Condensed Consolidated Statements Of Operations (USD $) In Millions, except Per Share data	3 Months Ended				6 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Condensed Consolidated Statements Of Operations
Revenues	$ 30,216		$ 27,534		$ 60,196		$ 54,984
Cost of Sales	28,569		26,168		57,040		52,226
Gross Profit	1,647		1,366		3,156		2,758
Operating Expenses	1,051		925		2,088		1,843
Litigation Charges	118		24		118		24
Total Operating Expenses	1,169		949		2,206		1,867
Operating Income	478		417		950		891
Other Income, Net	6		3		14		12
Interest Expense	(64)		(44)		(128)		(87)
Income from Continuing Operations Before Income Taxes	420		376		836		816
Income Tax Expense	(124)		(121)		(254)		(263)
Income from Continuing Operations	296		255		582		553
Discontinued Operation - gain on sale, net of tax			72				72
Net Income	$ 296		$ 327		$ 582		$ 625
Diluted
Continuing operations	$ 1.18	[1]	$ 0.97	[1]	$ 2.31	[1]	$ 2.07	[1]
Discontinued operation - gain on sale			$ 0.28	[1]			$ 0.27	[1]
Total	$ 1.18	[1]	$ 1.25	[1]	$ 2.31	[1]	$ 2.34	[1]
Basic
Continuing operations	$ 1.20	[1]	$ 0.99	[1]	$ 2.35	[1]	$ 2.11	[1]
Discontinued operation - gain on sale			$ 0.28	[1]			$ 0.28	[1]
Total	$ 1.20	[1]	$ 1.27	[1]	$ 2.35	[1]	$ 2.39	[1]
Dividends Declared Per Common Share	$ 0.20		$ 0.18		$ 0.40		$ 0.36
Weighted Average Common Shares
Diluted	250		262		252		267
Basic	246		258		247		262

[1] Certain computations may reflect rounding adjustments.