Quarterly report pursuant to Section 13 or 15(d)

Funds Held for Clients and Corporate Investments (Details)

v2.4.0.8
Funds Held for Clients and Corporate Investments (Details) (USD $)
In Millions, unless otherwise specified
Feb. 28, 2014
May 31, 2013
Type of issue:    
Funds held for clients money market securities and other cash equivalents, Amortized cost $ 2,507.4 $ 1,137.7
Funds held for clients money market securities and other cash equivalents, Gross unrealized gains 0 0
Funds held for clients money market securities and other cash equivalents, Gross unrealized losses 0 0
Funds held for clients money market securities and other cash equivalents, Fair value 2,507.4 1,137.7
Available-for-sale securities:    
Amortized cost 3,050.3 3,656.7
Gross unrealized gains 43.1 40.4
Gross unreailzed losses (3.9) (5.7)
Fair value 3,089.5 3,691.4
Other, Amortized cost 10.4 9.5
Other, Gross unrealized gains 1.7 1.2
Other, Gross unrealized losses 0 0
Other, Fair value 12.1 10.7
Total funds held for clients and corporate investments, Amortized cost 5,568.1 4,803.9
Total funds held for clients and corporate investments, Gross unrealized gains 44.8 41.6
Total funds held for clients and corporate investments, Gross unrealized losses (3.9) (5.7)
Total funds held for clients and corporate investments, Fair value 5,609.0 4,839.8
General obligation municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 1,623.2 1,432.9
Gross unrealized gains 28.8 27.4
Gross unreailzed losses (2.5) (3.5)
Fair value 1,649.5 1,456.8
Pre-refunded municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 124.1 [1] 201.0 [1]
Gross unrealized gains 2.1 [1] 2.9 [1]
Gross unreailzed losses 0 [1] 0 [1]
Fair value 126.2 [1] 203.9 [1]
Revenue municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 837.5 746.1
Gross unrealized gains 12.2 10.1
Gross unreailzed losses (1.4) (2.2)
Fair value 848.3 754.0
Variable rate demand notes [Member]
    
Available-for-sale securities:    
Amortized cost 465.5 1,276.7
Gross unrealized gains 0 0
Gross unreailzed losses 0 0
Fair value $ 465.5 $ 1,276.7
[1] Pre-refunded municipal bonds are secured by an escrow fund of U.S. government obligations.