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
Aug. 31, 2013
May 31, 2013
Type of issue:    
Funds held for clients money market securities and other cash equivalents, Amortized cost $ 1,404.8 $ 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 1,404.8 1,137.7
Available-for-sale securities:    
Amortized cost 3,316.7 3,656.7
Gross unrealized gains 26.8 40.4
Gross unreailzed losses (35.0) (5.7)
Fair value 3,308.5 3,691.4
Other, Amortized cost 10.5 9.5
Other, Gross unrealized gains 1.2 1.2
Other, Gross unrealized losses (0.1) 0
Other, Fair value 11.6 10.7
Total funds held for clients and corporate investments, Amortized cost 4,732.0 4,803.9
Total funds held for clients and corporate investments, Gross unrealized gains 28.0 41.6
Total funds held for clients and corporate investments, Gross unrealized losses (35.1) (5.7)
Total funds held for clients and corporate investments, Fair value 4,724.9 4,839.8
General obligation municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 1,603.7 1,432.9
Gross unrealized gains 18.8 27.4
Gross unreailzed losses (22.1) (3.5)
Fair value 1,600.4 1,456.8
Pre-refunded municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 129.3 [1] 201.0 [1]
Gross unrealized gains 2.1 [1] 2.9 [1]
Gross unreailzed losses 0 [1] 0 [1]
Fair value 131.4 [1] 203.9 [1]
Revenue municipal bonds [Member]
    
Available-for-sale securities:    
Amortized cost 837.8 746.1
Gross unrealized gains 5.9 10.1
Gross unreailzed losses (12.9) (2.2)
Fair value 830.8 754.0
Variable rate demand notes [Member]
    
Available-for-sale securities:    
Amortized cost 745.9 1,276.7
Gross unrealized gains 0 0
Gross unreailzed losses 0 0
Fair value $ 745.9 $ 1,276.7
[1] Pre-refunded municipal bonds are secured by an escrow fund of U.S. government obligations.