Altaba (AABA) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'YHOO	'
Entity Registrant Name	'YAHOO INC	'
Entity Central Index Key	'0001011006	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	1,006,808,134

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$1,198,016	$2,077,590
Short-term marketable securities	1,741,494	1,330,304
Accounts receivable, net	879,992	979,559
Prepaid expenses and other current assets	662,372	638,404
Total current assets	4,481,874	5,025,857
Long-term marketable securities	1,631,819	1,589,500
Property and equipment, net	1,479,406	1,488,518
Goodwill	4,699,319	4,679,648
Intangible assets, net	393,355	417,808
Other long-term assets	178,319	177,281
Investments in equity interests	3,728,823	3,426,347
Total assets	16,592,915	16,804,959
Current liabilities:	'	'
Accounts payable	156,782	138,031
Accrued expenses and other current liabilities	746,828	907,782
Deferred revenue	291,265	294,499
Total current liabilities	1,194,875	1,340,312
Convertible notes	1,125,251	1,110,585
Long-term deferred revenue	222,366	258,904
Capital lease and other long-term liabilities	108,847	116,605
Deferred and other long-term tax liabilities	978,372	847,956
Total liabilities	3,629,711	3,674,362
Commitments and contingencies (Note 12)	'	'
Yahoo! Inc. stockholders' equity:	'	'
Common stock, $0.001 par value; 5,000,000 shares authorized; 1,019,812 shares issued and 1,014,338 shares outstanding as of December 31, 2013 and 1,028,144 shares issued and 1,010,730 shares outstanding as of March 31, 2014	1,023	1,015
Additional paid-in capital	8,811,720	8,688,304
Treasury stock at cost, 5,474 shares as of December 31, 2013 and 17,414 shares as of March 31, 2014	-649,806	-200,228
Retained earnings	4,579,007	4,267,429
Accumulated other comprehensive income	163,239	318,389
Total Yahoo! Inc. stockholders' equity	12,905,183	13,074,909
Noncontrolling interests	58,021	55,688
Total equity	12,963,204	13,130,597
Total liabilities and equity	$16,592,915	$16,804,959

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	1,028,144	1,019,812
Common stock, shares outstanding	1,010,730	1,014,338
Treasury stock at cost, shares	17,414	5,474

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue	$1,132,730	$1,140,368
Operating expenses:	'	'
Cost of revenue - traffic acquisition costs	45,909	66,068
Cost of revenue - other	280,844	278,007
Sales and marketing	329,846	257,019
Product development	281,632	219,580
General and administrative	136,493	133,421
Amortization of intangibles	18,340	7,365
Restructuring (reversals) charges, net	9,487	-7,062
Total operating expenses	1,102,551	954,398
Income from operations	30,179	185,970
Other income (expense), net	-13,453	17,072
Income before income taxes and earnings in equity interests	16,726	203,042
Provision for income taxes	-4,217	-29,736
Earnings in equity interests	301,402	217,588
Net income	313,911	390,894
Net income attributable to noncontrolling interests	-2,333	-609
Net income attributable to Yahoo! Inc.	311,578	390,285
Net income attributable to Yahoo! Inc. common stockholders per share - basic	$0.31	$0.36
Net income attributable to Yahoo! Inc. common stockholders per share - diluted	$0.29	$0.35
Shares used in per share calculation - basic	1,009,890	1,094,170
Shares used in per share calculation - diluted	1,031,420	1,108,095
Stock-based compensation expense by function:	'	'
Stock-based compensation expense	109,181	44,605
Cost of revenue - other	'	'
Stock-based compensation expense by function:	'	'
Stock-based compensation expense	22,687	3,578
Sales and marketing	'	'
Stock-based compensation expense by function:	'	'
Stock-based compensation expense	52,638	16,045
Product development	'	'
Stock-based compensation expense by function:	'	'
Stock-based compensation expense	13,927	8,263
General and administrative	'	'
Stock-based compensation expense by function:	'	'
Stock-based compensation expense	$19,929	$16,719

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Comprehensive income	'	'
Net income	$313,911	$390,894
Available-for-sale securities:	'	'
Unrealized gains (losses) on available-for-sale securities, net of taxes of $154 and $(898) for the three months ended March 31, 2013 and 2014, respectively	6,728	1,036
Reclassification adjustment for realized (gains) losses on available-for-sale securities included in net income, net of taxes of $24 and $8 for the three months ended March 31, 2013 and 2014, respectively	-12	-37
Net change in unrealized gains on available-for-sale securities, net of tax	6,716	999
Foreign currency translation adjustments ("CTA"):	'	'
Foreign CTA gains (losses), net of taxes of $162 and $236 for the three months ended March 31, 2013 and 2014, respectively	-146,857	-281,505
Net investment hedge CTA gains (losses), net of taxes of $(101,296) and $8,432 for the three months ended March 31, 2013 and 2014, respectively	-14,049	168,714
Net foreign CTA losses, net of tax	-160,906	-112,791
Cash flow hedges:	'	'
Unrealized gains (losses) on cash flow hedges, net of taxes of $0 and $304 for the three months ended March 31, 2013 and 2014, respectively	-506	'
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, net of taxes of $0 and $273 for the three months ended March 31, 2013 and 2014, respectively	-454	'
Net change in unrealized losses on cash flow hedges, net of tax	-960	'
Other comprehensive loss	-155,150	-111,792
Comprehensive income	158,761	279,102
Less: comprehensive income attributable to noncontrolling interests	-2,333	-609
Comprehensive income attributable to Yahoo! Inc.	$156,428	$278,493

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Unrealized gains (losses) on available-for-sale securities, taxes	($898)	$154
Reclassification adjustment for realized (gains) losses on available-for-sale securities included in net income, taxes	8	24
Foreign CTA gains (losses), taxes	236	162
Net investment hedge CTA gains (losses), taxes	8,432	-101,296
Unrealized gains (losses) on cash flow hedges, taxes	304	0
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, taxes	$273	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net income	$313,911	$390,894
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation	123,185	143,864
Amortization of intangible assets	34,349	18,410
Accretion of convertible notes discount	14,666	'
Stock-based compensation expense, net	109,181	44,605
Restructuring charges	'	547
Loss from sales of investments, assets, and other, net	3,550	11,905
Earnings in equity interests	-301,402	-217,588
Dividend income related to Alibaba Group Preference Shares	'	-20,251
Tax benefits from stock-based awards	57,667	9,537
Excess tax benefits from stock-based awards	-59,556	-12,807
Deferred income taxes	14,488	-20,158
Dividends received from equity investees	'	12,000
Changes in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	98,404	57,853
Prepaid expenses and other	-9,211	19,707
Accounts payable	19,492	-71,135
Accrued expenses and other liabilities	-240,175	-123,472
Deferred revenue	-39,488	-25,229
Net cash provided by operating activities	139,061	218,682
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Acquisition of property and equipment, net	-84,655	-69,581
Purchases of marketable securities	-912,097	-1,481,293
Proceeds from sales of marketable securities	168,926	424,347
Proceeds from maturities of marketable securities	281,662	183,100
Acquisitions, net of cash acquired	-21,661	-10,147
Purchases of intangible assets	-1,190	-1,128
Proceeds from settlement of derivative hedge contracts	2,801	4,100
Payments for settlement of derivative hedge contracts	-600	'
Equity investments	-10,399	'
Other investing activities, net	-566	-278
Net cash used in investing activities	-577,779	-950,880
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Proceeds from issuance of common stock, net	78,977	61,108
Repurchases of common stock	-449,578	-775,075
Excess tax benefits from stock-based awards	59,556	12,807
Tax withholdings related to net share settlements of restricted stock units	-125,403	-43,689
Other financing activities, net	-3,093	-1,405
Net cash used in financing activities	-439,541	-746,254
Effect of exchange rate changes on cash and cash equivalents	-1,315	-14,693
Net change in cash and cash equivalents	-879,574	-1,493,145
Cash and cash equivalents at beginning of period	2,077,590	2,667,778
Cash and cash equivalents at end of period	$1,198,016	$1,174,633

THE_COMPANY_AND_SUMMARY_OF_SIG

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2014
THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	Note 1 THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	The Company. Yahoo! Inc., together with its consolidated subsidiaries (“Yahoo” or the “Company”) is focused on making the world’s daily habits inspiring and entertaining. By creating highly personalized experiences for its users, the Company keeps people connected to what matters most to them, across devices and around the world. The Company creates value for advertisers with a streamlined, simplified advertising technology stack that leverages Yahoo’s data, reach and analytics to connect advertisers with their target audiences. For advertisers, the opportunity to be a part of users’ daily habits across products and platforms is a powerful tool to engage audiences and build brand loyalty.
	Advertisers can build their businesses through advertising to targeted audiences on the Company’s online properties and services, or through a distribution network of third party entities (“Affiliates”) who integrate the Company’s advertising offerings into their Websites or other offerings. The Company manages and measures its business geographically, principally in the Americas, EMEA (Europe, Middle East, and Africa) and Asia Pacific.
	Basis of Presentation. The condensed consolidated financial statements include the accounts of Yahoo! Inc. and its majority-owned or otherwise controlled subsidiaries. All significant intercompany accounts and transactions have been eliminated. Investments in entities in which the Company can exercise significant influence, but does not own a majority equity interest or otherwise control, are accounted for using the equity method and are included as investments in equity interests on the condensed consolidated balance sheets. The Company has included the results of operations of acquired companies from the date of the acquisition. Certain prior period amounts have been reclassified to conform to the current period presentation.
	The accompanying unaudited condensed consolidated interim financial statements reflect all adjustments, consisting of only normal recurring items, which, in the opinion of management, are necessary for a fair statement of the results of operations for the periods shown. The results of operations for such periods are not necessarily indicative of the results expected for the full year or for any future periods.
	The preparation of consolidated financial statements in conformity with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”) requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets, liabilities, revenue, and expenses and the related disclosure of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to revenue, the useful lives of long-lived assets including property and equipment and intangible assets, investment fair values, stock-based compensation, goodwill, income taxes, contingencies, and restructuring charges. The Company bases its estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results may differ from these estimates.
	These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The condensed consolidated balance sheet as of December 31, 2013 was derived from the Company’s audited financial statements for the year ended December 31, 2013, but does not include all disclosures required by U.S. GAAP. However, the Company believes the disclosures are adequate to make the information presented not misleading.

INVESTMENTS_AND_FAIR_VALUE_MEA

INVESTMENTS AND FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2014
INVESTMENTS AND FAIR VALUE MEASUREMENTS	'
	Note 2 INVESTMENTS AND FAIR VALUE MEASUREMENTS
	The following tables summarize the investments in available-for-sale securities (in thousands):
			December 31, 2013
			Gross		Gross			Gross			Estimated
			Amortized		Unrealized			Unrealized			Fair Value
			Costs		Gains			Losses
	Government and agency securities		$	538,397	$	65		$	(101	)	$	538,361
	Corporate debt securities, commercial paper, and bank certificates of deposit			2,380,134		2,525			(1,216	)		2,381,443
	Corporate equity securities			230		153			—			383
	Total investments in available-for-sale securities		$	2,918,761	$	2,743		$	(1,317	)	$	2,920,187
			March 31, 2014
			Gross		Gross			Gross			Estimated
			Amortized		Unrealized			Unrealized			Fair Value
			Costs		Gains			Losses
	Government and agency securities		$	566,470	$	335		$	(188	)	$	566,617
	Corporate debt securities, commercial paper, and bank certificates of deposit			2,805,485		2,512			(1,301	)		2,806,696
	Corporate equity securities			230		249			—			479
	Total investments in available-for-sale securities		$	3,372,185	$	3,096		$	(1,489	)	$	3,373,792
			December 31,		March 31,
			2013		2014
	Reported as:
	Short-term marketable securities		$	1,330,304	$	1,741,494
	Long-term marketable securities			1,589,500		1,631,819
	Other assets			383		479
	Total		$	2,920,187	$	3,373,792
	Short-term, highly liquid investments included in cash and cash equivalents on the condensed consolidated balance sheets are not included in the table above as the gross unrealized gains and losses were immaterial as of December 31, 2013 and March 31, 2014 as the carrying value approximates fair value because of the short maturity of those instruments. Realized gains and losses from sales of marketable securities were not material for both the three months ended March 31, 2013 and 2014.
	The contractual maturities of available-for-sale marketable securities were as follows (in thousands):
			December 31,		March 31,
			2013		2014
	Due within one year		$	1,330,304	$	1,741,494
	Due after one year through five years			1,589,500		1,631,819
	Total available-for-sale marketable securities		$	2,919,804	$	3,373,313
	The following tables show all investments in an unrealized loss position for which an other-than-temporary impairment has not been recognized and the related gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
			December 31, 2013
			Less than 12 Months					12 Months or Longer						Total
			Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Loss			Value			Loss			Value		Loss
	Government and agency securities		$	263,514	$	(101	)	$	—		$	—		$	263,514	$	(101	)
	Corporate debt securities, commercial paper, and bank certificates of deposit			696,950		(1,214	)		3,833			(2	)		700,783		(1,216	)
	Total investments in available-for-sale securities		$	960,464	$	(1,315	)	$	3,833		$	(2	)	$	964,297	$	(1,317	)
			March 31, 2014
			Less than 12 Months					12 Months or Longer						Total
			Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Loss			Value			Loss			Value		Loss
	Government and agency securities		$	138,841	$	(181	)	$	18,762		$	(7	)	$	157,603	$	(188	)
	Corporate debt securities, commercial paper, and bank certificates of deposit			852,227		(1,141	)		37,090			(160	)		889,317		(1,301	)
	Total investments in available-for-sale securities		$	991,068	$	(1,322	)	$	55,852		$	(167	)	$	1,046,920	$	(1,489	)
	The Company’s investment portfolio consists of liquid high-quality fixed income government, agency and corporate debt securities, money market funds, and time deposits with financial institutions. Investments in both fixed rate and floating rate interest earning instruments carry a degree of interest rate risk. Fixed rate securities may have their fair value adversely impacted due to a rise in interest rates, while floating rate securities may produce less income than expected if interest rates fall. Fixed income securities may have their fair value adversely impacted due to a deterioration of the credit quality of the issuer. The longer the term of the securities, the more susceptible they are to changes in market rates. Investments are reviewed periodically to identify possible other-than-temporary impairment. The Company has no current requirement or intent to sell the securities in an unrealized loss position. The Company expects to recover up to (or beyond) the initial cost of investment for securities held.
	The following table sets forth the financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of December 31, 2013 (in thousands):
			Fair Value Measurements at Reporting Date Using
	Assets		Level 1		Level 2			Total
	Money market funds(1)		$	936,438	$	—		$	936,438
	Available-for-sale securities:
	Government and agency securities(1)			—		876,197			876,197
	Commercial paper and bank certificates of deposit(1)			—		472,080			472,080
	Corporate debt securities(1)			—		2,059,159			2,059,159
	Time deposits(1)			—		84,443			84,443
	Corporate equity securities(2)			370		—			370
	Foreign currency derivative contracts(3)			—		214,041			214,041
	Financial assets at fair value		$	936,808	$	3,705,920		$	4,642,728
	Liabilities
	Foreign currency derivative contracts(3)			—		(1,401	)		(1,401	)
	Total financial assets and liabilities at fair value		$	936,808	$	3,704,519		$	4,641,327
The following table sets forth the financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of March 31, 2014 (in thousands):
		Fair Value Measurements at Reporting Date Using
Assets		Level 1		Level 2			Total
Money market funds(1)		$	392,140	$	—		$	392,140
Available-for-sale securities:
Government and agency securities(1)			—		608,619			608,619
Commercial paper and bank certificates of deposit(1)			—		416,835			416,835
Corporate debt securities(1)			—		2,392,063			2,392,063
Time deposits(1)			—		96,711			96,711
Corporate equity securities(2)			479		—			479
Foreign currency derivative contracts(3)			—		187,775			187,775
Financial assets at fair value		$	392,619	$	3,702,003		$	4,094,622
Liabilities
Foreign currency derivative contracts(3)			—		(1,973	)		(1,973	)
Total financial assets and liabilities at fair value		$	392,619	$	3,700,030		$	4,092,649
(1)	The money market funds, government and agency securities, commercial paper and bank certificates of deposit, corporate debt securities, and time deposits are classified as part of either cash and cash equivalents or investments in marketable securities in the condensed consolidated balance sheets.
(2)	The corporate equity securities are classified as part of other long-term assets in the condensed consolidated balance sheets.
(3)	Foreign currency derivative contracts are classified as part of either other current assets or other current liabilities in the condensed consolidated balance sheets. The notional amounts of the foreign currency derivative contracts were $1.8 billion, including contracts designated as net investment hedges of $1.3 billion, as of December 31, 2013, and $1.7 billion, including contracts designated as net investment hedges of $1.3 billion, as of March 31, 2014.
The amount of cash and cash equivalents as of December 31, 2013 and March 31, 2014 included $569 million and $665 million, respectively, in cash deposits.
The fair values of the Company’s Level 1 financial assets and liabilities are based on quoted market prices of the identical underlying security. The fair values of the Company’s Level 2 financial assets and liabilities are obtained using quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets in markets that are not active; and inputs other than quoted prices, e.g., interest rates and yield curves. The Company utilizes a pricing service to assist in obtaining fair value pricing for the majority of the investment portfolio.
Convertible Senior Notes
In 2013, the Company issued $1.4375 billion aggregate principal amount of 0.00% Convertible Senior Notes due 2018 (the “Notes”). The Notes are carried at their original issuance value, net of unamortized debt discount, and are not marked to market each period. The approximate fair value of the Notes as of both December 31, 2013 and March 31, 2014 was $1.1 billion. The fair value of the Notes was estimated on the basis of quoted market prices observable in the market and is considered Level 2 in the fair value hierarchy. See Note 11—“Convertible Notes” for additional information related to the Notes.
Activity between Levels of the Fair Value Hierarchy. During the year ended December 31, 2013 and the three months ended March 31, 2014, the Company did not make any transfers between Level 1 and Level 2 assets or liabilities.

