Business Segment Reporting (Disaggregation of Revenue) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Sales, net	$ 7,842,000,000	$ 7,446,000,000	$ 7,159,000,000	$ 6,729,000,000	$ 7,360,000,000	$ 6,806,000,000	$ 6,625,000,000	$ 6,267,000,000	$ 29,176,000,000	$ 27,058,000,000	$ 25,348,000,000
Corporate [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(1,712,000,000)	(1,514,000,000)	(1,423,000,000)
Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(1,713,000,000)	(1,524,000,000)	(1,458,000,000)
Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									29,177,000,000	27,068,000,000	25,383,000,000
Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									16,092,000,000	15,118,000,000	14,866,000,000
Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									13,084,000,000	11,940,000,000	10,482,000,000
Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									20,111,000,000	18,447,000,000	16,860,000,000
U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									483,000,000	506,000,000	403,000,000
Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									4,198,000,000	3,502,000,000	3,311,000,000
Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									4,384,000,000	4,603,000,000	4,774,000,000
UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									20,594,000,000	18,953,000,000	17,263,000,000
UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									7,982,000,000	7,377,000,000	7,160,000,000
UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									12,129,000,000	11,070,000,000	9,700,000,000
UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									457,000,000	484,000,000	390,000,000
UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									26,000,000	22,000,000	13,000,000
Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									2,721,000,000	2,723,000,000	2,721,000,000
Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,069,000,000	1,034,000,000	871,000,000
Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									198,000,000	207,000,000	262,000,000
Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,374,000,000	1,363,000,000	1,441,000,000
Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									80,000,000	119,000,000	147,000,000
Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									4,095,000,000	3,986,000,000	4,063,000,000
Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,668,000,000	1,558,000,000	1,646,000,000
Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									406,000,000	267,000,000	207,000,000
Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,929,000,000	2,065,000,000	2,210,000,000
Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									92,000,000	96,000,000	0
All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									1,766,000,000	1,396,000,000	1,301,000,000
All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									762,000,000	333,000,000	218,000,000
All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									95,000,000	103,000,000	107,000,000
All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									851,000,000	904,000,000	930,000,000
All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									58,000,000	56,000,000	46,000,000
Integrated Defense Systems
Disaggregation of Revenue [Line Items]
Sales, net									6,840,000,000	6,115,000,000	5,740,000,000
Integrated Defense Systems | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(87,000,000)	(65,000,000)	(64,000,000)
Integrated Defense Systems | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Integrated Defense Systems | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									6,927,000,000	6,180,000,000	5,804,000,000
Integrated Defense Systems | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									4,488,000,000	4,005,000,000	3,761,000,000
Integrated Defense Systems | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,352,000,000	2,110,000,000	1,979,000,000
Integrated Defense Systems | Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,751,000,000	2,524,000,000	2,319,000,000
Integrated Defense Systems | U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									6,000,000	6,000,000	7,000,000
Integrated Defense Systems | Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,879,000,000	1,465,000,000	1,554,000,000
Integrated Defense Systems | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,204,000,000	2,120,000,000	1,860,000,000
Integrated Defense Systems | UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									2,757,000,000	2,530,000,000	2,326,000,000
Integrated Defense Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									897,000,000	818,000,000	812,000,000
Integrated Defense Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,854,000,000	1,706,000,000	1,507,000,000
Integrated Defense Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									6,000,000	5,000,000	6,000,000
Integrated Defense Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	1,000,000	1,000,000
Integrated Defense Systems | Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									1,041,000,000	1,096,000,000	1,046,000,000
Integrated Defense Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									174,000,000	189,000,000	167,000,000
Integrated Defense Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									70,000,000	79,000,000	138,000,000
Integrated Defense Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									719,000,000	711,000,000	596,000,000
Integrated Defense Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									78,000,000	117,000,000	145,000,000
Integrated Defense Systems | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									2,251,000,000	2,156,000,000	2,199,000,000
Integrated Defense Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									740,000,000	849,000,000	1,066,000,000
Integrated Defense Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									290,000,000	170,000,000	154,000,000
Integrated Defense Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,221,000,000	1,137,000,000	979,000,000
Integrated Defense Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Integrated Defense Systems | All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									791,000,000	333,000,000	169,000,000
Integrated Defense Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									555,000,000	151,000,000	7,000,000
Integrated Defense Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									50,000,000	27,000,000	22,000,000
Integrated Defense Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									176,000,000	145,000,000	128,000,000
Integrated Defense Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									10,000,000	10,000,000	12,000,000
Intelligence, Information and Services
Disaggregation of Revenue [Line Items]
Sales, net									6,451,000,000	6,056,000,000	5,511,000,000
Intelligence, Information and Services | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(700,000,000)	(666,000,000)	(666,000,000)
