CONTRACT ASSETS AND CONTRACT LIABILITIES - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended		18 Months Ended
	Jan. 03, 2020	Dec. 31, 2021	Jun. 28, 2019	Jan. 01, 2021
Disaggregation of Revenue [Line Items]
U.S. Government's progress payment rate		9000.00%		8000.00%
Unbilled receivable program	$ 4,268	$ 4,825
Recognized revenue related to contract liabilities outstanding at the end of the year	$ 776	930	$ 287	$ 974
Integrated Mission Systems
Disaggregation of Revenue [Line Items]
Unbilled receivable program		$ 323