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Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions | Total | Preferred Stock | Common Stock | Treasury Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Non-controlling Interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 20,572 | $ 0 | $ 179 | $ (9,168) | $ 7,884 | $ 21,935 | $ (258) | $ 0
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | 4,131 |  |  |  |  | 4,131 |  |
Other comprehensive income (loss), net of tax | 144 |  |  |  |  |  | 144 |
Dividends on common stock | (2,374) |  |  |  |  | (2,374) |  |
Issuance of common stock and other, net | 162 |  |  |  | 162 |  |  |
Purchases of treasury stock | (1,305) |  |  | (1,305) |  |  |  |
Reclassification of stranded tax effects | 0 |  |  |  |  | 58 | (58) |
Ending balance at Dec. 31, 2018 | 21,330 | 0 | 179 | (10,473) | 8,046 | 23,750 | (172) | 0
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | (522) |  |  |  |  | (667) |  | 145
Other comprehensive income (loss), net of tax | (49) |  |  |  |  |  | (49) |
Dividends on common stock | (2,585) |  |  |  |  | (2,585) |  |
Dividends on preferred stock | (318) |  |  |  |  | (318) |  |
Issuance of common stock and other, net | 6,939 |  | 30 |  | 6,909 |  |  |
Issuance of preferred stock | 9,762 | 9,762 |  |  |  |  |  |
Purchases of treasury stock | (180) |  |  | (180) |  |  |  |
Fair value of noncontrolling interest acquired | 4,895 |  |  |  |  |  |  | 4,895
Noncontrolling interest distributions, net | (131) |  |  |  |  |  |  | (131)
Change in control WES | (4,909) |  |  |  |  |  |  | (4,909)
Ending balance at Dec. 31, 2019 | 34,232 | 9,762 | 209 | (10,653) | 14,955 | 20,180 | (221) | 0
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | (14,831) |  |  |  |  | (14,831) |  |
Other comprehensive income (loss), net of tax | (67) |  |  |  |  |  | (67) |
Dividends on common stock | (746) |  |  |  |  | (746) |  |
Dividends on preferred stock | (400) |  | 6 |  | 438 | (844) |  |
Issuance of warrants on common stock | 4 |  |  |  | 767 | (763) |  |
Berkshire Warrants | 103 |  |  |  | 103 |  |  |
Issuance of common stock and other, net | 290 |  | 1 |  | 289 |  |  |
Purchases of treasury stock | (12) |  |  | (12) |  |  |  |
Ending balance at Dec. 31, 2020 | $ 18,573 | $ 9,762 | $ 216 | $ (10,665) | $ 16,552 | $ 2,996 | $ (288) | $ 0

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