CONSOLIDATED_FINANCIAL_STATEME

CONSOLIDATED FINANCIAL STATEMENT DETAILS	3 Months Ended
	Mar. 31, 2014
CONSOLIDATED FINANCIAL STATEMENT DETAILS	'
	Note 3 CONSOLIDATED FINANCIAL STATEMENT DETAILS
	Accumulated Other Comprehensive Income
	The components of accumulated other comprehensive income were as follows (in thousands):
		December 31,			March 31,
		2013			2014
	Unrealized gains on available-for-sale securities, net of tax	$	15,101		$	23,229
	Unrealized gains (losses) on cash flow hedges, net of tax		1,412			(960	)
	Foreign currency translation, net of tax		301,876			140,970
	Accumulated other comprehensive income	$	318,389		$	163,239
	Noncontrolling Interests
	Noncontrolling interests were as follows (in thousands):
		December 31,			March 31,
		2013			2014
	Beginning noncontrolling interests	$	45,403		$	55,688
	Net income attributable to noncontrolling interests		10,285			2,333
	Ending noncontrolling interests	$	55,688		$	58,021
	Other Income (Expense), Net
	Other income, net was as follows (in thousands):
		Three Months Ended
		March 31,			March 31,
		2013			2014
	Interest, dividend and investment income	$	25,918		$	5,437
	Interest expense		(2,273	)		(17,081	)
	Other expense, net		(6,573	)		(1,809	)
	Total other income (expense), net	$	17,072		$	(13,453	)
	Interest, dividend and investment income consists of income earned from cash in bank accounts, investments made in marketable securities and money market funds, and dividend income on the Alibaba Group Preference Shares.
	Interest expense is related to the Notes and capital lease obligations for buildings and data centers.
	Other expense, net consists of gains and losses from sales or impairments of marketable securities and/or investments in privately-held companies, foreign exchange gains and losses due to re-measurement of monetary assets and liabilities denominated in non-functional currencies, and unrealized and realized foreign currency transaction gains and losses, including gains and losses related to balance sheet hedges.
	Reclassifications Out of Accumulated Other Comprehensive Income
	Reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2013 were as follows (in thousands):
		Amount			Affected Line Item in the
		Reclassified from			Statement of Income
		Accumulated
		Other
		Comprehensive
		Income
	Realized gains on available-for-sale securities, net of tax	$	(37	)	Other income, net
	Total reclassifications for the period	$	(37	)
	Reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2014 were as follows (in thousands):
		Amount			Affected Line Item in the
		Reclassified from			Statement of Income
		Accumulated
		Other
		Comprehensive
		Income
	Realized gains on cash flow hedges, net of tax	$	(454	)	Revenue
	Realized gains on available-for-sale securities, net of tax		(12	)	Other income, net
	Total reclassifications for the period	$	(466	)

ACQUISITIONS

ACQUISITIONS	3 Months Ended
	Mar. 31, 2014
ACQUISITIONS	'
	Note 4 ACQUISITIONS
	During the three months ended March 31, 2013, the Company acquired three companies, all of which were accounted for as business combinations. The total purchase price for these acquisitions was $10 million and consisted entirely of cash consideration, primarily allocated to goodwill. Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired and is not deductible for tax purposes.
	During the three months ended March 31, 2014, the Company acquired five companies, all of which were accounted for as business combinations. The total purchase price for these acquisitions was $23 million less cash acquired of $1 million, which resulted in a net cash outlay of $22 million. The purchase price for the assets and liabilities assumed was allocated based on their estimated fair values as follows: $9 million to amortizable intangibles; $1 million to cash acquired; $3 million to assumed liabilities; and the remainder of $16 million to goodwill.
	The Company’s business combinations completed during the three months ended March 31, 2013 and 2014 did not have a material impact on the Company’s condensed consolidated financial statements.

GOODWILL

GOODWILL	3 Months Ended
	Mar. 31, 2014
GOODWILL	'
	Note 5 GOODWILL
	The Company’s goodwill balance was $4.7 billion as of both December 31, 2013 and March 31, 2014, of which $3.8 billion was recorded in the Americas segment, $0.6 billion in the EMEA (Europe, Middle East and Africa) segment, and $0.3 billion in the Asia Pacific segment. The increase in the carrying amount of goodwill of $20 million reflected on the Company’s condensed consolidated balance sheets during the three months ended March 31, 2014 was primarily due to foreign currency translation gains of $4 million and additions to goodwill of $16 million related to acquisitions made during the three months ended March 31, 2014.

INTANGIBLE_ASSETS_NET

INTANGIBLE ASSETS, NET	3 Months Ended
	Mar. 31, 2014
INTANGIBLE ASSETS, NET	'
	Note 6 INTANGIBLE ASSETS, NET
	The following table summarizes the Company’s intangible assets, net (in thousands):
			December 31, 2013		March 31, 2014
			Net		Gross Carrying		Accumulated			Net
					Amount		Amortization(*)
	Customer, affiliate, and advertiser related relationships		$	205,818	$	291,972	$	(100,984	)	$	190,988
	Developed technology and patents			140,499		257,878		(123,699	)		134,179
	Trade names, trademarks, and domain names			71,491		105,978		(37,790	)		68,188
	Total intangible assets, net		$	417,808	$	655,828	$	(262,473	)	$	393,355
	(*)	Cumulative foreign currency translation adjustments, reflecting movement in the currencies of the underlying entities increased total intangible assets by approximately $19 million as of March 31, 2014.
	For the three months ended March 31, 2013 and 2014, the Company recognized amortization expense for intangible assets of $18 million and $34 million, respectively, including $11 million and $16 million in cost of revenue—other for the three months ended March 31, 2013 and 2014, respectively. Based on the current amount of intangibles subject to amortization, the estimated amortization expense for the remainder of 2014 and each of the succeeding years is as follows: nine months ending December 31, 2014: $86 million; 2015: $93 million; 2016: $68 million; 2017: $60 million; 2018: $49 million; and cumulatively thereafter: $20 million.

BASIC_AND_DILUTED_NET_INCOME_A

BASIC AND DILUTED NET INCOME ATTRIBUTABLE TO YAHOO! INC. COMMON STOCKHOLDERS PER SHARE	3 Months Ended
	Mar. 31, 2014
BASIC AND DILUTED NET INCOME ATTRIBUTABLE TO YAHOO! INC. COMMON STOCKHOLDERS PER SHARE	'
	Note 7 BASIC AND DILUTED NET INCOME ATTRIBUTABLE TO YAHOO! INC. COMMON STOCKHOLDERS PER SHARE
	Basic and diluted net income attributable to Yahoo! Inc. common stockholders per share is computed using the weighted average number of common shares outstanding during the period, excluding net income attributable to participating securities (restricted stock units granted under the 1996 Directors’ Stock Plan (the “Directors’ Plan”)). Diluted net income per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares are calculated using the treasury stock method and consist of unvested restricted stock and shares underlying unvested restricted stock units, the incremental common shares issuable upon the exercise of stock options, and shares to be purchased under the 1996 Employee Stock Purchase Plan (the “Employee Stock Purchase Plan”). The Company calculates potential tax windfalls and shortfalls by including the impact of pro forma deferred tax assets.
	The Company takes into account the effect on consolidated net income per share of dilutive securities of entities in which the Company holds equity interests that are accounted for using the equity method.
	Potentially dilutive securities representing approximately 24 million and 2 million shares of common stock for the three months ended March 31, 2013 and 2014, respectively were excluded from the computation of diluted earnings per share for these periods because their effect would have been anti-dilutive.
	The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):
		Three Months Ended
		March 31,			March 31,
		2013			2014
	Basic:
	Numerator:
	Net income attributable to Yahoo! Inc.	$	390,285		$	311,578
	Less: Net income allocated to participating securities		(11	)		(3	)
	Net income attributable to Yahoo! Inc. common stockholders—basic	$	390,274		$	311,575
	Denominator:
	Weighted average common shares		1,094,170			1,009,890
	Net income attributable to Yahoo! Inc. common stockholders per share—basic	$	0.36		$	0.31
	Diluted:
	Numerator:
	Net income attributable to Yahoo! Inc.	$	390,285		$	311,578
	Less: Net income allocated to participating securities		(11	)		(3	)
	Less: Effect of dilutive securities issued by equity investees		(2,119	)		(12,365	)
	Net income attributable to Yahoo! Inc. common stockholders—diluted	$	388,155		$	299,210
	Denominator:
	Denominator for basic calculation		1,094,170			1,009,890
	Weighted average effect of Yahoo! Inc. dilutive securities:
	Restricted stock units		11,427			15,670
	Stock options and employee stock purchase plan		2,498			5,860
	Denominator for diluted calculation		1,108,095			1,031,420
	Net income attributable to Yahoo! Inc. common stockholders per share—diluted	$	0.35		$	0.29

INVESTMENTS_IN_EQUITY_INTEREST

INVESTMENTS IN EQUITY INTERESTS	3 Months Ended
	Mar. 31, 2014
INVESTMENTS IN EQUITY INTERESTS	'
	Note 8 INVESTMENTS IN EQUITY INTERESTS
	The following table summarizes the Company’s investments in equity interests (dollars in thousands):
			December 31,		Percent			March 31,		Percent
			2013		Ownership			2014		Ownership
	Alibaba Group		$	1,018,126		24	%	$	1,360,173		24	%
	Yahoo Japan			2,399,590		35	%		2,346,867		36	%
	Other			8,631		19	%		21,783		17	%
	Total		$	3,426,347				$	3,728,823
	Equity Investment in Alibaba Group. The investment in Alibaba Group Holding Limited (“Alibaba Group”) is being accounted for using the equity method, and the total investment, including net tangible assets, identifiable intangible assets, and goodwill, is classified as part of the investments in equity interests balance on the Company’s condensed consolidated balance sheets. The Company’s accounting policy is to record its share of the results of Alibaba Group, and any related amortization expense and related tax impact, one quarter in arrears within earnings in equity interests in the condensed consolidated statements of income. As of March 31, 2014, the excess of carrying value of the Company’s investment in Alibaba Group and the Company’s proportionate share of the net assets of Alibaba Group is largely attributable to goodwill.
	Initial Repurchase by Alibaba Group. On September 18, 2012 (the “Repurchase Closing Date”), Alibaba Group repurchased 523 million of the 1,047 million ordinary shares of Alibaba Group (the “Shares”) owned by the Company (the “Initial Repurchase”). The Initial Repurchase was made pursuant to the terms of the Share Repurchase and Preference Share Sale Agreement entered into by Yahoo! Inc., Alibaba Group and Yahoo! Hong Kong Holdings Limited, a Hong Kong corporation and wholly-owned subsidiary of Yahoo! Inc. (“YHK”), on May 20, 2012 (as amended on September 11, 2012 and October 14, 2013, the “Repurchase Agreement”). Yahoo received $13.54 per Share, or approximately $7.1 billion in total consideration, for 523 million Shares sold to Alibaba Group. Approximately $6.3 billion of the consideration was received in cash and $800 million was received in Alibaba Group Preference Shares, which Alibaba Group redeemed on May 16, 2013. The Initial Repurchase resulted in a pre-tax gain of approximately $4.6 billion for the year ended December 31, 2012.
	The Repurchase Agreement provided that at the time Alibaba Group completes an initial public offering meeting certain specified criteria (a “Qualified IPO”), Yahoo and YHK would sell, at Alibaba Group’s election (either directly to Alibaba Group or in the Qualified IPO), up to 261.5 million of their remaining Shares. This amount was subsequently reduced to 208.0 million by an amendment to the Repurchase Agreement dated as of October 14, 2013. If Shares are sold back to Alibaba Group in the Qualified IPO, the purchase price per Share will be equal to the per share price in the Qualified IPO less specified fees and underwriter discounts.
	On the Repurchase Closing Date, the Company and Alibaba Group entered into an amendment of their existing Technology and Intellectual Property License Agreement (the “TIPLA”) pursuant to which Alibaba Group made an initial payment to the Company of $550 million in satisfaction of certain future royalty payments under the existing TIPLA. The Company will recognize this revenue over the remaining four-year term of the TIPLA. For both the three months ended March 31, 2013 and 2014, the Company recognized approximately $34 million in revenue related to the TIPLA.
	Alibaba Group will continue making royalty payments until the earlier of the fourth anniversary of the effective date of the amendment and a Qualified IPO. Pursuant to the terms of the TIPLA, the Company also recognized royalty revenue of approximately $35 million and $34 million for the three months ended March 31, 2013 and 2014, respectively.
	The following table presents Alibaba Group’s U.S. GAAP financial information, as derived from the Alibaba Group financial statements (in thousands):
			Three Months Ended
			December 31,		December 31,
			2012		2013
	Operating data:
	Revenue		$	1,840,450	$	3,057,728
	Gross profit(*)		$	1,377,871	$	2,377,427
	Income from operations(*)		$	803,087	$	1,435,687
	Net income		$	649,977	$	1,363,761
	Net income attributable to Alibaba Group		$	642,173	$	1,348,932
			September 30,		December 31,
			2013		2013
	Balance sheet data:
	Current assets		$	7,994,731	$	11,452,808
	Long-term assets		$	5,959,835	$	6,106,707
	Current liabilities		$	4,838,510	$	6,615,917
	Long-term liabilities		$	5,319,113	$	5,325,255
	Convertible preferred shares		$	1,688,889	$	1,699,494
	Noncontrolling interests		$	92,127	$	165,983
	(*)	Certain prior period amounts have been reclassified to conform to the current period presentation with no effect on previously reported net income or stockholders’ equity.
	Equity Investment in Yahoo Japan. The investment in Yahoo Japan Corporation (“Yahoo Japan”) is being accounted for using the equity method and the total investment, including net tangible assets, identifiable intangible assets, and goodwill, is classified as part of the investments in equity interests balance on the Company’s condensed consolidated balance sheets. The Company records its share of the results of Yahoo Japan, and any related amortization expense, one quarter in arrears within earnings in equity interests in the condensed consolidated statements of income.
	The Company makes adjustments to the earnings in equity interests line in the condensed consolidated statements of income for any differences between U.S. GAAP and accounting principles generally accepted in Japan (“Japanese GAAP”), the standards by which Yahoo Japan’s financial statements are prepared.
	The fair value of the Company’s ownership interest in the common stock of Yahoo Japan, based on the quoted stock price, was approximately $10 billion as of March 31, 2014.
	In the first quarter of 2014, the Company sold data center assets and assigned a data center lease to Yahoo Japan for cash proceeds of $11 million and recorded a net gain of approximately $5 million.
	The following tables present summarized financial information derived from Yahoo Japan’s consolidated financial statements, which are prepared on the basis of Japanese GAAP. The Company has made adjustments to the Yahoo Japan financial information to address differences between Japanese GAAP and U.S. GAAP that materially impact the summarized financial information below. Due to these adjustments, the Yahoo Japan summarized financial information presented below is not materially different than such information presented on the basis of U.S. GAAP.
			Three Months Ended
			December 31,		December 31,
			2012		2013
			(In thousands)
	Operating data:
	Revenue		$	1,195,869	$	1,031,656
	Gross profit		$	981,062	$	843,926
	Income from operations		$	614,492	$	489,442
	Net income		$	343,414	$	307,112
	Net income attributable to Yahoo Japan		$	340,550	$	304,345
			September 30,		December 31,
			2013		2013
			(In thousands)
	Balance sheet data:
	Current assets		$	6,318,156	$	5,840,384
	Long-term assets		$	1,728,912	$	1,702,207
	Current liabilities		$	1,992,508	$	1,784,072
	Long-term liabilities		$	56,762	$	53,186
	Noncontrolling interests		$	74,754	$	72,484
	Under technology and trademark license and other commercial arrangements with Yahoo Japan, the Company records revenue from Yahoo Japan based on a percentage of advertising revenue earned by Yahoo Japan. The Company recorded revenue from Yahoo Japan of approximately $70 million and $68 million for the three months ended March 31, 2013 and 2014, respectively. As of December 31, 2013 and March 31, 2014, the Company had net receivable balances from Yahoo Japan of approximately $42 million and $47 million, respectively.

DERIVATIVE_FINANCIAL_INSTRUMEN

DERIVATIVE FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2014
DERIVATIVE FINANCIAL INSTRUMENTS	'
	Note 9 DERIVATIVE FINANCIAL INSTRUMENTS
	The Company uses derivative financial instruments, primarily forward contracts, to mitigate risk associated with adverse movements in foreign currency exchange rates.
	The Company records all derivatives in the condensed consolidated balance sheets at fair value with assets included in prepaid expenses and other current assets and liabilities included in accrued expenses and other current liabilities. The Company’s accounting treatment for these instruments is based on whether the instruments are designated as a hedging instrument or not designated as a hedging instrument. The effective portions of net investment hedges are recorded in other comprehensive income as a part of the cumulative translation adjustment. The effective portions of cash flow hedges are recorded in accumulated other comprehensive income until the hedged item is recognized in revenue on the condensed consolidated statements of income when the underlying hedged revenue is recognized. The ineffective portions of net investment hedges and cash flow hedges are recorded in other income, net on the Company’s condensed consolidated statements of income. For balance sheet hedges, changes in the fair value are recorded in other income, net on the Company’s condensed consolidated statements of income. For forecasted revenue hedges, changes in the fair value are recorded as a component of revenue in the Company’s condensed consolidated statements of income.
	The Company generally enters into master netting arrangements, which are designed to reduce credit risk by permitting net settlement of transactions with the same counterparty. The Company presents its derivative assets and liabilities at their gross fair values on the condensed consolidated balance sheets. The Company is not required to pledge, and is not entitled to receive, cash collateral related to these derivative transactions.
	Designated as Hedging Instruments
	Net Investment Hedges. The Company hedges, on an after-tax basis, a portion of its net investment in Yahoo Japan with forward contracts to reduce the risk that its investment in Yahoo Japan will be adversely affected by foreign currency exchange rate fluctuations. The total of the after-tax net investment hedge was less than the Yahoo Japan investment balance as of both December 31, 2013 and March 31, 2014. As such, the net investment hedge was considered to be effective. See Note 18—“Subsequent Events” for additional information.
	Cash Flow Hedges. The Company entered into foreign currency forward contracts designated as cash flow hedges of varying maturities through July 31, 2014. The cash flow hedges were considered to be effective as of December 31, 2013 and March 31, 2014. The Company expects all of the forward contracts designated as cash flow hedges to be reclassified to revenue within fiscal year 2014, as it expects to recognize the hedged forecasted revenue related to these contracts by December 31, 2014.
	Not Designated as Hedging Instruments
	Balance Sheet Hedges. The Company hedges certain of its net recognized foreign currency assets and liabilities with foreign exchange forward contracts to reduce the risk that its earnings and cash flows will be adversely affected by changes in foreign currency exchange rates. These derivative instruments hedge assets and liabilities, including intercompany transactions, which are denominated in foreign currencies.
	Forecasted Revenue Hedges. The Company hedges a portion of the forecasted revenue of certain international subsidiaries whose functional currencies are not the U.S dollar. This program attempts to reduce the risk that the Company’s revenue denominated in these currencies will be adversely affected by foreign currency exchange rate fluctuations.
	Notional amounts of the Company’s outstanding forward contracts as of December 31, 2013 and March 31, 2014 (in millions):
			December 31,				March 31,
			2013				2014
	Derivatives designated as hedging instruments:
	Net investment hedges		$	1,341			$	1,341
	Cash flow hedges		$	56			$	31
	Derivatives not designated as hedging instruments:
	Balance sheet hedges		$	393			$	335
	Forecasted revenue hedges		$	—			$	—
	Foreign currency forward contracts activity for the three months ended March 31, 2013 (in millions):
			Beginning				Settlement				Gain (Loss)			Gain (Loss)			Ending Fair
			Fair Value								Recorded in			Recorded in			Value
											Other Income,			Other
											Net			Comprehensive
														Income
	Derivatives designated as hedging instruments:
	Net investment hedges		$	3			$	—			$	—		$	270	*	$	273
	Derivatives not designated as hedging instruments:
	Balance sheet hedges			(5	)			(4	)			4			—			(5	)
	(*)	This amount does not reflect the tax impact of $101 million recorded during the three months ended March 31, 2013. The $169 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
	Foreign currency forward contracts activity for the three months ended March 31, 2014 (in millions):
			Beginning				Settlement				Gain (Loss)			Gain (Loss)			Gain			Ending Fair
			Fair Value								Recorded in			Recorded in			(Loss)			Value
											Other Income,			Other			Recorded
											Net			Comprehensive			in
														Income			Revenue
	Derivatives designated as hedging instruments:
	Net investment hedges		$	209			$	—			$	—		$	(22	)(1)	$	—		$	187
	Cash flow hedges			4				(1	)			(1	)		(2	)(2)		1			1
	Derivatives not designated as hedging instruments:
	Balance sheet hedges			—				(1	)			(1	)		—			—			(2	)
	Forecasted revenue hedges			—				—				—			—			—			—
	(1)	This amount does not reflect the tax impact of $8 million recorded during the three months ended March 31, 2014. The $14 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
	(2)	This amount does not reflect the tax impact of less than $1 million recorded during the three months ended March 31, 2014. The $1 million after tax impact of the loss was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
	Foreign currency forward contracts balance sheet location and ending fair value (in millions):
			Balance Sheet		December 31,				March 31,
			Location		2013				2014
	Derivatives designated as hedging instruments:
	Net investment hedges		Asset		$	209			$	187
			Liability		$	—			$	—
	Cash flow hedges		Asset		$	4			$	1
			Liability		$	—			$	—
	Derivatives not designated as hedging instruments:
	Balance sheet hedges		Asset		$	1			$	—
			Liability		$	(1	)		$	(2	)
	Forecasted revenue hedges		Asset		$	—			$	—
			Liability		$	—			$	—

