SPIN OFF OF CALIFORNIA RESOURCES CORPORATION - OPERATIONS (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sales and other operating revenues and income from discontinued operations
Income tax expense	$ 249.0	$ 1.0	$ 454.0
Income from discontinued operations	$ 428.0	$ 317.0	760.0
California Resources Corporation \| Spin-off California Resources Corp
Sales and other operating revenues and income from discontinued operations
Sales and other operating revenue from discontinued operations			3,951.0
Income from discontinued operations before-tax			1,205.0
Income tax expense			440.0
Income from discontinued operations			$ 765.0

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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