CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 4,907	$ 4,315
Marketable securities	13,527	6,884
Accounts receivable, net of allowances for doubtful accounts of $68 and $39 as of December 31, 2015 and December 31, 2014, respectively	2,559	1,678
Prepaid expenses and other current assets	659	513
Total current assets	21,652	13,390
Property and equipment, net	5,687	3,967
Intangible assets, net	3,246	3,929
Goodwill	18,026	17,981
Other assets	796	699
Total assets	49,407	39,966
Current liabilities:
Accounts payable	196	176
Partners payable	217	202
Accrued expenses and other current liabilities	1,449	866
Deferred revenue and deposits	56	66
Current portion of capital lease obligations	7	114
Total current liabilities	1,925	1,424
Capital lease obligations, less current portion	107	119
Other liabilities	3,157	2,327
Total liabilities	$ 5,189	$ 3,870
Commitments and contingencies
Stockholders' equity:
Common stock, $0.000006 par value; 5,000 million Class A shares authorized, 2,293 million and 2,234 million shares issued and outstanding, including 8 million and 13 million outstanding shares subject to repurchase, as of December 31, 2015 and December 31, 2014, respectively; 4,141 million Class B shares authorized, 552 million and 563 million shares issued and outstanding, including 3 million and 6 million outstanding shares subject to repurchase, as of December 31, 2015 and December 31, 2014, respective	$ 0	$ 0
Additional paid-in capital	34,886	30,225
Accumulated other comprehensive loss	(455)	(228)
Retained earnings	9,787	6,099
Total stockholders' equity	44,218	36,096
Total liabilities and stockholders' equity	$ 49,407	$ 39,966