CREDIT_AGREEMENT

CREDIT AGREEMENT	3 Months Ended
	Mar. 31, 2014
CREDIT AGREEMENT	'
	Note 10 CREDIT AGREEMENT
	The Company’s credit agreement (the “Credit Agreement”) with Citibank, N.A. terminates on October 9, 2014. The Credit Agreement, as amended, provides for a $750 million unsecured revolving credit facility, subject to increase of up to $250 million in accordance with its terms. As of March 31, 2014, the Company was in compliance with the financial covenants in the Credit Agreement and no amounts were outstanding.

CONVERTIBLE_NOTES

CONVERTIBLE NOTES	3 Months Ended
	Mar. 31, 2014
CONVERTIBLE NOTES	'
	Note 11 CONVERTIBLE NOTES
	0.00% Convertible Senior Notes
	As of March 31, 2014, the Company had $1.4 billion principal amount of Notes outstanding. The Notes are senior unsecured obligations of Yahoo, the Notes do not bear regular interest, and the principal amount of the Notes does not accrete. The Notes mature on December 1, 2018, unless previously purchased or converted in accordance with their terms prior to such date. The Company may not redeem Notes prior to maturity. However, holders of the Notes may convert them at certain times and upon the occurrence of certain events in the future, as outlined in the indenture governing the Notes (the “Indenture”). Holders of the Notes who convert in connection with a “make-whole fundamental change,” as defined in the Indenture, may require Yahoo to purchase for cash all or any portion of their Notes at a purchase price equal to 100 percent of the principal amount, plus accrued and unpaid special interest as defined in the Indenture, if any. The Notes are convertible, subject to certain conditions, into shares of Yahoo common stock at an initial conversion rate of 18.7161 shares per $1,000 principal amount of Notes (which is equivalent to an initial conversion price of approximately $53.43 per share), subject to adjustment upon the occurrence of certain events. Upon conversion of the Notes, holders will receive cash, shares of Yahoo’s common stock or a combination thereof, at Yahoo’s election. The Company’s intent is to settle the principal amount of the Notes in cash upon conversion. If the conversion value exceeds the principal amount, the Company would deliver shares of its common stock in respect to the remainder of its conversion obligation in excess of the aggregate principal amount (conversion spread). As of March 31, 2014, none of the conditions allowing holders of the Notes to convert had been met.
	The Notes consist of the following (in thousands):
			December 31,			March 31,
			2013			2014
	Liability component:
	Principal		$	1,437,500		$	1,437,500
	Less: note discount			(326,915	)		(312,249	)
	Net carrying amount		$	1,110,585		$	1,125,251
	Equity component (*)		$	305,569		$	305,569
	(*)	Recorded on the condensed consolidated balance sheets within additional paid-in capital.
	The following table sets forth total interest expense recognized related to the Notes (in thousands):
			Three Months			Three Months
			Ended			Ended
			March  31, 2013			March  31, 2014
	Accretion of convertible note discount		$	—		$	14,666
	The fair value of the Notes, which was determined based on inputs that are observable in the market (Level 2), and the carrying value of debt instruments (carrying value excludes the equity component of the Notes classified in equity) was as follows (in thousands):
			December 31, 2013						March 31, 2014
			Fair Value			Carrying Value			Fair Value		Carrying Value
	Convertible senior notes		$	1,111,473		$	1,110,585		$	1,127,393	$	1,125,251

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2014
COMMITMENTS AND CONTINGENCIES	'
	Note 12 COMMITMENTS AND CONTINGENCIES
	Lease Commitments. The Company leases office space and data centers under operating and capital lease agreements with original lease periods of up to 12 years which expire between 2014 and 2025.
	A summary of gross and net lease commitments as of March 31, 2014 was as follows (in millions):
		Gross Operating			Sublease			Net Operating
		Lease			Income			Lease
		Commitments						Commitments
	Nine months ending December 31, 2014	$	105		$	(9	)	$	96
	Years ending December 31,
	2015		113			(9	)		104
	2016		76			(2	)		74
	2017		62			—			62
	2018		39			—			39
	2019		27			—			27
	Due after 5 years		97			—			97
	Total gross and net lease commitments	$	519		$	(20	)	$	499
		Capital Lease
		Commitment
	Nine months ending December 31, 2014	$	11
	Years ending December 31,
	2015		12
	2016		9
	2017		9
	2018		9
	2019		4
	Due after 5 years		—
	Gross lease commitment	$	54
	Less: interest		(13	)
	Net lease commitment included in capital lease and other long-term liabilities	$	41
	Affiliate Commitments. The Company is obligated to make payments, which represent traffic acquisition costs (“TAC”), to its Affiliates. As of March 31, 2014, these commitments totaled $216 million, of which $10 million will be payable in the remainder of 2014, $205 million will be payable in 2015, and $1 million will be payable in 2016.
	Intellectual Property Rights. The Company is committed to make certain payments under various intellectual property arrangements of up to $23 million through 2023.
	Other Commitments. In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, joint ventures and business partners, purchasers of assets or subsidiaries and other parties with respect to certain matters, including, but not limited to, losses arising out of the Company’s breach of agreements or representations and warranties made by the Company, services to be provided by the Company, intellectual property infringement claims made by third parties or, with respect to the sale, lease, or assignment of assets or a subsidiary, matters related to the Company’s conduct of the business and tax matters prior to the sale. In addition, the Company has entered into indemnification agreements with its directors and certain of its officers that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. The Company has also agreed to indemnify certain former officers, directors, and employees of acquired companies in connection with the acquisition of such companies. The Company maintains director and officer insurance, which may cover certain liabilities arising from its obligation to indemnify its directors and officers, and former directors and officers of acquired companies, in certain circumstances. It is not possible to determine the aggregate maximum potential loss under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Such indemnification agreements might not be subject to maximum loss clauses. Historically, the Company has not incurred material costs as a result of obligations under these agreements and it has not accrued any liabilities related to such indemnification obligations in the Company’s condensed consolidated financial statements.
	As of March 31, 2014, the Company did not have any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. Accordingly, the Company is not exposed to any financing, liquidity, market, or credit risk that could arise if the Company had engaged in such relationships. In addition, the Company identified no variable interests currently held in entities for which it is the primary beneficiary.
	See Note 17 — “Search Agreement with Microsoft Corporation” for a description of the Company’s Search and Advertising Services and Sales Agreement (the “Search Agreement”) and License Agreement with Microsoft Corporation (“Microsoft”).
	Legal Contingencies
	Intellectual Property and General Matters. From time to time, third parties assert patent infringement claims against the Company. Currently, the Company is engaged in lawsuits regarding patent issues and has been notified of other potential patent disputes. In addition, from time to time, the Company is subject to other legal proceedings and claims in the ordinary course of business, including claims of alleged infringement of trademarks, copyrights, trade secrets, and other intellectual property rights, claims related to employment matters, and a variety of other claims, including claims alleging defamation, invasion of privacy, or similar claims arising in connection with the Company’s e-mail, message boards, photo and video sites, auction sites, shopping services, and other communications and community features.
	Stockholder and Securities Matters. Since May 31, 2011, several related stockholder derivative suits were filed in the Santa Clara County Superior Court (“California Derivative Litigation”) and the U.S. District Court for the Northern District of California (“Federal Derivative Litigation”) purportedly on behalf of the Company against certain officers and directors of the Company and third parties. The California Derivative Litigation was filed by plaintiffs Cinotto, Lassoff, Zucker, and Koo, and consolidated under the caption In re Yahoo! Inc. Derivative Shareholder Litigation on June 24, 2011 and September 12, 2011. The Federal Derivative Litigation was filed by plaintiffs Salzman, Tawila, and Iron Workers Mid-South Pension Fund and consolidated under the caption In re Yahoo! Inc. Shareholder Derivative Litigation on October 3, 2011. The plaintiffs allege breaches of fiduciary duties, corporate waste, mismanagement, abuse of control, unjust enrichment, misappropriation of corporate assets, or contribution and seek damages, equitable relief, disgorgement and corporate governance changes in connection with Alibaba Group’s restructuring of its subsidiary Alipay.com Co., Ltd. (“Alipay”) and related disclosures. On June 7, 2012, the courts approved stipulations staying the California Derivative Litigation pending resolution of the Federal Derivative Litigation, and deferring the Federal Derivative Litigation pending a ruling on the motion to dismiss filed by the defendants in the related stockholder class actions, which are discussed below. On December 16, 2013, the U.S. District Court for the Northern District of California granted the Company’s motion to stay the Federal Derivative Litigation pending resolution of the appeal filed by the plaintiffs in the related stockholder class actions.
	Since June 6, 2011, two purported stockholder class actions were filed in the U.S. District Court for the Northern District of California against the Company and certain officers and directors of the Company by plaintiffs Bonato and the Twin Cities Pipe Trades Pension Trust. In October 2011, the District Court consolidated the two actions under the caption In re Yahoo! Inc. Securities Litigation and appointed the Pension Trust Fund for Operating Engineers as lead plaintiff. In a consolidated amended complaint filed December 15, 2011, the lead plaintiff purports to represent a class of investors who purchased the Company’s common stock between April 19, 2011 and July 29, 2011, and alleges that during that class period, defendants issued statements that were materially false or misleading because they did not disclose information relating to Alibaba Group’s restructuring of Alipay. The complaint purports to assert claims for relief for violation of Section 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, and for violation of Rule 10b-5 thereunder, and seeks unspecified damages, injunctive and equitable relief, fees, and costs. On August 10, 2012, the court granted defendants’ motion to dismiss the consolidated amended complaint. Plaintiffs have appealed.
	On July 30, 2013, a stockholder derivative action captioned Zucker v. Loeb, et al. was filed in the Supreme Court of New York for the County of New York against current and former members of the Company’s board of directors (the “Board”), Third Point LLC, and entities related to Third Point LLC. The complaint filed by the plaintiff asserts claims for alleged breach of fiduciary duty, waste, and unjust enrichment in connection with the Company’s repurchase of 40 million shares of Company common stock beneficially owned by Third Point LLC. The complaint seeks a judgment declaring that the defendants breached their fiduciary duties, an award of restitution, and corporate governance changes. The Company has filed a motion to dismiss the action.
	On March 14, 2014, a shareholder derivative action captioned Hughes Trust v. de Castro, et al. was filed in the Delaware Court of Chancery purportedly on behalf of Yahoo against current and former members of the Board and our former chief operating officer, Henrique de Castro. The plaintiff alleges that the directors who approved Mr. de Castro’s employment agreement in 2012 wasted corporate assets and breached their fiduciary duties by failing to adequately inform themselves about how much compensation Mr. de Castro would be entitled to receive. The plaintiff further alleges that the directors failed to provide adequate disclosure regarding Mr. de Castro’s compensation. The plaintiff asserts a claim against Mr. de Castro for unjust enrichment. Plaintiff seeks unspecified damages and restitution in favor of Yahoo, an order directing Yahoo to reform its corporate governance and internal procedures, and attorneys’ fees and costs. The Company intends to file a motion to dismiss the action.
	Mexico Matter. On November 16, 2011, plaintiffs Worldwide Directories, S.A. de C.V. (“WWD”), and Ideas Interactivas, S.A. de C.V. (“Ideas”) filed an action in the 49th Civil Court of Mexico against the Company, Yahoo! de Mexico, S.A. de C.V. (“Yahoo! Mexico”), Yahoo International Subsidiary Holdings, Inc., and Yahoo Hispanic Americas LLC. The complaint alleged claims of breach of contract, breach of promise, and lost profits in connection with various commercial contracts entered into among the parties between 2002 and 2004, relating to a business listings service, and alleged total damages of approximately $2.75 billion. On December 7, 2011, Yahoo! Mexico filed a counterclaim against WWD for payments of approximately $2.6 million owed to Yahoo! Mexico for services rendered. On April 10, 2012, plaintiffs withdrew their claim filed against Yahoo International Subsidiary Holdings, Inc. and Yahoo Hispanic Americas LLC.
	On November 28, 2012, the 49th Civil Court of Mexico entered a non-final judgment against the Company and Yahoo! Mexico in the amount of USD $2.75 billion and a non-final judgment in favor of Yahoo! Mexico on its counterclaim against WWD in the amount of $2.6 million. The judgment against the Company and Yahoo! Mexico purported to leave open for determination in future proceedings certain other alleged damages that were not quantified in the judgment. The judgment was issued by a law clerk to the trial court judge who presided over the entire case during the trial court proceedings but stepped down from his position shortly before the judgment was entered.
	On December 12, 2012 and December 13, 2012, respectively, Yahoo! Mexico and the Company appealed the judgment to a three-magistrate panel of the Superior Court of Justice for the Federal District (the “Superior Court”). On May 15, 2013, the Superior Court reversed the judgment, overturned all monetary awards against the Company and reduced the monetary award against Yahoo! Mexico to $172,500. The Superior Court affirmed the award of $2.6 million in favor of Yahoo! Mexico on its counterclaim.
	Plaintiffs have appealed the Superior Court’s decision to the Mexican Federal Civil Collegiate Court for the First Circuit (“Civil Collegiate Court”). The Company has appealed the Superior Court’s decision not to award it statutory costs in the underlying proceeding. Yahoo! Mexico has appealed the Superior Court’s award of $172,500, the Superior Court’s decision not to award it additional moneys beyond the $2.6 million award on its counterclaims, and the Superior Court’s decision not to award it statutory costs. In the pending appeals, review is limited to whether the Superior Court’s decision is unconstitutional, unlawful, or both.
	The Company believes the plaintiffs’ claims are without legal or factual merit. First, the plaintiffs’ claims are based on agreements that were either terminated by agreement with releases or had expired or terminated in accordance with their terms, a non-binding letter of intent pursuant to which no definitive agreements were ever entered into by the parties, and correspondence that did not constitute agreements. Second, the loss of profits of the type claimed by plaintiffs are not awardable under Mexico law because they were not a direct and immediate consequence of a breach of contract. Of the $2.75 billion in total damages alleged by plaintiffs, more than $2.4 billion were for loss of profits. Third, the plaintiffs’ alleged damages and loss of profits were further precluded by the agreements at issue through, among other things, contractual and legal limitations of liability. Fourth, the plaintiffs’ pleadings in the complaint, as well as documentary evidence filed by the plaintiffs in support of their allegations, were generally deficient to support or establish plaintiffs’ claims. Fifth, the decision failed to consider substantially all of the defenses asserted by the Company and Yahoo! Mexico. Finally, the Company believes that the law clerk who entered the judgment lacked the requisite authority to issue the judgment.
	The Company has not recorded an accrual for the judgment, which was reversed, as explained above. The Company cannot assure the ultimate outcome of the pending or further appeals.
	The Company has determined, based on current knowledge, that the amount or range of reasonably possible losses, including reasonably possible losses in excess of amounts already accrued, is not reasonably estimable with respect to certain matters described above. The Company has also determined, based on current knowledge, that the aggregate amount or range of losses that are estimable with respect to the Company’s legal proceedings, including the matters described above other than the Mexico matter, would not have a material adverse effect on the Company’s consolidated financial position, results of operations or cash flows. Amounts accrued as of December 31, 2013 and March 31, 2014 were not material. The ultimate outcome of legal proceedings involves judgments, estimates and inherent uncertainties, and cannot be predicted with certainty. In the event of a determination adverse to Yahoo, its subsidiaries, directors, or officers in these matters, the Company may incur substantial monetary liability, and be required to change its business practices. Either of these events could have a material adverse effect on the Company’s financial position, results of operations, or cash flows. The Company may also incur substantial legal fees, which are expensed as incurred, in defending against these claims.

