Derivatives (Derivatives Associated With Legacy Mortgage Servicing Activities) (Details) (USD $) In Thousands					3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009	Jun. 30, 2011 Forwards and Futures [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2010 Forwards and Futures [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2011 Forwards and Futures [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2010 Forwards and Futures [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2011 Interest Rate Swaps and Swaptions [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2010 Interest Rate Swaps and Swaptions [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2011 Interest Rate Swaps and Swaptions [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2010 Interest Rate Swaps and Swaptions [Member] Retained Interests Hedging [Member] Hedging Instruments [Member]		Jun. 30, 2011 Mortgage Servicing Rights [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2010 Mortgage Servicing Rights [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2011 Mortgage Servicing Rights [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2010 Mortgage Servicing Rights [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2011 Other Retained Interests [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2010 Other Retained Interests [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2011 Other Retained Interests [Member] Retained Interests Hedging [Member] Hedged Items [Member]		Jun. 30, 2010 Other Retained Interests [Member] Retained Interests Hedging [Member] Hedged Items [Member]
Notional													$ 6,221,000	[1],[2]	$ 2,775,000	[1],[2]	$ 6,221,000	[1],[2]	$ 2,775,000	[1],[2]
Notional, Forwards and Futures					2,925,000	[1],[2]	1,450,000	[1],[2]	2,925,000	[1],[2]	1,450,000	[1],[2]
Assets													39,785	[1],[2]	32,224	[1],[2]	39,785	[1],[2]	32,224	[1],[2]
Assets, Forwards and Futures					5,654	[1],[2]	13,950	[1],[2]	5,654	[1],[2]	13,950	[1],[2]
Liabilities													26,934	[1],[2]	6,333	[1],[2]	26,934	[1],[2]	6,333	[1],[2]
Liabilities, Forwards and Futures					6,311	[1],[2]			6,311	[1],[2]
Gains/(Losses)													14,885	[1],[2]	29,371	[1],[2]	22,224	[1],[2]	56,421	[1],[2]
Gains/(Losses), Forwards and Futures					10,391	[1],[2]	35,060	[1],[2]	6,348	[1],[2]	40,620	[1],[2]
Fair value of retained interests	186,958	207,319	201,746	302,611																	183,364	[2],[3]	197,378	[2],[3]	183,364	[2],[3]	197,378	[2],[3]
Trading securities	1,196,380	769,750	1,806,789																										31,623	[2],[4]	40,204	[2],[4]	31,623	[2],[4]	40,204	[2],[4]
Unrealized gain (loss) included in earnings reflected in mortgage banking income																					$ (10,457)	[2],[3]	$ (21,722)	[2],[3]	$ (3,325)	[2],[3]	$ (45,057)	[2],[3]	$ 597	[2],[4]	$ 1,390	[2],[4]	$ 2,641	[2],[4]	$ 3,021	[2],[4]

[1] Assets included in the Other assets section of the Consolidated Condensed Statements of Condition. Liabilities included in the Other liabilities section of the Consolidated Condensed Statements of Condition.

[2] Gains/losses included in the Mortgage banking income section of the Consolidated Condensed Statements of Income.

[3] Assets included in the Mortgage servicing rights section of the Consolidated Condensed Statements of Condition.

[4] Assets included in the Trading securities section of the Consolidated Condensed Statements of Condition.