This element represents the estimated aggregate value of additional shares that the entity would be required to pay in the event that all or substantially all of the entity's common stock is acquired on or prior to the maturity of the specified convertible notes in a transaction in which the consideration paid to holders of the entity's common stock consists of all or substantially all cash.

No definition available.

DEBT (Narrative) (Details)	12 Months Ended						1 Months Ended	12 Months Ended			1 Months Ended			12 Months Ended			1 Months Ended			12 Months Ended			1 Months Ended			12 Months Ended	1 Months Ended		12 Months Ended			1 Months Ended			1 Months Ended							1 Months Ended				12 Months Ended
DEBT (Narrative) (Details)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 Convertible Notes USD ($)	Dec. 31, 2013 Convertible Notes USD ($)	Dec. 31, 2012 Convertible Notes USD ($)	Mar. 31, 2010 Convertible Debt 1.25 Percent Due March 2015 USD ($)	Dec. 31, 2014 Convertible Debt 1.25 Percent Due March 2015 USD ($)	Dec. 31, 2013 Convertible Debt 1.25 Percent Due March 2015 USD ($)	Dec. 31, 2010 Convertible Debt 1.25 Percent Due March 2015 USD ($)	Mar. 31, 2010 Convertible Debt 1.25 Percent Due March 2015 Minimum	Mar. 31, 2010 Convertible Debt 1.25 Percent Due March 2015 Maximum	Mar. 31, 2012 1.00% Convertible Senior Notes Due March 2018 USD ($)	Dec. 31, 2012 1.00% Convertible Senior Notes Due March 2018 USD ($)	Dec. 31, 2014 1.00% Convertible Senior Notes Due March 2018 USD ($)	Dec. 31, 2013 1.00% Convertible Senior Notes Due March 2018 USD ($)	Mar. 31, 2012 1.00% Convertible Senior Notes Due March 2018 Minimum USD ($)	Mar. 31, 2012 1.00% Convertible Senior Notes Due March 2018 Maximum USD ($)	May 31, 2013 0.35% Senior Convertible Notes Due June 2020 USD ($)	Dec. 31, 2014 0.35% Senior Convertible Notes Due June 2020 USD ($)	Dec. 31, 2013 0.35% Senior Convertible Notes Due June 2020 USD ($)	Jun. 30, 2013 0.35% Senior Convertible Notes Due June 2020 USD ($)	May 31, 2013 0.35% Senior Convertible Notes Due June 2020 Minimum USD ($)	May 31, 2013 0.35% Senior Convertible Notes Due June 2020 Maximum USD ($)	Aug. 31, 2014 0.9% Senior Convertible Notes Due September 2021 USD ($)	Dec. 31, 2014 0.9% Senior Convertible Notes Due September 2021 USD ($)	Aug. 31, 2014 0.9% Senior Convertible Notes Due September 2021 Minimum USD ($)	Aug. 31, 2014 0.9% Senior Convertible Notes Due September 2021 Maximum USD ($)	Dec. 31, 2014 2.375% Senior Notes Due September 2024 USD ($)	Dec. 31, 2014 2.375% Senior Notes Due September 2024 EUR (€)	Sep. 30, 2014 2.375% Senior Notes Due September 2024 EUR (€)	Oct. 31, 2011 Revolving Credit Facility USD ($)	Dec. 31, 2014 Revolving Credit Facility USD ($)	Dec. 31, 2013 Revolving Credit Facility USD ($)	Oct. 31, 2011 Revolving Credit Facility Minimum	Oct. 31, 2011 Revolving Credit Facility Maximum	Oct. 31, 2011 Revolving Credit Facility Rate 2C Minimum	Oct. 31, 2011 Revolving Credit Facility Rate 2C Maximum	Oct. 31, 2011 Letter of Credit USD ($)	Oct. 31, 2011 Swingline Loans USD ($)	Jul. 24, 2014 OpenTable Revolving Credit Facility USD ($)	Oct. 31, 2011 London Interbank Offered Rate (LIBOR) Revolving Credit Facility Rate 1 Minimum	Oct. 31, 2011 London Interbank Offered Rate (LIBOR) Revolving Credit Facility Rate 1 Maximum	Oct. 31, 2011 Federal Funds Purchased Revolving Credit Facility Rate 2B	Oct. 31, 2011 One Month LIBOR Revolving Credit Facility Rate 2C	Dec. 31, 2014 Convertible Debt 1.25 Percent Due March 2015 USD ($)	Dec. 31, 2013 Convertible Debt 1.25 Percent Due March 2015	Dec. 31, 2014 Convertible Debt Converted Debt USD ($)	Dec. 31, 2013 Convertible Debt Converted Debt USD ($)
Debt Instrument