Intelligence, Information and Services | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Intelligence, Information and Services | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									7,151,000,000	6,722,000,000	6,177,000,000
Intelligence, Information and Services | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,865,000,000	1,834,000,000	1,842,000,000
Intelligence, Information and Services | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									4,586,000,000	4,222,000,000	3,669,000,000
Intelligence, Information and Services | Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									5,496,000,000	5,118,000,000	4,666,000,000
Intelligence, Information and Services | U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									144,000,000	136,000,000	139,000,000
Intelligence, Information and Services | Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									316,000,000	315,000,000	256,000,000
Intelligence, Information and Services | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									495,000,000	487,000,000	450,000,000
Intelligence, Information and Services | UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									5,640,000,000	5,254,000,000	4,805,000,000
Intelligence, Information and Services | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,035,000,000	1,008,000,000	1,090,000,000
Intelligence, Information and Services | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									4,461,000,000	4,110,000,000	3,576,000,000
Intelligence, Information and Services | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									122,000,000	118,000,000	130,000,000
Intelligence, Information and Services | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									22,000,000	18,000,000	9,000,000
Intelligence, Information and Services | Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									463,000,000	486,000,000	425,000,000
Intelligence, Information and Services | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									245,000,000	243,000,000	181,000,000
Intelligence, Information and Services | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									37,000,000	45,000,000	51,000,000
Intelligence, Information and Services | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									181,000,000	198,000,000	193,000,000
Intelligence, Information and Services | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Intelligence, Information and Services | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									72,000,000	40,000,000	37,000,000
Intelligence, Information and Services | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									12,000,000	20,000,000	18,000,000
Intelligence, Information and Services | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									21,000,000	5,000,000	1,000,000
Intelligence, Information and Services | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									39,000,000	15,000,000	18,000,000
Intelligence, Information and Services | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Intelligence, Information and Services | All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									276,000,000	276,000,000	244,000,000
Intelligence, Information and Services | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,000,000	2,000,000	3,000,000
Intelligence, Information and Services | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	2,000,000
Intelligence, Information and Services | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									230,000,000	230,000,000	209,000,000
Intelligence, Information and Services | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									45,000,000	44,000,000	30,000,000
Missile Systems
Disaggregation of Revenue [Line Items]
Sales, net									8,516,000,000	8,137,000,000	7,655,000,000
Missile Systems | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(210,000,000)	(161,000,000)	(132,000,000)
Missile Systems | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Missile Systems | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									8,726,000,000	8,298,000,000	7,787,000,000
Missile Systems | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									5,327,000,000	5,209,000,000	5,495,000,000
Missile Systems | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									3,189,000,000	2,928,000,000	2,160,000,000
Missile Systems | Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									6,161,000,000	5,628,000,000	4,905,000,000
Missile Systems | U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									33,000,000	41,000,000	1,000,000
Missile Systems | Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,325,000,000	1,180,000,000	1,102,000,000
Missile Systems | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									997,000,000	1,288,000,000	1,647,000,000
Missile Systems | UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									6,194,000,000	5,669,000,000	4,906,000,000
Missile Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									3,175,000,000	2,953,000,000	2,914,000,000
Missile Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,986,000,000	2,675,000,000	1,991,000,000
Missile Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									33,000,000	41,000,000	1,000,000
Missile Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Missile Systems | Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									716,000,000	685,000,000	784,000,000
Missile Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									487,000,000	450,000,000	410,000,000
Missile Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									58,000,000	61,000,000	64,000,000
Missile Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									169,000,000	173,000,000	309,000,000
Missile Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,000,000	1,000,000	1,000,000
Missile Systems | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									1,289,000,000	1,356,000,000	1,406,000,000
Missile Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									594,000,000	452,000,000	371,000,000
Missile Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									11,000,000	23,000,000	22,000,000
Missile Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									592,000,000	785,000,000	1,013,000,000
Missile Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									92,000,000	96,000,000	0
Missile Systems | All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									317,000,000	427,000,000	559,000,000
Missile Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									138,000,000	124,000,000	157,000,000
Missile Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									37,000,000	70,000,000	78,000,000
Missile Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									139,000,000	231,000,000	320,000,000
Missile Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									3,000,000	2,000,000	4,000,000
Space and Airborne Systems
Disaggregation of Revenue [Line Items]
Sales, net									6,741,000,000	6,152,000,000	5,890,000,000
Space and Airborne Systems | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(686,000,000)	(596,000,000)	(540,000,000)
