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Change in Accounting Principle - Statements of Shareholders' Equity (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | $ 2,092 |  |
Net income (loss) attributable to Chesapeake | (308) | $ 226 | $ (505)
Chesapeake stockholders’ equity, end of period | 4,364 | 2,092 |
Stockholders' equity attributable to noncontrolling interest, beginning of period | 41 |  |
Net income attributable to noncontrolling interests | 0 | (2) | (3)
Stockholders' equity attributable to noncontrolling interest, end of period | 37 | 41 |
TOTAL EQUITY | 4,401 | 2,133 | 1,943
As Previously Reported Under Full Cost |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 344 |  |
Net income (loss) attributable to Chesapeake | 209 | 873 | 949
Chesapeake stockholders’ equity, end of period | 3,133 | 344 |
Stockholders' equity attributable to noncontrolling interest, beginning of period | 123 |  |
Net income attributable to noncontrolling interests | (2) | (4) | (4)
Stockholders' equity attributable to noncontrolling interest, end of period | 121 | 123 |
TOTAL EQUITY | 3,254 | 467 | (372)
Successful Efforts Adjustment |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 1,748 |  |
Net income (loss) attributable to Chesapeake | (517) | (647) | (1,454)
Chesapeake stockholders’ equity, end of period | 1,231 | 1,748 |
Stockholders' equity attributable to noncontrolling interest, beginning of period | (82) |  |
Net income attributable to noncontrolling interests | 2 | 2 | 1
Stockholders' equity attributable to noncontrolling interest, end of period | (84) | (82) |
TOTAL EQUITY | 1,147 | 1,666 | 2,315
Retained earnings |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | (13,912) | (14,130) | (13,625)
Net income (loss) attributable to Chesapeake | (308) | 226 | (505)
Chesapeake stockholders’ equity, end of period | (14,220) | (13,912) | (14,130)
Retained earnings | As Previously Reported Under Full Cost |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | (15,660) | (16,525) | (17,474)
Net income (loss) attributable to Chesapeake | 209 | 873 | 949
Chesapeake stockholders’ equity, end of period | (15,451) | (15,660) | (16,525)
Retained earnings | Successful Efforts Adjustment |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 1,748 | 2,395 | 3,849
Net income (loss) attributable to Chesapeake | (517) | (647) | (1,454)
Chesapeake stockholders’ equity, end of period | 1,231 | 1,748 | 2,395
Parent |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 2,092 | 1,899 |
Chesapeake stockholders’ equity, end of period | 4,364 | 2,092 | 1,899
Parent | As Previously Reported Under Full Cost |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 344 | (496) |
Chesapeake stockholders’ equity, end of period | 3,133 | 344 | (496)
Parent | Successful Efforts Adjustment |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Chesapeake stockholders’ equity, beginning of period | 1,748 | 2,395 |
Chesapeake stockholders’ equity, end of period | 1,231 | 1,748 | 2,395
Noncontrolling Interest |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Stockholders' equity attributable to noncontrolling interest, beginning of period | 41 | 44 | 49
Net income attributable to noncontrolling interests | 0 | 2 | 3
Stockholders' equity attributable to noncontrolling interest, end of period | 37 | 41 | 44
Noncontrolling Interest | As Previously Reported Under Full Cost |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Stockholders' equity attributable to noncontrolling interest, beginning of period | 123 | 124 | 128
Net income attributable to noncontrolling interests | 2 | 4 | 4
Stockholders' equity attributable to noncontrolling interest, end of period | 121 | 123 | 124
Noncontrolling Interest | Successful Efforts Adjustment |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Stockholders' equity attributable to noncontrolling interest, beginning of period | (82) | (80) | (79)
Net income attributable to noncontrolling interests | (2) | (2) | (1)
Stockholders' equity attributable to noncontrolling interest, end of period | $ (84) | $ (82) | $ (80)

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