Geographical Information - Property and Equipment, Net (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Long-Lived Assets By Geographical Area
Total property and equipment, net		$ 7,899	$ 5,687
United States
Long-Lived Assets By Geographical Area
Total property and equipment, net		6,239	4,498
Rest of the world
Long-Lived Assets By Geographical Area
Total property and equipment, net	[1]	$ 1,660	1,189
Sweden
Long-Lived Assets By Geographical Area
Total property and equipment, net			$ 713

[1] As of September 30, 2016, property and equipment, net in Sweden no longer exceeded 10% of our total property and equipment, net. As of December 31, 2015, such balance was $713 million. Other than disclosed, no individual country exceeded 10% of our total property and equipment, net for any period presented.