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Financing Arrangements (8.0% Senior Notes) (Details) (USD $)
12 Months Ended 0 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Jul. 14, 2010
8.0% Senior Unsecured Notes [Member]
Jan. 29, 2010
8.0% Senior Unsecured Notes [Member]
Subsidiaries
Jun. 30, 2013
8.0% Senior Unsecured Notes [Member]
Jun. 14, 2011
8.0% Senior Unsecured Notes [Member]
May 07, 2010
8.0% Senior Unsecured Notes [Member]
Jun. 30, 2013
8.0% Senior Unsecured Notes [Member]
Prior to February 1, 2013 [Member]
Jun. 30, 2013
8.0% Senior Unsecured Notes [Member]
Prior to February 1, 2014 [Member]
Debt Instrument [Line Items]                    
Number of subsidiaries issuing debt         2          
Face amount of notes issued       $ 225,000,000 $ 950,000,000          
Cash proceeds from issuance of notes 300,000,000 452,200,000 1,011,200,000 216,600,000 936,300,000          
Stated interest rate for notes       8.00% 8.00% 8.00% 8.00% 8.00%    
Discount amount of notes issued       $ 8,400,000 $ 13,700,000          
Maximum percentage of senior unsecured notes for redemption                 35.00%  
Redemption price of notes                 108.00% 100.00%
Offering price as percentage of principal amount       96.25%