Loans (Balances Of Commercial Loan Portfolio Classes, Disaggregated By PD Grade) (Details) (USD $)	Jun. 30, 2011		Jun. 30, 2010
Total loans individually evaluated for impairment	$ 601,557,000		$ 573,138,000
Total loans collectively evaluated for impairment	15,460,089,000		16,580,912,000
Total commercial loans	8,674,000,000
PD Grade 1 [Member]
Commercial loan, Disaggregated by PD grade	110,000,000
PD Grade 1 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	110,000,000
PD Grade 2 [Member]
Commercial loan, Disaggregated by PD grade	128,000,000
PD Grade 2 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	125,000,000
PD Grade 2 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	3,000,000
PD Grade 3 [Member]
Commercial loan, Disaggregated by PD grade	182,000,000
PD Grade 3 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	169,000,000
PD Grade 3 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	13,000,000
PD Grade 4 [Member]
Commercial loan, Disaggregated by PD grade	191,000,000
PD Grade 4 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	184,000,000
PD Grade 4 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	7,000,000
PD Grade 5 [Member]
Commercial loan, Disaggregated by PD grade	317,000,000
PD Grade 5 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	300,000,000
PD Grade 5 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	17,000,000
PD Grade 6 [Member]
Commercial loan, Disaggregated by PD grade	931,000,000
PD Grade 6 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	798,000,000
PD Grade 6 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	70,000,000
PD Grade 6 [Member] | Loans to Mortgage Companies [Member]
Commercial loan, Disaggregated by PD grade	62,000,000
PD Grade 6 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	1,000,000
PD Grade 7 [Member]
Commercial loan, Disaggregated by PD grade	1,145,000,000
PD Grade 7 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	852,000,000
PD Grade 7 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	111,000,000
PD Grade 7 [Member] | Loans to Mortgage Companies [Member]
Commercial loan, Disaggregated by PD grade	179,000,000
PD Grade 7 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	3,000,000
PD Grade 8 [Member]
Commercial loan, Disaggregated by PD grade	1,565,000,000
PD Grade 8 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	1,128,000,000
PD Grade 8 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	174,000,000
PD Grade 8 [Member] | Loans to Mortgage Companies [Member]
Commercial loan, Disaggregated by PD grade	256,000,000
PD Grade 8 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	7,000,000
PD Grade 9 [Member]
Commercial loan, Disaggregated by PD grade	748,000,000
PD Grade 9 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	542,000,000
PD Grade 9 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	119,000,000
PD Grade 9 [Member] | Loans to Mortgage Companies [Member]
Commercial loan, Disaggregated by PD grade	84,000,000
PD Grade 9 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	3,000,000
PD Grade 10 [Member]
Commercial loan, Disaggregated by PD grade	583,000,000
PD Grade 10 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	435,000,000
PD Grade 10 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	146,000,000
PD Grade 10 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	2,000,000
PD Grade 11 [Member]
Commercial loan, Disaggregated by PD grade	642,000,000
PD Grade 11 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	530,000,000
PD Grade 11 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	111,000,000
PD Grade 11 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	1,000,000
PD Grade 12 [Member]
Commercial loan, Disaggregated by PD grade	121,000,000
PD Grade 12 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	99,000,000
PD Grade 12 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	17,000,000
PD Grade 12 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	5,000,000
TRUPs [Member] | PD Grade 13 [Member]
Commercial loan, Disaggregated by PD grade	329,000,000	[1]
PD Grade 13 [Member]
Commercial loan, Disaggregated by PD grade	812,000,000
PD Grade 13 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	348,000,000
PD Grade 13 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	125,000,000
PD Grade 13 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	10,000,000
TRUPs [Member] | PD Grade 14,15,16 [Member]
Commercial loan, Disaggregated by PD grade	20,000,000	[1]
PD Grade 14,15,16 [Member]
Commercial loan, Disaggregated by PD grade	802,000,000
PD Grade 14,15,16 [Member] | General C&I [Member]
Commercial loan, Disaggregated by PD grade	406,000,000
PD Grade 14,15,16 [Member] | Income CRE [Member]
Commercial loan, Disaggregated by PD grade	289,000,000
PD Grade 14,15,16 [Member] | Loans to Mortgage Companies [Member]
Commercial loan, Disaggregated by PD grade	1,000,000
PD Grade 14,15,16 [Member] | Residential CRE [Member]
Commercial loan, Disaggregated by PD grade	86,000,000
TRUPs [Member] | Commercial Loan [Member]
Total loans individually evaluated for impairment	80,000,000	[1]
Total loans collectively evaluated for impairment	349,000,000	[1]
Commercial Loan [Member]
Total loans individually evaluated for impairment	397,000,000
Total loans collectively evaluated for impairment	8,277,000,000
Commercial Loan [Member] | General C&I [Member]
Total loans individually evaluated for impairment	143,000,000
Total loans collectively evaluated for impairment	6,026,000,000
Commercial Loan [Member] | Income CRE [Member]
Total loans individually evaluated for impairment	109,000,000
Total loans collectively evaluated for impairment	1,202,000,000
Commercial Loan [Member] | Loans to Mortgage Companies [Member]
Total loans collectively evaluated for impairment	582,000,000
Commercial Loan [Member] | Residential CRE [Member]
Total loans individually evaluated for impairment	65,000,000
Total loans collectively evaluated for impairment	118,000,000
General C&I [Member]
Total commercial loans	6,169,000,000
Loans to Mortgage Companies [Member]
Total commercial loans	582,000,000
TRUPs [Member]
Total commercial loans	429,000,000	[1]
LOCOM valuation allowance	35,600,000		35,600,000
Income CRE [Member]
Total commercial loans	1,311,000,000
Residential CRE [Member]
Total commercial loans	$ 183,000,000

[1] Presented net of a $35.6 million lower of cost or market ("LOCOM") valuation allowance. Based on the underlying structure of the notes, the highest possible internal grade is "13". Portfolio reserve estimate considers recent financial performance of individual borrowers and other factors.