Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event (Details)

v2.4.0.6
Subsequent Event (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 1 Months Ended 3 Months Ended
Jul. 31, 2012
$600 five-year senior unsecured revolving credit facility
Y
Jul. 27, 2012
$600 five-year senior unsecured revolving credit facility
Jun. 30, 2012
$400 revolving credit facility (excludes outstanding letters of credit)
Sep. 30, 2011
$400 revolving credit facility (excludes outstanding letters of credit)
Jul. 31, 2012
Five-year senior unsecured revolving credit facility
$600 five-year senior unsecured revolving credit facility
Y
Jun. 30, 2012
Five-year senior unsecured revolving credit facility
$600 five-year senior unsecured revolving credit facility
Jul. 27, 2012
Five-year senior unsecured revolving credit facility
$600 five-year senior unsecured revolving credit facility
Jul. 27, 2012
Five-year senior unsecured revolving credit facility
$400 revolving credit facility (excludes outstanding letters of credit)
Subsequent event                
Maximum borrowing capacity available under the facility   $ 600.0 $ 400.0 $ 400.0     $ 600.0 $ 400.0
Credit facility initial term (in years) 5       5      
Interest rate (as a percent)           1.30%    
Basis for variable rates           Libor    
Interest rate spread over basis (as a percent)           1.25%    
Deferred financing costs             $ 2.7