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Consolidated Statements Of Stockholders' Equity - USD ($) $ in Millions | Common Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | ---
Balance as of beginning-of-period at Dec. 31, 2016 | $ 5,869 | $ 7,043 | $ 1,566 |
Stock compensation/issued for benefit plans | 94 |  |  |
Net income (loss) |  | 2,079 |  | $ 2,079
Retirement of common stock/cancellation of shares | (270) | (455) |  |
Common stock dividends declared |  | (268) |  |
Other comprehensive income (loss), net of tax |  |  | 1,664 | 1,664
Balance as of end-of-period at Dec. 31, 2017 | 5,693 | 8,399 | 3,230 | 17,322
Cumulative effect from adoption of new accounting standards at Dec. 31, 2017 |  | (642) | 642 |
Stock compensation/issued for benefit plans | 45 |  |  |
Net income (loss) |  | 1,641 |  | 1,641
Retirement of common stock/cancellation of shares | (346) | (554) |  |
Common stock dividends declared |  | (293) |  |
Other comprehensive income (loss), net of tax |  |  | (3,465) | (3,465)
Balance as of end-of-period at Dec. 31, 2018 | 5,392 | 8,551 | 407 | 14,350
Cumulative effect from adoption of new accounting standards at Dec. 31, 2018 |  |  |  | (6)
Stock compensation/issued for benefit plans | 42 |  |  |
Net income (loss) |  | 886 |  | 886
Retirement of common stock/cancellation of shares | (272) | (278) |  |
Common stock dividends declared |  | (305) |  |
Other comprehensive income (loss), net of tax |  |  | 5,266 | 5,266
Balance as of end-of-period at Dec. 31, 2019 | $ 5,162 | $ 8,854 | $ 5,673 | $ 19,689

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