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Business Segment Information (Tables)
 9 Months Ended
Oct. 31, 2014
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information by Segment
The segment information for the periods presented was as follows:
 
Three Months Ended
 
Nine Months Ended
 
October 31,
2014

November 1,
2013
 
October 31,
2014
 
November 1,
2013
 
(in millions)
Revenues:

 

 

 

National Security Solutions
$
906

 
$
1,011

 
$
2,775

 
$
3,107

Health and Engineering
373

 
406

 
1,126

 
1,368

Corporate and Other
(3
)
 
(2
)
 
(7
)
 
(8
)
Intersegment elimination
—

 
(1
)
 
—

 
(3
)
Total revenues
$
1,276

 
$
1,414

 
$
3,894

 
$
4,464

 
 
 
 
 
 
 
 
Operating income (loss):
 
 
 
 
 
 
 
National Security Solutions
$
72

 
$
66

 
$
227

 
$
209

Health and Engineering
4

 
(30
)
 
(455
)
 
2

Corporate and Other
(4
)
 
(41
)
 
(23
)
 
(129
)
Total operating income (loss)
$
72

 
$
(5
)
 
$
(251
)
 
$
82