CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data in Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
CONSOLIDATED BALANCE SHEETS
Software, accumulated amortization (in dollars)	$ 230,161	$ 235,491
Purchased software licenses, accumulated amortization (in dollars)	$ 263,228	$ 262,169
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized shares	200	200
Common stock, issued shares	125.8	121.3
Treasury stock, shares	49.2	47.8