Space and Airborne Systems | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Space and Airborne Systems | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									7,427,000,000	6,748,000,000	6,430,000,000
Space and Airborne Systems | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									3,801,000,000	3,486,000,000	3,229,000,000
Space and Airborne Systems | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,940,000,000	2,666,000,000	2,661,000,000
Space and Airborne Systems | Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									5,508,000,000	5,045,000,000	4,847,000,000
Space and Airborne Systems | U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									124,000,000	114,000,000	53,000,000
Space and Airborne Systems | Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									678,000,000	542,000,000	399,000,000
Space and Airborne Systems | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									431,000,000	451,000,000	591,000,000
Space and Airborne Systems | UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									5,632,000,000	5,159,000,000	4,900,000,000
Space and Airborne Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,696,000,000	2,480,000,000	2,233,000,000
Space and Airborne Systems | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									2,812,000,000	2,565,000,000	2,614,000,000
Space and Airborne Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									121,000,000	111,000,000	51,000,000
Space and Airborne Systems | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									3,000,000	3,000,000	2,000,000
Space and Airborne Systems | Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									434,000,000	386,000,000	407,000,000
Space and Airborne Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									163,000,000	152,000,000	113,000,000
Space and Airborne Systems | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									33,000,000	22,000,000	9,000,000
Space and Airborne Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									238,000,000	211,000,000	284,000,000
Space and Airborne Systems | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	1,000,000	1,000,000
Space and Airborne Systems | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									449,000,000	401,000,000	396,000,000
Space and Airborne Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									322,000,000	237,000,000	191,000,000
Space and Airborne Systems | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									84,000,000	69,000,000	30,000,000
Space and Airborne Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									43,000,000	95,000,000	175,000,000
Space and Airborne Systems | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Space and Airborne Systems | All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									226,000,000	206,000,000	187,000,000
Space and Airborne Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									68,000,000	56,000,000	51,000,000
Space and Airborne Systems | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									8,000,000	6,000,000	5,000,000
Space and Airborne Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									150,000,000	144,000,000	131,000,000
Space and Airborne Systems | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint
Disaggregation of Revenue [Line Items]
Sales, net									628,000,000	598,000,000	552,000,000
Forcepoint | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(29,000,000)	(26,000,000)	(21,000,000)
Forcepoint | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									(1,000,000)	(10,000,000)	(35,000,000)
Forcepoint | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Sales, net									658,000,000	634,000,000	608,000,000
Forcepoint | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									611,000,000	584,000,000	539,000,000
Forcepoint | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									17,000,000	14,000,000	13,000,000
Forcepoint | Sales to the U.S. government, excluding FMS sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									195,000,000	132,000,000	123,000,000
Forcepoint | U.S. direct commercial sales and other U.S. sales [Member]
Disaggregation of Revenue [Line Items]
Sales, net									176,000,000	209,000,000	203,000,000
Forcepoint | Foreign military sales through the U.S. government [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member]
Disaggregation of Revenue [Line Items]
Sales, net									257,000,000	257,000,000	226,000,000
Forcepoint | UNITED STATES
Disaggregation of Revenue [Line Items]
Sales, net									371,000,000	341,000,000	326,000,000
Forcepoint | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									179,000,000	118,000,000	111,000,000
Forcepoint | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									16,000,000	14,000,000	12,000,000
Forcepoint | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									175,000,000	209,000,000	202,000,000
Forcepoint | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									1,000,000	0	1,000,000
Forcepoint | Asia/Pacific
Disaggregation of Revenue [Line Items]
Sales, net									67,000,000	70,000,000	59,000,000
Forcepoint | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									67,000,000	70,000,000	59,000,000
Forcepoint | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Sales, net									34,000,000	33,000,000	25,000,000
Forcepoint | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									34,000,000	33,000,000	25,000,000
Forcepoint | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | All Other (Principally Europe)
Disaggregation of Revenue [Line Items]
Sales, net									156,000,000	154,000,000	142,000,000
Forcepoint | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Forcepoint | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									156,000,000	154,000,000	142,000,000
Forcepoint | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | UNITED STATES | Sales to the U.S. government, excluding FMS sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | UNITED STATES | U.S. direct commercial sales and other U.S. sales [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Asia/Pacific | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Asia/Pacific | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Middle East and North Africa | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | Middle East and North Africa | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | All Other (Principally Europe) | Foreign military sales through the U.S. government [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Corporate [Member] | All Other (Principally Europe) | Foreign direct commercial sales and other foreign sales, excluding Foreign Military Sales through U.S. Gov [Member] | Cost-type Contract [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Operating Segments [Member] | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Acquisition Accounting Adjustment [Member]
Disaggregation of Revenue [Line Items]
Sales, net									0	0	0
Acquisition Accounting Adjustment [Member] | Segment Reconciling Items [Member]
Disaggregation of Revenue [Line Items]
Sales, net									$ (1,000,000)	$ (10,000,000)	$ (35,000,000)