Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

The following table presents sales and operating income by segment:



	Year Ended December 31
$ in millions	2016			2015			2014
Sales
Aerospace Systems	$	10,828		$	9,940		$	9,910
Mission Systems	10,928			10,674			11,001
Technology Services	4,825			4,819			4,902
Intersegment eliminations	(2,073		)	(1,907		)	(1,834		)
Total sales	24,508			23,526			23,979
Operating income
Aerospace Systems	1,236			1,205			1,285
Mission Systems	1,445			1,410			1,557
Technology Services	512			514			461
Intersegment eliminations	(258		)	(209		)	(204		)
Total segment operating income	2,935			2,920			3,099
Net FAS/CAS pension adjustment	316			348			269
Unallocated corporate expenses	(53		)	(190		)	(169		)
Other	(5		)	(2		)	(3		)
Total operating income	$	3,193		$	3,076		$	3,196

The following table presents intersegment sales and operating income before eliminations:



	Year Ended December 31
$ in millions	2016					2015					2014
	Sales		Operating Income			Sales		Operating Income			Sales		Operating Income
Intersegment sales and operating income
Aerospace Systems	$	239		$	28	$	221		$	27	$	166		$	21
Mission Systems	875			136		781			97		842			115
Technology Services	959			94		905			85		826			68
Total	$	2,073		$	258	$	1,907		$	209	$	1,834		$	204

The following table presents assets by segment:


⁽¹⁾	Corporate assets principally consist of cash and cash equivalents and deferred tax assets.

The following table presents capital expenditures and depreciation and amortization by segment:



	Capital Expenditures						Depreciation and Amortization⁽¹⁾
$ in millions	2016		2015		2014		2016		2015		2014
Aerospace Systems	$	451	$	237	$	376	$	216	$	215	$	208
Mission Systems	372		141		131		140		153		158
Technology Services	6		3		3		37		36		36
Corporate	91		90		51		63		63		60
Total	$	920	$	471	$	561	$	456	$	467	$	462


⁽¹⁾	Depreciation and amortization expense includes amortization of purchased intangible assets, as well as amortization of deferred and other outsourcing costs.