TREASURY STOCK (Details)		12 Months Ended				14 Months Ended
	Feb. 01, 2018 USD ($) dealer shares	Mar. 31, 2021 USD ($) shares	Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 USD ($) shares	Mar. 31, 2018 USD ($) shares	Mar. 31, 2019 $ / shares shares	Jan. 16, 2018 shares	Oct. 24, 2017 shares	Oct. 23, 2017 shares
Equity, Class of Treasury Stock [Line Items]
Stock authorized to repurchase under stock repurchase program (in shares)							25,000,000
Shares repurchased during the period, value | $		$ 3,275,000	$ 175,000,000	$ 14,468,000
Stock remaining to be purchased (in shares)		7,089,160
Restricted stock units
Equity, Class of Treasury Stock [Line Items]
Shares paid for tax withholding (in shares)		506,917	519,241	451,683
Cost related to tax withholding | $		$ 13,300,000	$ 11,900,000	$ 11,900,000
Share repurchase program, October 2017
Equity, Class of Treasury Stock [Line Items]
Stock authorized to repurchase under stock repurchase program (in shares)	25,000,000			25,000,000	25,000,000	25,000,000		25,000,000
Shares repurchased during the period, value | $		$ 3,300,000	$ 175,000,000.0	$ 14,500,000
Shares repurchased during the period (in shares)		154,271	7,116,159	543,251	6,417,212
Share repurchase program, May 2015
Equity, Class of Treasury Stock [Line Items]
Stock authorized to repurchase under stock repurchase program (in shares)	20,000,000				20,000,000				20,000,000
Shares repurchased during the period (in shares)					970,650
ASR Agreements
Equity, Class of Treasury Stock [Line Items]
Number of third-party financial institutions (the Dealers) | dealer	2
Shares repurchased during the period, value | $	$ 300,000,000			$ 96,800,000
Shares repurchased during the period (in shares)				3,679,947	7,387,862	11,067,809
Treasury stock acquired value | $					$ 210,000,000.0
Average cost per share (in dollars per share) | $ / shares						$ 27.11