STOCKHOLDERS_EQUITY_AND_EMPLOY

STOCKHOLDERS' EQUITY AND EMPLOYEE BENEFITS	3 Months Ended
	Mar. 31, 2014
STOCKHOLDERS' EQUITY AND EMPLOYEE BENEFITS	'
	Note 13 STOCKHOLDERS’ EQUITY AND EMPLOYEE BENEFITS
	Employee Stock Purchase Plan. As of March 31, 2014, there was $1 million of unamortized stock-based compensation expense related to the Company’s Employee Stock Purchase Plan, which will be recognized over a weighted average period of 0.1 years.
	Stock Options. The Company’s 1995 Stock Plan, the Directors’ Plan, and stock-based awards assumed through acquisitions (including stock-based commitments related to continued service of acquired employees, such as the holdback by Yahoo of shares of Yahoo common stock issued to Tumblr’s founder in connection with the Company’s acquisition of Tumblr in June 2013) are collectively referred to as the “Plans.” Stock option activity under the Company’s Plans for the three months ended March 31, 2014 is summarized as follows (in thousands, except per share amounts):
			Shares			Weighted Average
						Exercise Price Per
						Share
	Outstanding at December 31, 2013			20,968		$	20.43
	Options granted			10		$	35.9
	Options assumed in acquisitions			—		$	—
	Options exercised(*)			(2,478	)	$	38.43
	Options expired			(651	)	$	20.01
	Options cancelled/forfeited			(1,967	)	$	18.67
	Outstanding at March 31, 2014			15,882		$	17.87
	(*)	The Company issued new shares to satisfy stock option exercises.
	As of March 31, 2014, there was $36 million of unamortized stock-based compensation expense related to unvested stock options, which is expected to be recognized over a weighted average period of 1.0 year.
	The fair value of option grants is determined using the Black-Scholes option pricing model with the following weighted average assumptions:
			Stock Options						Purchase Plan(*)
			Three Months Ended						Three Months Ended
			March 31,			March 31,			March 31,			March 31,
			2013			2014			2013			2014
	Expected dividend yield			0	%		0	%		0	%		0	%
	Risk-free interest rate			0.6	%		1.5	%		0.1	%		0.1	%
	Expected volatility			30.9	%		36.2	%		29.5	%		38.7	%
	Expected life (in years)			4			4			0.24			0.24
	(*)	Assumptions for the Employee Stock Purchase Plan relate to the annual average of the enrollment periods. Enrollment is permitted in February, May, August, and November of each year.
	Restricted Stock and Restricted Stock Units. Restricted stock and restricted stock unit activity under the Plans for the three months ended March 31, 2014 is summarized as follows (in thousands, except per share amounts):
			Shares			Weighted Average
						Grant Date
						Fair Value
						Per Share
	Awarded and unvested at December 31, 2013(*)			49,584		$	24.2
	Granted(*)			7,332		$	38.72
	Assumed in acquisitions			277		$	40.85
	Vested			(8,512	)	$	18.83
	Forfeited			(2,144	)	$	20.63
	Awarded and unvested at March 31, 2014(*)			46,537		$	27.73
	(*)	Includes the maximum number of shares issuable under the Company’s performance-based restricted stock unit awards (including future-year tranches for which goals have not been set).
	As of March 31, 2014, there was $750 million of unamortized stock-based compensation expense related to unvested restricted stock awards and restricted stock units, which is expected to be recognized over a weighted average period of 2.8 years.
	During the three months ended March 31, 2013 and 2014, 5.6 million shares and 8.5 million shares, respectively, that were subject to previously granted restricted stock awards and restricted stock units vested. These vested restricted stock awards and restricted stock units were net share settled. During the three months ended March 31, 2013 and 2014, the Company withheld 2.1 million shares and 3.3 million shares, respectively, based upon the Company’s closing stock price on the vesting date to settle the employees’ minimum statutory obligation for the applicable income and other employment taxes. The Company then remitted cash to the appropriate taxing authorities.
	Total payments for the employees’ tax obligations to the relevant taxing authorities were $44 million and $125 million, respectively, for the three months ended March 31, 2013 and 2014 and are reflected as a financing activity within the condensed consolidated statements of cash flows. The payments were used for tax withholdings related to the net share settlements of restricted stock units and tax withholding related to the reacquisition of shares of restricted stock. The payments had the effect of share repurchases by the Company as they reduced the number of shares that would have otherwise been issued on the vesting date and were recorded as a reduction of additional paid-in capital.
	Performance-Based Executive Incentive Equity Awards.
	Performance Options. The financial performance stock options awarded by the Company in November 2012 to Ms. Mayer and Mr. Goldman include multiple performance periods. The number of stock options that ultimately vest for each performance period will range from 0 percent to 100 percent of the target amount for such period stated in each executive’s award agreement based on the Company’s performance relative to goals. The financial performance goals are established at the beginning of each performance period and the portion (or “tranche”) of the award related to each performance period is treated as a separate grant for accounting purposes. In February 2014, the Compensation and Leadership Development Committee of the Board (the “Compensation Committee”) established performance goals under these stock options for the 2014 performance year. The 2014 financial performance metrics (and their weightings) under the performance options are GAAP revenue (70 percent) and Adjusted EBITDA (30 percent). The grant date fair value of the 2014 tranche of the November 2012 financial performance stock options was $38 million, and is being recognized over the twelve month service period. The Company began recording stock-based compensation expense for this tranche in February 2014, when the financial performance goals were established.
	Performance RSUs. In February 2014, the Compensation Committee approved additional annual financial performance-based restricted stock unit (“RSU”) awards to Ms. Mayer and other senior officers, and established the 2014 annual performance goals for these awards as well as for the similar performance-based RSUs granted in February 2013. The 2013 and 2014 performance-based RSU awards are generally eligible to vest in equal annual tranches over four years (three years for Ms. Mayer) based on the Company’s attainment of annual financial performance goals as well as the executive’s continued employment through each vesting date. The number of shares that ultimately vest each year will range from 0 percent to 200 percent of the annual target amount, based on the Company’s performance. Annual financial performance metrics and goals are established for these awards at the beginning of each year and the tranche of each award related to that year’s performance goal is treated as a separate annual grant for accounting purposes. The 2014 financial performance metrics (and their weightings) established for the performance RSUs are: GAAP revenue (70 percent) and adjusted EBITDA (30 percent). The grant date fair value of the first tranche of the February 2014 performance RSUs was $9 million, and the grant date fair value of the second tranche of the February 2013 performance RSUs was $17 million. These values are being recognized over the tranches’ twelve-month service periods. The Company began recording stock-based compensation expense for these tranches in February 2014, when the financial performance goals were established.
	Stock Repurchases. In May 2012, the Board authorized a stock repurchase program allowing the Company to repurchase up to $5 billion of its outstanding shares of common stock from time to time. That repurchase program, which by its terms would have expired in June 2015, was exhausted during the first quarter of 2014. In November 2013, the Board authorized an additional stock repurchase program with an authorized level of $5 billion. The November 2013 program, according to its terms, will expire in December 2016. The aggregate amount available under the November 2013 repurchase program was approximately $4.6 billion at March 31, 2014. Repurchases under the repurchase programs may take place in the open market or in privately negotiated transactions, including structured and derivative transactions such as accelerated share repurchase transactions, and may be made under a Rule 10b5-1 plan. During the three months ended March 31, 2014, the Company repurchased approximately 12 million shares of its common stock under its stock repurchase programs at an average price of $37.65 per share for a total of $450 million.

RESTRUCTURING_REVERSALS_CHARGE

RESTRUCTURING (REVERSALS) CHARGES, NET	3 Months Ended
	Mar. 31, 2014
RESTRUCTURING (REVERSALS) CHARGES, NET	'
	Note 14 RESTRUCTURING (REVERSALS) CHARGES, NET
	Restructuring (reversals) charges, net was comprised of the following (in thousands):
		Three Months Ended March 31, 2013
		Restructuring			Q2’12			Q4’12			Total
		Plans Prior			Restructuring			Korea
		to			Plan			Business
		2012						Closure
	Employee severance pay and related costs	$	(3	)	$	(10,265	)	$	(103	)	$	(10,371	)
	Non-cancelable lease, contract terminations, and other charges		2,811			65			(114	)		2,762
	Other non-cash charges, net		—			—			547			547
	Restructuring (reversals) charges, net	$	2,808		$	(10,200	)	$	330		$	(7,062	)
		Three Months Ended March 31, 2014
		Restructuring			Q2’12			Q4’12 Korea			Q4’13			Q1’14			Total
		Plans Prior			Restructuring			Business Closure			Restructuring			Restructuring
		to			Plan						Plan			Plan
		2012
	Employee severance pay and related costs (reversals)	$	—		$	(94	)	$	—		$	98		$	3,212		$	3,216
	Non-cancelable lease, contract terminations, and other charges		6,438			35			(202	)		—			—			6,271
	Restructuring (reversals) charges, net	$	6,438		$	(59	)	$	(202	)	$	98		$	3,212		$	9,487
	Although the Company does not allocate restructuring charges to its segments, the amounts of the restructuring charges relating to each segment are presented below.
	Restructuring Plans Prior to 2012. Prior to 2012, the Company implemented workforce reductions, a strategic realignment, and consolidation of certain real estate facilities and data centers to reduce its cost structure, align resources with its product strategy and improve efficiency. During the three months ended March 31, 2013, the Company recorded net pre-tax cash charges of $3 million in severance, facility and other related costs, the majority of which related to the Americas segment. During the three months ended March 31, 2014, the Company recorded net pre-tax charges of $6 million in facility and other related costs, consisting of $5 million related to the Americas segment and $1 million related to the EMEA segment.
	Q2’12 Restructuring Plan. During the second quarter of 2012, the Company began implementing the Q2’12 Restructuring Plan to reduce its worldwide workforce by approximately 2,000 employees and to consolidate certain real estate and data center facilities. During the three months ended March 31, 2013, the Company recorded total pre-tax cash charges of $6 million in severance and facility related costs. The total pre-tax cash charges were offset by a credit of $16 million for severance-related costs due to changes to original estimates and redeployments and voluntary resignations of employees prior to their planned severance dates. Of the $10 million credit in restructuring charges, net, recorded in the three months ended March 31, 2013, $6 million related to the Americas segment and $4 million related to the EMEA segment. During the three months ended March 31, 2014, the Company recorded immaterial net reversals for adjustments to original estimates in severance and facility related costs, the majority of which related to the Americas segment.
	Q4’12 Korea Business Closure. During the fourth quarter of 2012, the Company decided to close its Korea business by the end of 2012 to streamline its operations and focus its resources. During the three months ended March 31, 2013, the Company recorded net pre-tax charges of less than $1 million in severance, facility and contract termination costs related to the Asia Pacific segment. During the three months ended March 31, 2014, the Company recorded immaterial reversals for adjustments to original estimates of contract termination costs related to the Asia Pacific segment.
	Q4’13 Restructuring Plan. During the fourth quarter of 2013, the Company started the process of closing its Cairo, Egypt and Rolle, Switzerland offices as part of its continued efforts to streamline its operations and focus its resources. During the three months ended March 31, 2014, the Company recorded immaterial pre-tax cash charges in severance and other related costs, which all related to the EMEA segment.
	Q1’14 Restructuring Plan. During the first quarter of 2014, the Company implemented a strategic plan to align resources with its product strategy and improve efficiency. During the three months ended March 31, 2014, the Company recorded total pre-tax cash charges of $3 million in severance and other related costs, which all related to the EMEA segment.
	Restructuring Accruals. The $29 million restructuring liability as of March 31, 2014 consisted of $4 million for employee severance pay expenses, which the Company expects to pay out by the end of the third quarter of 2014, and $25 million relating to non-cancelable lease costs, which the Company expects to pay over the terms of the related obligations which extend to the fourth quarter of 2021.
	The Company’s restructuring accrual activity for the three months ended March 31, 2014 is summarized as follows (in thousands):
		Restructuring			Q2’12			Q4’12			Q4’13			Q1’14			Total
		Plans Prior			Restructuring			Korea Business			Restructuring			Restructuring
		to			Plan			Closure			Plan			Plan
		2012
	Balance as of January 1, 2014	$	22,349		$	2,765		$	337		$	4,645		$	—		$	30,096
	Employee severance pay and related costs		—			28			—			351			3,212			3,591
	Non-cancelable lease, contract termination, and other charges		6,496			35			1			—			—			6,532
	Changes in estimates and reversals of previous charges		(58	)		(122	)		(203	)		(253	)		—			(636	)
	Restructuring (reversals) charges, net for the three months ended March 31, 2014	$	6,438		$	(59	)	$	(202	)	$	98		$	3,212		$	9,487
	Cash paid		(5,120	)		(378	)		(135	)		(2,171	)		(2,538	)		(10,342	)
	Foreign currency		18			11			—			(17	)		3			15
	Balance as of March 31, 2014	$	23,685		$	2,339		$	—		$	2,555		$	677		$	29,256
	Restructuring accruals by segment consisted of the following (in thousands):
		December 31,			March 31,
		2013			2014
	Americas	$	18,078		$	20,170
	EMEA		11,284			8,666
	Asia Pacific		734			420
	Total restructuring accruals	$	30,096		$	29,256

INCOME_TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2014
INCOME TAXES	'
	Note 15 INCOME TAXES
	The Company’s effective tax rate is the result of the mix of income earned in various tax jurisdictions that apply a broad range of income tax rates. Historically, the Company’s provision for income taxes has differed from the tax computed at the U.S. federal statutory income tax rate due to state taxes, the effect of non-U.S. operations, non-deductible stock-based compensation expense and adjustments to unrecognized tax benefits.
	The effective tax rate reported for the three months ended March 31, 2014 was 25 percent compared to 15 percent for the same period in 2013. The rates in both periods were lower than the U.S. federal statutory rate primarily due to the reductions of tax reserves that were recorded based on new information received during interactions with the tax authorities. The income tax expense reported for the three months ended March 31, 2014 does not include any benefit from the federal research and development tax credit as that provision expired on December 31, 2013.
	As of March 31, 2014, the Company does not anticipate repatriating its undistributed foreign earnings of approximately $2.8 billion. Those earnings are principally related to its equity method investment in Yahoo Japan. If those earnings were to be repatriated in the future, the Company may be subject to additional U.S. income taxes (subject to an adjustment for foreign tax credits). It is not practicable to determine the income tax liability that might be incurred if these earnings were to be repatriated.
	The Company is in various stages of examination and appeal in connection with its taxes both in the U.S. and in foreign jurisdictions. Those audits generally span tax years 2005 through 2012. The IRS Appeals division is currently finalizing the Company’s protest of the 2007 and 2008 audit results, while the 2009 and 2010 U.S. federal income tax returns are currently under examination. The Company has protested the proposed California Franchise Tax Board’s adjustments to the 2005 and 2006 returns, but no conclusions have been reached to date. The 2007 and 2008 California tax returns are currently under examination.
	The Company’s gross amount of unrecognized tax benefits as of March 31, 2014 was $691 million, of which $603 million is recorded on the condensed consolidated balance sheets. The gross unrecognized tax benefits as of March 31, 2014 decreased by $4 million from the recorded balance as of December 31, 2013. It is difficult to determine when the examinations will be settled or what their final outcome will be. The Company believes, however, that it has adequately provided for any reasonably foreseeable adjustment and that any settlement will not have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows.
	The Company may have additional tax liabilities in China related to the sale to Alibaba Group of 523 million of Alibaba Group Shares that took place during the year ended December 31, 2012. Any taxes assessed and paid in China are expected to be ultimately offset and recovered in the U.S.
	During the year ended December 31, 2012, tax authorities from the Brazilian State of Sao Paulo assessed certain indirect taxes against the Company’s Brazilian subsidiary, Yahoo! do Brasil Internet Ltda., related to online advertising services. The assessment totaling approximately $85 million is for calendar years 2008 and 2009. The Company currently believes the assessment is without merit. The Company believes the risk of loss is remote and has not recorded an accrual for the assessment.

SEGMENTS

SEGMENTS	3 Months Ended
	Mar. 31, 2014
SEGMENTS	'
	Note 16 SEGMENTS
	The Company continues to manage its business geographically. The primary areas of measurement and decision-making are Americas, EMEA (Europe, Middle East, and Africa), and Asia Pacific. Management relies on an internal reporting process that provides revenue ex-TAC, which is defined as revenue less TAC, direct costs excluding TAC by segment, and consolidated income from operations for making decisions related to the evaluation of the financial performance of, and allocating resources to, the Company’s segments.
	The following tables present summarized information by segment (in thousands):
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Revenue by segment:
	Americas		$	842,195		$	866,928
	EMEA			94,824			91,570
	Asia Pacific			203,349			174,232
	Total Revenue		$	1,140,368		$	1,132,730
	TAC by segment:
	Americas		$	37,522		$	34,094
	EMEA			11,536			9,193
	Asia Pacific			17,010			2,622
	Total TAC		$	66,068		$	45,909
	Revenue ex-TAC by segment:
	Americas		$	804,673		$	832,834
	EMEA			83,288			82,377
	Asia Pacific			186,339			171,610
	Total Revenue ex-TAC			1,074,300			1,086,821
	Direct costs by segment(1) :
	Americas			176,393			177,355
	EMEA			38,545			39,726
	Asia Pacific			54,954			44,314
	Global operating costs(2)(3)			418,803			519,045
	Depreciation and amortization			162,092			157,534
	Stock-based compensation expense			44,605			109,181
	Restructuring (reversals) charges, net			(7,062	)		9,487
	Income from operations		$	185,970		$	30,179
	(1)	Direct costs for each segment include cost of revenue—other as well as other operating expenses that are directly attributable to the segment such as employee compensation expense (excluding stock-based compensation expense), local sales and marketing expenses, and facilities expenses.
	(2)	Global operating costs include product development, service engineering and operations, general and administrative, and other corporate expenses that are managed on a global basis and that are not directly attributable to any segment.
	(3)	The net cost reimbursements from Microsoft pursuant to the Search Agreement are primarily included in global operating costs.
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Capital expenditures, net:
	Americas		$	65,416		$	63,977
	EMEA			2,907			15,762
	Asia Pacific			1,258			4,916
	Total capital expenditures, net		$	69,581		$	84,655
			December 31,			March 31,
			2013			2014
	Property and equipment, net:
	Americas:
	U.S.		$	1,346,889		$	1,336,609
	Other			1,183			1,003
	Total Americas		$	1,348,072		$	1,337,612
	EMEA			44,976			53,654
	Asia Pacific			95,470			88,140
	Total property and equipment, net		$	1,488,518		$	1,479,406
	See Note 14 —“Restructuring (Reversals) Charges, Net” for additional information regarding segments.
	Enterprise Wide Disclosures:
	The following table presents revenue for groups of similar services (in thousands):
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Display		$	455,071		$	453,224
	Search			424,687			444,767
	Other			260,610			234,739
	Total revenue		$	1,140,368		$	1,132,730
			Three Months Ended
			March 31,			March 31,
2013			2014
Revenue:
U.S.		$	804,753		$	833,658
International			335,615			299,072
Total revenue		$	1,140,368		$	1,132,730
Revenue is attributed to individual countries according to the online property that generated the revenue. No single foreign country was material to revenue for the three months ended March 31, 2013 and 2014.

