Segment Information (Tables)

6 Months Ended

Jun. 29, 2018

Disaggregation of Revenue [Line Items]

The tables below present net sales, operating income, depreciation and amortization and total assets by reportable segment.



	Second Quarter Ended						First Half Ended
	June 29, 2018			June 30, 2017			June 29, 2018			June 30, 2017
	(in millions)
Net Sales:
Electronic Systems	$	828		$	789		$	1,630		$	1,549
Aerospace Systems	751			681			1,450			1,382
Communication Systems	563			555			1,062			1,098
Sensor Systems	482			394			894			748
Elimination of intercompany sales	(41		)	(34		)	(82		)	(71		)
Consolidated total	$	2,583		$	2,385		$	4,954		$	4,706
Operating Income:
Electronic Systems	$	113		$	103		$	221		$	193
Aerospace Systems	61			56			118			112
Communication Systems	45			84			82			126
Sensor Systems	54			51			103			100
Segment total	273			294			524			531
Gain on sale of the Crestview & TCS Businesses	48			—			48			—
Consolidated total	$	321		$	294		$	572		$	531
Depreciation and amortization:
Electronic Systems	$	24		$	17		$	43		$	35
Aerospace Systems	12			13			24			24
Communication Systems	11			12			24			24
Sensor Systems	13			12			25			23
Consolidated total	$	60		$	54		$	116		$	106



	June 29, 2018		December 31, 2017
	(in millions)
Total Assets:
Electronic Systems	$	4,990	$	4,796
Aerospace Systems	2,200		2,014
Communication Systems	2,142		2,063
Sensor Systems	2,890		2,706
Corporate	1,308		709
Assets held for sale	—		135
Assets of discontinued operations	—		306
Consolidated total	$	13,530	$	12,729

Revenue by End Customer [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

The tables below present total net sales disaggregated by end customer.



	Second Quarter Ended June 29, 2018
End Customer	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Total DoD	$	443	$	624	$	426	$	240	$	1,733
Other U.S. Government	40		7		24		22		93
Total U.S. Government	483		631		450		262		1,826
Foreign governments ⁽¹⁾	74		103		39		155		371
Commercial — foreign	177		6		25		14		222
Commercial — domestic	78		1		40		45		164
Total	$	812	$	741	$	554	$	476	$	2,583



	First Half Ended June 29, 2018
End Customer	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Total DoD	$	860	$	1,192	$	797	$	446	$	3,295
Other U.S. Government	79		12		48		47		186
Total U.S. Government	939		1,204		845		493		3,481
Foreign governments ⁽¹⁾	142		206		73		281		702
Commercial — foreign	344		14		46		35		439
Commercial — domestic	172		3		83		74		332
Total	$	1,597	$	1,427	$	1,047	$	883	$	4,954

__________________


⁽¹⁾	Includes sales under foreign military sales agreements, which are made directly between the U.S. Government and foreign governments.

Revenue by Contract Type [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

The tables below present total net sales disaggregated by contract type.



	Second Quarter Ended June 29, 2018
Contract Type	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Fixed-price⁽¹⁾	$	680	$	398	$	403	$	391	$	1,872
Cost-plus⁽²⁾	118		292		133		83		626
Time-and-material	14		51		18		2		85
Total sales	$	812	$	741	$	554	$	476	$	2,583



	First Half Ended June 29, 2018
Contract Type	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Fixed-price⁽¹⁾	$	1,344	$	764	$	732	$	724	$	3,564
Cost-plus⁽²⁾	226		561		281		154		1,222
Time-and-material	27		102		34		5		168
Total sales	$	1,597	$	1,427	$	1,047	$	883	$	4,954

__________________


⁽¹⁾	Includes fixed-price incentive fee type contracts, which contributed approximately 1% to the Company's total net sales for quarterly period ended June 29, 2018 and 2% for the first half period ended June 29, 2018.


⁽²⁾	Includes cost-plus award and incentive fee type contracts, which contributed approximately 4% to the Company's total net sales for each of the quarterly and first half periods ended June 29, 2018.

Revenue by Deliverable Type [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

The tables below present total net sales disaggregated by the type of deliverable, which is determined by the Company at the performance obligation level.



	Second Quarter Ended June 29, 2018
Sales by Deliverable Type	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Products	$	578	$	405	$	397	$	406	$	1,786
Services	234		336		157		70		797
Total sales	$	812	$	741	$	554	$	476	$	2,583



	First Half Ended June 29, 2018
Sales by Deliverable Type	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Products	$	1,138	$	777	$	761	$	756	$	3,432
Services	459		650		286		127		1,522
Total sales	$	1,597	$	1,427	$	1,047	$	883	$	4,954

Revenue by Revenue Recognition Method [Member]

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

The tables below present total net sales disaggregated based on the revenue recognition method applied.



	Second Quarter Ended June 29, 2018
Revenue Recognition Method	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Cost to cost method	$	548	$	713	$	455	$	226	$	1,942
Point in time	175		11		76		222		484
Output method	71		1		5		11		88
Billing method	18		16		18		17		69
Total sales	$	812	$	741	$	554	$	476	$	2,583



	First Half Ended June 29, 2018
Revenue Recognition Method	Electronic Systems		Aerospace Systems		Communication Systems		Sensor Systems		Consolidated L3
					(in millions)
Cost to cost method	$	1,081	$	1,379	$	845	$	439	$	3,744
Point in time	369		13		153		381		916
Output method	122		1		12		27		162
Billing method	25		34		37		36		132
Total sales	$	1,597	$	1,427	$	1,047	$	883	$	4,954