Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Sales and Service Revenues
Product sales	$ 3,709	$ 4,167	$ 7,572	$ 8,191
Service revenues	2,851	3,088	5,722	5,978
Total sales and service revenues	6,560	7,255	13,294	14,169
Cost of Sales and Service Revenues
Cost of product sales	2,662	3,078	5,504	6,068
Cost of service revenues	2,501	2,806	5,014	5,427
General and administrative expenses	556	621	1,124	1,245
Operating income	841	750	1,652	1,429
Other (expense) income
Interest expense	(53)	(65)	(111)	(142)
Other, net		(10)	5	(3)
Earnings from continuing operations before income taxes	788	675	1,546	1,284
Federal and foreign income tax expense (benefit)	268	(65)	530	134
Earnings from continuing operations	520	740	1,016	1,150
(Loss) Earnings from discontinued operations, net of tax		(29)	34	30
Net earnings	520	711	1,050	1,180
Basic Earnings Per Share
Continuing operations	$ 1.84	$ 2.47	$ 3.54	$ 3.82
Discontinued operations		$ (0.10)	$ 0.12	$ 0.10
Basic earnings per share	$ 1.84	$ 2.37	$ 3.66	$ 3.92
Weighted-average common shares outstanding, in millions	282.6	299.6	287.2	301.1
Diluted Earnings Per Share
Continuing operations	$ 1.81	$ 2.44	$ 3.48	$ 3.77
Discontinued operations		$ (0.10)	$ 0.11	$ 0.10
Diluted earnings per share	$ 1.81	$ 2.34	$ 3.59	$ 3.87
Weighted-average diluted shares outstanding, in millions	287.2	303.8	292.2	305.0
Net earnings (from above)	520	711	1,050	1,180
Other comprehensive income
Change in cumulative translation adjustment		(24)	27	(52)
Change in unrealized gain on marketable securities and cash flow hedges, net of tax			(2)
Change in unamortized benefit plan costs, net of tax	14	39	35	79
Other comprehensive income, net of tax	14	15	60	27
Comprehensive income	$ 534	$ 726	$ 1,110	$ 1,207