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Loss Per Share And Stockholders' Equity (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2013 | Jan. 31, 2012
Loss Per Share And Stockholders' Equity [Abstract] |  |  |  |
Common stock excluded from diluted earnings per share computation | 7,700,000 | 9,600,000 | 7,700,000 | 9,600,000
Weighted average shares outstanding | 271,542,000 | 292,963,000 | 273,281,000 | 299,450,000
Repurchased and retired H&R Block common stock, shares |  |  | 21,300,000 | 13,000,000
Retirement of common shares, value |  |  | $ 315,000,000 | $ 177,504,000
Treasury stock retired |  |  | 60,000,000 |
Purchase of H&R Block common stock, shares |  |  | 200,000 | 200,000
Purchase of H&R Block common stock, value |  |  | 2,800,000 | 3,100,000
Common stock shares issued |  |  | 1,300,000 | 1,000,000
Stock options granted in period |  |  | 1,000,000 |
Nonvested shares granted in period |  |  | 1,500,000 |
Weighted average fair value of options granted |  |  | $ 2.79 |
Awards vesting period (in years) |  |  | 3 years |
Stock-based compensation expenses | 3,700,000 | 2,000,000 | 11,500,000 | 11,000,000
Unrecognized compensation cost, options |  |  | 4,600,000 |
Unrecognized compensation cost, nonvested shares | $ 25,400,000 |  | $ 25,400,000 |

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