Changes in Estimates Under Percentage of Completion (Tables)
 9 Months Ended
Oct. 02, 2016
Accounting Policies [Abstract]  
Net EAC adjustments [Table Text Block]
Net EAC adjustments had the following impact on our operating results:
 
Three Months Ended
 
Nine Months Ended
(In millions, except per share amounts)
Oct 2, 2016
 
Sep 27, 2015
 
Oct 2, 2016
 
Sep 27, 2015
Operating income
$
114

 
$
84

 
$
269

 
$
245

Income from continuing operations attributable to Raytheon Company
74

 
54

 
187

 
159

Diluted earnings per share (EPS) from continuing operations attributable to Raytheon Company
$
0.25

 
$
0.18

 
$
0.63

 
$
0.52