Discontinued Operations - Summary of Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Cash and cash equivalents		$ 52
Accounts receivable, net		9
Other current assets		80
Total current assets of discontinued operations	$ 0	141
Long-term investments		11
Property and equipment, net		26
Goodwill		224
Intangible assets, net		5
Operating lease right-of-use assets		29
Deferred tax assets		8
Other assets		3
Total long-term assets of discontinued operations	0	306
Accounts payable		19
Accrued expenses and other current liabilities		215
Deferred revenue		23
Income taxes payable		2
Total current liabilities of discontinued operations	0	259
Operating lease liabilities		20
Other liabilities		6
Total long-term liabilities of discontinued operations	$ 0	$ 26