XML 34 R50.htm IDEA: XBRL DOCUMENT v2.4.0.6
Loans (Balances Of Commercial Loan Portfolio Classes, Disaggregated By PD Grade) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
number
Jun. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Allowance for loan losses $ 281,744 [1],[2] $ 321,051 $ 384,351 $ 449,645 [1],[2] $ 524,091 $ 664,799
Total loans collectively evaluated for impairment 16,028,451     15,746,035    
Total loans individually evaluated for impairment 495,332     495,367    
Highest internal grade 13          
Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total commercial loans 1,600,000          
Commercial Loan P D Grade One [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 213,871     166,468    
Percent of Total 2.00%     2.00%    
Commercial Loan P D Grade One [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 213,871     166,468    
Commercial Loan P D Grade One [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade One [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade One [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade One [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade One [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 54     16    
Commercial Loan P D Grade Two [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 185,601     154,118    
Percent of Total 2.00%     2.00%    
Commercial Loan P D Grade Two [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 183,044     151,483    
Commercial Loan P D Grade Two [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Two [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Two [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 2,557     2,635    
Commercial Loan P D Grade Two [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Two [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 94     35    
Commercial Loan P D Grade Three [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 137,393     203,217    
Percent of Total 1.00%     2.00%    
Commercial Loan P D Grade Three [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 129,183     186,256    
Commercial Loan P D Grade Three [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Three [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Three [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 8,210     16,961    
Commercial Loan P D Grade Three [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Three [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 79     182    
Commercial Loan P D Grade Four [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 260,223     191,751    
Percent of Total 3.00%     2.00%    
Commercial Loan P D Grade Four [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 254,537     184,891    
Commercial Loan P D Grade Four [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Four [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Four [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 5,660     6,763    
Commercial Loan P D Grade Four [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 26     97    
Commercial Loan P D Grade Four [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 226     532    
Commercial Loan P D Grade Five [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 525,607     369,158    
Percent of Total 5.00%     4.00%    
Commercial Loan P D Grade Five [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 497,375     339,569    
Commercial Loan P D Grade Five [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Five [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Five [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 28,115     29,521    
Commercial Loan P D Grade Five [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 117     68    
Commercial Loan P D Grade Five [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,027     1,244    
Commercial Loan P D Grade Six [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,192,994     1,260,719    
Percent of Total 12.00%     13.00%    
Commercial Loan P D Grade Six [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 891,971     902,482    
Commercial Loan P D Grade Six [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 129,816     276,960    
Commercial Loan P D Grade Six [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Six [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 166,183     78,654    
Commercial Loan P D Grade Six [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 5,024     2,623    
Commercial Loan P D Grade Six [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 3,002     7,107    
Commercial Loan P D Grade Seven [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,521,526     1,275,203    
Percent of Total 16.00%     14.00%    
Commercial Loan P D Grade Seven [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,033,349     789,022    
Commercial Loan P D Grade Seven [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 327,812     344,002    
Commercial Loan P D Grade Seven [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Seven [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 156,309     140,093    
Commercial Loan P D Grade Seven [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 4,056     2,086    
Commercial Loan P D Grade Seven [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 7,868     11,581    
Commercial Loan P D Grade Eight [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 2,100,649     1,621,279    
Percent of Total 22.00%     17.00%    
Commercial Loan P D Grade Eight [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 968,311     1,117,411    
Commercial Loan P D Grade Eight [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 959,623     314,251    
Commercial Loan P D Grade Eight [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Eight [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 172,200     185,485    
Commercial Loan P D Grade Eight [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 515     4,132    
Commercial Loan P D Grade Eight [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 12,028     17,842    
Commercial Loan P D Grade Nine [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,004,911     798,398    
Percent of Total 10.00%     9.00%    
Commercial Loan P D Grade Nine [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 644,862     586,787    
Commercial Loan P D Grade Nine [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 186,130     91,955    
Commercial Loan P D Grade Nine [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Nine [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 172,544     116,130    
Commercial Loan P D Grade Nine [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,375     3,526    
Commercial Loan P D Grade Nine [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 10,084     16,825    
