Segment Information (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2018

The following table presents sales and operating income by segment:



	Three Months Ended March 31
$ in millions	2018			2017
Sales
Aerospace Systems	$	3,280		$	2,984
Mission Systems	2,883			2,800
Technology Services	1,144			1,190
Intersegment eliminations	(572		)	(564		)
Total sales	6,735			6,410
Operating income
Aerospace Systems	341			323
Mission Systems	371			359
Technology Services	122			129
Intersegment eliminations	(72		)	(70		)
Total segment operating income	762			741
Net FAS (service)/CAS pension adjustment	127			154
Unallocated corporate expenses	(34		)	(32		)
Other	(1		)	(1		)
Total operating income	$	854		$	862

Revenue by Major Customers by Reporting Segments [Table Text Block]



Sales by Customer Type	Three Months Ended March 31
	2018				2017
$ in millions	$		%⁽³⁾		$		%⁽³⁾
Aerospace Systems
U.S. Government⁽¹⁾	$	2,908	89	%	$	2,553	86	%
International⁽²⁾	271		8	%	309		10	%
Other customers	42		1	%	38		1	%
Intersegment sales	59		2	%	84		3	%
Aerospace Systems sales	3,280		100	%	2,984		100	%
Mission Systems
U.S. Government⁽¹⁾	2,190		76	%	2,186		78	%
International⁽²⁾	379		13	%	354		13	%
Other customers	30		1	%	21		1	%
Intersegment sales	284		10	%	239		8	%
Mission Systems sales	2,883		100	%	2,800		100	%
Technology Services
U.S. Government⁽¹⁾	602		53	%	636		53	%
International⁽²⁾	220		19	%	209		18	%
Other customers	93		8	%	104		9	%
Intersegment sales	229		20	%	241		20	%
Technology Services sales	1,144		100	%	1,190		100	%
Total
U.S. Government⁽¹⁾	5,700		85	%	5,375		84	%
International⁽²⁾	870		13	%	872		14	%
Other customers	165		2	%	163		2	%
Total sales	$	6,735	100	%	$	6,410	100	%


⁽¹⁾	Sales to the U.S. Government include sales from contracts for which we are the prime contractor, as well as those for which we are a subcontractor and the ultimate customer is the U.S. Government. Each of the company's segments derives substantial revenue from the U.S. Government.

⁽²⁾ International sales include sales from contracts for which we are the prime contractor, as well as those for which we are a subcontractor and the ultimate customer is an international customer. These sales include foreign military sales contracted through the U.S. Government, direct sales with governments outside the U.S. and commercial sales with customers outside the U.S.

⁽³⁾ Percentages calculated based on total segment sales.

Revenue from External Customers by Contract Type [Table Text Block]



Sales by Contract Type	Three Months Ended March 31
	2018				2017
$ in millions	$		%⁽¹⁾		$		%⁽¹⁾
Aerospace Systems
Cost-type	$	1,902	59	%	$	1,827	63	%
Fixed-price	1,319		41	%	1,073		37	%
Intersegment sales	59				84
Aerospace Systems sales	3,280				2,984
Mission Systems
Cost-type	1,279		49	%	1,316		51	%
Fixed-price	1,320		51	%	1,245		49	%
Intersegment sales	284				239
Mission Systems sales	2,883				2,800
Technology Services
Cost-type	437		48	%	445		47	%
Fixed-price	478		52	%	504		53	%
Intersegment sales	229				241
Technology Services sales	1,144				1,190
Total
Cost-type	3,618		54	%	3,588		56	%
Fixed-price	3,117		46	%	2,822		44	%
Total sales	$	6,735	100	%	$	6,410	100	%


⁽¹⁾	Percentages calculated based on external customer sales.

Revenue from External Customers by Geographic Areas [Table Text Block]



Sales by Geographic Region	Three Months Ended March 31
	2018				2017
$ in millions	$		%⁽¹⁾		$		%⁽¹⁾
Aerospace Systems
United States	$	2,950	92	%	$	2,591	89	%
Asia/Pacific	129		4	%	188		7	%
All other (principally Europe and Middle East)	142		4	%	121		4	%
Intersegment sales	59				84
Aerospace Systems sales	3,280				2,984
Mission Systems
United States	2,220		85	%	2,207		86	%
Asia/Pacific	153		6	%	154		6	%
All other (principally Europe and Middle East)	226		9	%	200		8	%
Intersegment sales	284				239
Mission Systems sales	2,883				2,800
Technology Services
United States	695		76	%	741		78	%
Asia/Pacific	32		3	%	46		5	%
All other (principally Europe and Middle East)	188		21	%	162		17	%
Intersegment sales	229				241
Technology Services sales	1,144				1,190
Total
United States	5,865		87	%	5,539		86	%
Asia/Pacific	314		5	%	388		6	%
All other (principally Europe and Middle East)	556		8	%	483		8	%
Total sales	$	6,735	100	%	$	6,410	100	%


⁽¹⁾	Percentages calculated based on external customer sales.