RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: (Details) (USD $)	9 Months Ended			12 Months Ended				12 Months Ended			24 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Associate-related reserves	Dec. 31, 2012 Ongoing contracts	Mar. 31, 2012 Fiscal 2011	Mar. 31, 2012 Fiscal 2012	Mar. 31, 2012 Fiscal 2012 Lease accruals	Dec. 31, 2012 Fiscal 2012 Lease accruals	Mar. 31, 2012 Fiscal 2012 Associate-related reserves	Mar. 31, 2012 Fiscal 2012 Associate-related reserves United States, Australia, Europe, and Brazil	Dec. 31, 2012 Fiscal 2012 Associate-related reserves United States, Australia, Europe, and Brazil	Mar. 31, 2009 Fiscal 2008 and 2009 Lease accruals	Dec. 31, 2012 Fiscal 2008 and 2009 Lease accruals
Restructuring activity
Balance at the beginning of the period	$ 20,646,000	$ 9,597,000	$ 11,049,000				$ 1,900,000			$ 2,900,000		$ 7,700,000
Payments	(7,986,000)	(6,414,000)	(1,572,000)
Charges and adjustments	(50,000)	(221,000)	171,000
Balance at the end of the period	12,610,000	2,962,000	9,648,000				1,900,000			2,900,000		7,700,000
Gains, Losses and Other Items
Restructuring charges				$ 300,000	$ 12,800,000	$ 2,600,000		$ 9,900,000	$ 9,900,000		$ 22,200,000