STOCK-BASED COMPENSATION (Details) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended |
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014 | Nov. 30, 2011 | Nov. 30, 2010 | Nov. 07, 2011 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00% | 0.00% | 0.00% | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 44.53% | 54.62% | 44.67% | 54.62% | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 1.77% | 1.52% | 1.77% | 1.52% | | | | |
Stock Option Plans [Abstract] | | | | | | | | |
Weighted-average fair value at the grant date | $34.38 | $36.04 | $34.53 | $44.41 | | | | |
Options Activity [Roll Forward] | | | | | | | | |
Exercised (in shares) | | | -72,400 | | -265,365 | | | |
Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] | | | | | | | | |
Compensation related to stock option and restricted stock plans | | | $12,203,949 | $11,596,771 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 6 years 1 month 14 days | 5 years 6 months | 6 years 1 month 14 days | 5 years 6 months | | | | |
Group B Performance Award [Member] | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | |
Stock Issued During Period, Shares, Share-based Compensation, Gross | | | 56,660 | 443,700 | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | 373,360 | | | | | |
Stock Options Plans [Member] | | | | | | | | |
Stock Option Plans [Abstract] | | | | | | | | |
Shares of authorized common stock reserved for issuance (in shares) | 4,100,000 | | 4,100,000 | | | | | |
Number of shares available for grant (in shares) | 195,808 | | 195,808 | | | | | |
Options Activity [Roll Forward] | | | | | | | | |
Options outstanding, beginning of year (in shares) | | | 1,096,000 | | | | | |
Granted (in shares) | | | 192,525 | | | | | |
Exercised (in shares) | | | -72,400 | | | | | |
Forfeited (in shares) | | | -36,290 | | | | | |
Expired (in shares) | | | -750 | | | | | |
Options outstanding, end of period (in shares) | 1,179,085 | | 1,179,085 | | | | | |
Options exercisable, end of period (in shares) | 429,797 | | 429,797 | | | | | |
Weighted Average Exercise Price [Roll Forward] | | | | | | | | |
Options outstanding, beginning of year (in dollars per share) | | | $63.81 | | | | | |
Granted (in dollars per share) | | | $76.56 | | | | | |
Exercised (in dollars per share) | | | $35.08 | | | | | |
Forfeited (in dollars per share) | | | $69.06 | | | | | |
Expired (in dollars per share) | | | $67.31 | | | | | |
Options outstanding, end of period (in dollars per share) | $67.50 | | $67.50 | | | | | |
Options exercisable, end of period (in dollars per share) | $55.53 | | $55.53 | | | | | |
Stock Option Activity Additional Disclosures [Abstract] | | | | | | | | |
Weighted-average remaining contractual term, Options outstanding, end of period | | | 7 years 5 months 23 days | | | | | |
Weighted-average remaining contractual terms, Options exercisable, end of period | | | 5 years 10 months 17 days | | | | | |
Aggregate intrinsic value, Options outstanding, end of period | 16,062,563 | | 16,062,563 | | | | | |
Aggregate intrinsic value, Options exercisable, end of period | 10,651,453 | | 10,651,453 | | | | | |
Intrinsic value of options exercised | 2,534,147 | 6,821,396 | 2,973,627 | 8,972,609 | | | | |
Compensation Cost Not yet Recognized [Abstract] | | | | | | | | |
Total unrecognized stock-based compensation expense related to non-vested stock options | 19,700,000 | | 19,700,000 | | | | | |
Weighted average period for recognition | | | 3 years 6 months 20 days | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Weighted average period for recognition | | | 3 years 6 months 20 days | | | | | |
Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] | | | | | | | | |
Compensation related to stock option and restricted stock plans | 2,645,017 | 2,884,602 | 6,538,234 | 8,024,370 | | | | |
Group A Performance Award [Member] | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | |
Stock Issued During Period, Shares, Share-based Compensation, Gross | | | 8,590 | 70,800 | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | 60,390 | | | | | |
Restricted Stock [Member] | | | | | | | | |
Compensation Cost Not yet Recognized [Abstract] | | | | | | | | |
Weighted average period for recognition | | | 1 year 9 months 7 days | | | | | |
Restricted Stock [Abstract] | | | | | | | | |
Awards granted (in shares) | | | 0 | | | | | |
Grant date fair value (in dollars per share) | | | $0 | | | | | |
Ratio of restricted stock vesting immediately (in hundredths) | | | | | | 33.33% | 33.33% | |
Ratio of restricted stock vesting after year one (in hundredths) | | | | | | 33.33% | 33.33% | |
Ratio of restricted stock vesting after year two (in hundredths) | | | | | | 33.33% | 33.33% | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options | 11,900,000 | | 11,900,000 | | | | | |
Weighted average period for recognition | | | 1 year 9 months 7 days | | | | | |
Summary of the status and changes in restricted stock [Roll Forward] | | | | | | | | |
Outstanding at March 31, 2012 (in shares) | | | 461,959 | | | | | |
Vested during the period, net of cancellations (in shares) | | | -12,615 | | | | | |
Outstanding at June 30, 2012 (in shares) | 433,750 | | 433,750 | | | | | |
Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] | | | | | | | | |
Outstanding at March 31, 2012 (in dollars per share) | | | $76.49 | | | | | |
