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Basic and Diluted Earnings Per Share (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2012
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| Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items] | ||||||||||||||||||||||||||
| Net income available for common shareholders (A) | $ 4,612 | [1],[2] | $ 5,660 | $ 6,558 | $ 5,244 | $ 4,965 | [1],[3] | $ 6,055 | [4] | $ 6,377 | $ 4,466 | $ 22,074 | [1],[2] | $ 21,863 | [1],[5] | $ 16,978 | ||||||||||
| Weighted average outstanding shares of common stock (B) | 8,299 | 8,375 | 8,396 | |||||||||||||||||||||||
| Dilutive effect of stock-based awards | 100 | 95 | 110 | |||||||||||||||||||||||
| Common stock and common stock equivalents (C) | 8,399 | 8,470 | 8,506 | |||||||||||||||||||||||
| Earnings Per Share | ||||||||||||||||||||||||||
| Basic (A/B) | $ 0.56 | [1] | $ 0.68 | $ 0.79 | $ 0.63 | $ 0.59 | [1] | $ 0.72 | $ 0.76 | $ 0.53 | $ 2.66 | [1] | $ 2.61 | [1] | $ 2.02 | |||||||||||
| Diluted (A/C) | $ 0.55 | [1],[2] | $ 0.68 | $ 0.78 | $ 0.62 | $ 0.59 | [1],[3] | $ 0.72 | [4] | $ 0.76 | $ 0.53 | $ 2.63 | [1],[2] | $ 2.58 | [1],[5] | $ 2.00 | ||||||||||
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