Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012		Jul. 01, 2012	Dec. 31, 2011
Current assets:
Cash and equivalents	$ 3,757	$ 3,296		$ 2,540	$ 2,649
Accounts receivable	4,289	4,204
Contracts in process	5,110	4,964
Inventories
Work in process	1,657	1,518
Raw materials	1,160	1,109
Finished goods	56	69
Pre-owned aircraft	62	80
Other current assets	447	504
Total current assets	16,538	15,744
Noncurrent assets:
Property, plant and equipment	7,107	7,003
Accumulated depreciation of PP&E	(3,756)	(3,600)
Intangible assets	2,881	2,915
Accumulated amortization of intangible assets	(1,611)	(1,532)
Goodwill	11,909	12,048	[1]
Other assets	1,663	1,731
Investment in subsidiaries	0	0
Total noncurrent assets	18,193	18,565
Total assets	34,731	34,309
Current liabilities:
Customer advances and deposits	6,113	6,042
Other current liabilities	5,728	5,578
Total current liabilities	11,841	11,620
Noncurrent liabilities:
Long-term debt	3,907	3,908
Other liabilities	7,227	7,391
Total noncurrent liabilities	11,134	11,299
Intercompany	0	0
Shareholders' equity:
Common stock	482	482
Other shareholders' equity	11,274	10,908
Total shareholders' equity	11,756	11,390
Total liabilities and shareholders' equity	34,731	34,309
Parent Company [Member]
Current assets:
Cash and equivalents	2,729	2,248		1,655	1,530
Accounts receivable	0	0
Contracts in process	534	439
Inventories
Work in process	0	0
Raw materials	0	0
Finished goods	0	0
Pre-owned aircraft	0
Other current assets	64	45
Total current assets	3,327	2,732
Noncurrent assets:
Property, plant and equipment	155	155
Accumulated depreciation of PP&E	(60)	(56)
Intangible assets	0	0
Accumulated amortization of intangible assets	0	0
Goodwill	0	0
Other assets	426	700
Investment in subsidiaries	34,573	33,324
Total noncurrent assets	35,094	34,123
Total assets	38,421	36,855
Current liabilities:
Customer advances and deposits	0	0
Other current liabilities	739	394
Total current liabilities	739	394
Noncurrent liabilities:
Long-term debt	3,882	3,881
Other liabilities	4,051	4,121
Total noncurrent liabilities	7,933	8,002
Intercompany	17,993	17,069
Shareholders' equity:
Common stock	482	482
Other shareholders' equity	11,274	10,908
Total shareholders' equity	11,756	11,390
Total liabilities and shareholders' equity	38,421	36,855
Guarantor Subsidiaries [Member]
Current assets:
Cash and equivalents	0	0		0	0
Accounts receivable	1,468	1,254
Contracts in process	3,190	3,199
Inventories
Work in process	1,644	1,507
Raw materials	1,077	1,020
Finished goods	15	32
Pre-owned aircraft	62	80
Other current assets	192	249
Total current assets	7,648	7,341
Noncurrent assets:
Property, plant and equipment	5,668	5,556
Accumulated depreciation of PP&E	(2,959)	(2,850)
Intangible assets	1,674	1,693
Accumulated amortization of intangible assets	(1,117)	(1,068)
Goodwill	7,660	7,661
Other assets	735	738
Investment in subsidiaries	0	0
Total noncurrent assets	11,661	11,730
Total assets	19,309	19,071
Current liabilities:
Customer advances and deposits	3,187	3,052
Other current liabilities	3,782	3,743
Total current liabilities	6,969	6,795
Noncurrent liabilities:
Long-term debt	25	27
Other liabilities	2,599	2,704
Total noncurrent liabilities	2,624	2,731
Intercompany	(18,392)	(17,388)
Shareholders' equity:
Common stock	6	6
Other shareholders' equity	28,102	26,927
Total shareholders' equity	28,108	26,933
Total liabilities and shareholders' equity	19,309	19,071
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and equivalents	1,028	1,048		885	1,119
Accounts receivable	2,821	2,950
Contracts in process	1,386	1,326
Inventories
Work in process	13	11
Raw materials	83	89
Finished goods	41	37
Pre-owned aircraft	0
Other current assets	191	210
Total current assets	5,563	5,671
Noncurrent assets:
Property, plant and equipment	1,284	1,292
Accumulated depreciation of PP&E	(737)	(694)
Intangible assets	1,207	1,222
Accumulated amortization of intangible assets	(494)	(464)
Goodwill	4,249	4,387
Other assets	303	328
Investment in subsidiaries	0	0
Total noncurrent assets	5,812	6,071
Total assets	11,375	11,742
Current liabilities:
Customer advances and deposits	2,926	2,990
Other current liabilities	1,207	1,441
Total current liabilities	4,133	4,431
Noncurrent liabilities:
Long-term debt	0	0
Other liabilities	577	566
Total noncurrent liabilities	577	566
Intercompany	399	319
Shareholders' equity:
Common stock	44	44
Other shareholders' equity	6,222	6,382
Total shareholders' equity	6,266	6,426
Total liabilities and shareholders' equity	11,375	11,742
Consolidation, Eliminations [Member]
Current assets:
Cash and equivalents	0	0		0	0
Accounts receivable	0	0
Contracts in process	0	0
Inventories
Work in process	0	0
Raw materials	0	0
Finished goods	0	0
Pre-owned aircraft	0
Other current assets	0	0
Total current assets	0	0
Noncurrent assets:
Property, plant and equipment	0	0
Accumulated depreciation of PP&E	0	0
Intangible assets	0	0
Accumulated amortization of intangible assets	0	0
Goodwill	0	0
Other assets	199	(35)
Investment in subsidiaries	(34,573)	(33,324)
Total noncurrent assets	(34,374)	(33,359)
Total assets	(34,374)	(33,359)
Current liabilities:
Customer advances and deposits	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Noncurrent liabilities:
Long-term debt	0	0
Other liabilities	0	0
Total noncurrent liabilities	0	0
Intercompany	0	0
Shareholders' equity:
Common stock	(50)	(50)
Other shareholders' equity	(34,324)	(33,309)
Total shareholders' equity	(34,374)	(33,359)
Total liabilities and shareholders' equity	(34,374)	(33,359)
Consolidation, Eliminations [Member]
Inventories
Pre-owned aircraft		0
Non-Guarantor Subsidiaries [Member]
Inventories
Pre-owned aircraft		0
Parent Company [Member]
Inventories
Pre-owned aircraft		$ 0

[1] (a)Goodwill on December 31, 2012, in the Information Systems and Technology reporting unit is net of $1,994 of accumulated impairment losses.