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Consolidated Statement of Equity (Unaudited) - USD ($) shares in Millions, $ in Millions | Total | Common stock | Capital in excess of par value | Retained earnings | Treasury stock | Accumulated other comprehensive income (loss) | Total Kellogg Company equity | Non-controlling interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 3,159 |  |  |  |  |  |  |
Balance at Dec. 29, 2018 |  | $ 105 | $ 895 | $ 7,652 | $ (4,551) | $ (1,500) | $ 2,601 | $ 558
Balance (in shares) at Dec. 29, 2018 |  | 421 |  |  | 77 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Common stock repurchases (in shares) |  |  |  |  | 4 |  |  |
Common stock repurchases | (220) |  |  |  | $ (220) |  | (220) |
Net income | 285 |  |  | 282 |  |  | 282 | 3
Dividends declared | (192) |  |  | (192) |  |  | (192) |
Other comprehensive income (loss) | 58 |  |  |  |  | 55 | 55 | 3
Reclassification of tax effects relating to U.S. tax reform | 0 |  |  | 22 |  | (22) | 0 |
Stock compensation | 13 |  | 13 |  |  |  | 13 |
Stock options exercised and other (in shares) |  |  |  |  | (1) |  |  |
Stock options exercised and other | (6) |  | (31) | (2) | $ 27 |  | (6) |
Balance (in shares) at Mar. 30, 2019 |  | 421 |  |  | 80 |  |  |
Balance at Mar. 30, 2019 |  | $ 105 | 877 | 7,762 | $ (4,744) | (1,467) | 2,533 | 564
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 3,097 |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 3,314 |  |  |  |  |  |  |
Balance at Dec. 28, 2019 | 2,747 | $ 105 | 921 | 7,859 | $ (4,690) | (1,448) | 2,747 | 567
Balance (in shares) at Dec. 28, 2019 |  | 421 |  |  | 79 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income | 350 |  |  | 347 |  |  | 347 | 3
Dividends declared | (195) |  |  | (195) |  |  | (195) |
Other comprehensive income (loss) | (311) |  |  |  |  | (279) | (279) | (32)
Stock compensation | 19 |  | 19 |  |  |  | 19 |
Stock options exercised and other (in shares) |  |  |  |  | (1) |  |  |
Stock options exercised and other | 35 |  | (29) | (1) | $ 65 |  | 35 |
Balance (in shares) at Mar. 28, 2020 |  | 421 |  |  | 78 |  |  |
Balance at Mar. 28, 2020 | 2,674 | $ 105 | $ 911 | $ 8,010 | $ (4,625) | $ (1,727) | $ 2,674 | $ 538
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 3,212 |  |  |  |  |  |  |

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