Changes in Estimates under Percentage of Completion Contract Accounting (Net EAC adjustments) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Change in Accounting Estimate [Line Items]
Operating income	$ 1,206	$ 1,183	$ 3,495	$ 3,324
Income from continuing operations attributable to Raytheon Company	$ 861	$ 644	$ 2,459	$ 2,077
Diluted earnings per share (EPS) from continuing operations attributable to Raytheon Company	$ 3.08	$ 2.25	$ 8.77	$ 7.23
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating income	$ 105	$ 124	$ 351	$ 368
Income from continuing operations attributable to Raytheon Company	$ 83	$ 98	$ 277	$ 291
Diluted earnings per share (EPS) from continuing operations attributable to Raytheon Company	$ 0.30	$ 0.34	$ 0.99	$ 1.01

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

RAYTHEON CO/ 10-Q