Stockholders' Equity (EPS from Continuing Operations Attributable to Raytheon Company Common Stockholders and Unvested Share-Based Payment Awards) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic EPS attributable to Raytheon Company common stockholders:
Distributed earnings									$ 2.19	$ 1.98	$ 1.71
Undistributed earnings									$ 3.78	$ 3.69	$ 3.54
Total	$ 1.46	$ 1.51	$ 1.50	$ 1.50	$ 1.41	$ 1.51	$ 1.41	$ 1.33	$ 5.97	$ 5.67	$ 5.25
Diluted EPS attributable to Raytheon Company common stockholders:
Distributed earnings									$ 2.18	$ 1.98	$ 1.70
Undistributed earnings									$ 3.78	$ 3.67	$ 3.52
Total	$ 1.46	$ 1.51	$ 1.50	$ 1.49	$ 1.41	$ 1.51	$ 1.41	$ 1.33	$ 5.96	$ 5.65	$ 5.22