Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,077,590	$ 2,667,778
Short-term marketable securities	1,330,304	1,516,175
Accounts receivable, net of allowance of $32,635 and $35,549 as of December 31, 2012 and 2013, respectively	979,559	1,008,448
Prepaid expenses and other current assets	638,404	460,312
Total current assets	5,025,857	5,652,713
Long-term marketable securities	1,589,500	1,838,425
Property and equipment, net	1,488,518	1,685,845
Goodwill	4,679,648	3,826,749
Intangible assets, net	417,808	153,973
Other long-term assets	177,281	289,130
Investments in equity interests	3,426,347	2,840,157
Total assets	16,804,959	17,103,253
Current liabilities:
Accounts payable	138,031	184,831
Accrued expenses and other current liabilities	907,782	808,475
Deferred revenue	294,499	296,926
Total current liabilities	1,340,312	1,290,232
Convertible notes	1,110,585
Long-term deferred revenue	258,904	407,560
Capital lease and other long-term liabilities	116,605	124,587
Deferred and other long-term tax liabilities, net	847,956	675,271
Total liabilities	3,674,362	2,497,650
Commitments and contingencies (Note 12)
Yahoo! Inc. stockholders' equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; none issued or outstanding
Common stock, $0.001 par value; 5,000,000 shares authorized; 1,189,816 shares issued and 1,115,233 shares outstanding as of December 31, 2012, and 1,019,812 shares issued and 1,014,338 shares outstanding as of December 31, 2013	1,015	1,187
Additional paid-in capital	8,688,304	9,563,348
Treasury stock at cost, 74,583 shares as of December 31, 2012, and 5,474 shares as of December 31, 2013	(200,228)	(1,368,043)
Retained earnings	4,267,429	5,792,459
Accumulated other comprehensive income	318,389	571,249
Total Yahoo! Inc. stockholders' equity	13,074,909	14,560,200
Noncontrolling interests	55,688	45,403
Total equity	13,130,597	14,605,603
Total liabilities and equity	16,804,959	17,103,253
Redeemable Preferred Stock
Current assets:
Alibaba Group Preference Shares		$ 816,261