Stockholders' Equity - Common Stock (Details)	Dec. 31, 2016 vote $ / shares shares	Dec. 31, 2015 $ / shares shares
Class of Stock
Common stock, par value | $ / shares	$ 0.000006	$ 0.000006
Class A Common Stock
Class of Stock
Common stock, shares authorized	5,000,000,000	5,000,000,000
Common stock, par value | $ / shares	$ 0.000006
Common stock, number of votes by class | vote	1
Common stock, shares, issued	2,354,000,000	2,293,000,000
Common stock, shares, outstanding	2,354,000,000	2,293,000,000
Class B Common Stock
Class of Stock
Common stock, shares authorized	4,141,000,000	4,141,000,000
Common stock, par value | $ / shares	$ 0.000006
Common stock, number of votes by class | vote	10
Common stock, shares, issued	538,000,000	552,000,000
Common stock, shares, outstanding	538,000,000	552,000,000