Quarterly report pursuant to Section 13 or 15(d)

Funds Held for Clients and Corporate Investments (Details 1)

v3.3.1.900
Funds Held for Clients and Corporate Investments (Details 1) - USD ($)
$ in Millions
Nov. 30, 2015
May. 31, 2015
Classification of investments on the Consolidated Balance Sheets    
Funds held for clients $ 3,720.1 $ 4,273.4
Corporate investments 64.1 366.6
Long-term corporate investments 436.5 399.8
Total funds held for clients and corporate investments, Fair value 4,220.7 5,039.8
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses (0.9) (7.0)
Less than twelve months, Fair value 227.3 896.7
Twelve months or longer, Gross unrealized losses (0.3) (0.5)
Twelve months or longer, Fair value 25.5 26.3
Total, Gross unrealized losses (1.2) (7.5)
Total, Fair value 252.8 923.0
Corporate bonds [Member]    
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses (0.1)  
Less than twelve months, Fair value 19.6  
Twelve months or longer, Gross unrealized losses 0.0  
Twelve months or longer, Fair value 0.0  
Total, Gross unrealized losses (0.1)  
Total, Fair value 19.6  
General obligation municipal bonds [Member]    
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses (0.2) (3.8)
Less than twelve months, Fair value 88.5 535.1
Twelve months or longer, Gross unrealized losses (0.3) (0.5)
Twelve months or longer, Fair value 24.0 26.3
Total, Gross unrealized losses (0.5) (4.3)
Total, Fair value 112.5 561.4
Pre-refunded municipal bonds [Member]    
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses 0.0  
Less than twelve months, Fair value 5.7  
Twelve months or longer, Gross unrealized losses 0.0  
Twelve months or longer, Fair value 0.0  
Total, Gross unrealized losses 0.0  
Total, Fair value 5.7  
Revenue municipal bonds [Member]    
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses (0.5) (3.2)
Less than twelve months, Fair value 77.8 361.6
Twelve months or longer, Gross unrealized losses 0.0 0.0
Twelve months or longer, Fair value 1.5 0.0
Total, Gross unrealized losses (0.5) (3.2)
Total, Fair value 79.3 $ 361.6
U.S. government agency securities [Member]    
Securities in an unrealized loss position    
Less than twelve months, Gross unrealized losses (0.1)  
Less than twelve months, Fair value 35.7  
Twelve months or longer, Gross unrealized losses 0.0  
Twelve months or longer, Fair value 0.0  
Total, Gross unrealized losses (0.1)  
Total, Fair value $ 35.7