Consolidated Statements of Changes in Shareholders Equity and Comprehensive Income (USD $) In Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Scenario Previously Reported Member	Scenario Previously Reported Member Common Stock	Scenario Previously Reported Member Additional Paid-In Capital	Scenario Previously Reported Member Retained Earnings	Scenario Previously Reported Member Accumulated Other Comprehensive Income	Scenario Previously Reported Member Treasury Stock
Beginning balance at May. 31, 2007
Adjustment to opening balances for retirement plans measurement date transition, net of tax	$ 325			$ (44)	$ 369
Ending balance at May. 31, 2008	14,851	31	1,922	12,958	(56)	(4)	14,526	31	1,922	13,002	(425)	(4)
Net income	98			98
Foreign currency translation adjustments, net of tax	(112)				(112)
Retirement plans adjustments, net of tax	(1,205)				(1,205)
Total comprehensive income/(loss)	(1,219)
Cash dividends declared	(137)			(137)
Employee incentive plans and other	131		131
Ending balance at May. 31, 2009	13,626	31	2,053	12,919	(1,373)	(4)
Net income	1,184			1,184
Foreign currency translation adjustments, net of tax	(25)				(25)
Retirement plans adjustments, net of tax	(1,042)				(1,042)
Total comprehensive income/(loss)	117
Purchase of treasury stock	(3)					(3)
Cash dividends declared	(137)			(137)
Employee incentive plans and other	208		208
Ending balance at May. 31, 2010	13,811	31	2,261	13,966	(2,440)	(7)
Net income	1,452			1,452
Foreign currency translation adjustments, net of tax	125				125
Retirement plans adjustments, net of tax	(235)				(235)
Total comprehensive income/(loss)	1,342
Purchase of treasury stock	(5)					(5)
Cash dividends declared	(152)			(152)
Employee incentive plans and other	224	1	223
Ending balance at May. 31, 2011	$ 15,220	$ 32	$ 2,484	$ 15,266	$ (2,550)	$ (12)