Segment Financial Data (Components of Identifiable Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 161,517	$ 139,615
Collins Aerospace Systems [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	70,791	74,049
Pratt & Whitney [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	31,749	31,170
Raytheon Intelligence & Space [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	20,137	0
Raytheon Missiles & Defense
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	29,681	0
Discontinued Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	135	31,823
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	152,358	105,219
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 9,024	$ 2,573