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Consolidated Statement of Shareholders' Equity - 9 months ended Oct. 31, 2015 - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings
--- | --- | --- | --- | --- | ---
Balance (in shares) at Jan. 31, 2015 | 684,733,200 | 684,733,000 |  |  |
Balance at Jan. 31, 2015 | $ 4,264,230 | $ 684,733 |  | $ (554,385) | $ 4,133,882
Net income | 1,611,192 |  |  |  | 1,611,192
Other comprehensive income (loss), net of tax | 9,210 |  |  | 9,210 |
Cash dividends declared on common stock | (425,141) |  |  |  | (425,141)
Recognition of share-based compensation | 71,063 |  | $ 71,063 |  |
Issuance of common stock under Stock Incentive Plan and related tax effect (in shares) |  | 3,700,000 |  |  |
Issuance of common stock under Stock Incentive Plan and related tax effect | 116,011 | $ 3,700 | 112,311 |  |
Common stock repurchased (in shares) |  | (18,904,000) |  |  |
Common stock repurchased | $ (1,296,104) | $ (18,904) | $ (183,374) |  | (1,093,826)
Balance (in shares) at Oct. 31, 2015 | 669,529,129 | 669,529,000 |  |  |
Balance at Oct. 31, 2015 | $ 4,350,461 | $ 669,529 |  | $ (545,175) | $ 4,226,107

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