SIGNIFICANT ACCOUNTING POLICY UPDATES (Details)	3 Months Ended			6 Months Ended
	Jun. 24, 2018 USD ($) program $ / shares	Jun. 25, 2017 USD ($) $ / shares	Mar. 26, 2017 USD ($) $ / shares	Jun. 24, 2018 USD ($) program contract $ / shares	Jun. 25, 2017 USD ($) $ / shares	Mar. 25, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Number of types of contracts | contract				3
Performance obligation satisfied in previous period	$ 540,000,000	$ 540,000,000		$ 955,000,000	$ 920,000,000
Customer receivables sold	124,000,000	365,000,000		227,000,000	365,000,000
Gains or losses related to sales of receivables	0	0		0	0
Contracts Accounted for under Percentage of Completion
Disaggregation of Revenue [Line Items]
Increase in operating profit due to profit rate adjustments	465,000,000	515,000,000		885,000,000	810,000,000
Increase in net earnings due to profit rate adjustments	$ 367,000,000	$ 335,000,000		$ 699,000,000	$ 527,000,000
Increase in diluted earnings per common share due to profit rate adjustments (in dollars per share) | $ / shares	$ 1.28	$ 1.15		$ 2.43	$ 1.80
EADGE-T
Disaggregation of Revenue [Line Items]
Contract loss incurred, gross			$ 120,000,000
Contract loss incurred, after tax			$ 74,000,000
Contract loss incurred, earnings per share (in dollars per share) | $ / shares			$ 0.25
Cumulative losses on development	$ 260,000,000			$ 260,000,000		$ 260,000,000
LM 2100 Project
Disaggregation of Revenue [Line Items]
Contract loss incurred, gross	40,000,000			75,000,000
Contract loss incurred, after tax	$ 30,000,000			$ 56,000,000
Contract loss incurred, earnings per share (in dollars per share) | $ / shares	$ 0.10			$ 0.20
Cumulative losses on development	$ 380,000,000			$ 380,000,000
Warrior Capability Sustainment Program
Disaggregation of Revenue [Line Items]
Contract loss incurred, gross				85,000,000
Contract loss incurred, after tax				$ 64,000,000
Contract loss incurred, earnings per share (in dollars per share) | $ / shares				$ 0.22
Cumulative losses on development	$ 140,000,000			$ 140,000,000
Space
Disaggregation of Revenue [Line Items]
Number of commercial satellite programs with performance issues | program	2			2