SEARCH_AGREEMENT_WITH_MICROSOF

SEARCH AGREEMENT WITH MICROSOFT CORPORATION	3 Months Ended
	Mar. 31, 2014
SEARCH AGREEMENT WITH MICROSOFT CORPORATION	'
	Note 17 SEARCH AGREEMENT WITH MICROSOFT CORPORATION
	By the end of 2013, the Company had substantially completed the transition of paid search to the Microsoft platform. In the transitioned markets, the Company reports as revenue the 88 percent revenue share it receives from Microsoft under the Search Agreement as the Company is not the primary obligor in the arrangement with the advertisers and publishers. The underlying search advertising services are provided by Microsoft. Approximately 30 percent and 36 percent of the Company’s revenue for the three months ended March 31, 2013 and 2014, respectively, was attributable to the Search Agreement.
	Under the Search Agreement Microsoft continues to be obligated to guarantee Yahoo’s revenue per search (“RPS Guarantee”) on Yahoo Properties in Taiwan and Hong Kong for 18 months after the transition of paid search services to Microsoft’s platform in those markets, which was completed during the fourth quarter of 2013. In all other markets, Microsoft’s obligation to pay an RPS Guarantee or fixed quarterly payments in lieu of the RPS Guarantee terminated on or prior to March 31, 2014.
	The Company’s results for the three months ended March 31, 2013 and 2014 reflect $13 million and less than $1 million, respectively, in search operating cost reimbursements from Microsoft under the Search Agreement. As of December 31, 2013 and March 31, 2014, the Company had collected total amounts of $21 million and $18 million, respectively, on behalf of Microsoft and Affiliates, which was included in cash and cash equivalents with a corresponding liability in accrued expenses and other current liabilities. The Company’s uncollected 88 percent share in connection with the Search Agreement was $305 million and $294 million, which is included in accounts receivable, net, as of December 31, 2013 and March 31, 2014, respectively. The total reimbursements not yet received from Microsoft of $5 million were classified as part of prepaid expenses and other current assets on the Company’s condensed consolidated balance sheets as of December 31, 2013. There were no amounts classified as a part of prepaid expenses and other current assets on our condensed consolidated balance sheet as of March 31, 2014 related to reimbursements not yet received from Microsoft.

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	3 Months Ended
	Mar. 31, 2014
SUBSEQUENT EVENTS	'
	Note 18 SUBSEQUENT EVENTS
	Stock Repurchase Transactions. From April 1, 2014 through May 8, 2014, the Company repurchased approximately 9 million shares of its common stock at an average price of $35.45 per share, for a total of $325 million.
	Net Investment Hedge. The Company also entered into new forward and option contracts with notional values of approximately $1.7 billion, with maturities ranging from six months to two years.

THE_COMPANY_AND_SUMMARY_OF_SIG1

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2014
Basis of Presentation	'
	Basis of Presentation. The condensed consolidated financial statements include the accounts of Yahoo! Inc. and its majority-owned or otherwise controlled subsidiaries. All significant intercompany accounts and transactions have been eliminated. Investments in entities in which the Company can exercise significant influence, but does not own a majority equity interest or otherwise control, are accounted for using the equity method and are included as investments in equity interests on the condensed consolidated balance sheets. The Company has included the results of operations of acquired companies from the date of the acquisition. Certain prior period amounts have been reclassified to conform to the current period presentation.
	The accompanying unaudited condensed consolidated interim financial statements reflect all adjustments, consisting of only normal recurring items, which, in the opinion of management, are necessary for a fair statement of the results of operations for the periods shown. The results of operations for such periods are not necessarily indicative of the results expected for the full year or for any future periods.
	The preparation of consolidated financial statements in conformity with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”) requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets, liabilities, revenue, and expenses and the related disclosure of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to revenue, the useful lives of long-lived assets including property and equipment and intangible assets, investment fair values, stock-based compensation, goodwill, income taxes, contingencies, and restructuring charges. The Company bases its estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results may differ from these estimates.
	These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The condensed consolidated balance sheet as of December 31, 2013 was derived from the Company’s audited financial statements for the year ended December 31, 2013, but does not include all disclosures required by U.S. GAAP. However, the Company believes the disclosures are adequate to make the information presented not misleading.

INVESTMENTS_AND_FAIR_VALUE_MEA1

INVESTMENTS AND FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 31, 2014
Schedule of Investments in Available for Sale Securities	'
	The following tables summarize the investments in available-for-sale securities (in thousands):
			December 31, 2013
			Gross		Gross			Gross			Estimated
			Amortized		Unrealized			Unrealized			Fair Value
			Costs		Gains			Losses
	Government and agency securities		$	538,397	$	65		$	(101	)	$	538,361
	Corporate debt securities, commercial paper, and bank certificates of deposit			2,380,134		2,525			(1,216	)		2,381,443
	Corporate equity securities			230		153			—			383
	Total investments in available-for-sale securities		$	2,918,761	$	2,743		$	(1,317	)	$	2,920,187
			March 31, 2014
			Gross		Gross			Gross			Estimated
			Amortized		Unrealized			Unrealized			Fair Value
			Costs		Gains			Losses
	Government and agency securities		$	566,470	$	335		$	(188	)	$	566,617
	Corporate debt securities, commercial paper, and bank certificates of deposit			2,805,485		2,512			(1,301	)		2,806,696
	Corporate equity securities			230		249			—			479
	Total investments in available-for-sale securities		$	3,372,185	$	3,096		$	(1,489	)	$	3,373,792
Schedule of Available for Sale Securities by Balance Sheet Location	'
			December 31,		March 31,
			2013		2014
	Reported as:
	Short-term marketable securities		$	1,330,304	$	1,741,494
	Long-term marketable securities			1,589,500		1,631,819
	Other assets			383		479
	Total		$	2,920,187	$	3,373,792
Schedule of Available for Sale Securities by Contractual Maturities	'
	The contractual maturities of available-for-sale marketable securities were as follows (in thousands):
			December 31,		March 31,
			2013		2014
	Due within one year		$	1,330,304	$	1,741,494
	Due after one year through five years			1,589,500		1,631,819
	Total available-for-sale marketable securities		$	2,919,804	$	3,373,313
Investments in Unrealized Loss Position	'
	The following tables show all investments in an unrealized loss position for which an other-than-temporary impairment has not been recognized and the related gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
			December 31, 2013
			Less than 12 Months					12 Months or Longer						Total
			Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Loss			Value			Loss			Value		Loss
	Government and agency securities		$	263,514	$	(101	)	$	—		$	—		$	263,514	$	(101	)
	Corporate debt securities, commercial paper, and bank certificates of deposit			696,950		(1,214	)		3,833			(2	)		700,783		(1,216	)
	Total investments in available-for-sale securities		$	960,464	$	(1,315	)	$	3,833		$	(2	)	$	964,297	$	(1,317	)
			March 31, 2014
			Less than 12 Months					12 Months or Longer						Total
			Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Loss			Value			Loss			Value		Loss
	Government and agency securities		$	138,841	$	(181	)	$	18,762		$	(7	)	$	157,603	$	(188	)
	Corporate debt securities, commercial paper, and bank certificates of deposit			852,227		(1,141	)		37,090			(160	)		889,317		(1,301	)
	Total investments in available-for-sale securities		$	991,068	$	(1,322	)	$	55,852		$	(167	)	$	1,046,920	$	(1,489	)
Schedule of Fair Value of Financial Assets Measured on Recurring Basis	'
	The following table sets forth the financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of December 31, 2013 (in thousands):
			Fair Value Measurements at Reporting Date Using
	Assets		Level 1		Level 2			Total
	Money market funds(1)		$	936,438	$	—		$	936,438
	Available-for-sale securities:
	Government and agency securities(1)			—		876,197			876,197
	Commercial paper and bank certificates of deposit(1)			—		472,080			472,080
	Corporate debt securities(1)			—		2,059,159			2,059,159
	Time deposits(1)			—		84,443			84,443
	Corporate equity securities(2)			370		—			370
	Foreign currency derivative contracts(3)			—		214,041			214,041
	Financial assets at fair value		$	936,808	$	3,705,920		$	4,642,728
	Liabilities
	Foreign currency derivative contracts(3)			—		(1,401	)		(1,401	)
	Total financial assets and liabilities at fair value		$	936,808	$	3,704,519		$	4,641,327
	The following table sets forth the financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of March 31, 2014 (in thousands):
			Fair Value Measurements at Reporting Date Using
	Assets		Level 1		Level 2			Total
	Money market funds(1)		$	392,140	$	—		$	392,140
	Available-for-sale securities:
	Government and agency securities(1)			—		608,619			608,619
	Commercial paper and bank certificates of deposit(1)			—		416,835			416,835
	Corporate debt securities(1)			—		2,392,063			2,392,063
	Time deposits(1)			—		96,711			96,711
	Corporate equity securities(2)			479		—			479
	Foreign currency derivative contracts(3)			—		187,775			187,775
	Financial assets at fair value		$	392,619	$	3,702,003		$	4,094,622
	Liabilities
	Foreign currency derivative contracts(3)			—		(1,973	)		(1,973	)
	Total financial assets and liabilities at fair value		$	392,619	$	3,700,030		$	4,092,649
	(1)	The money market funds, government and agency securities, commercial paper and bank certificates of deposit, corporate debt securities, and time deposits are classified as part of either cash and cash equivalents or investments in marketable securities in the condensed consolidated balance sheets.
	(2)	The corporate equity securities are classified as part of other long-term assets in the condensed consolidated balance sheets.
	(3)	Foreign currency derivative contracts are classified as part of either other current assets or other current liabilities in the condensed consolidated balance sheets. The notional amounts of the foreign currency derivative contracts were $1.8 billion, including contracts designated as net investment hedges of $1.3 billion, as of December 31, 2013, and $1.7 billion, including contracts designated as net investment hedges of $1.3 billion, as of March 31, 2014.

CONSOLIDATED_FINANCIAL_STATEME1

CONSOLIDATED FINANCIAL STATEMENT DETAILS (Tables)	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income	'
	The components of accumulated other comprehensive income were as follows (in thousands):
		December 31,			March 31,
		2013			2014
	Unrealized gains on available-for-sale securities, net of tax	$	15,101		$	23,229
	Unrealized gains (losses) on cash flow hedges, net of tax		1,412			(960	)
	Foreign currency translation, net of tax		301,876			140,970
	Accumulated other comprehensive income	$	318,389		$	163,239
Noncontrolling Interests	'
	Noncontrolling interests were as follows (in thousands):
		December 31,			March 31,
		2013			2014
	Beginning noncontrolling interests	$	45,403		$	55,688
	Net income attributable to noncontrolling interests		10,285			2,333
	Ending noncontrolling interests	$	55,688		$	58,021
Other Income (Expense), Net	'
	Other income, net was as follows (in thousands):
		Three Months Ended
		March 31,			March 31,
		2013			2014
	Interest, dividend and investment income	$	25,918		$	5,437
	Interest expense		(2,273	)		(17,081	)
	Other expense, net		(6,573	)		(1,809	)
	Total other income (expense), net	$	17,072		$	(13,453	)
Reclassifications Out of Accumulated Other Comprehensive Income	'
	Reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2013 were as follows (in thousands):
		Amount			Affected Line Item in the
		Reclassified from			Statement of Income
		Accumulated
		Other
		Comprehensive
		Income
	Realized gains on available-for-sale securities, net of tax	$	(37	)	Other income, net
	Total reclassifications for the period	$	(37	)
	Reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2014 were as follows (in thousands):
		Amount			Affected Line Item in the
		Reclassified from			Statement of Income
		Accumulated
		Other
		Comprehensive
		Income
	Realized gains on cash flow hedges, net of tax	$	(454	)	Revenue
	Realized gains on available-for-sale securities, net of tax		(12	)	Other income, net
	Total reclassifications for the period	$	(466	)

INTANGIBLE_ASSETS_NET_Tables

INTANGIBLE ASSETS, NET (Tables)	3 Months Ended
	Mar. 31, 2014
Intangible Assets, Net	'
	The following table summarizes the Company’s intangible assets, net (in thousands):
			December 31, 2013		March 31, 2014
			Net		Gross Carrying		Accumulated			Net
					Amount		Amortization(*)
	Customer, affiliate, and advertiser related relationships		$	205,818	$	291,972	$	(100,984	)	$	190,988
	Developed technology and patents			140,499		257,878		(123,699	)		134,179
	Trade names, trademarks, and domain names			71,491		105,978		(37,790	)		68,188
	Total intangible assets, net		$	417,808	$	655,828	$	(262,473	)	$	393,355
	(*)	Cumulative foreign currency translation adjustments, reflecting movement in the currencies of the underlying entities increased total intangible assets by approximately $19 million as of March 31, 2014.

BASIC_AND_DILUTED_NET_INCOME_A1

BASIC AND DILUTED NET INCOME ATTRIBUTABLE TO YAHOO! INC. COMMON STOCKHOLDERS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2014
Computation of Basic and Diluted Net Income Per Share	'
	The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):
		Three Months Ended
		March 31,			March 31,
		2013			2014
	Basic:
	Numerator:
	Net income attributable to Yahoo! Inc.	$	390,285		$	311,578
	Less: Net income allocated to participating securities		(11	)		(3	)
	Net income attributable to Yahoo! Inc. common stockholders—basic	$	390,274		$	311,575
	Denominator:
	Weighted average common shares		1,094,170			1,009,890
	Net income attributable to Yahoo! Inc. common stockholders per share—basic	$	0.36		$	0.31
	Diluted:
	Numerator:
	Net income attributable to Yahoo! Inc.	$	390,285		$	311,578
	Less: Net income allocated to participating securities		(11	)		(3	)
	Less: Effect of dilutive securities issued by equity investees		(2,119	)		(12,365	)
	Net income attributable to Yahoo! Inc. common stockholders—diluted	$	388,155		$	299,210
	Denominator:
	Denominator for basic calculation		1,094,170			1,009,890
	Weighted average effect of Yahoo! Inc. dilutive securities:
	Restricted stock units		11,427			15,670
	Stock options and employee stock purchase plan		2,498			5,860
	Denominator for diluted calculation		1,108,095			1,031,420
	Net income attributable to Yahoo! Inc. common stockholders per share—diluted	$	0.35		$	0.29

INVESTMENTS_IN_EQUITY_INTEREST1

INVESTMENTS IN EQUITY INTERESTS (Tables)	3 Months Ended
	Mar. 31, 2014
Investments in Equity Interests	'
	The following table summarizes the Company’s investments in equity interests (dollars in thousands):
			December 31,		Percent			March 31,		Percent
			2013		Ownership			2014		Ownership
	Alibaba Group		$	1,018,126		24	%	$	1,360,173		24	%
	Yahoo Japan			2,399,590		35	%		2,346,867		36	%
	Other			8,631		19	%		21,783		17	%
	Total		$	3,426,347				$	3,728,823
Alibaba Group	'
Condensed Financial Information	'
	The following table presents Alibaba Group’s U.S. GAAP financial information, as derived from the Alibaba Group financial statements (in thousands):
			Three Months Ended
			December 31,		December 31,
			2012		2013
	Operating data:
	Revenue		$	1,840,450	$	3,057,728
	Gross profit(*)		$	1,377,871	$	2,377,427
	Income from operations(*)		$	803,087	$	1,435,687
	Net income		$	649,977	$	1,363,761
	Net income attributable to Alibaba Group		$	642,173	$	1,348,932
			September 30,		December 31,
			2013		2013
	Balance sheet data:
	Current assets		$	7,994,731	$	11,452,808
	Long-term assets		$	5,959,835	$	6,106,707
	Current liabilities		$	4,838,510	$	6,615,917
	Long-term liabilities		$	5,319,113	$	5,325,255
	Convertible preferred shares		$	1,688,889	$	1,699,494
	Noncontrolling interests		$	92,127	$	165,983
	(*)	Certain prior period amounts have been reclassified to conform to the current period presentation with no effect on previously reported net income or stockholders’ equity.
Yahoo Japan	'
Condensed Financial Information	'
	The following tables present summarized financial information derived from Yahoo Japan’s consolidated financial statements, which are prepared on the basis of Japanese GAAP. The Company has made adjustments to the Yahoo Japan financial information to address differences between Japanese GAAP and U.S. GAAP that materially impact the summarized financial information below. Due to these adjustments, the Yahoo Japan summarized financial information presented below is not materially different than such information presented on the basis of U.S. GAAP.
			Three Months Ended
			December 31,		December 31,
			2012		2013
			(In thousands)
	Operating data:
	Revenue		$	1,195,869	$	1,031,656
	Gross profit		$	981,062	$	843,926
	Income from operations		$	614,492	$	489,442
	Net income		$	343,414	$	307,112
	Net income attributable to Yahoo Japan		$	340,550	$	304,345
			September 30,		December 31,
			2013		2013
			(In thousands)
	Balance sheet data:
	Current assets		$	6,318,156	$	5,840,384
	Long-term assets		$	1,728,912	$	1,702,207
	Current liabilities		$	1,992,508	$	1,784,072
	Long-term liabilities		$	56,762	$	53,186
	Noncontrolling interests		$	74,754	$	72,484

