Discontinued Operations Income Statement (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Total operating expenses (1)
Income from discontinued operations excluding gain, net of tax	$ 23,000,000	$ 35,000,000	$ 63,000,000	$ 60,000,000
Gain on sale of discontinued operations, net of tax		0	798,000,000	0
Income from discontinued operations, net of tax	821,000,000	35,000,000	861,000,000	60,000,000
Tempo Business | Discontinued Operations, Disposed of by Sale
Revenue
Total revenue	171,000,000	518,000,000	698,000,000	1,047,000,000
Total operating expenses (1)
Operating expense	156,000,000	466,000,000	626,000,000	952,000,000
Operating Income from discontinued operations	15,000,000	52,000,000	72,000,000	95,000,000
Other income	11,000,000	1,000,000	11,000,000	1,000,000
Income from discontinued operations before income taxes	26,000,000	53,000,000	83,000,000	96,000,000
Income taxes	3,000,000	18,000,000	20,000,000	36,000,000
Gain on sale of discontinued operations, net of tax	798,000,000
Income from discontinued operations, net of tax	821,000,000	35,000,000	861,000,000	60,000,000
Depreciation and amortization	$ 0
Depreciation of fixed assets		17,000,000	8,000,000	35,000,000
Amortization of intangible assets		$ 30,000,000	$ 11,000,000	$ 60,000,000