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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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USD ($)
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USD ($)
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USD ($)
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USD ($)
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1/1/2010 - 12/31/2010
USD ($)
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USD ($)
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erence available.falsefalse4false0stt_LoansAcquiredWithDeterioratedCreditQualitysttfalsedebitdurationLoans Acquired With Deteriorated Credit Qualityfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3
falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse141000000141falsefalsefalsetruefalse6truefalsefalse4500000045falsefalsefalsetruefalse<
Id>7falsefalsefalse00 falsefalsefalsetruefalse8falsefalsefalse00 falsefalsef
alsetruefalse9truefalsefalse141000000141falsefalsefalsetruefalse10truefalsefalse4500000045falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryLoans Acquired With Deteriorated Credit QualityNo authoritative reference available.falsefalse5false0us-gaap_LoansAndLeasesReceivableNetReportedAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1185700000011857falsefalsefalsefalsefalse2truefalsefalse1072900000010729falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse764000000764falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7truefalsefalse1119300000011193falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9truefalsefalse1195700000011957falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryReflects the aggregate carrying amount of all categories of loans and leases held in portfolio, net of unearned income and the allowance for losses on loans and leases.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph e
falsefalse6false0us-gaap_LoansAndLeasesReceivableAllowanceus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse100000000100falsetruefalsefalsefalse2truefalsefalse7900000079falsetruefalsefalsefalse3true
falsefalse1800000018falsetruefalsefalsefalse4truefalsefalse1800000018falsetruefalsefalsefalse5false<
IsRatio>falsefalse00falsefalsefalsetruefalse6truefalsefalse6900000069falsetruefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8truefalsefalse3100000031falsetruefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse100000000100falsetruefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher OTS
-Name Federal Regulation (FR)
-Number Title 12
-Chapter V
-Section 563c.102
-Paragraph 8
-Subparagraph a(ii)
-Subsection I
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 114
-Paragraph 20
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 7
-Subparagraph d
-Article 9
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 8, 9
falsefalse105Loans and Leases (Allowance for Credit Losses and Recorded Investment in Financing Receivables) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
