Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

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	2014			2013			2012
Sales
Aerospace Systems	$	9,997		$	10,014		$	9,977
Electronic Systems	6,951			7,149			6,950
Information Systems	6,222			6,596			7,356
Technical Services	2,799			2,843			3,019
Intersegment eliminations	(1,990		)	(1,941		)	(2,084		)
Total sales	23,979			24,661			25,218
Operating income
Aerospace Systems	1,315			1,215			1,218
Electronic Systems	1,148			1,226			1,187
Information Systems	611			633			761
Technical Services	261			262			268
Intersegment eliminations	(236		)	(256		)	(258		)
Total segment operating income	3,099			3,080			3,176
Reconciliation to operating income:
Net FAS/CAS pension adjustment	269			168			132
Unallocated corporate expenses	(169		)	(119		)	(168		)
Other	(3		)	(6		)	(10		)
Total operating income	$	3,196		$	3,123		$	3,130

Intersegment sales and operating income

Intersegment sales and operating income before eliminations were as follows:

	Year Ended December 31
$ in millions	2014					2013					2012
	Sales		Operating Income			Sales		Operating Income			Sales		Operating Income
Intersegment sales and operating income
Aerospace Systems	$	176		$	22	$	149		$	18	$	171		$	20
Electronic Systems	637			109		629			125		607			110
Information Systems	537			57		504			63		682			78
Technical Services	640			48		659			50		624			50
Total	$	1,990		$	236	$	1,941		$	256	$	2,084		$	258

Total assets by segment

	December 31
$ in millions	2014		2013
Assets
Aerospace Systems	$	6,844	$	6,490
Electronic Systems	4,366		4,400
Information Systems	6,725		6,887
Technical Services	1,539		1,367
Segment assets	19,474		19,144
Corporate assets (1)	7,098		7,237
Total assets	$	26,572	$	26,381

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

Additional information by segment

	Capital Expenditures						Depreciation and Amortization (1)
$ in millions	2014		2013		2012		2014		2013		2012
Aerospace Systems	$	387	$	198	$	154	$	206	$	210	$	196
Electronic Systems	82		76		84		119		134		139
Information Systems	40		27		40		70		81		100
Technical Services	1		3		3		7		4		4
Corporate	51		60		50		60		66		71
Total	$	561	$	364	$	331	$	462	$	495	$	510

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