Commercial Loan P D Grade Ten [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 629,704     574,234    
Percent of Total 7.00%     6.00%    
Commercial Loan P D Grade Ten [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 498,174     411,252    
Commercial Loan P D Grade Ten [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 33,302     38,829    
Commercial Loan P D Grade Ten [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Ten [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 96,892     123,546    
Commercial Loan P D Grade Ten [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,336     607    
Commercial Loan P D Grade Ten [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 8,103     11,788    
Commercial Loan P D Grade Eleven [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 536,533     614,486    
Percent of Total 6.00%     7.00%    
Commercial Loan P D Grade Eleven [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 449,874     487,740    
Commercial Loan P D Grade Eleven [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Eleven [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Eleven [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 84,635     125,077    
Commercial Loan P D Grade Eleven [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 2,024     1,669    
Commercial Loan P D Grade Eleven [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 9,112     16,760    
Commercial Loan P D Grade Twelve [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 180,167     151,071    
Percent of Total 2.00%     2.00%    
Commercial Loan P D Grade Twelve [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 167,041     129,760    
Commercial Loan P D Grade Twelve [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Twelve [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     0 [3]    
Commercial Loan P D Grade Twelve [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 11,848     15,954    
Commercial Loan P D Grade Twelve [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 1,278     5,357    
Commercial Loan P D Grade Twelve [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 2,709     5,011    
Commercial Loan P D Grade Thirteen [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 566,558     777,764    
Percent of Total 6.00%     9.00%    
Commercial Loan P D Grade Thirteen [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 149,268     322,884    
Commercial Loan P D Grade Thirteen [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     0    
Commercial Loan P D Grade Thirteen [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 338,177 [3]     334,099 [3]    
Commercial Loan P D Grade Thirteen [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 75,408     113,228    
Commercial Loan P D Grade Thirteen [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 3,705     7,553    
Commercial Loan P D Grade Thirteen [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 9,211     31,891    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 420,730     642,028    
Percent of Total 4.00%     7.00%    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 257,249     321,424    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0     491    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 0 [3]     4,081 [3]    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 133,941     252,669    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 29,540     63,363    
Commercial Loan P D Grade Fourteen Fifteen Sixteen [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial loan, Disaggregated by PD grade 41,439     72,129    
Commercial Loan [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Percent of Total 100.00%     100.00%    
Total commercial loans 9,696,305     9,134,089    
Commercial Loan [Member] | General C I [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loans collectively evaluated for impairment 6,338,109     6,097,429    
Total loans individually evaluated for impairment 79,796     119,944    
Total commercial loans 6,417,905     6,217,373    
Commercial Loan [Member] | Loans To Mortgage Companies [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loans collectively evaluated for impairment 1,636,683     1,066,488    
Total loans individually evaluated for impairment 0     0    
Total commercial loans 1,636,683     1,066,488    
Commercial Loan [Member] | T R U Ps [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loans collectively evaluated for impairment 338,177 [3]     338,180 [3]    
Total loans individually evaluated for impairment 73,685 [3]     83,708 [3]    
Total commercial loans 411,862 [3]     421,888 [3]    
Commercial Loan [Member] | Income C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loans collectively evaluated for impairment 1,114,502     1,206,716    
Total loans individually evaluated for impairment 46,364     79,967    
Total commercial loans 1,160,866     1,286,683    
Commercial Loan [Member] | Residential C R E [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loans collectively evaluated for impairment 48,996     91,081    
Total loans individually evaluated for impairment 19,993     50,576    
Total commercial loans 68,989     141,657    
Commercial Loan [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total commercial loans 133,890     247,441    
Collectively Evaluated For Impairment [Member] | Commercial Loan [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Percent of Total 98.00%     96.00%    
Total commercial loans 9,476,467     8,799,894    
Collectively Evaluated For Impairment [Member] | Commercial Loan [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total commercial loans 105,036     192,943    
Individually Evaluated For Impairment [Member] | Commercial Loan [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Percent of Total 2.00%     4.00%    
Total commercial loans 219,838     334,195    
Individually Evaluated For Impairment [Member] | Commercial Loan [Member] | Allowance For Loan Losses [Member]
           
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total commercial loans $ 28,854     $ 54,498    
[1] Balances as of September 30, 2012 and 2011 include $14.7 million and $26.9 million of reserves, respectively, and $417.0 million and $623.3 million of balances in restricted consumer real estate loans and secured borrowings, respectively.
[2] Balances as of September 30, 2012 and 2011 include $.6 million and $5.5 million of reserves, respectively, and $14.2 million and $42.4 million of balances in restricted permanent mortgage loans and secured borrowings, respectively.
[3] Balances as of September 30, 2012 and 2011, presented net of $34.2 million and $35.3 million, respectively, LOCOM. Based on the underlying structure of the notes, the highest possible internal grade is "13".