TREASURY STOCK (Details) (USD $)	1 Months Ended	3 Months Ended				12 Months Ended
	Oct. 31, 2013	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]
Additional repurchase of common stock				$ 1,000,000,000
Repurchase of common stock, excluding repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)			484,361	431,910	263,913
Repurchase of common stock, excluding repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation			459,200,000	345,500,000	166,200,000
Reacquired shares, settlement of conversion spread hedges, shares	42,160
Reacquired shares, settlement of conversion spread hedges, value		43,100,000				(19,000)
Stock repurchase program, authorized amount					200,000,000
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)						113,503	141,229	358,517
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation						78,800,000	90,800,000	163,200,000
Remaining authorization of repurchase common stock						$ 654,500,000
Treasury stock, shares		9,256,721				9,256,721	8,184,787