Business Combination - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2011 days units
Business Acquisition [Line Items]
EquityAppreciationInstrumentUnits	50
EquityAppreciationInstrumentExercisePrice	$ 3.43
Loss Sharing Agreement Allocation Percentage	80% of any future losses
True Up Payment Term	45
PaymentPercentageUnderLossSharingAgreement	50.00%
PercentageIntrinsicLossEstimate	20.00%
IntrinsicLossEstimate	4,600,000,000
PercentCalculationIntrinsicLossEstimate	925,000,000
PercentAssetdiscountPerBid	25.00%
CalculationPercentAssetDiscountPerBid	$ 1,100,000,000
PercentCalculateSumPeriodServicingAmounts	1.00%

Under the loss sharing agreements, BPPR will pay to the FDIC 50% of the excess, if any, of: (i) 20% of the intrinsic loss estimate of $4.6 billion (or $925 million)(as determined by the FDIC) less (ii) the sum of: (A) 25% of the asset discount (per bid) (or ($1.1 billion)); plus (B) 25% of the cumulative shared-loss payments (defined as the aggregate of all of the payments made or payable to BPPR minus the aggregate of all of the payments made or payable to the FDIC); plus (C) the sum of the period servicing amounts for every consecutive twelve-month period prior to and ending on the true-up measurement date in respect of each of the loss sharing agreements during which the loss sharing provisions of the applicable loss sharing agreement is in effect (defined as the product of the simple average of the principal amount of shared loss loans and shared loss assets at the beginning and end of such period times 1%).

No definition available.

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