DEBT (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jun. 30, 2015 EUR (€)	Mar. 13, 2015 USD ($)	Mar. 03, 2015 EUR (€)	Dec. 31, 2014 EUR (€)	Sep. 23, 2014 EUR (€)	Aug. 20, 2014 USD ($)	May. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2010 USD ($)
Debt Instrument
Amortization of debt discount			$ 33,211,000	$ 24,259,000
Total Carrying Value of Long-Term Debt	$ 5,399,966,000		5,399,966,000		$ 3,849,756,000
Gains (Losses) on Extinguishment of Debt			(3,000)	(6,129,000)
Outstanding Principal Amount	5,728,164,000		5,728,164,000		4,210,068,000
Unamortized Debt Discount	(328,198,000)		(328,198,000)		(360,312,000)
Convertible Notes [Member]
Debt Instrument
Amortization of debt discount	16,300,000	$ 11,800,000	32,700,000	24,200,000
Gains (Losses) on Extinguishment of Debt		(2,700,000)		(6,100,000)
Extinguishment of Debt, Gain (Loss), Net of Tax		(1,600,000)		(3,700,000)
Interest expense related to debt	23,000,000	16,400,000	46,300,000	33,400,000
Contractual coupon interest related to debt included in interest expense	5,600,000	3,500,000	11,400,000	7,000,000
Amortization of debt issuance costs	1,100,000	1,100,000	2,200,000	2,200,000
1.25% Convertible Senior Notes due March 2015 [Member]
Debt Instrument
Short-term Debt, Gross					37,524,000
Short-term Debt					37,195,000
Unamortized Debt Discount					$ (329,000)
Interest rate on Long-term Debt					1.25%						1.25%					1.25%
Aggregate Principal Amount																$ 575,000,000
1.00% Convertible Senior Notes Due March 2018 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	936,438,000		936,438,000		$ 925,166,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (63,562,000)		$ (63,562,000)		$ (74,834,000)
Interest rate on Long-term Debt	1.00%		1.00%		1.00%			1.00%			1.00%				1.00%
Aggregate Principal Amount															$ 1,000,000,000
Debt financing costs paid							$ 20,900,000
Effective interest rate at debt origination or modification															3.50%
0.35 % Convertible Senior Notes Due June 2020 [Member]
Debt Instrument
Amortization of debt discount	$ 700,000	$ 700,000	$ 1,400,000	$ 1,300,000
Total Carrying Value of Long-Term Debt	873,679,000		873,679,000		$ 861,886,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (126,321,000)		$ (126,321,000)		$ (138,114,000)									$ (20,000,000)
Interest rate on Long-term Debt	0.35%		0.35%		0.35%			0.35%			0.35%			0.35%
Aggregate Principal Amount														$ 1,000,000,000
Debt financing costs paid						$ 1,000,000
Effective interest rate at debt origination or modification														3.13%
0.9% Convertible Senior Notes Due September 2021 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 873,012,000		$ 873,012,000		$ 863,701,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (126,988,000)		$ (126,988,000)		$ (136,299,000)
Interest rate on Long-term Debt	0.90%		0.90%		0.90%			0.90%			0.90%		0.90%
Aggregate Principal Amount													$ 1,000,000,000
Debt financing costs paid					$ 11,000,000
Effective interest rate at debt origination or modification													3.18%
2.375% Senior Notes Due September 2024 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 1,104,361,000		$ 1,104,361,000		1,199,003,000
Outstanding Principal Amount	1,114,082,000		1,114,082,000		1,210,068,000
Unamortized Debt Discount	$ (9,721,000)		$ (9,721,000)		$ (11,065,000)							€ (9,400,000)
Interest rate on Long-term Debt	2.375%		2.375%		2.375%			2.375%			2.375%	2.375%
Aggregate Principal Amount | €								€ 1,000,000,000			€ 1,000,000,000	€ 1,000,000,000
Debt financing costs paid					$ 6,500,000
Effective interest rate at debt origination or modification												2.48%
3.65% Senior Notes Due March 2025 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 498,742,000		$ 498,742,000
Outstanding Principal Amount	500,000,000		500,000,000
Unamortized Debt Discount	$ (1,258,000)		$ (1,258,000)						$ (1,300,000.0)
Interest rate on Long-term Debt	3.65%		3.65%					3.65%	3.65%
Aggregate Principal Amount									$ 500,000,000
Debt financing costs paid			$ 3,200,000
Effective interest rate at debt origination or modification									3.68%
1.8% Senior Notes Due March 2027 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 1,113,734,000		1,113,734,000
Outstanding Principal Amount	1,114,082,000		1,114,082,000
Unamortized Debt Discount	$ (348,000)		$ (348,000)							€ (300,000.0)
Interest rate on Long-term Debt	1.80%		1.80%					1.80%		1.80%
Aggregate Principal Amount | €								€ 1,000,000,000		€ 1,000,000,000
Debt financing costs paid			$ 6,300,000
Effective interest rate at debt origination or modification										1.80%
Other Long-term Debt [Member]
Debt Instrument
Amortization of debt discount	$ 200,000		500,000
Interest expense related to debt	16,700,000		26,200,000
Contractual coupon interest related to debt included in interest expense	16,100,000		25,100,000
Amortization of debt issuance costs	$ 400,000		$ 600,000
Convertible Debt Liability [Member]
Debt Instrument
Debt, Weighted Average Interest Rate	3.40%	3.60%	3.40%	3.60%
Convertible Debt Converted Debt [Member]
Debt Instrument
Charge off of deferred debt issuance cost		$ 200,000		$ 500,000