of cost of goods sold or forecasted wafer production. We do not identify or report internally our assets (other than goodwill) or capital expenditures by segment, nor do we allocate gains and losses from equity method investments, interest, other non-operating income or expense items, or taxes to segments. As of August 30, 2018 and August 31, 2017, CNBU, MBU, SBU, and EBU had goodwill of $832 million, $198 million, $101 million, and $97 million, respectively.
For the year ended
 
2018
 
2017
 
2016
Net sales
 
 
 
 
 
 
CNBU
 
$
15,252

 
$
8,624

 
$
4,529

MBU
 
6,579

 
4,424

 
2,569

SBU
 
5,022

 
4,514

 
3,262

EBU
 
3,479

 
2,695

 
1,939

All Other
 
59

 
65

 
100

 
 
$
30,391

 
$
20,322

 
$
12,399

 
 
 
 
 
 
 
Operating income (loss)
 
 
 
 
 
 
CNBU
 
$
9,773

 
$
3,755

 
$
(25
)
MBU
 
3,033

 
927

 
97

SBU
 
964

 
552

 
(123
)
EBU
 
1,473

 
975

 
473

All Other
 
—

 
23

 
28

 
 
$
15,243

 
$
6,232

 
$
450

 
 
 
 
 
 
 
Unallocated
 
 
 
 
 
 
Stock-based compensation
 
$
(198
)
 
$
(215
)
 
$
(191
)
Restructure and asset impairments
 
(28
)
 
(18
)
 
(67
)
Flow-through of Inotera inventory step up
 
—

 
(107
)
 
—

Other
 
(23
)
 
(24
)
 
(24
)
 
 
$
(249
)
 
$
(364
)
 
$
(282
)
 
 
 
 
 
 
 
Operating income
 
$
14,994


$
5,868

 
$
168



Depreciation and amortization expense included in operating income was as follows:
For the year ended
 
2018
 
2017
 
2016
CNBU
 
$
1,755

 
$
1,344

 
$
1,141

MBU
 
1,077

 
926

 
580

SBU
 
1,295

 
1,083

 
844

EBU
 
603

 
484

 
379

All Other
 
18

 
13

 
20

Unallocated
 
11

 
11

 
16

 
 
$
4,759

 
$
3,861

 
$
2,980