Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Oct. 04, 2015	Dec. 31, 2014		Sep. 28, 2014	Dec. 31, 2013
Current assets:
Cash and equivalents	$ 3,372	$ 4,388		$ 5,105	$ 5,301
Accounts receivable	3,796	4,050
Contracts in process	4,215	4,591
Inventories
Work in process	1,882	1,828
Raw materials	1,314	1,290
Finished goods	24	28
Pre-owned aircraft	19	75
Other current assets	666	1,157
Total current assets	15,288	17,407
Noncurrent assets:
Property, plant and equipment	7,529	7,292
Accumulated depreciation of PP&E	(4,159)	(3,963)
Intangible assets	2,363	2,398
Accumulated amortization of intangible assets	(1,563)	(1,486)
Goodwill	11,533	11,731	[1]
Other assets	1,989	1,976
Investment in subsidiaries	0	0
Total noncurrent assets	17,692	17,948
Total assets	32,980	35,355
Current liabilities:
Short-term debt	501	501
Customer advances and deposits	5,871	7,335
Other current liabilities	6,806	5,915
Total current liabilities	13,178	13,751
Noncurrent liabilities:
Long-term debt	2,912	3,410
Other liabilities	6,156	6,365
Total noncurrent liabilities	9,068	9,775
Intercompany	0	0
Shareholders' equity:
Common stock	482	482
Other shareholders' equity	10,252	11,347
Total shareholders' equity	10,734	11,829		13,010	14,501
Total liabilities and shareholders' equity	32,980	35,355
Parent Company [Member]
Current assets:
Cash and equivalents	1,284	2,536		2,257	4,179
Accounts receivable	0	0
Contracts in process	547	542
Inventories
Work in process	0	0
Raw materials	0	0
Finished goods	0	0
Pre-owned aircraft	0	0
Other current assets	236	781
Total current assets	2,067	3,859
Noncurrent assets:
Property, plant and equipment	177	148
Accumulated depreciation of PP&E	(57)	(52)
Intangible assets	0	0
Accumulated amortization of intangible assets	0	0
Goodwill	0	0
Other assets	1,590	1,479
Investment in subsidiaries	39,254	37,449
Total noncurrent assets	40,964	39,024
Total assets	43,031	42,883
Current liabilities:
Short-term debt	500	500
Customer advances and deposits	0	0
Other current liabilities	1,434	1,298
Total current liabilities	1,934	1,798
Noncurrent liabilities:
Long-term debt	2,888	3,386
Other liabilities	3,311	3,514
Total noncurrent liabilities	6,199	6,900
Intercompany	24,164	22,356
Shareholders' equity:
Common stock	482	482
Other shareholders' equity	10,252	11,347
Total shareholders' equity	10,734	11,829
Total liabilities and shareholders' equity	43,031	42,883
Guarantor Subsidiaries [Member]
Current assets:
Cash and equivalents	0	0		0	0
Accounts receivable	1,506	1,379
Contracts in process	2,638	2,966
Inventories
Work in process	1,870	1,818
Raw materials	1,285	1,260
Finished goods	17	20
Pre-owned aircraft	19	75
Other current assets	205	215
Total current assets	7,540	7,733
Noncurrent assets:
Property, plant and equipment	6,263	6,035
Accumulated depreciation of PP&E	(3,411)	(3,246)
Intangible assets	1,444	1,484
Accumulated amortization of intangible assets	(1,100)	(1,042)
Goodwill	8,041	8,095
Other assets	204	213
Investment in subsidiaries	0	0
Total noncurrent assets	11,441	11,539
Total assets	18,981	19,272
Current liabilities:
Short-term debt	1	1
Customer advances and deposits	2,807	3,529
Other current liabilities	3,669	3,511
Total current liabilities	6,477	7,041
Noncurrent liabilities:
Long-term debt	24	24
Other liabilities	2,373	2,369
Total noncurrent liabilities	2,397	2,393
Intercompany	(23,520)	(22,557)
Shareholders' equity:
Common stock	6	6
Other shareholders' equity	33,621	32,389
Total shareholders' equity	33,627	32,395
Total liabilities and shareholders' equity	18,981	19,272
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and equivalents	2,088	1,852		2,848	1,122
Accounts receivable	2,290	2,671
Contracts in process	1,030	1,083
Inventories
Work in process	12	10
Raw materials	29	30
Finished goods	7	8
Pre-owned aircraft	0	0
Other current assets	225	161
Total current assets	5,681	5,815
Noncurrent assets:
Property, plant and equipment	1,089	1,109
Accumulated depreciation of PP&E	(691)	(665)
Intangible assets	919	914
Accumulated amortization of intangible assets	(463)	(444)
Goodwill	3,492	3,636
Other assets	195	284
Investment in subsidiaries	0	0
Total noncurrent assets	4,541	4,834
Total assets	10,222	10,649
Current liabilities:
Short-term debt	0	0
Customer advances and deposits	3,064	3,806
Other current liabilities	1,703	1,106
Total current liabilities	4,767	4,912
Noncurrent liabilities:
Long-term debt	0	0
Other liabilities	472	482
Total noncurrent liabilities	472	482
Intercompany	(644)	201
Shareholders' equity:
Common stock	2,354	2,043
Other shareholders' equity	3,273	3,011
Total shareholders' equity	5,627	5,054
Total liabilities and shareholders' equity	10,222	10,649
Consolidating Adjustments [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	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	0	0
Investment in subsidiaries	(39,254)	(37,449)
Total noncurrent assets	(39,254)	(37,449)
Total assets	(39,254)	(37,449)
Current liabilities:
Short-term debt	0	0
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	(2,360)	(2,049)
Other shareholders' equity	(36,894)	(35,400)
Total shareholders' equity	(39,254)	(37,449)
Total liabilities and shareholders' equity	$ (39,254)	$ (37,449)

[1] Goodwill on December 31, 2014, in the Information Systems and Technology reporting unit is net of $1,994 of accumulated impairment losses.