Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and equivalents	$ 2,649	$ 2,613
Accounts receivable	4,452	3,848
Contracts in process	5,168	4,873
Inventories	2,310	2,158
Other current assets	789	694
Total current assets	15,368	14,186
Noncurrent assets:
Property, plant and equipment, net	3,284	2,971
Intangible assets, net	1,813	1,992
Goodwill	13,576	12,649
Other assets	842	747
Total noncurrent assets	19,515	18,359
Total assets	34,883	32,545
Current liabilities:
Short-term debt and current portion of long-term debt	23	773
Accounts payable	2,895	2,736
Customer advances and deposits	5,011	4,465
Other current liabilities	3,216	3,203
Total current liabilities	11,145	11,177
Noncurrent liabilities:
Long-term debt	3,907	2,430
Other liabilities	6,599	5,622
Commitments and contingencies (see Note N)
Total noncurrent liabilities	10,506	8,052
Shareholders' equity:
Common stock	482	482
Surplus	1,888	1,729
Retained earnings	18,917	17,076
Treasury stock	(5,743)	(4,535)
Accumulated other comprehensive loss	(2,312)	(1,436)
Total shareholders' equity	13,232	13,316
Total liabilities and shareholders' equity	$ 34,883	$ 32,545