Discontinued Operations Income Statement (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Expenses
Net income (loss) from discontinued operations	$ (2)	$ (4)	$ 5	$ 857
Tempo Business \| Discontinued Operations, Disposed of by Sale
Revenue
Total revenue	0	0	0	698
Expenses
Total operating expenses	4	14	7	640
Operating income (loss) from discontinued operations	(4)	(14)	(7)	58
Other income (expense)	0	(1)	0	10
Income (loss) from discontinued operations before income taxes	(4)	(15)	(7)	68
Income tax expense (benefit)	(2)	(6)	(3)	14
Net income (loss) from discontinued operations excluding gain	(2)	(9)	(4)	54
Gain on sale of discontinued operations, net of tax	0	5	9	803
Net income (loss) from discontinued operations	$ (2)	$ (4)	$ 5	$ 857

Disposal Group, Including Discontinued Operation, Other Income (Expense)

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