Earnings per Share (EPS) (Tables)
9 Months Ended
Oct. 02, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
EPS from continuing operations attributable to Raytheon Company common stockholders and unvested stock-based payment awards was as follows: 
 
 
Three Months Ended
 
Nine Months Ended
 
 
Oct 2, 2016
 
Sep 27, 2015
 
Oct 2, 2016
 
Sep 27, 2015
Basic EPS attributable to Raytheon Company common stockholders:
 
 
 
 
 
 
 
 
Distributed earnings
 
$
0.73

 
$
0.69

 
$
2.19

 
$
2.03

Undistributed earnings
 
1.06

 
0.78

 
3.41

 
2.88

Total
 
$
1.79

 
$
1.47

 
$
5.60

 
$
4.91

Diluted EPS attributable to Raytheon Company common stockholders:
 
 
 
 
 
 
 
 
Distributed earnings
 
$
0.73

 
$
0.68

 
$
2.19

 
$
2.03

Undistributed earnings
 
1.06

 
0.79

 
3.41

 
2.88

Total
 
$
1.79

 
$
1.47

 
$
5.60

 
$
4.91

Income Attributable to Participating Securities
Income attributable to participating securities was as follows:
 
Three Months Ended
 
Nine Months Ended
(In millions)
Oct 2, 2016
 
Sep 27, 2015
 
Oct 2, 2016
 
Sep 27, 2015
Income from continuing operations attributable to participating securities
$
7

 
$
6

 
$
23

 
$
24

Income (loss) from discontinued operations, net of tax attributable to participating securities(1)
—

 
—

 
—

 
—

Net income attributable to participating securities
$
7

 
$
6

 
$
23

 
$
24

(1)
Income (loss) from discontinued operations, net of tax attributable to participating securities was income of less than $1 million and a loss of less than $1 million for the third quarters of 2016 and 2015, respectively, and income of less than $1 million for the first nine months of 2016 and 2015.

Weighted-Average Shares Outstanding for Basic and Diluted EPS
The weighted-average shares outstanding for basic and diluted EPS were as follows: 
 
Three Months Ended
 
Nine Months Ended
(In millions)
Oct 2, 2016
 
Sep 27, 2015
 
Oct 2, 2016
 
Sep 27, 2015
Shares for basic EPS(1)
295.2

 
303.9

 
297.2

 
305.8

Dilutive effect of LTPP and RSUs
0.3

 
0.4

 
0.3

 
0.4

Shares for diluted EPS
295.5

 
304.3

 
297.5

 
306.2

(1)
Includes 3.7 million and 4.3 million participating securities for the three months ended October 2, 2016 and September 27, 2015, respectively, and 4.1 million and 4.9 million participating securities for the nine months ended October 2, 2016 and September 27, 2015, respectively.