Basic and Diluted Earnings Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended											12 Months Ended
	Jun. 30, 2012		Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2010
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income available for common shareholders (A)	$ (492)	[1]	$ 5,108	$ 6,624	$ 5,738	$ 5,874	[2]	$ 5,232	[3]	$ 6,634	$ 5,410	$ 16,978	[1]	$ 23,150	$ 18,760
Weighted average outstanding shares of common stock (B)												8,396		8,490	8,813
Dilutive effect of stock-based awards												110		103	114
Common stock and common stock equivalents (C)												8,506		8,593	8,927
Earnings Per Share
Basic (A/B)	$ (0.06)		$ 0.61	$ 0.79	$ 0.68	$ 0.70		$ 0.62		$ 0.78	$ 0.63	$ 2.02		$ 2.73	$ 2.13
Diluted (A/C)	$ (0.06)	[1]	$ 0.60	$ 0.78	$ 0.68	$ 0.69		$ 0.61		$ 0.77	$ 0.62	$ 2.00	[1]	$ 2.69	$ 2.10

[1] Includes a goodwill impairment charge related to our OSD business segment which decreased net income by $6.2 billion and diluted earnings per share by $0.73.

[2] Reflects an effective tax rate of 7% due mainly to the adjustment of our previously estimated effective tax rate for the year to reflect the actual full year mix of foreign and U.S. taxable income. In addition, upon completion of our annual domestic and foreign tax returns, we adjusted the estimated tax provision to reflect the tax returns filed and recorded an income tax benefit which lowered our effective tax rate.

[3] Includes a partial settlement of an I.R.S. audit of tax years 2004 to 2006, which increased net income by $461 million.