Grant date fair value (in dollars per share) | | | $0 | | | | | |
Vested during the period, net of cancellations (in dollars per share) | | | $67.70 | | | | | |
Cancelled during the period (in dollars per share) | | | $73.84 | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited | | | -15,594 | | | | | |
Outstanding at June 30, 2012 (in dollars per share) | $76.84 | | $76.84 | | | | | |
Compensation related to stock option and restricted stock plans | 2,018,775 | 257,758 | 5,969,533 | 4,364,474 | | | | |
Restricted Stock [Member] | 15% or higher [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 100.00% | | | | | |
Restricted Stock [Member] | 12% - 14.99% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 67.00% | | | | | |
Restricted Stock [Member] | 10% - 11.99% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 33.00% | | | | | |
Restricted Stock [Member] | Below 10% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 0.00% | | | | | |
Restricted Stock [Member] | Vesting Percentage 100% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Compounded Annual EPS Growth, Minimum (in hundredths) | | | 15.00% | 15.00% | | | | |
Restricted Stock [Member] | Vesting Percentage 67% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Compounded Annual EPS Growth, Minimum (in hundredths) | | | 12.00% | 12.00% | | | | |
Compounded Annual EPS Growth, Maximum (in hundredths) | | | 14.99% | 14.99% | | | | |
Restricted Stock [Member] | Vesting Percentage 33% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Compounded Annual EPS Growth, Minimum (in hundredths) | | | 10.00% | 10.00% | | | | |
Compounded Annual EPS Growth, Maximum (in hundredths) | | | 11.99% | 11.99% | | | | |
Restricted Stock [Member] | Vesting Percentage 0% [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Compounded Annual EPS Growth, Maximum (in hundredths) | | | 10.00% | 10.00% | | | | |
Restricted Stock [Member] | Service Based Award [Member] | Officers [Member] | | | | | | | | |
Summary of the status and changes in restricted stock [Roll Forward] | | | | | | | | |
Awards granted (in shares) | | | | | | | | 24,200 |
Restricted Stock [Member] | Service Based Award [Member] | Executive Officers [Member] | | | | | | | | |
Restricted Stock [Abstract] | | | | | | | | |
Grant date fair value (in dollars per share) | | | | | | | | 67.7 |
Summary of the status and changes in restricted stock [Roll Forward] | | | | | | | | |
Awards granted (in shares) | | | | | | | | 15,077 |
Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] | | | | | | | | |
Grant date fair value (in dollars per share) | | | | | | | | 67.7 |
Restricted Stock [Member] | Performance Based Awards [Member] | Executive Officers [Member] | | | | | | | | |
Summary of the status and changes in restricted stock [Roll Forward] | | | | | | | | |
Awards granted (in shares) | | | | | | | | 11,139 |
Vested during the period, net of cancellations (in shares) | | | | -3,249 | -5,223 | | | |
Restricted Stock [Member] | EPS Target [Member] | $10.29 EPS [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 100.00% | | | | | |
EPS Target | | | 10.29 | | | | | |
Restricted Stock [Member] | EPS Target [Member] | $9.76 EPS [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 67.00% | | | | | |
EPS Target | | | 9.76 | | | | | |
Restricted Stock [Member] | EPS Target [Member] | $9.26 EPS [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 33.00% | | | | | |
EPS Target | | | 9.26 | | | | | |
Restricted Stock [Member] | EPS Target [Member] | Below $9.26 EPS [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 0.00% | | | | | |
Restricted Stock [Member] | Trailing Four Quarter EPS Target [Member] | $13.00 [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 25.00% | | | | | |
EPS Target | | | 13 | | | | | |
Restricted Stock [Member] | Trailing Four Quarter EPS Target [Member] | $14.50 [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 25.00% | | | | | |
EPS Target | | | 14.5 | | | | | |
Restricted Stock [Member] | Trailing Four Quarter EPS Target [Member] | $16.00 [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 25.00% | | | | | |
EPS Target | | | 16 | | | | | |
Restricted Stock [Member] | Trailing Four Quarter EPS Target [Member] | $18.00 [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Vesting Percentage (in hundredths) | | | 25.00% | | | | | |
EPS Target | | | 18 | | | | | |
Equity Securities [Member] | | | | | | | | |
Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] | | | | | | | | |
Compensation related to stock option and restricted stock plans | 4,663,792 | 3,142,360 | 12,507,767 | 12,388,844 | | | | |
Performance Shares [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
Unrecognized compensation cost related to unvested restricted stock awards granted | 6,700,000 | | 6,700,000 | | | | | |
Maximum [Member] | Stock Options Plans [Member] | | | | | | | | |
Stock Option Plans [Abstract] | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | 10 years | | | | | |
Vesting period | | | 5 years | | | | | |
Maximum [Member] | Restricted Stock [Member] | EPS Target [Member] | Below $9.26 EPS [Member] | | | | | | | | |
Schedule of vesting of restricted shares on basis of compounded annual EPS growth [Abstract] | | | | | | | | |
EPS Target | | | $9.26 | | | | | |