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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Net number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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STOCK-BASED COMPENSATION (Details 2) (Stock options, USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock options
Stock-based compensation
Excess tax benefit realized for tax deductions from non-qualified stock option exercises and disqualifying dispositions of incentive stock options					$ 11,900,000	$ 30,300,000	$ 19,700,000
Weighted-average assumptions used to estimate the fair value of options granted
Dividend yield (as a percent)					0.00%	0.00%	0.00%
Expected volatility (as a percent)					41.40%	47.50%	48.10%
Risk-free interest rate (as a percent)					1.55%	0.98%	0.74%
Expected term					5 years 9 months 18 days	5 years 8 months 12 days	5 years 4 months 24 days
Stock Options, Number of Shares
Balance at the beginning of the period (in shares)				12,973,000	12,973,000
Granted (in shares)	195,000	0	104,000	689,000
Exercised (in shares)					(767,000)
Cancelled or forfeited (in shares)					(128,000)
Balance at the end of the period (in shares)	13,066,000				13,066,000	12,973,000
Vested and expected to vest in the future at the end of the period (in shares)	12,670,000				12,670,000
Exercisable at the end of the period (in shares)	10,566,000				10,566,000
Stock options, Weighted-Average Exercise Price Per Share
Balance at the beginning of the period (in dollars per share)				$ 15.70	$ 15.70
Granted (in dollars per share)	$ 111.30		$ 69.15	$ 70.06
Exercised (in dollars per share)					$ 22.38
Cancelled or forfeited (in dollars per share)					$ 45.49
Balance at the end of the period (in dollars per share)	$ 19.73				$ 19.73	$ 15.70
Vested and expected to vest in the future at the end of the period (in dollars per share)	$ 18.31				$ 18.31
Exercisable at the end of the period (in dollars per share)	$ 10.24				$ 10.24
Weighted-Average Remaining Contractual Term
Balance at the beginning of the period					3 years 1 month 6 days	3 years 8 months 12 days
Balance at the end of the period					3 years 1 month 6 days	3 years 8 months 12 days
Vested and expected to vest in the future at the end of the period					2 years 10 months 24 days
Exercisable at the end of the period					1 year 9 months 18 days
Aggregate Intrinsic Value
Balance at the beginning of the period				675,595,000	675,595,000
Balance at the end of the period	1,158,412,000				1,158,412,000	675,595,000
Vested and expected to vest in the future at the end of the period	1,141,163,000				1,141,163,000
Exercisable at the end of the period	$ 1,036,675,000				$ 1,036,675,000