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Summary of Significant Accounting Policies - Depreciable Lives of Premises and Equipment (Details) | 12 Months Ended
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Dec. 31, 2012
Minimum | Buildings |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 5 years
Minimum | Equipment, furniture and fixtures |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 3 years
Minimum | Equipment, furniture and fixtures | Assets newly placed in service |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 3 years
Minimum | Leasehold improvements |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 1 year
Maximum | Buildings |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 50 years
Maximum | Buildings | Assets newly placed in service |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 30 years
Maximum | Equipment, furniture and fixtures |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 20 years
Maximum | Equipment, furniture and fixtures | Assets newly placed in service |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 12 years
Maximum | Leasehold improvements |
Property, Plant and Equipment [Line Items] |
Premises and equipment, depreciable lives | 10 years

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- Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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