Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.0.6
Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
May 31, 2012
May 31, 2011
Deferred tax assets:    
Compensation and employee benefit liabilities $ 15.8 $ 16.3
Other current liabilities 6.7 9.4
Tax credit carry forward 31.7 27.4
Depreciation 8.0 6.7
Stock-based compensation 28.5 29.8
Other 17.4 18.2
Gross deferred tax assets 108.1 107.8
Deferred tax liabilities:    
Capitalized software 39.3 33.2
Depreciation 21.8 16.6
Intangible assets 36.8 32.5
Revenue not subject to current taxes 11.1 10.0
Unrealized gains on available-for-sale securities 21.8 21.7
Other 1.0 0.5
Gross deferred tax liabilities 131.8 114.5
Net deferred tax liability $ (23.7) $ (6.7)