Loans And leases (Components Of The Net Investment In Leveraged Leases) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Loans And Leases [Abstract]
Net rental income receivable	$ 1,671	$ 2,187
Estimated residual values	110	118
Unearned income	(527)	(835)
Investment in leveraged lease financing	1,254	1,470
Less related deferred income tax liabilities	(397)	(463)
Net investment in leveraged lease financing	$ 857	$ 1,007

Leveraged leases net investment in leveraged leases disclosure unearned income.

No definition available.

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- Definition

The net investment in arrangements meeting the criteria to be classified as leveraged.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Taxes arising from arrangements meeting the criteria for classification as leveraged leases due to timing differences between accounting and tax income recognition.

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The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 43

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

This element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on the nonrecourse debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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- Definition

The estimate of the value of the leased asset at the end of the lease term.

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-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.

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