Restructuring and Other Exit Costs - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended | |
---|---|---|---|---|
Apr. 03, 2020 |
Jan. 03, 2020 |
Jan. 01, 2021 |
Apr. 02, 2021 |
|
Restructuring Cost and Reserve [Line Items] | ||||
Restructuring liabilities | $ 34 | $ 24 | ||
Workforce Reduction | COVID-19 | ||||
Restructuring Cost and Reserve [Line Items] | ||||
Restructuring liabilities | 7 | |||
Workforce Reduction | COVID-19 | Aviation Systems | ||||
Restructuring Cost and Reserve [Line Items] | ||||
Restructuring charges | $ 3 | 15 | ||
Workforce Reduction | L3Harris | ||||
Restructuring Cost and Reserve [Line Items] | ||||
Restructuring charges | $ 117 | $ 10 | ||
Restructuring liabilities | $ 17 |