Loans and Allowance for Credit Losses (Activity in the Allowance for Credit Losses) (Details) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Loans and Allowance for Credit Losses
Loans and Leases Receivable, Allowance, Beginning Balance	$ 271,156	$ 269,254	$ 275,498	$ 257,553
Loans charged off	(40,675)	(31,532)	(86,204)	(61,524)
Recoveries of loans previously charged off	2,152	2,655	5,339	4,348
Net loans charged off	(38,523)	(28,877)	(80,865)	(57,176)
Provision for credit losses	36,000	40,000	74,000	80,000
Loans and Leases Receivable, Allowance, Ending Balance	$ 268,633	$ 280,377	$ 268,633	$ 280,377

Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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Reflects the amount charged against earnings during the period as bad debt expense, net of recoveries of previously expensed credit losses.

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- Definition

Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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- Definition

Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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