Condensed Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Apr. 01, 2012	Dec. 31, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2010
Current assets:
Cash and equivalents	$ 2,649	$ 2,632	$ 2,649	$ 2,632	$ 2,484	$ 2,613
Accounts receivable		4,686	4,452
Contracts in process		4,929	5,168
Inventories
Work in process		1,310	1,202
Raw materials		1,041	1,031
Finished goods		84	77
Pre-owned aircraft		9
Other current assets		819	789
Total current assets		15,510	15,368
Noncurrent assets:
Property, plant and equipment		6,662	6,518
Accumulated depreciation of PP&E		(3,372)	(3,234)
Intangible assets		3,246	3,219
Accumulated amortization of intangible assets		(1,463)	(1,406)
Goodwill		13,759	13,576
Other assets		967	842
Total noncurrent assets		19,799	19,515
Total assets		35,309	34,883
Current liabilities:
Short-term debt		3	23
Customer advances and deposits		5,299	5,011
Other current liabilities		5,651	6,111
Total current liabilities		10,953	11,145
Noncurrent liabilities:
Long-term debt		3,905	3,907
Other liabilities		6,597	6,599
Total noncurrent liabilities		10,502	10,506
Shareholders' equity:
Common stock		482	482
Other shareholders' equity		13,372	12,750
Total shareholders' equity		13,854	13,232
Total liabilities and shareholders' equity		35,309	34,883
Parent [Member]
Current assets:
Cash and equivalents	1,530	1,800	1,530		1,513	1,608
Contracts in process		330	292
Inventories
Other current assets		317	319
Total current assets		2,447	2,141
Noncurrent assets:
Property, plant and equipment		153	153
Accumulated depreciation of PP&E		(50)	(49)
Other assets		360	265
Investment in subsidiaries		34,227	33,192
Total noncurrent assets		34,690	33,561
Total assets		37,137	35,702
Current liabilities:
Other current liabilities		652	463
Total current liabilities		652	463
Noncurrent liabilities:
Long-term debt		3,896	3,895
Other liabilities		3,487	3,443
Total noncurrent liabilities		7,383	7,338
Intercompany		15,248	14,669
Shareholders' equity:
Common stock		482	482
Other shareholders' equity		13,372	12,750
Total shareholders' equity		13,854	13,232
Total liabilities and shareholders' equity		37,137	35,702
Guarantors On A Combined Basis [Member]
Current assets:
Accounts receivable		1,718	1,659
Contracts in process		3,088	3,182
Inventories
Work in process		1,296	1,168
Raw materials		904	898
Finished goods		40	36
Pre-owned aircraft		9
Other current assets		253	247
Total current assets		7,308	7,190
Noncurrent assets:
Property, plant and equipment		5,243	5,181
Accumulated depreciation of PP&E		(2,675)	(2,604)
Intangible assets		1,767	1,767
Accumulated amortization of intangible assets		(1,011)	(976)
Goodwill		9,353	9,287
Other assets		274	247
Total noncurrent assets		12,951	12,902
Total assets		20,259	20,092
Current liabilities:
Short-term debt			21
Customer advances and deposits		2,637	2,483
Other current liabilities		3,479	3,729
Total current liabilities		6,116	6,233
Noncurrent liabilities:
Long-term debt		8	9
Other liabilities		2,494	2,541
Total noncurrent liabilities		2,502	2,550
Intercompany		(15,703)	(15,240)
Shareholders' equity:
Common stock		6	6
Other shareholders' equity		27,338	26,543
Total shareholders' equity		27,344	26,549
Total liabilities and shareholders' equity		20,259	20,092
Other Subsidiaries On A Combined Basis [Member]
Current assets:
Cash and equivalents	1,119	832	1,119		971	1,005
Accounts receivable		2,968	2,793
Contracts in process		1,511	1,694
Inventories
Work in process		14	34
Raw materials		137	133
Finished goods		44	41
Other current assets		249	223
Total current assets		5,755	6,037
Noncurrent assets:
Property, plant and equipment		1,266	1,184
Accumulated depreciation of PP&E		(647)	(581)
Intangible assets		1,479	1,452
Accumulated amortization of intangible assets		(452)	(430)
Goodwill		4,406	4,289
Other assets		333	330
Total noncurrent assets		6,385	6,244
Total assets		12,140	12,281
Current liabilities:
Short-term debt		3	2
Customer advances and deposits		2,662	2,528
Other current liabilities		1,520	1,919
Total current liabilities		4,185	4,449
Noncurrent liabilities:
Long-term debt		1	3
Other liabilities		616	615
Total noncurrent liabilities		617	618
Intercompany		455	571
Shareholders' equity:
Common stock		44	44
Other shareholders' equity		6,839	6,599
Total shareholders' equity		6,883	6,643
Total liabilities and shareholders' equity		12,140	12,281
Consolidating Adjustments [Member]
Noncurrent assets:
Investment in subsidiaries		(34,227)	(33,192)
Total noncurrent assets		(34,227)	(33,192)
Total assets		(34,227)	(33,192)
Shareholders' equity:
Common stock		(50)	(50)
Other shareholders' equity		(34,177)	(33,142)
Total shareholders' equity		(34,227)	(33,192)
Total liabilities and shareholders' equity		$ (34,227)	$ (33,192)