FAIR VALUE MEASUREMENT OF ASSETS AND LIABILITIES (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Level 1 | 4.625% Notes due February 2020
Other financial instruments
Debt instrument interest rate (as a percent)	4.625%	4.625%
Level 1 | 5.000% Notes due February 2023
Other financial instruments
Debt instrument interest rate (as a percent)	5.00%	5.00%
Carrying Amount
Other financial instruments
Fair Value	2,077,500	2,100,000
Carrying Amount | Level 1 | Term Loan, including current portion, due in installments through August 2018
Other financial instruments
Fair Value	596,250	600,000
Carrying Amount | Level 1 | Term Loan, including current portion, due in installments through March 2019
Other financial instruments
Fair Value	481,250	500,000
Carrying Amount | Level 1 | 4.625% Notes due February 2020
Other financial instruments
Fair Value	500,000	500,000
Carrying Amount | Level 1 | 5.000% Notes due February 2023
Other financial instruments
Fair Value	500,000	500,000
Total
Other financial instruments
Fair Value	2,095,969	2,111,278
Total | Level 1 | Term Loan, including current portion, due in installments through August 2018
Other financial instruments
Fair Value	584,701	591,750
Total | Level 1 | Term Loan, including current portion, due in installments through March 2019
Other financial instruments
Fair Value	472,828	497,190
Total | Level 1 | 4.625% Notes due February 2020
Other financial instruments
Fair Value	511,560	504,688
Total | Level 1 | 5.000% Notes due February 2023
Other financial instruments
Fair Value	526,880	517,650