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Segment Information
 12 Months Ended
Aug. 29, 2019
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 client, cloud server, enterprise, 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 storage markets as well as 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 29, 2019 and August 30, 2018, CNBU, MBU, SBU, and EBU had goodwill of $832 million, $198 million, $101 million, and $97 million, respectively.
For the year ended
 
2019
 
2018
 
2017
Revenue
 
 
 
 
 
 
CNBU
 
$
9,968

 
$
15,252

 
$
8,624

MBU
 
6,403

 
6,579

 
4,424

SBU
 
3,826

 
5,022

 
4,514

EBU
 
3,137

 
3,479

 
2,695

All Other
 
72

 
59

 
65

 
 
$
23,406

 
$
30,391

 
$
20,322

 
 
 
 
 
 
 
Operating income (loss)
 
 
 
 
 
 
CNBU
 
$
4,645

 
$
9,773

 
$
3,755

MBU
 
2,606

 
3,033

 
927

SBU
 
(386
)
 
964

 
552

EBU
 
923

 
1,473

 
975

All Other
 
13

 
—

 
23

 
 
7,801

 
15,243

 
6,232

 
 
 
 
 
 
 
Unallocated
 
 
 
 
 
 
Stock-based compensation
 
(243
)
 
(198
)
 
(215
)
Employee severance
 
(116
)
 
—

 
—

Start-up and preproduction costs
 
(58
)
 
—

 
—

Restructure and asset impairments
 
32

 
(28
)
 
(18
)
Flow-through of Inotera inventory step up
 
—

 
—

 
(107
)
Other
 
(40
)
 
(23
)
 
(24
)
 
 
(425
)
 
(249
)
 
(364
)
 
 
 
 
 
 
 
Operating income
 
$
7,376


$
14,994

 
$
5,868



Depreciation and amortization expense included in operating income was as follows:
For the year ended
 
2019
 
2018
 
2017
CNBU
 
$
1,833

 
$
1,755

 
$
1,344

MBU
 
1,235

 
1,077

 
926

SBU
 
1,555

 
1,295

 
1,083

EBU
 
748

 
603

 
484

All Other
 
27

 
18

 
13

Unallocated
 
26

 
11

 
11

 
 
$
5,424

 
$
4,759

 
$
3,861