Derivative Instruments And Other Hedging Activities (Schedule Of Outstanding Derivative Instruments) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Designated As Hedging Instrument [Member]
Derivative Instruments And Hedging Activities [Line Items]
Asset Derivatives Fair Value		$ 13,774
Liability Derivatives Fair Value	4,836
Not Designated As Hedging Instrument [Member]
Derivative Instruments And Hedging Activities [Line Items]
Asset Derivatives Fair Value	36,458	26,909
Liability Derivatives Fair Value	36,457	26,909
Interest Rate Contract [Member] | Designated As Hedging Instrument [Member]
Derivative Instruments And Hedging Activities [Line Items]
Asset Derivatives Fair Value		13,774
Liability Derivatives Fair Value	4,836
Interest Rate Contract [Member] | Not Designated As Hedging Instrument [Member]
Derivative Instruments And Hedging Activities [Line Items]
Asset Derivatives Fair Value	27,131	18,795
Liability Derivatives Fair Value	27,130	18,795
Written And Purchased Options [Member] | Not Designated As Hedging Instrument [Member]
Derivative Instruments And Hedging Activities [Line Items]
Asset Derivatives Fair Value	9,327	8,114
Liability Derivatives Fair Value	$ 9,327	$ 8,114