Condensed Consolidated Statements of Operations Condensed Consolidated Statement of Operations (parentheticals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period	$ 0	$ (2)	$ 0	$ (2)
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	$ 0	$ (42)	$ 0	$ (42)

Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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