DERIVATIVE_FINANCIAL_INSTRUMEN1

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2014
Notional Amounts of Company's Outstanding Forward Contracts	'
	Notional amounts of the Company’s outstanding forward contracts as of December 31, 2013 and March 31, 2014 (in millions):
			December 31,				March 31,
			2013				2014
	Derivatives designated as hedging instruments:
	Net investment hedges		$	1,341			$	1,341
	Cash flow hedges		$	56			$	31
	Derivatives not designated as hedging instruments:
	Balance sheet hedges		$	393			$	335
	Forecasted revenue hedges		$	—			$	—
Schedule of Foreign Exchange Contracts	'
	Foreign currency forward contracts activity for the three months ended March 31, 2013 (in millions):
			Beginning				Settlement				Gain (Loss)			Gain (Loss)			Ending Fair
			Fair Value								Recorded in			Recorded in			Value
											Other Income,			Other
											Net			Comprehensive
														Income
	Derivatives designated as hedging instruments:
	Net investment hedges		$	3			$	—			$	—		$	270	*	$	273
	Derivatives not designated as hedging instruments:
	Balance sheet hedges			(5	)			(4	)			4			—			(5	)
	(*)	This amount does not reflect the tax impact of $101 million recorded during the three months ended March 31, 2013. The $169 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
	Foreign currency forward contracts activity for the three months ended March 31, 2014 (in millions):
			Beginning				Settlement				Gain (Loss)			Gain (Loss)			Gain			Ending Fair
			Fair Value								Recorded in			Recorded in			(Loss)			Value
											Other Income,			Other			Recorded
											Net			Comprehensive			in
														Income			Revenue
	Derivatives designated as hedging instruments:
	Net investment hedges		$	209			$	—			$	—		$	(22	)(1)	$	—		$	187
	Cash flow hedges			4				(1	)			(1	)		(2	)(2)		1			1
	Derivatives not designated as hedging instruments:
	Balance sheet hedges			—				(1	)			(1	)		—			—			(2	)
	Forecasted revenue hedges			—				—				—			—			—			—
	(1)	This amount does not reflect the tax impact of $8 million recorded during the three months ended March 31, 2014. The $14 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
	(2)	This amount does not reflect the tax impact of less than $1 million recorded during the three months ended March 31, 2014. The $1 million after tax impact of the loss was included in accumulated other comprehensive income on the Company’s condensed consolidated balance sheets.
Foreign Currency Forward Contracts Balance Sheet Location and Ending Fair Value	'
	Foreign currency forward contracts balance sheet location and ending fair value (in millions):
			Balance Sheet		December 31,				March 31,
			Location		2013				2014
	Derivatives designated as hedging instruments:
	Net investment hedges		Asset		$	209			$	187
			Liability		$	—			$	—
	Cash flow hedges		Asset		$	4			$	1
			Liability		$	—			$	—
	Derivatives not designated as hedging instruments:
	Balance sheet hedges		Asset		$	1			$	—
			Liability		$	(1	)		$	(2	)
	Forecasted revenue hedges		Asset		$	—			$	—
			Liability		$	—			$	—

CONVERTIBLE_NOTES_Tables

CONVERTIBLE NOTES (Tables)	3 Months Ended
	Mar. 31, 2014
Schedule of Notes	'
	The Notes consist of the following (in thousands):
			December 31,			March 31,
			2013			2014
	Liability component:
	Principal		$	1,437,500		$	1,437,500
	Less: note discount			(326,915	)		(312,249	)
	Net carrying amount		$	1,110,585		$	1,125,251
	Equity component (*)		$	305,569		$	305,569
	(*)	Recorded on the condensed consolidated balance sheets within additional paid-in capital.
Interest Expense Recognized Related To Notes	'
	The following table sets forth total interest expense recognized related to the Notes (in thousands):
			Three Months			Three Months
			Ended			Ended
			March  31, 2013			March  31, 2014
	Accretion of convertible note discount		$	—		$	14,666
Fair Value and Carrying Value of Notes	'
	The fair value of the Notes, which was determined based on inputs that are observable in the market (Level 2), and the carrying value of debt instruments (carrying value excludes the equity component of the Notes classified in equity) was as follows (in thousands):
			December 31, 2013						March 31, 2014
			Fair Value			Carrying Value			Fair Value		Carrying Value
	Convertible senior notes		$	1,111,473		$	1,110,585		$	1,127,393	$	1,125,251

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Mar. 31, 2014
Lease Commitments	'
	A summary of gross and net lease commitments as of March 31, 2014 was as follows (in millions):
		Gross Operating			Sublease			Net Operating
		Lease			Income			Lease
		Commitments						Commitments
	Nine months ending December 31, 2014	$	105		$	(9	)	$	96
	Years ending December 31,
	2015		113			(9	)		104
	2016		76			(2	)		74
	2017		62			—			62
	2018		39			—			39
	2019		27			—			27
	Due after 5 years		97			—			97
	Total gross and net lease commitments	$	519		$	(20	)	$	499
Capital Lease Commitment	'
		Capital Lease
		Commitment
	Nine months ending December 31, 2014	$	11
	Years ending December 31,
	2015		12
	2016		9
	2017		9
	2018		9
	2019		4
	Due after 5 years		—
	Gross lease commitment	$	54
	Less: interest		(13	)
	Net lease commitment included in capital lease and other long-term liabilities	$	41

STOCKHOLDERS_EQUITY_AND_EMPLOY1

STOCKHOLDERS' EQUITY AND EMPLOYEE BENEFITS (Tables)	3 Months Ended
	Mar. 31, 2014
Stock Option Activity	'
	The Company’s 1995 Stock Plan, the Directors’ Plan, and stock-based awards assumed through acquisitions (including stock-based commitments related to continued service of acquired employees, such as the holdback by Yahoo of shares of Yahoo common stock issued to Tumblr’s founder in connection with the Company’s acquisition of Tumblr in June 2013) are collectively referred to as the “Plans.” Stock option activity under the Company’s Plans for the three months ended March 31, 2014 is summarized as follows (in thousands, except per share amounts):
			Shares			Weighted Average
						Exercise Price Per
						Share
	Outstanding at December 31, 2013			20,968		$	20.43
	Options granted			10		$	35.9
	Options assumed in acquisitions			—		$	—
	Options exercised(*)			(2,478	)	$	38.43
	Options expired			(651	)	$	20.01
	Options cancelled/forfeited			(1,967	)	$	18.67
	Outstanding at March 31, 2014			15,882		$	17.87
	(*)	The Company issued new shares to satisfy stock option exercises.
Schedule of Assumptions used to Calculate Fair Value of Options Granted and Shares Purchased in Employee Stock Purchase Plan	'
	The fair value of option grants is determined using the Black-Scholes option pricing model with the following weighted average assumptions:
			Stock Options						Purchase Plan(*)
			Three Months Ended						Three Months Ended
			March 31,			March 31,			March 31,			March 31,
			2013			2014			2013			2014
	Expected dividend yield			0	%		0	%		0	%		0	%
	Risk-free interest rate			0.6	%		1.5	%		0.1	%		0.1	%
	Expected volatility			30.9	%		36.2	%		29.5	%		38.7	%
	Expected life (in years)			4			4			0.24			0.24
	(*)	Assumptions for the Employee Stock Purchase Plan relate to the annual average of the enrollment periods. Enrollment is permitted in February, May, August, and November of each year.
Schedule of Restricted Stock and Restricted Stock Units Activity	'
	Restricted stock and restricted stock unit activity under the Plans for the three months ended March 31, 2014 is summarized as follows (in thousands, except per share amounts):
			Shares			Weighted Average
						Grant Date
						Fair Value
						Per Share
	Awarded and unvested at December 31, 2013(*)			49,584		$	24.2
	Granted(*)			7,332		$	38.72
	Assumed in acquisitions			277		$	40.85
	Vested			(8,512	)	$	18.83
	Forfeited			(2,144	)	$	20.63
	Awarded and unvested at March 31, 2014(*)			46,537		$	27.73
	(*)	Includes the maximum number of shares issuable under the Company’s performance-based restricted stock unit awards (including future-year tranches for which goals have not been set).

RESTRUCTURING_REVERSALS_CHARGE1

RESTRUCTURING (REVERSALS) CHARGES, NET (Tables)	3 Months Ended
	Mar. 31, 2014
Restructuring (Reversals) Charges, Net	'
	Restructuring (reversals) charges, net was comprised of the following (in thousands):
		Three Months Ended March 31, 2013
		Restructuring			Q2’12			Q4’12			Total
		Plans Prior			Restructuring			Korea
		to			Plan			Business
		2012						Closure
	Employee severance pay and related costs	$	(3	)	$	(10,265	)	$	(103	)	$	(10,371	)
	Non-cancelable lease, contract terminations, and other charges		2,811			65			(114	)		2,762
	Other non-cash charges, net		—			—			547			547
	Restructuring (reversals) charges, net	$	2,808		$	(10,200	)	$	330		$	(7,062	)
		Three Months Ended March 31, 2014
		Restructuring			Q2’12			Q4’12 Korea			Q4’13			Q1’14			Total
		Plans Prior			Restructuring			Business Closure			Restructuring			Restructuring
		to			Plan						Plan			Plan
		2012
	Employee severance pay and related costs (reversals)	$	—		$	(94	)	$	—		$	98		$	3,212		$	3,216
	Non-cancelable lease, contract terminations, and other charges		6,438			35			(202	)		—			—			6,271
	Restructuring (reversals) charges, net	$	6,438		$	(59	)	$	(202	)	$	98		$	3,212		$	9,487
Restructuring Accrual Activity	'
	The Company’s restructuring accrual activity for the three months ended March 31, 2014 is summarized as follows (in thousands):
		Restructuring			Q2’12			Q4’12			Q4’13			Q1’14			Total
		Plans Prior			Restructuring			Korea Business			Restructuring			Restructuring
		to			Plan			Closure			Plan			Plan
		2012
	Balance as of January 1, 2014	$	22,349		$	2,765		$	337		$	4,645		$	—		$	30,096
	Employee severance pay and related costs		—			28			—			351			3,212			3,591
	Non-cancelable lease, contract termination, and other charges		6,496			35			1			—			—			6,532
	Changes in estimates and reversals of previous charges		(58	)		(122	)		(203	)		(253	)		—			(636	)
	Restructuring (reversals) charges, net for the three months ended March 31, 2014	$	6,438		$	(59	)	$	(202	)	$	98		$	3,212		$	9,487
	Cash paid		(5,120	)		(378	)		(135	)		(2,171	)		(2,538	)		(10,342	)
	Foreign currency		18			11			—			(17	)		3			15
	Balance as of March 31, 2014	$	23,685		$	2,339		$	—		$	2,555		$	677		$	29,256
Restructuring Accruals by Segment	'
	Restructuring accruals by segment consisted of the following (in thousands):
		December 31,			March 31,
		2013			2014
	Americas	$	18,078		$	20,170
	EMEA		11,284			8,666
	Asia Pacific		734			420
	Total restructuring accruals	$	30,096		$	29,256

SEGMENTS_Tables

SEGMENTS (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Information	'
	The following tables present summarized information by segment (in thousands):
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Revenue by segment:
	Americas		$	842,195		$	866,928
	EMEA			94,824			91,570
	Asia Pacific			203,349			174,232
	Total Revenue		$	1,140,368		$	1,132,730
	TAC by segment:
	Americas		$	37,522		$	34,094
	EMEA			11,536			9,193
	Asia Pacific			17,010			2,622
	Total TAC		$	66,068		$	45,909
	Revenue ex-TAC by segment:
	Americas		$	804,673		$	832,834
	EMEA			83,288			82,377
	Asia Pacific			186,339			171,610
	Total Revenue ex-TAC			1,074,300			1,086,821
	Direct costs by segment(1) :
	Americas			176,393			177,355
	EMEA			38,545			39,726
	Asia Pacific			54,954			44,314
	Global operating costs(2)(3)			418,803			519,045
	Depreciation and amortization			162,092			157,534
	Stock-based compensation expense			44,605			109,181
	Restructuring (reversals) charges, net			(7,062	)		9,487
	Income from operations		$	185,970		$	30,179
	(1)	Direct costs for each segment include cost of revenue—other as well as other operating expenses that are directly attributable to the segment such as employee compensation expense (excluding stock-based compensation expense), local sales and marketing expenses, and facilities expenses.
	(2)	Global operating costs include product development, service engineering and operations, general and administrative, and other corporate expenses that are managed on a global basis and that are not directly attributable to any segment.
	(3)	The net cost reimbursements from Microsoft pursuant to the Search Agreement are primarily included in global operating costs.
Capital Expenditures by Segment	'
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Capital expenditures, net:
	Americas		$	65,416		$	63,977
	EMEA			2,907			15,762
	Asia Pacific			1,258			4,916
	Total capital expenditures, net		$	69,581		$	84,655
Property and Equipment Net	'
			December 31,			March 31,
			2013			2014
	Property and equipment, net:
	Americas:
	U.S.		$	1,346,889		$	1,336,609
	Other			1,183			1,003
	Total Americas		$	1,348,072		$	1,337,612
	EMEA			44,976			53,654
	Asia Pacific			95,470			88,140
	Total property and equipment, net		$	1,488,518		$	1,479,406
Enterprise Wide Disclosures Revenues for Groups of Similar Services	'
	The following table presents revenue for groups of similar services (in thousands):
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Display		$	455,071		$	453,224
	Search			424,687			444,767
	Other			260,610			234,739
	Total revenue		$	1,140,368		$	1,132,730
			Three Months Ended
			March 31,			March 31,
			2013			2014
	Revenue:
	U.S.		$	804,753		$	833,658
	International			335,615			299,072
	Total revenue		$	1,140,368		$	1,132,730

Investments_in_Available_for_S

Investments in Available for Sale Securities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Costs	$3,372,185	$2,918,761
Gross Unrealized Gains	3,096	2,743
Gross Unrealized Losses	-1,489	-1,317
Estimated Fair Value, Total investments in available-for-sale securities	3,373,792	2,920,187
Government and agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Costs	566,470	538,397
Gross Unrealized Gains	335	65
Gross Unrealized Losses	-188	-101
Estimated Fair Value, Total investments in available-for-sale securities	566,617	538,361
Corporate Debt Securities, Commercial Paper, And Bank Certificates Of Deposit	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Costs	2,805,485	2,380,134
Gross Unrealized Gains	2,512	2,525
Gross Unrealized Losses	-1,301	-1,216
Estimated Fair Value, Total investments in available-for-sale securities	2,806,696	2,381,443
Corporate Equity Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Costs	230	230
Gross Unrealized Gains	249	153
Estimated Fair Value, Total investments in available-for-sale securities	$479	$383

Available_for_Sale_Securities_

Available for Sale Securities by Balance Sheet Location (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Short-term marketable securities	$1,741,494	$1,330,304
Long-term marketable securities	1,631,819	1,589,500
Other assets	479	383
Estimated Fair Value, Total investments in available-for-sale securities	$3,373,792	$2,920,187

Available_for_Sale_Securities_1

Available for Sale Securities by Contractual Maturities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments Classified by Contractual Maturity Date [Line Items]	'	'
Due within one year	$1,741,494	$1,330,304
Due after one year through five years	1,631,819	1,589,500
Total available-for-sale marketable securities	$3,373,313	$2,919,804

Investments_in_Unrealized_Loss

Investments in Unrealized Loss Position (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	$991,068	$960,464
Less than 12 Months, Unrealized Loss	-1,322	-1,315
12 Months or Longer, Fair Value	55,852	3,833
12 Months or Longer, Unrealized Loss	-167	-2
Total, Fair Value	1,046,920	964,297
Total, Unrealized Loss	-1,489	-1,317
Government and agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	138,841	263,514
Less than 12 Months, Unrealized Loss	-181	-101
12 Months or Longer, Fair Value	18,762	'
12 Months or Longer, Unrealized Loss	-7	'
Total, Fair Value	157,603	263,514
Total, Unrealized Loss	-188	-101
Corporate Debt Securities, Commercial Paper, And Bank Certificates Of Deposit	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	852,227	696,950
Less than 12 Months, Unrealized Loss	-1,141	-1,214
12 Months or Longer, Fair Value	37,090	3,833
12 Months or Longer, Unrealized Loss	-160	-2
Total, Fair Value	889,317	700,783
Total, Unrealized Loss	($1,301)	($1,216)

Fair_Value_of_Financial_Assets

Fair Value of Financial Assets (Detail) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value Measurements At Reporting Date Using Level 1	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Financial assets at fair value	$392,619		$936,808
Total financial assets and liabilities at fair value	392,619		936,808
Fair Value Measurements At Reporting Date Using Level 1 | Money Market Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Money market funds	392,140	[1]	936,438	[1]
Fair Value Measurements At Reporting Date Using Level 1 | Corporate Equity Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	479	[2]	370	[2]
Fair Value Measurements At Reporting Date Using Level 2	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Financial assets at fair value	3,702,003		3,705,920
Total financial assets and liabilities at fair value	3,700,030		3,704,519
Fair Value Measurements At Reporting Date Using Level 2 | Government and agency securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	608,619	[1]	876,197	[1]
Fair Value Measurements At Reporting Date Using Level 2 | Commercial Paper And Bank Certificates Of Deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	416,835	[1]	472,080	[1]
Fair Value Measurements At Reporting Date Using Level 2 | Corporate Debt Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	2,392,063	[1]	2,059,159	[1]
Fair Value Measurements At Reporting Date Using Level 2 | Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	96,711	[1]	84,443	[1]
Fair Value Measurements At Reporting Date Using Level 2 | Foreign Currency Derivative Contracts	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency derivative contracts	187,775	[3]	214,041	[3]
Foreign currency derivative contracts	-1,973	[3]	-1,401	[3]
Fair Value Measurements At Reporting Date Using Total	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Financial assets at fair value	4,094,622		4,642,728
Total financial assets and liabilities at fair value	4,092,649		4,641,327
Fair Value Measurements At Reporting Date Using Total | Money Market Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Money market funds	392,140	[1]	936,438	[1]
Fair Value Measurements At Reporting Date Using Total | Government and agency securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	608,619	[1]	876,197	[1]
Fair Value Measurements At Reporting Date Using Total | Commercial Paper And Bank Certificates Of Deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	416,835	[1]	472,080	[1]
Fair Value Measurements At Reporting Date Using Total | Corporate Debt Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	2,392,063	[1]	2,059,159	[1]
Fair Value Measurements At Reporting Date Using Total | Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	96,711	[1]	84,443	[1]
Fair Value Measurements At Reporting Date Using Total | Corporate Equity Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	479	[2]	370	[2]
Fair Value Measurements At Reporting Date Using Total | Foreign Currency Derivative Contracts	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency derivative contracts	187,775	[3]	214,041	[3]
Foreign currency derivative contracts	($1,973)	[3]	($1,401)	[3]
[1]	The money market funds, government and agency securities, commercial paper and bank certificates of deposit, corporate debt securities, and time deposits are classified as part of either cash and cash equivalents or investments in marketable securities in the condensed consolidated balance sheets.
[2]	The corporate equity securities are classified as part of other long-term assets in the condensed consolidated balance sheets.
[3]	Foreign currency derivative contracts are classified as part of either other current assets or other current liabilities in the condensed consolidated balance sheets. The notional amounts of the foreign currency derivative contracts were $1.8 billion, including contracts designated as net investment hedges of $1.3 billion, as of December 31, 2013, and $1.7 billion, including contracts designated as net investment hedges of $1.3 billion, as of March 31, 2014.

