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- Definition

Acquisition date fair value per share of assumed employee stock options

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No definition available.

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As of the balance sheet date, the estimated number of probable shares to be issued at the end of the performance period under performance share units.

+ References

No definition available.

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- Definition

The fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

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- Definition

As of the balance sheet date, the number of probable shares to be issued at the end of the performance period under performance share units on meeting the defined performance thresholds.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Number Of Shares To Be Issued On Meeting Performance Thresholds, Minimum

+ References

No definition available.

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- Definition

ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedinPeriodNumberOfShares

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

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

+ References

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- Definition

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

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- Definition

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

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- Definition

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

+ References

No definition available.

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- Definition

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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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

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

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STOCK-BASED EMPLOYEE COMPENSATION (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 54,008	$ 38,803
Restricted Stock Units and Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized estimated compensation expense, unvested share-based awards	$ 402,300
Total future compensation cost related to unvested share-based awards, expected period of recognition	2 years 7 months
Granted (in shares)	156,721
Granted (in dollars per share)	$ 1,242.03
Unvested at March 31, 2015	591,237		570,315
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	67,886
Vesting period (in years)	3 years
Grant date fair value	$ 84,300
Granted (in dollars per share)	$ 1,242.03
Performance Share Units 2015 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	88,835
Grant date fair value	$ 110,300
Granted (in dollars per share)	$ 1,242.03
Estimated number of probable shares to be issued (in shares)	88,835
Maximum shares that could be issued (in shares)	207,864
Minimum shares that could be issued (in shares)	37,223
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Performance Share Units 2014 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			72,277
Grant date fair value			$ 96,100
Granted (in dollars per share)			$ 1,329.11
Estimated number of probable shares to be issued (in shares)	111,532
Maximum shares that could be issued (in shares)	142,904
Minimum shares that could be issued (in shares)	49,731
Unvested at March 31, 2015	70,688
Performance Share Units 2013 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				104,865
Grant date fair value				$ 74,400
Granted (in dollars per share)				$ 709.74
Estimated number of probable shares to be issued (in shares)	193,478
Maximum shares that could be issued (in shares)	221,694
Minimum shares that could be issued (in shares)	39,401
Unvested at March 31, 2015	101,407
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 7,400	4,100
Total future compensation cost related to unvested share-based awards, expected period of recognition	1 year 6 months
Exercised (in shares)	21,602
Exercised (in dollars per share)	$ 391.00
Stock options exercised, total intrinsic value	$ 17,000	$ 26,500
Ending balance (in shares)	125,073.000		146,385
Weighted Average Exercise Price (in dollars per share)	$ 373.03		$ 380.05
Weighted Average Remaining Contractual Term, Exercisable	5 years 5 months
Aggregate Intrinsic Value	$ 98,948		$ 111,277
Share Based Compensation Arrangement By Share Based Payment Award Options Vested in Period Number Of Shares	11,170	9,478
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 7,500	$ 4,100
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	29,800
Awards assumed in acquisitions [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Acquisition date fair value of assumed options	$ 1,400
Acquisition date fair value per share of assumed stock options	$ 1,015.81