Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Issuances.

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Principal Payments.

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Sales.

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Settlements.

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- Definition

Net Change in Unrealized Gains (Losses) Relating to Assets.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).

+ References

+ Details

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- Definition

Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

+ References

+ Details

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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Fair Values of Assets and Liabilities (Details 2) (USD $) In Millions	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2011 Non-agency Prime [Member]	Sep. 30, 2010 Non-agency Prime [Member]	Sep. 30, 2011 Non-agency Prime [Member]	Sep. 30, 2010 Non-agency Prime [Member]	Sep. 30, 2011 Non-agency Non-prime [Member]	Sep. 30, 2010 Non-agency Non-prime [Member]	Sep. 30, 2011 Non-agency Non-prime [Member]	Sep. 30, 2010 Non-agency Non-prime [Member]	Sep. 30, 2011 Commercial Mortgage-backed Non-Agency Securities [Member]	Sep. 30, 2010 Commercial Mortgage-backed Non-Agency Securities [Member]	Sep. 30, 2011 Commercial Mortgage-backed Non-Agency Securities [Member]	Sep. 30, 2010 Commercial Mortgage-backed Non-Agency Securities [Member]	Sep. 30, 2011 Collateralized Loan Obligations [Member]	Sep. 30, 2010 Collateralized Loan Obligations [Member]	Sep. 30, 2011 Collateralized Loan Obligations [Member]	Sep. 30, 2010 Collateralized Loan Obligations [Member]	Sep. 30, 2011 Others [Member]	Sep. 30, 2010 Others [Member]	Sep. 30, 2011 Others [Member]	Sep. 30, 2010 Others [Member]	Sep. 30, 2010 Corporate Debt Securities [Member]	Sep. 30, 2010 Corporate Debt Securities [Member]	Sep. 30, 2011 Corporate Debt Securities [Member]	Jun. 30, 2011 Corporate Debt Securities [Member]	Dec. 31, 2010 Corporate Debt Securities [Member]	Sep. 30, 2010 Other Investments [Member]	Sep. 30, 2010 Other Investments [Member]	Sep. 30, 2011 Available for Sale Securities [Member]	Sep. 30, 2010 Available for Sale Securities [Member]	Sep. 30, 2011 Available for Sale Securities [Member]	Sep. 30, 2010 Available for Sale Securities [Member]	Sep. 30, 2011 Mortgage servicing rights [Member]	Sep. 30, 2010 Mortgage servicing rights [Member]	Sep. 30, 2011 Mortgage servicing rights [Member]	Sep. 30, 2010 Mortgage servicing rights [Member]	Sep. 30, 2011 Net derivative assets and liabilities [Member]	Sep. 30, 2010 Net derivative assets and liabilities [Member]	Sep. 30, 2011 Net derivative assets and liabilities [Member]	Sep. 30, 2010 Net derivative assets and liabilities [Member]
Changes in fair value for all assets and liabilities measured at fair value
Beginning of period balance	$ 896	$ 1,197	$ 1,103	$ 1,429	$ 895	$ 907	$ 947	$ 968	$ 50	$ 15	$ 50	$ 13	$ 133	$ 75	$ 135	$ 98	$ 129	$ 328	$ 133	$ 357	$ 10	$ 10	$ 9	$ 9	$ 9	$ 266	$ 231	$ 2,112	$ 2,798	$ 2,377	$ 3,106	$ 1,989	$ 1,543	$ 1,837	$ 1,749	$ 836	$ 1,294	$ 851	$ 815
Net Gains (Losses) Included in Net Income	1	1	4	1	(2)	(9)	(4)	(46)	1	1	2	1	3	3	10	3	1	3	8	(2)	(1)	(1)				2	4	4		20	(40)	(629)	(280)	(803)	(773)	836	682	1,252	1,741
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	(2)	22	22	72	(5)	36	27	104	(1)	1	(1)	3	(2)	2	6		(4)	8	(2)	6						16	63	(14)	85	52	248
Net Total Purchases, Sales, Principal Payments, Issuances and Settlements	(36)	(51)	(270)	(333)	(31)	11	(113)	(81)	(5)	33	(6)	33	(9)	69	(26)	48	(6)	(209)	(19)	(231)						(7)	(21)	(87)	(154)	(434)	(585)	106	159	432	446	(342)	(544)	(773)	1,124
End of Period Balance	859	1,169	859	1,169	857	945	857	945	45	50	45	50	125	149	125	149	120	130	120	130	9	9	9	9	9	277	277	2,015	2,729	2,015	2,729	1,466	1,422	1,466	1,422	1,330	1,432	1,330	1,432
Net Change in Unrealized Gains (Losses) Relating to Assets Still Held at End of Period	(2)	22	14	66	(5)	36	26	104		1		2	(2)	2	7	3	(4)	8	(2)	7						16	63	(13)	85	45	245	(629)	(280)	(803)	(773)	77	119	(92)	160
Additional detail of purchases, sales, principal payments, issuances and settlements
Purchases																																5		16
Sales			(115)				(12)		(4)		(4)																	(4)		(131)						2		(5)
Principal Payments	(36)		(155)		(31)		(101)		(1)		(2)		(9)		(26)		(6)		(19)									(83)		(303)
Issuances																																101		416
Settlements																																				(340)		(768)
Net Total	$ (36)	$ (51)	$ (270)	$ (333)	$ (31)	$ 11	$ (113)	$ (81)	$ (5)	$ 33	$ (6)	$ 33	$ (9)	$ 69	$ (26)	$ 48	$ (6)	$ (209)	$ (19)	$ (231)						$ (7)	$ (21)	$ (87)	$ (154)	$ (434)	$ (585)	$ 106	$ 159	$ 432	$ 446	$ (342)	$ (544)	$ (773)	$ 1,124