Quarterly report pursuant to Section 13 or 15(d)

Funds Held for Clients and Corporate Investments (Details)

v3.3.0.814
Funds Held for Clients and Corporate Investments (Details) - USD ($)
$ in Millions
Aug. 31, 2015
May. 31, 2015
Type of issue:    
Funds held for clients money market securities and other cash equivalents, Amortized cost $ 1,329.4 $ 1,430.0
Funds held for clients money market securities and other cash equivalents Gross unrealized gains 0.0 0.0
Funds held for clients money market securities and other cash equivalents Gross unrealized losses 0.0 0.0
Funds held for clients money market securities and other cash equivalents, Fair value 1,329.4 1,430.0
Available-for-sale securities:    
Amortized cost 2,878.8 3,582.0
Available-for-sale securities, Gross unrealized gain, before tax 26.8 21.1
Available-for-sale securities, Gross unrealized loss, before tax (3.3) (7.5)
Fair value 2,902.3 3,595.6
Other, Amortized cost 13.8 12.7
Other, Gross unrealized gains 1.0 1.5
Other, Gross unrealized losses (0.1) 0.0
Other, Fair value 14.7 14.2
Total funds held for clients and corporate investments, Amortized cost 4,222.0 5,024.7
Funds held for clients and corporate investments Gross unrealized gains 27.8 22.6
Funds held for clients and corporate investments Gross unrealized losses (3.4) (7.5)
Total funds held for clients and corporate investments, Fair value 4,246.4 5,039.8
Corporate bond securities [Member]    
Available-for-sale securities:    
Amortized cost 65.0  
Available-for-sale securities, Gross unrealized gain, before tax 0.1  
Available-for-sale securities, Gross unrealized loss, before tax (0.3)  
Fair value 64.8  
General obligation municipal bonds [Member]    
Available-for-sale securities:    
Amortized cost 1,708.7 1,694.0
Available-for-sale securities, Gross unrealized gain, before tax 16.7 14.0
Available-for-sale securities, Gross unrealized loss, before tax (1.9) (4.3)
Fair value 1,723.5 1,703.7
Pre-refunded municipal bonds [Member]    
Available-for-sale securities:    
Amortized cost 94.7 101.7
Available-for-sale securities, Gross unrealized gain, before tax 1.6 1.0
Available-for-sale securities, Gross unrealized loss, before tax 0.0 0.0
Fair value 96.3 102.7
Revenue municipal bonds [Member]    
Available-for-sale securities:    
Amortized cost 950.4 960.7
Available-for-sale securities, Gross unrealized gain, before tax 8.3 6.1
Available-for-sale securities, Gross unrealized loss, before tax (1.1) (3.2)
Fair value 957.6 963.6
US government agencies debt securities [Member]    
Available-for-sale securities:    
Amortized cost 37.0  
Available-for-sale securities, Gross unrealized gain, before tax 0.1  
Available-for-sale securities, Gross unrealized loss, before tax 0.0  
Fair value 37.1  
Variable rate demand notes [Member]    
Available-for-sale securities:    
Amortized cost 23.0 825.6
Available-for-sale securities, Gross unrealized gain, before tax 0.0 0.0
Available-for-sale securities, Gross unrealized loss, before tax 0.0 0.0
Fair value $ 23.0 $ 825.6