Fair Value Measurements (Tables)
9 Months Ended
Feb. 28, 2014
Fair Value Disclosures [Abstract]  
Fair value of assets and liabilities measured on recurring basis
The following table provides information by level for assets and liabilities that are measured at fair value on a recurring basis at February 28, 2014 and May 31, 2013:
 
 
 
Fair Value Measurements
 
Fair Value at
February 28, 2014
 
Using Inputs Considered as
(in millions)
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
Money market funds
$
110.8

 
$
110.8

 
$

 
$

Time deposits
17.0

 

 
17.0

 

Greek bonds
7.7

 

 
7.7

 

Pension plan assets
147.6

 

 
147.6

 

Foreign currency exchange contracts
0.9

 

 
0.9

 

Equity securities
2.3

 
2.2

 

 
0.1

Total assets
$
286.3

 
$
113.0

 
$
173.2

 
$
0.1

Liabilities:
 
 
 
 
 
 
 
Interest rate swaps
$
22.4

 
$

 
$
22.4

 
$

Foreign currency exchange contracts
0.1

 

 
0.1

 

Total liabilities
$
22.5

 
$

 
$
22.5

 
$

 
 
 
 
 
 
 
 
 
 
 
Fair Value Measurements
 
Fair Value at
May 31, 2013
 
Using Inputs Considered as
(in millions)
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
Money market funds
$
93.1

 
$
93.1

 
$

 
$

Time deposits
31.5

 

 
31.5

 

Greek bonds
5.6

 

 
5.6

 

Pension plan assets
137.6

 

 
137.6

 

Foreign currency exchange contracts
0.5

 

 
0.5

 

Equity securities
1.4

 
1.3

 

 
0.1

Total assets
$
269.7

 
$
94.4

 
$
175.2

 
$
0.1

Liabilities:
 
 
 
 
 
 
 
Interest rate swaps
$
54.1

 
$

 
$
54.1

 
$

Foreign currency exchange contracts
0.6

 

 
0.6

 

Total liabilities
$
54.7

 
$

 
$
54.7

 
$