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CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions | Total | Common Stock | Preferred Stock | Treasury Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Non-controlling Interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 20,572 | $ 179 | $ 0 | $ (9,168) | $ 7,884 | $ 21,935 | $ (258) | $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income (loss) | 3,425 |  |  |  |  | 3,425 |  |
Other comprehensive income (loss), net of tax | 161 |  |  |  |  |  | 161 |
Dividends on common stock | (1,783) |  |  |  |  | (1,783) |  |
Issuance of common stock and other, net | 107 |  |  |  | 107 |  |  |
Purchases of treasury stock | (994) |  |  | (994) |  |  |  |
Reclassification of stranded tax effects |  |  |  |  |  | 58 | (58) |
Noncontrolling interest contributions, net | 0 |  |  |  |  |  |  | 0
Ending balance at Sep. 30, 2018 | 21,488 | 179 | 0 | (10,162) | 7,991 | 23,635 | (155) | 0
Beginning balance at Jun. 30, 2018 | 20,931 | 179 | 0 | (9,268) | 7,967 | 22,361 | (308) | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income (loss) | 1,869 |  |  |  |  | 1,869 |  |
Other comprehensive income (loss), net of tax | 153 |  |  |  |  |  | 153 |
Dividends on common stock | (595) |  |  |  |  | (595) |  |
Issuance of common stock and other, net | 24 | 0 |  |  | 24 |  |  |
Purchases of treasury stock | (894) |  |  | (894) |  |  |  |
Reclassification of stranded tax effects |  |  |  |  |  | 0 | 0 |
Noncontrolling interest contributions, net | 0 |  |  |  |  |  |  | 0
Ending balance at Sep. 30, 2018 | 21,488 | 179 | 0 | (10,162) | 7,991 | 23,635 | (155) | 0
Beginning balance at Dec. 31, 2018 | 21,330 | 179 | 0 | (10,473) | 8,046 | 23,750 | (172) | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income (loss) | 514 |  |  |  |  | 472 |  | 42
Other comprehensive income (loss), net of tax | (160) |  |  |  |  |  | (160) |
Dividends on common stock | (1,877) |  |  |  |  | (1,877) |  |
Dividends on preferred stock | (118) |  |  |  |  | (118) |  |
Issuance of common stock and other, net | 6,851 | 30 |  |  | 6,821 |  |  |
Issuance of preferred stock, net | 9,762 |  | 9,762 |  |  |  |  |
Purchases of treasury stock | (180) |  |  | (180) |  |  |  |
Fair value of noncontrolling interest acquired | 4,875 |  |  |  |  |  |  | 4,875
Noncontrolling interest contributions, net | 8 |  |  |  |  |  |  | 8
Ending balance at Sep. 30, 2019 | 41,005 | 209 | 9,762 | (10,653) | 14,867 | 22,227 | (332) | 4,925
Beginning balance at Jun. 30, 2019 | 21,347 | 179 | 0 | (10,653) | 8,157 | 23,848 | (184) | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net income (loss) | (752) |  |  |  |  | (794) |  | 42
Other comprehensive income (loss), net of tax | (148) |  |  |  |  |  | (148) |
Dividends on common stock | (709) |  |  |  |  | (709) |  |
Dividends on preferred stock | (118) |  |  |  |  | (118) |  |
Issuance of common stock and other, net | 6,740 | 30 |  |  | 6,710 |  |  |
Issuance of preferred stock, net | 9,762 |  | 9,762 |  |  |  |  |
Fair value of noncontrolling interest acquired | 4,875 |  |  |  |  |  |  | 4,875
Noncontrolling interest contributions, net | 8 |  |  |  |  |  |  | 8
Ending balance at Sep. 30, 2019 | $ 41,005 | $ 209 | $ 9,762 | $ (10,653) | $ 14,867 | $ 22,227 | $ (332) | $ 4,925

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