Significant Accounting Policies and Recent Accounting Standards (Details) $ in Millions	Sep. 13, 2019 USD ($)	Jun. 29, 2019	Mar. 20, 2020 USD ($)	Feb. 04, 2020 USD ($)
Airport Security and Automation Business | Discontinued Operations, Held-for-sale | Aviation Systems
Business Combination, Separately Recognized Transactions [Line Items]
Cash price on sale of business				$ 1
EOTech Business | Discontinued Operations, Held-for-sale | Communication Systems
Business Combination, Separately Recognized Transactions [Line Items]
Cash price on sale of business			$ 42
L3Harris
Business Combination, Separately Recognized Transactions [Line Items]
Exchange ratio		1.30
L3Harris | Harris Night Vision | Discontinued operations, Disposed of by Sale
Business Combination, Separately Recognized Transactions [Line Items]
Cash proceeds from sale of business, after selling costs and estimated price adjustments	$ 346
L3Harris | Harris Night Vision | Discontinued operations, Disposed of by Sale | Other non-reportable business segments
Business Combination, Separately Recognized Transactions [Line Items]
Cash price on sale of business	350
Cash proceeds from sale of business, after selling costs and estimated price adjustments	$ 343
L3Harris | Former harris shareholders
Business Combination, Separately Recognized Transactions [Line Items]
Percentage of voting interests acquired		54.00%
L3Harris | Former L3 shareholders
Business Combination, Separately Recognized Transactions [Line Items]
Percentage of voting interests acquired		46.00%