Fair_Value_of_Financial_Assets1

Fair Value of Financial Assets (Parenthetical) (Detail) (Foreign Currency Derivative Contracts, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign currency derivative contract, notional amount	$1,700	$1,800
Net Investment Hedging	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Foreign currency derivative contract, notional amount	$1,341	$1,341

Investment_and_Fair_Value_Meas

Investment and Fair Value Measurements - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Cash And Cash Equivalents And Investments [Line Items]	'	'
Cash deposited with commercial banks	$665,000,000	$569,000,000
Convertible Senior Notes	'	'
Cash And Cash Equivalents And Investments [Line Items]	'	'
Principal amount	1,437,500,000	1,437,500,000
Convertible senior notes percent	0.00%	0.00%
Maturity year of convertible senior notes	'	'2018
Fair Value Measurements At Reporting Date Using Level 2 | Convertible Senior Notes	'	'
Cash And Cash Equivalents And Investments [Line Items]	'	'
Fair value of the convertible senior notes	$1,127,393,000	$1,111,473,000

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Unrealized gains on available-for-sale securities, net of tax	$23,229	$15,101
Unrealized gains (losses) on cash flow hedges, net of tax	-960	1,412
Foreign currency translation, net of tax	140,970	301,876
Accumulated other comprehensive income	$163,239	$318,389

Noncontrolling_Interests_Detai

Noncontrolling Interests (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Noncontrolling Interest [Line Items]	'	'	'
Beginning noncontrolling interests	$55,688	$45,403	$45,403
Net income attributable to noncontrolling interests	2,333	609	10,285
Ending noncontrolling interests	$58,021	'	$55,688

Other_Income_Net_Detail

Other Income, Net (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Components of Other Income (Expense) [Line Items]	'	'
Interest, dividend and investment income	$5,437	$25,918
Interest expense	-17,081	-2,273
Other expense, net	-1,809	-6,573
Total other income (expense), net	($13,453)	$17,072

Reclassifications_Out_of_Accum

Reclassifications Out of Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Other income, net	($13,453)	$17,072
Net income attributable to Yahoo! Inc.	311,578	390,285
Revenue	1,132,730	1,140,368
Reclassification out of Accumulated Other Comprehensive Income	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Net income attributable to Yahoo! Inc.	-466	-37
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Revenue	-454	'
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Realized Investment Gains (Losses)	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'
Other income, net	($12)	($37)

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
	Entity	Entity
Business Acquisition [Line Items]	'	'
Business combination, number of entities acquired	5	3
Business combination, total purchase price	$23,000,000	$10,000,000
Business combination, cash acquired	1,000,000	'
Business combination, cash consideration paid net of cash acquired	21,661,000	10,147,000
Business combination, amortizable intangible assets	9,000,000	'
Business combination, cash acquired	1,000,000	'
Business combination, assumed liabilities	3,000,000	'
Goodwill, additions	$16,000,000	'

Goodwill_Additional_Informatio

Goodwill - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]	'	'
Goodwill	$4,699,319,000	$4,679,648,000
Increase in carrying amount of goodwill	20,000,000	'
Foreign currency translation adjustments	4,000,000	'
Additions	16,000,000	'
Americas	'	'
Goodwill [Line Items]	'	'
Goodwill	3,800,000,000	3,800,000,000
EMEA	'	'
Goodwill [Line Items]	'	'
Goodwill	600,000,000	600,000,000
Asia Pacific	'	'
Goodwill [Line Items]	'	'
Goodwill	$300,000,000	$300,000,000

Intangible_Assets_Net_Detail

Intangible Assets Net (Detail) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'		'
Net	$393,355		$417,808
Gross Carrying Amount	655,828		'
Accumulated Amortization	-262,473	[1]	'
Customer, Affiliate And Advertiser Related Relationships	'		'
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'		'
Net	190,988		205,818
Gross Carrying Amount	291,972		'
Accumulated Amortization	-100,984	[1]	'
Developed Technology And Patents	'		'
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'		'
Net	134,179		140,499
Gross Carrying Amount	257,878		'
Accumulated Amortization	-123,699	[1]	'
Trade Names, Trademarks, And Domain Names	'		'
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'		'
Net	68,188		71,491
Gross Carrying Amount	105,978		'
Accumulated Amortization	($37,790)	[1]	'
[1]	Cumulative foreign currency translation adjustments, reflecting movement in the currencies of the underlying entities increased total intangible assets by approximately $19 million as of March 31, 2014.

Intangible_Assets_Net_Parenthe

Intangible Assets Net (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'
Cumulative foreign currency translation adjustments	$19

Intangible_Assets_Net_Addition

Intangible Assets Net - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'	'
Amortization expense for intangible assets	$34	$18
Amortization expense in cost of revenue - other	16	11
Estimated amortization expense for the remainder of 2014	86	'
Estimated amortization expense 2015	93	'
Estimated amortization expense 2016	68	'
Estimated amortization expense 2017	60	'
Estimated amortization expense 2018	49	'
Estimated amortization expense, cumulatively thereafter	$20	'

Recovered_Sheet1

Basic and Diluted Net Income Attributable to Yahoo Inc. Common Stockholders Per Share - Additional Information (Detail)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]	'	'
Anti-dilutive securities excluded from computation of earnings per share	2	24

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Net Income per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]	'	'
Net income attributable to Yahoo! Inc.	$311,578	$390,285
Less: Net income allocated to participating securities	-3	-11
Net income attributable to Yahoo! Inc. common stockholders-basic	311,575	390,274
Weighted average common shares	1,009,890	1,094,170
Net income attributable to Yahoo! Inc. common stockholders per share-basic	$0.31	$0.36
Net income attributable to Yahoo! Inc.	311,578	390,285
Less: Net income allocated to participating securities	-3	-11
Less: Effect of dilutive securities issued by equity investees	-12,365	-2,119
Net income attributable to Yahoo! Inc. common stockholders-diluted	$299,210	$388,155
Denominator for basic calculation	1,009,890	1,094,170
Restricted stock units	15,670	11,427
Stock options and employee stock purchase plan	5,860	2,498
Denominator for diluted calculation	1,031,420	1,108,095
Net income attributable to Yahoo! Inc. common stockholders per share-diluted	$0.29	$0.35

Recovered_Sheet2

Investments in Equity Interests (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Equity Method Investments [Line Items]	'	'
Investment in equity interests	$3,728,823	$3,426,347
Alibaba Group	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in equity interests	1,360,173	1,018,126
Percent ownership of common stock as of balance sheet date	24.00%	24.00%
Yahoo Japan	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in equity interests	2,346,867	2,399,590
Percent ownership of common stock as of balance sheet date	36.00%	35.00%
Other	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in equity interests	$21,783	$8,631
Percent ownership of common stock as of balance sheet date	17.00%	19.00%

Recovered_Sheet3

Investments in Equity Interests - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		12 Months Ended		3 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Sep. 18, 2012	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Oct. 14, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	Alibaba Group	Alibaba Group	Alibaba Group	Alibaba Group	Alibaba Group	Alibaba Group	Alibaba Group	Yahoo Japan	Yahoo Japan	Yahoo Japan
						Before Amendment	Before Amendment
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'
Sale of investments in equity interests, shares	523	'	'	523	'	'	'	'	'	'
Shares of Alibaba Group owned by Yahoo	1,047	'	'	'	'	'	'	'	'	'
Sale of investments in equity interests, price per share	$13.54	'	'	'	'	'	'	'	'	'
Sale of investments in equity interests, total consideration received	$7,100,000,000	'	'	'	'	'	'	'	'	'
Sale of investments in equity interests, cash received	6,300,000,000	'	'	'	'	'	'	'	'	'
Sale of investments in equity interests, value of preference shares	800,000,000	'	'	'	'	'	'	'	'	'
Gain related to sale of Alibaba Group shares	'	'	'	4,600,000,000	'	'	'	'	'	'
Maximum number of shares required to sell in connection with Qualified IPO	261.5	'	'	'	208	'	'	'	'	'
Future Royalty Payment received	550,000,000	'	'	'	'	'	'	'	'	'
Technology and Intellectual Property License Agreement, remaining term	'	'4 years	'	'	'	'	'	'	'	'
Royalty received	'	34,000,000	34,000,000	'	'	34,000,000	35,000,000	'	'	'
Fair value of the company's ownership interest in the common stock of Yahoo Japan	'	'	'	'	'	'	'	10,000,000,000	'	'
Cash proceeds from sale of data center assets	'	'	'	'	'	'	'	11,000,000	'	'
Net gain on sale of data center assets	'	'	'	'	'	'	'	5,000,000	'	'
Revenue received through commercial arrangements with Yahoo Japan	'	'	'	'	'	'	'	68,000,000	70,000,000	'
Net receivables balance from Yahoo Japan	'	'	'	'	'	'	'	$47,000,000	'	$42,000,000

Alibaba_Group_Condensed_Financ

Alibaba Group Condensed Financial Information Operating Data (Detail) (Alibaba Group, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Alibaba Group	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Revenue	$3,057,728		$1,840,450
Gross profit	2,377,427	[1]	1,377,871	[1]
Income from operations	1,435,687	[1]	803,087	[1]
Net income	1,363,761		649,977
Net income attributable to Alibaba Group	$1,348,932		$642,173
[1]	Certain prior period amounts have been reclassified to conform to the current period presentation with no effect on previously reported net income or stockholders' equity.

Alibaba_Group_Condensed_Financ1

Alibaba Group Condensed Financial Information Balance Sheet Data (Detail) (Alibaba Group, USD $)	Dec. 31, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified
Alibaba Group	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Current assets	$11,452,808	$7,994,731
Long-term assets	6,106,707	5,959,835
Current liabilities	6,615,917	4,838,510
Long-term liabilities	5,325,255	5,319,113
Convertible preferred shares	1,699,494	1,688,889
Noncontrolling interests	$165,983	$92,127

Yahoo_Japan_Condensed_Financia

Yahoo Japan Condensed Financial Information Operating Data (Detail) (Yahoo Japan, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Yahoo Japan	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Revenue	$1,031,656	$1,195,869
Gross profit	843,926	981,062
Income from operations	489,442	614,492
Net income	307,112	343,414
Net income attributable to Yahoo Japan	$304,345	$340,550

Yahoo_Japan_Condensed_Financia1

Yahoo Japan Condensed Financial Information Balance Sheet Data (Detail) (Yahoo Japan, USD $)	Dec. 31, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified
Yahoo Japan	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Current assets	$5,840,384	$6,318,156
Long-term assets	1,702,207	1,728,912
Current liabilities	1,784,072	1,992,508
Long-term liabilities	53,186	56,762
Noncontrolling interests	$72,484	$74,754

Notional_Amounts_of_Outstandin

Notional Amounts of Outstanding Forward Contracts (Detail) (Foreign Currency Derivative Contracts, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative [Line Items]	'	'
Derivative notional amount	$1,700	$1,800
Net Investment Hedging	'	'
Derivative [Line Items]	'	'
Derivative notional amount	1,341	1,341
Designated as Hedging Instrument | Net Investment Hedging	'	'
Derivative [Line Items]	'	'
Derivative notional amount	1,341	1,341
Designated as Hedging Instrument | Cash Flow Hedges	'	'
Derivative [Line Items]	'	'
Derivative notional amount	31	56
Not Designated as Hedging Instrument | Balance Sheet Hedges	'	'
Derivative [Line Items]	'	'
Derivative notional amount	$335	$393

Foreign_Currency_Forward_Contr

Foreign Currency Forward Contracts Activity (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Balance Sheet Hedges | Not Designated as Hedging Instrument	'		'
Derivative [Line Items]	'		'
Beginning Fair Value	'		($5,000,000)
Settlement	-1,000,000		-4,000,000
Gain (Loss) Recorded in Other Income, Net	-1,000,000		4,000,000
Gain (Loss) Recorded in Other Comprehensive Income	'		'
Ending Fair Value	-2,000,000		-5,000,000
Forecasted Revenue Hedges | Not Designated as Hedging Instrument	'		'
Derivative [Line Items]	'		'
Gain (Loss) Recorded in Other Comprehensive Income	'		'
Cash Flow Hedges | Designated as Hedging Instrument	'		'
Derivative [Line Items]	'		'
Beginning Fair Value	4,000,000		'
Settlement	-1,000,000		'
Gain (Loss) Recorded in Other Income, Net	-1,000,000		'
Gain (Loss) Recorded in Other Comprehensive Income	-2,000,000	[1]	'
Gain (Loss) Recorded in Revenue	1,000,000		'
Ending Fair Value	1,000,000		'
Net Investment Hedging | Designated as Hedging Instrument	'		'
Derivative [Line Items]	'		'
Beginning Fair Value	209,000,000		3,000,000
Gain (Loss) Recorded in Other Comprehensive Income	-22,000,000	[2]	270,000,000	[3]
Ending Fair Value	$187,000,000		$273,000,000
[1]	This amount does not reflect the tax impact of less than $1 million recorded during the three months ended March 31, 2014. The $1 million after tax impact of the loss was included in accumulated other comprehensive income on the Company's condensed consolidated balance sheets.
[2]	This amount does not reflect the tax impact of $8 million recorded during the three months ended March 31, 2014. The $14 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company's condensed consolidated balance sheets.
[3]	This amount does not reflect the tax impact of $101 million recorded during the three months ended March 31, 2013. The $169 million after tax impact of the gain recorded within other comprehensive income was included in accumulated other comprehensive income on the Company's condensed consolidated balance sheets.

Foreign_Currency_Forward_Contr1

Foreign Currency Forward Contracts Activity (Parenthetical) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative [Line Items]	'	'
Net investment hedge CTA, tax	$8,432,000	($101,296,000)
Net investment hedge CTA, net of tax	-14,049,000	168,714,000
Cash flow hedge CTA, net of tax	-960,000	'
Derivatives Designated as Hedging Instruments | Net Investment Hedging	'	'
Derivative [Line Items]	'	'
Net investment hedge CTA, tax	8,432,000	101,296,000
Net investment hedge CTA, net of tax	14,049,000	168,714,000
Maximum | Derivatives Designated as Hedging Instruments | Cash Flow Hedges	'	'
Derivative [Line Items]	'	'
Cash flow hedge CTA, tax	1,000,000	'
Cash flow hedge CTA, net of tax	($1,000,000)	'

Foreign_Currency_Forward_Contr2

Foreign Currency Forward Contracts Balance Sheet Location and Ending Fair Value (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Designated as Hedging Instrument | Net Investment Hedging	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value asset	$187,000,000	$209,000,000	$273,000,000	$3,000,000
Designated as Hedging Instrument | Net Investment Hedging | Assets	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value asset	187,000,000	209,000,000	'	'
Designated as Hedging Instrument | Cash Flow Hedges	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value asset	1,000,000	4,000,000	'	'
Designated as Hedging Instrument | Cash Flow Hedges | Assets	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value asset	1,000,000	4,000,000	'	'
Not Designated as Hedging Instrument | Balance Sheet Hedges	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value liability	-2,000,000	'	-5,000,000	-5,000,000
Not Designated as Hedging Instrument | Balance Sheet Hedges | Assets	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value asset	'	1,000,000	'	'
Not Designated as Hedging Instrument | Balance Sheet Hedges | Liabilities	'	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'	'
Foreign currency forward contract, fair value liability	($2,000,000)	($1,000,000)	'	'

Credit_Agreement_Additional_In

Credit Agreement - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Line of Credit Facility [Line Items]	'
Unsecured revolving credit facility	750,000,000
Unsecured revolving credit facility, additional commitment	250,000,000
Unsecured revolving credit facility, outstanding	0
After Amendment	'
Line of Credit Facility [Line Items]	'
Unsecured revolving credit facility expiration date	9-Oct-14

Convertible_Notes_Additional_I

Convertible Notes - Additional Information (Detail) (Convertible Senior Notes, USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Convertible Senior Notes	'	'
Debt Instrument [Line Items]	'	'
Convertible senior notes percent	0.00%	0.00%
Principal amount	$1,437,500,000	$1,437,500,000
Conversion rate per $1,000 principal amount of Notes	18.7161	'
Purchase price of notes as percentage of principal amount, plus accrued and unpaid interest	100.00%	'
Convertible note, par amount	$1,000	'
Initial conversion price	$53.43	'
Maturity date, convertible note	1-Dec-18	'

Schedule_of_Notes_Detail

Schedule of Notes (Detail) (Convertible Senior Notes, USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Convertible Senior Notes	'		'
Debt Instrument [Line Items]	'		'
Principal	$1,437,500		$1,437,500
Less: note discount	-312,249		-326,915
Net carrying amount	1,125,251		1,110,585
Equity component	$305,569	[1]	$305,569	[1]
[1]	Recorded on the condensed consolidated balance sheets within additional paid-in capital.

