Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Sales and operating income by segment

The following table presents sales and operating income by segment:

	Year Ended December 31
$ in millions	2015			2014			2013
Sales
Aerospace Systems	$	9,940		$	9,910		$	9,999
Mission Systems	10,674			11,001			11,468
Technology Services	4,819			4,902			4,992
Intersegment eliminations	(1,907		)	(1,834		)	(1,798		)
Total sales	23,526			23,979			24,661
Operating income
Aerospace Systems	1,205			1,285			1,214
Mission Systems	1,410			1,557			1,619
Technology Services	514			461			464
Intersegment eliminations	(209		)	(204		)	(217		)
Total segment operating income	2,920			3,099			3,080
Reconciliation to operating income:
Net FAS/CAS pension adjustment	348			269			168
Unallocated corporate expenses	(190		)	(169		)	(119		)
Other	(2		)	(3		)	(6		)
Total operating income	$	3,076		$	3,196		$	3,123

Intersegment sales and operating income

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

	Year Ended December 31
$ in millions	2015					2014					2013
	Sales		Operating Income			Sales		Operating Income			Sales		Operating Income
Intersegment sales and operating income
Aerospace Systems	$	221		$	27	$	166		$	21	$	138		$	17
Mission Systems	781			97		842			115		834			133
Technology Services	905			85		826			68		826			67
Total	$	1,907		$	209	$	1,834		$	204	$	1,798		$	217

Total assets by segment

The following table presents assets by segment:

.

	December 31
$ in millions	2015		2014
Assets
Aerospace Systems	$	7,049	$	6,828
Mission Systems	9,475		9,509
Technology Services	3,047		3,137
Segment assets	19,571		19,474
Corporate assets(1)	4,883		7,098
Total assets	$	24,454	$	26,572

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

Additional information by segment

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

	Capital Expenditures						Depreciation and Amortization(1)
$ in millions	2015		2014		2013		2015		2014		2013
Aerospace Systems	$	237	$	376	$	190	$	215	$	208	$	213
Mission Systems	141		131		107		153		158		181
Technology Services	3		3		7		36		36		35
Corporate	90		51		60		63		60		66
Total	$	471	$	561	$	364	$	467	$	462	$	495

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