Revolving credit facility																																$ 1,000,000,000.0							$ 100,000,000.0	$ 50,000,000.0
Period of revolving credit facility (in years)																																5 years
Debt Instrument, Basis Spread on Variable Rate																																					0.00%	0.50%				1.00%	1.50%	0.50%	1.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																																			0.10%	0.25%
Carrying Value	3,849,756,000us-gaap_LongTermDebt	1,742,047,000us-gaap_LongTermDebt													925,166,000	903,203,000				861,886,000	838,844,000					863,701,000			1,199,003,000				0	0							995,000,000
Letters of Credit Outstanding, Amount	4,000,000	2,200,000
Interest rate stated percentage (as a percent)							1.25%	1.25%	1.25%				1.00%		1.00%	1.00%			0.35%	0.35%	0.35%				0.90%	0.90%			2.375%		2.375%
Reclassification Adjustment for Convertible Debt in Mezzanine								300,000	8,500,000
Estimated market value of outstanding senior notes	4,800,000,000us-gaap_DebtInstrumentFairValue	3,100,000,000us-gaap_DebtInstrumentFairValue
Cash repayment of principal amount of convertible debt								122,900,000	414,600,000
Shares issued in satisfaction of conversion value in excess of principal amount (in shares)																																														300,256	972,235
Cash paid in satisfaction of conversion value in excess of principal amount																																														2,200,000
Debt Instrument, Face Amount							575,000,000						1,000,000,000						1,000,000,000						1,000,000,000					1,000,000,000	1,000,000,000
Unamortized Debt Discount	360,312,000	257,953,000						329,000	8,533,000						74,834,000	96,797,000			20,000,000	138,114,000	161,156,000					136,299,000			11,065,000		9,400,000
Debt financing costs paid										13,300,000				20,900,000							1,000,000					11,000,000			6,500,000
Debt Instrument, Convertible, Conversion Price							$ 303.06						$ 944.61						$ 1,315.10						$ 2,055.50
Debt Instrument, Convertible, Threshold Consecutive Trading Days											20 days	30 days					20 days	30 days					20 days	30 days			20 days	30 days
Ratio of closing share price to conversion price as a condition for conversion of convertible 2015 Senior Notes, minimum (as a percent)							150.00%						150.00%						150.00%						150.00%
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares																	0	344,000,000					0	397,000,000			0	375,000,000
Effective interest rate at debt origination or modification (as a percent)							5.89%						3.50%						3.13%						3.18%
Debt discount related to convertible notes, net of tax							69,100,000						80,900,000									92,400,000				82,500,000
Debt discount related to convertible notes, before tax							115,200,000						135,200,000									154,300,000				142,900,000
Finance costs related to convertible notes, net of tax							1,600,000						2,800,000									100,000				1,600,000
Interest expense related to Senior Notes				75,300,000	78,200,000	59,400,000																							8,600,000
Contractual coupon interest related to convertible notes included in interest expense				17,100,000	17,700,000	15,200,000
Amortization of debt discount included in interest expense	54,731,000	55,718,000	39,820,000	54,400,000	55,700,000	39,800,000														2,600,000	1,500,000
Amortization of debt issuance costs included in interest expense				3,800,000	4,800,000	4,400,000
Unamortized debt issuance costs written off to interest expense related to debt conversions																																																500,000	2,400,000
Debt Instrument, Interest Rate During Period				3.50%	4.50%	4.80%																							2.50%
Losses on extinguishment of debt, pretax	(6,270,000)	(26,661,000)	0	6,300,000	26,700,000
Losses on extinguishment of debt, net of tax				$ 3,800,000	$ 16,200,000