Geographical Information - Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue by Geographical Area
Revenue		$ 27,638	$ 17,928	$ 12,466
United States
Revenue by Geographical Area
Revenue		12,579	8,513	5,649
Rest of the world
Revenue by Geographical Area
Revenue	[1]	$ 15,059	$ 9,415	$ 6,817

[1] No individual country, other than disclosed above, exceeded 10% of our total revenue for any period presented.