Condensed Consolidated Statements of Operations Condensed Consolidated Statement of Operations (parentheticals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Discontinued Operation, Tax Effect of Discontinued Operation	$ 0	$ (1)	$ 0	$ 3
Asset Impairment Expense [Member]
Discontinued Operation, Tax Effect of Discontinued Operation	$ 0	$ 401	$ 0	$ 401

- Definition

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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