EQUITY (Shares Purchased And Retired) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended		12 Months Ended
		Apr. 30, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Subsequent Event [Line Items]
Shares Purchased and Retired, Number	[1]		492	417	510
Shares Purchased and Retired, Total purchase price	[1]		$ 57,824	$ 49,221	$ 60,303
Shares Purchased and Retired, Average price per share			$ 117.47	$ 118.07	$ 118.18
Subsequent Event [Member]
Subsequent Event [Line Items]
Shares Purchased and Retired, Number		20
Shares Purchased and Retired, Total purchase price		$ 2,250

[1] Settlement of 20 thousand shares at a total price of $2,250 thousand occurred after March 31, 2018.