Loans Changes in Carrying Amount of Accretable Yield for Purchased Loans at Acquisition Date (Details) (USD $) In Thousands, unless otherwise specified	Apr. 12, 2013
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Accretable yield	$ (355,825)
Acquired Loans [Member]
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Contractual required payments receivable	5,101,836
Nonaccretable difference	(121,719)
Expected cash flows	4,980,117
Carrying balance	4,624,292
Acquired Impaired
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Accretable yield	(128,961)
Acquired Impaired \| Acquired Loans [Member]
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Contractual required payments receivable	1,023,481
Nonaccretable difference	(121,719)
Expected cash flows	901,762
Carrying balance	772,801
Acquired Non-impaired
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Accretable yield	(226,864)
Acquired Non-impaired \| Acquired Loans [Member]
Changes in Carrying Amount of Accretable Yield for Purchased Loans Acquisition Date [Line Items]
Contractual required payments receivable	4,078,355
Nonaccretable difference	0
Expected cash flows	4,078,355
Carrying balance	$ 3,851,491

The investor's estimate, at acquisition, of the amount and timing of undiscounted principal, interest, and other cash flows expected to be collected. This would be the investor's best estimate of cash flows, including the effect of prepayments if considered, that is used in determining the acquisition price, and, in a business combination, the investor's estimate of fair value for purposes of acquisition price allocation. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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