The 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

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

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

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 9

-Section 03

-Paragraph 7

-Subparagraph d

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

+ Details

Loans And Leases (Schedule Of Allowance For Loan Losses) (Details) (USD $) In Millions	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2009
Total Loans and Leases	$ 11,740		$ 11,957
Total - Allowance for loan losses	22	54	100	101	102	79
Institutional [Member] \| Loans And Leases [Member]
Individually evaluated for impairment	93		112
Collectively evaluated for impairment	11,044		11,081
Loans And Leases [Member]
Individually evaluated for impairment	657		735
Collectively evaluated for impairment	11,044		11,081
Loans acquired with deteriorated credit quality	39		141
Loans And Leases [Member] \| Commercial Real Estate [Member]
Individually evaluated for impairment	564		623
Loans acquired with deteriorated credit quality	39		141
Institutional [Member] \| Allowance For Loan Losses [Member]
Collectively evaluated for impairment	22		31
Allowance For Loan Losses [Member]
Individually evaluated for impairment			24
Collectively evaluated for impairment	22		31
Loans acquired with deteriorated credit quality			45
Allowance For Loan Losses [Member] \| Commercial Real Estate [Member]
Individually evaluated for impairment			24
Loans acquired with deteriorated credit quality			45
Institutional [Member]
Total Loans and Leases	11,137		11,193
Total - Allowance for loan losses	22		31
Commercial Real Estate [Member]
Total Loans and Leases	603		764
Total - Allowance for loan losses			$ 69