Interest_Expense_Recognized_Re

Interest Expense Recognized Related To Notes (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Schedule Of Interest Expenses [Line Items]	'
Accretion of convertible note discount	$14,666
Convertible Senior Notes	'
Schedule Of Interest Expenses [Line Items]	'
Accretion of convertible note discount	$14,666

Fair_Value_and_Carrying_Value_

Fair Value and Carrying Value of Notes (Detail) (Convertible Senior Notes, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Carrying Value	$1,125,251	$1,110,585
Fair Value Measurements At Reporting Date Using Level 2	'	'
Debt Instrument [Line Items]	'	'
Fair Value	$1,127,393	$1,111,473

Recovered_Sheet4

Commitments and Contingencies - Additional Information (Detail) (USD $)

0 Months Ended

3 Months Ended

1 Months Ended

0 Months Ended

0 Months Ended

3 Months Ended

Share data in Millions, unless otherwise specified

15-May-13

Nov. 16, 2011

Mar. 31, 2014

Dec. 07, 2011

Nov. 30, 2012

Nov. 28, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Jul. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

LegalMatter

Damages Alleged, Loss of Profit

Non-Final Judgment

Payable In 2014

Payable In 2015

Payable In 2016

Share repurchase from Third Point

Minimum

Maximum

May 2012 Plan

Commitments and Contingencies Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Lease periods (years)

'

'

'12 years

'

'

'

'

'

'

'

'

'

Lease expiration period

'

'

'

'

'

'

'

'

'

'

'2014

'2025

Affiliate commitments

'

'

$216,000,000

'

'

'

$10,000,000

$205,000,000

$1,000,000

'

'

'

Intellectual property arrangements through 2023

'

'

23,000,000

'

'

'

'

'

'

'

'

'

Intellectual property arrangements, expiration year

'

'

'2023

'

'

'

'

'

'

'

'

'

Number of purported stockholder class action suits filed

'

'

2

'

'

'

'

'

'

'

'

'

Repurchases of common stock, shares

'

'

12

'

'

'

'

'

'

40

'

'

Alleged total damages

'

2,750,000,000

'

'

2,400,000,000

2,750,000,000

'

'

'

'

'

'

Counterclaim filed for payments of services rendered

2,600,000

'

'

2,600,000

'

2,600,000

'

'

'

'

'

'

Loss Contingency

$172,500

'

'

'

'

'

'

'

'

'

'

'

Lease_Commitments_Detail

Lease Commitments (Detail) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Commitments and Contingencies [Line Items]	'
Gross operating lease commitments, nine months ending December 31, 2014	$105
Gross operating lease commitments, years ending December 31, 2015	113
Gross operating lease commitments, 2016	76
Gross operating lease commitments, 2017	62
Gross operating lease commitments, 2018	39
Gross operating lease commitments, 2019	27
Gross operating lease commitments, due after 5 years	97
Total gross operating lease commitments	519
Sublease income, nine months ending December 31, 2014	-9
Sublease income, years ending December 31, 2015	-9
Sublease income, 2016	-2
Sublease income, 2017	'
Sublease income, 2018	'
Sublease income, 2019	'
Sublease income, due after 5 years	'
Total sublease income	-20
Net operating lease commitments, nine months ending December 31, 2014	96
Net operating lease commitments, years ending December 31, 2015	104
Net operating lease commitments, 2016	74
Net operating lease commitments, 2017	62
Net operating lease commitments, 2018	39
Net operating lease commitments, 2019	27
Net operating lease commitments, due after 5 years	97
Total net operating lease commitments	$499

Capital_Lease_Commitment_Detai

Capital Lease Commitment (Detail) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Schedule of Capital Lease Obligations [Line Items]	'
Nine months ending December 31, 2014	$11
Years ending December 31, 2015	12
2016	9
2017	9
2018	9
2019	4
Due after 5 years	'
Gross lease commitment	54
Less: interest	-13
Net lease commitment included in capital lease and other long-term liabilities	$41

Recovered_Sheet5

Stockholders Equity and Employee Benefits - Additional Information (Detail) (USD $)

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

31-May-12

Mar. 31, 2014

Nov. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

GAAP Revenue

Adjusted EBITDA

May 2012 Plan

May 2012 Plan

November 2013 Plan

November 2013 Plan

Employee Stock Purchase Plan

Stock Options

Restricted Stock Awards And Units

Restricted Stock Awards And Units

Performance Based Stock Options

Performance Based Stock Options

Performance Based Stock Options

Performance Based Restricted Stock Units

Performance Based Restricted Stock Units

Performance Based Restricted Stock Units

Performance Based Restricted Stock Units

Performance Based Restricted Stock Units

Minimum

Maximum

First Tranche

Second Tranche

Minimum

Maximum

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized stock-based compensation expense

'

'

'

'

'

'

'

'

$1,000,000

$36,000,000

$750,000,000

'

'

'

'

'

'

'

'

'

Stock-based compensation, recognition period

'

'

'

'

'

'

'

'

'1 month 6 days

'1 year

'2 years 9 months 18 days

'

'12 months

'

'

'12 months

'

'

'

'

Vested

'

'

'

'

'

'

'

'

'

'

8,512,000

5,600,000

'

'

'

'

'

'

'

'

Shares withheld to settle employees' minimum statutory obligation for applicable income and other employment taxes

'

'

'

'

'

'

'

'

'

'

3,300,000

2,100,000

'

'

'

'

'

'

'

'

Payments made to taxing authorities for employees' tax obligations

125,403,000

43,689,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock awards vesting percentage for each performance period

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

100.00%

'

'

'

0.00%

200.00%

Stock options grant date fair value

'

'

'

'

'

'

'

'

'

'

'

'

38,000,000

'

'

'

'

'

'

'

Financial performance metrics for stock option awards

'

'

70.00%

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Financial performance metrics for restricted stock units awards

'

'

70.00%

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock units grant date fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,000,000

17,000,000

'

'

Treasury stock repurchase authorization value

'

'

'

'

5,000,000,000

'

5,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchase program expiration date

'

'

'

'

'

'2015-06

'

'2016-12

'

'

'

'

'

'

'

'

'

'

'

'

Remaining authorized purchase capacity

'

'

'

'

'

'

'

4,600,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Repurchases of common stock, shares

12,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repurchases of common stock, value

$450,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average purchase price per share of common stock repurchased during the period

$37.65

'

'

'

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Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding stock options, Beginning balance	20,968
Stock options granted during the period	10
Stock options assumed in acquisitions during the period	'
Stock options exercised during the period	-2,478	[1]
Stock options expired during the period	-651
Stock options cancelled/forfeited during the period	-1,967
Outstanding stock options, Ending balance	15,882
Weighted average exercise price of options outstanding, Beginning balance	$20.43
Weighted-average exercise price of shares granted during period	$35.90
Weighted-average exercise price of shares assumed in acquisitions during period	'
Weighted-average exercise price of shares exercised during period	$38.43	[1]
Weighted-average exercise price of shares expired during period	$20.01
Weighted-average exercise price of shares cancelled/forfeited during period	$18.67
Weighted average exercise price of options outstanding, Ending balance	$17.87
[1]	The Company issued new shares to satisfy stock option exercises.

Weighted_Average_Assumptions_U

Weighted Average Assumptions Used to Calculate Fair Value of Options Granted (Detail)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Stock Options	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'
Expected dividend yield	0.00%		0.00%
Risk-free interest rate	1.50%		0.60%
Expected volatility	36.20%		30.90%
Expected life (in years)	'4 years		'4 years
Employee Stock Purchase Plan	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'
Expected dividend yield	0.00%	[1]	0.00%	[1]
Risk-free interest rate	0.10%	[1]	0.10%	[1]
Expected volatility	38.70%	[1]	29.50%	[1]
Expected life (in years)	'2 months 27 days	[1]	'2 months 27 days	[1]
[1]	Assumptions for the Employee Stock Purchase Plan relate to the annual average of the enrollment periods. Enrollment is permitted in February, May, August, and November of each year.

Restricted_Stock_Awards_and_Re

Restricted Stock Awards and Restricted Stock Units Activity (Detail) (Restricted Stock Awards And Units, USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Restricted Stock Awards And Units	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'
Awarded and unvested, Beginning balance	49,584	[1]	'
Granted	7,332	[1]	'
Assumed in acquisitions	277		'
Vested	-8,512		-5,600
Forfeited	-2,144		'
Awarded and unvested, Ending balance	46,537	[1]	'
Weighted-average grant date fair value per share, Beginning balance	$24.20	[1]	'
Weighted-average grant date fair value per share, granted shares	$38.72	[1]	'
Weighted-average grant date fair value per share, assumed in acquisitions	$40.85		'
Weighted-average grant date fair value per share, vested shares	$18.83		'
Weighted-average grant date fair value per share, forfeited shares	$20.63		'
Weighted-average grant date fair value per share, Ending balance	$27.73	[1]	'
[1]	Includes the maximum number of shares issuable under the Company's performance-based restricted stock unit awards (including future-year tranches for which goals have not been set).

Restructuring_Charges_Reversal

Restructuring Charges (Reversals), Net (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	$3,216	($10,371)
Non-cancelable lease, contract terminations, and other charges	6,271	2,762
Other non-cash charges, net	'	547
Restructuring (reversals) charges, net	9,487	-7,062
Restructuring Plans Prior to 2012	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	'	-3
Non-cancelable lease, contract terminations, and other charges	6,438	2,811
Restructuring (reversals) charges, net	6,438	2,808
Q2'12 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	-94	-10,265
Non-cancelable lease, contract terminations, and other charges	35	65
Restructuring (reversals) charges, net	-59	-10,200
Q4'12 Korea Business Closure	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	'	-103
Non-cancelable lease, contract terminations, and other charges	-202	-114
Other non-cash charges, net	'	547
Restructuring (reversals) charges, net	-202	330
Q4'13 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	98	'
Restructuring (reversals) charges, net	98	'
Q1'14 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Employee severance pay and related costs (reversals)	3,212	'
Restructuring (reversals) charges, net	$3,212	'

Recovered_Sheet6

Restructuring (Reversals) Charges, Net - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2012	Dec. 31, 2013
			Person
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Changes in estimates and reversals of previous charges	($636,000)	'	'	'
Restructuring charges, net	9,487,000	-7,062,000	'	'
Restructuring liability	29,256,000	'	'	30,096,000
Employee Severance	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring liability	4,000,000	'	'	'
Non-Cancelable Lease Costs	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring liability	25,000,000	'	'	'
Americas	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring liability	20,170,000	'	'	18,078,000
EMEA	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring liability	8,666,000	'	'	11,284,000
Asia Pacific	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring liability	420,000	'	'	734,000
Restructuring Plans Prior to 2012	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Pre-tax charges in severance, facility and other related costs	'	3,000,000	'	'
Pre-tax charges in facility and other related costs	6,000,000	'	'	'
Changes in estimates and reversals of previous charges	-58,000	'	'	'
Restructuring charges, net	6,438,000	2,808,000	'	'
Restructuring liability	23,685,000	'	'	22,349,000
Restructuring Plans Prior to 2012 | Americas	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Pre-tax charges in facility and other related costs	5,000,000	'	'	'
Restructuring Plans Prior to 2012 | EMEA	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Pre-tax charges in facility and other related costs	1,000,000	'	'	'
Q2'12 Restructuring Plan	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Number of employees whose employment was terminated	'	'	2,000	'
Pre-tax charges in severance and facility related costs	'	6,000,000	'	'
Changes in estimates and reversals of previous charges	-122,000	-16,000,000	'	'
Restructuring charges, net	-59,000	-10,200,000	'	'
Restructuring liability	2,339,000	'	'	2,765,000
Q2'12 Restructuring Plan | Americas	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring charges, net	'	-6,000,000	'	'
Q2'12 Restructuring Plan | EMEA	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring charges, net	'	-4,000,000	'	'
Q4'12 Korea Business Closure	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Changes in estimates and reversals of previous charges	-203,000	'	'	'
Restructuring charges, net	-202,000	330,000	'	'
Restructuring liability	'	'	'	337,000
Q4'12 Korea Business Closure | Asia Pacific | Maximum	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Pre-tax charges in severance, facility and other related costs	'	1,000,000	'	'
Q1'14 Restructuring Plan	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Restructuring charges, net	3,212,000	'	'	'
Restructuring liability	677,000	'	'	'
Q1'14 Restructuring Plan | EMEA	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Pre-tax charges in severance and other related costs	$3,212,000	'	'	'

Restructuring_Accrual_Activity

Restructuring Accrual Activity (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	$30,096	'
Changes in estimates and reversals of previous charges	-636	'
Restructuring charges, net	9,487	-7,062
Cash paid	-10,342	'
Foreign currency	15	'
Ending balance	29,256	'
Restructuring Plans Prior to 2012	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	22,349	'
Changes in estimates and reversals of previous charges	-58	'
Restructuring charges, net	6,438	2,808
Cash paid	-5,120	'
Foreign currency	18	'
Ending balance	23,685	'
Q2'12 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	2,765	'
Changes in estimates and reversals of previous charges	-122	-16,000
Restructuring charges, net	-59	-10,200
Cash paid	-378	'
Foreign currency	11	'
Ending balance	2,339	'
Q4'12 Korea Business Closure	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	337	'
Changes in estimates and reversals of previous charges	-203	'
Restructuring charges, net	-202	330
Cash paid	-135	'
Q4'13 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning balance	4,645	'
Changes in estimates and reversals of previous charges	-253	'
Restructuring charges, net	98	'
Cash paid	-2,171	'
Foreign currency	-17	'
Ending balance	2,555	'
Q1'14 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	3,212	'
Cash paid	-2,538	'
Foreign currency	3	'
Ending balance	677	'
Severance Pay and Related Costs	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	3,591	'
Severance Pay and Related Costs | Q2'12 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	28	'
Severance Pay and Related Costs | Q4'13 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	351	'
Severance Pay and Related Costs | Q1'14 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	3,212	'
Non-Cancelable Lease, Contract Termination, And Other Charges	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	6,532	'
Non-Cancelable Lease, Contract Termination, And Other Charges | Restructuring Plans Prior to 2012	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	6,496	'
Non-Cancelable Lease, Contract Termination, And Other Charges | Q2'12 Restructuring Plan	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	35	'
Non-Cancelable Lease, Contract Termination, And Other Charges | Q4'12 Korea Business Closure	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring charges, net	$1	'

Restructuring_Accruals_by_Segm

Restructuring Accruals by Segment (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Restructuring Cost and Reserve [Line Items]	'	'
Total restructuring accruals	$29,256	$30,096
Americas	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total restructuring accruals	20,170	18,078
EMEA	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total restructuring accruals	8,666	11,284
Asia Pacific	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Total restructuring accruals	$420	$734

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended	12 Months Ended
Share data in Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Sep. 18, 2012	Dec. 31, 2012
				Alibaba Group	Alibaba Group
Income Taxes [Line Items]	'	'	'	'	'
Effective tax rate	25.00%	15.00%	'	'	'
Undistributed earnings of foreign subsidiaries	$2,800,000,000	'	'	'	'
Unrecognized tax benefits	691,000,000	'	'	'	'
Unrecognized tax benefits recorded on condensed consolidated balance sheets	603,000,000	'	'	'	'
Increase (decrease) in gross unrecognized tax benefit	-4,000,000	'	'	'	'
Sale of investments in equity interests, shares	'	'	'	523	523
Indirect tax assessed, not accrued	'	'	$85,000,000	'	'

Segment_Information_Detail

Segment Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Information [Line Items]	'		'
Revenue	$1,132,730		$1,140,368
TAC	45,909		66,068
Revenue ex-TAC	1,086,821		1,074,300
Global operating costs	519,045	[1],[2]	418,803	[1],[2]
Depreciation and amortization	157,534		162,092
Stock-based compensation expense	109,181		44,605
Restructuring (reversals) charges, net	9,487		-7,062
Income from operations	30,179		185,970
Americas	'		'
Segment Reporting Information [Line Items]	'		'
Revenue	866,928		842,195
TAC	34,094		37,522
Revenue ex-TAC	832,834		804,673
Direct costs by segment	177,355	[3]	176,393	[3]
EMEA	'		'
Segment Reporting Information [Line Items]	'		'
Revenue	91,570		94,824
TAC	9,193		11,536
Revenue ex-TAC	82,377		83,288
Direct costs by segment	39,726	[3]	38,545	[3]
Asia Pacific	'		'
Segment Reporting Information [Line Items]	'		'
Revenue	174,232		203,349
TAC	2,622		17,010
Revenue ex-TAC	171,610		186,339
Direct costs by segment	$44,314	[3]	$54,954	[3]
[1]	Global operating costs include product development, service engineering and operations, general and administrative, and other corporate expenses that are managed on a global basis and that are not directly attributable to any segment.
[2]	The net cost reimbursements from Microsoft pursuant to the Search Agreement are primarily included in global operating costs.
[3]	Direct costs for each segment include cost of revenue-other as well as other operating expenses that are directly attributable to the segment such as employee compensation expense (excluding stock-based compensation expense), local sales and marketing expenses, and facilities expenses.

Capital_Expenditures_by_Segmen

Capital Expenditures by Segment (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]	'	'
Total capital expenditures, net	$84,655	$69,581
Americas	'	'
Segment Reporting Information [Line Items]	'	'
Total capital expenditures, net	63,977	65,416
EMEA	'	'
Segment Reporting Information [Line Items]	'	'
Total capital expenditures, net	15,762	2,907
Asia Pacific	'	'
Segment Reporting Information [Line Items]	'	'
Total capital expenditures, net	$4,916	$1,258

Property_and_Equipment_Net_by_

Property and Equipment Net by Segment (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	$1,479,406	$1,488,518
United States	'	'
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	1,336,609	1,346,889
Other Americas	'	'
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	1,003	1,183
Americas	'	'
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	1,337,612	1,348,072
EMEA	'	'
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	53,654	44,976
Asia Pacific	'	'
Segment Reporting Information [Line Items]	'	'
Total property and equipment, net	$88,140	$95,470

Revenues_for_Groups_of_Similar

Revenues for Groups of Similar Services (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue from External Customer [Line Items]	'	'
Display	$453,224	$455,071
Search	444,767	424,687
Other	234,739	260,610
Total revenue	1,132,730	1,140,368
United States	'	'
Revenue from External Customer [Line Items]	'	'
Total revenue	833,658	804,753
International	'	'
Revenue from External Customer [Line Items]	'	'
Total revenue	$299,072	$335,615

Recovered_Sheet7

Search Agreement with Microsoft Corporation - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Search Agreement With Microsoft Corporation [Line Items]	'	'	'
Revenue share rate from Microsoft's services under the Search Agreement, Affiliate revenue	'	88.00%	'
Revenue attributable to Search Agreement	36.00%	30.00%	'
Uncollected Search Agreement revenue	$294	'	$305
Revenue collected from Search Agreement	18	'	21
Classified as part of prepaid expenses and other current assets	0	'	5
Search Operating Costs	'	'	'
Search Agreement With Microsoft Corporation [Line Items]	'	'	'
Reimbursements for costs	'	13	'
Maximum | Search Operating Costs	'	'	'
Search Agreement With Microsoft Corporation [Line Items]	'	'	'
Reimbursements for costs	$1	'	'

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended					1 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	8-May-14	8-May-14
		Foreign Currency Derivative Contracts	Foreign Currency Derivative Contracts	Net Investment Hedging	Net Investment Hedging	Subsequent Event	Subsequent Event
				Foreign Currency Derivative Contracts	Foreign Currency Derivative Contracts		Net Investment Hedging
							Foreign Currency Derivative Contracts
Subsequent Event [Line Items]	'	'	'	'	'	'	'
Repurchases of common stock, shares	12	'	'	'	'	9	'
Repurchases of common stock, value	$450	'	'	'	'	$325	'
Average purchase price per share of common stock repurchased during the period	$37.65	'	'	'	'	$35.45	'
Derivative notional amount	'	$1,700	$1,800	$1,341	$1,341	'	$1,700
Forward and option contracts minimum maturity Period	'	'	'	'	'	'	'6 months
Forward and option contracts maximum maturity Period	'	'	'	'	'	'	'2 years