Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Income (Details)

v3.2.0.727
Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
12 Months Ended
May. 31, 2015
May. 31, 2014
May. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 21.5 $ 22.0 $ 37.7
Unrealized holding (losses)/gains (21.5) 0.3 (24.1)
Income tax benefit/(expense)related to unrealized holding gains/(losses) 7.7 (0.4) 9.0
Reclassification adjustment for the net gain on sale of available-for-sale securities realized in net income (0.3) (0.6) (0.9)
Income tax expense on reclassification adjustment for the net gain on sale of available-for-sale securities 0.1 0.2 0.3
Total other comprehensive loss, net of tax (14.0) (0.5) (15.7)
Ending balance 7.5 21.5 22.0
Total tax (benefit)/expense included in other comprehensive loss $ (7.8) $ 0.2 $ (9.3)