Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income available for common shareholders (A)	$ 4,620	$ 4,540
Weighted average outstanding shares of common stock (B)	7,996	8,249
Dilutive effect of stock-based awards	70	102
Common stock and common stock equivalents (C)	8,066	8,351
Earnings Per Share
Basic (A/B)	$ 0.58	$ 0.55
Diluted (A/C)	$ 0.57	$ 0.54