Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue	$ 4,680,380	$ 4,986,566	$ 4,984,199
Operating expenses:
Cost of revenue-traffic acquisition costs	254,442	518,906	603,371
Cost of revenue-other	1,094,938	1,101,660	983,626
Sales and marketing	1,130,820	1,101,572	1,122,193
Product development	1,008,487	885,824	919,368
General and administrative	569,555	540,247	497,288
Amortization of intangibles	44,841	35,819	33,592
Gains on sales of patents	(79,950)
Goodwill impairment charge	63,555
Restructuring charges, net	3,766	236,170	24,420
Total operating expenses	4,090,454	4,420,198	4,183,858
Income from operations	589,926	566,368	800,341
Other income, net	43,357	4,647,839	27,175
Income before income taxes and earnings in equity interests	633,283	5,214,207	827,516
Provision for income taxes	(153,392)	(1,940,043)	(241,767)
Earnings in equity interests	896,675	676,438	476,920
Net income	1,376,566	3,950,602	1,062,669
Less: Net income attributable to noncontrolling interests	(10,285)	(5,123)	(13,842)
Net income attributable to Yahoo! Inc.	1,366,281	3,945,479	1,048,827
Net income attributable to Yahoo! Inc. common stockholders per share-basic	$ 1.30	$ 3.31	$ 0.82
Net income attributable to Yahoo! Inc. common stockholders per share-diluted	$ 1.26	$ 3.28	$ 0.82
Shares used in per share calculation-basic	1,052,705	1,192,775	1,274,240
Shares used in per share calculation-diluted	1,070,811	1,202,906	1,282,282
Stock-based compensation expense by function:
Stock-based compensation expense	278,220	224,365	203,958
Restructuring expense accelerations (reversals), net		(3,429)	214
Cost of revenue - other
Stock-based compensation expense by function:
Stock-based compensation expense	15,545	10,078	12,017
Sales and marketing
Stock-based compensation expense by function:
Stock-based compensation expense	101,852	82,115	65,176
Product development
Stock-based compensation expense by function:
Stock-based compensation expense	83,396	74,284	80,668
General and administrative
Stock-based compensation expense by function:
Stock-based compensation expense	$ 77,427	$ 57,888	$ 46,097