Fair Value (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated. No transfers of financial assets or liabilities between levels 1 and 2 occurred during the six months ended June 30, 2012 or the year ended December 31, 2011.



	Fair Value Measurements on a Recurring Basis
	as of June 30, 2012
(In millions)	Quoted Market Prices in Active Markets (Level 1)		Pricing Methods with Significant Observable Market Inputs (Level 2)		Pricing Methods with Significant Unobservable Market Inputs (Level 3)		Impact of Netting⁽¹⁾			Total Net Carrying Value in Consolidated Statement of Condition
Assets:
Trading account assets:
U.S. government securities	$	20								$	20
Non-U.S. government securities	369									369
Other	71		$	146						217
Investment securities available for sale:
U.S. Treasury and federal agencies:
Direct obligations	393		896							1,289
Mortgage-backed securities	—		33,216		$	933				34,149
Asset-backed securities:
Student loans	—		16,251		484					16,735
Credit cards	—		9,522		274					9,796
Sub-prime	—		1,330		—					1,330
Other	—		763		3,094					3,857
Total asset-backed securities	—		27,866		3,852					31,718
Non-U.S. debt securities:
Mortgage-backed securities	—		10,542		273					10,815
Asset-backed securities	—		4,280		1,362					5,642
Government securities	—		1,821		—					1,821
Other	—		3,672		1					3,673
Total non-U.S. debt securities	—		20,315		1,636					21,951
State and political subdivisions	—		7,259		49					7,308
Collateralized mortgage obligations	—		4,429		301					4,730
Other U.S. debt securities	—		4,449		—					4,449
U.S. equity securities	—		676		—					676
Non-U.S. equity securities	—		108		—					108
Total investment securities available for sale	393		99,214		6,771					106,378
Other assets:
Derivative instruments:
Foreign exchange contracts	—		7,237		160
Interest-rate contracts	—		184		—
Total derivative instruments	—		7,421		160		$	(3,406	)	4,175
Other	99		2		—		—			101
Total assets carried at fair value	$	952	$	106,783	$	6,931	$	(3,406	)	$	111,260
Liabilities:
Accrued expenses and other liabilities:
Trading account liabilities:
U.S. government securities	$	5								$	5
Derivative instruments:
Foreign exchange contracts	—		$	7,041	$	157
Interest-rate contracts	—		304		—
Other	—		—		9
Total derivative instruments	—		7,345		166		$	(3,085	)	4,426
Other	99		—		—		—			99
Total liabilities carried at fair value	$	104	$	7,345	$	166	$	(3,085	)	$	4,530

⁽¹⁾

Represents counterparty netting against level 2 financial assets and liabilities, where a legally enforceable master netting agreement exists between State Street and the counterparty. Netting also reflects asset and liability reductions of $744 million and $424 million, respectively, for cash collateral received from and deposited with derivative counterparties. This netting cannot be disaggregated by type of derivative instrument.



	Fair Value Measurements on a Recurring Basis
	as of December 31, 2011
(In millions)	Quoted Market Prices in Active Markets (Level 1)		Pricing Methods with Significant Observable Market Inputs (Level 2)		Pricing Methods with Significant Unobservable Market Inputs (Level 3)		Impact of Netting⁽¹⁾			Total Net Carrying Value in Consolidated Statement of Condition
Assets:
Trading account assets:
U.S. government securities	$	20								$	20
Non-U.S. government securities	498									498
Other	51		$	138						189
Investment securities available for sale:
U.S. Treasury and federal agencies:
Direct obligations	1,727		1,109							2,836
Mortgage-backed securities	—		28,832		$	1,189				30,021
Asset-backed securities:
Student loans	—		15,685		860					16,545
Credit cards	—		10,396		91					10,487
Sub-prime	—		1,404		—					1,404
Other	—		667		2,798					3,465
Total asset-backed securities	—		28,152		3,749					31,901
Non-U.S. debt securities:
Mortgage-backed securities	—		9,418		1,457					10,875
Asset-backed securities	—		2,535		1,768					4,303
Government securities	—		1,671		—					1,671
Other	—		2,754		71					2,825
Total non-U.S. debt securities	—		16,378		3,296					19,674
State and political subdivisions	—		6,997		50					7,047
Collateralized mortgage obligations	—		3,753		227					3,980
Other U.S. debt securities	—		3,613		2					3,615
U.S. equity securities	—		640		—					640
Non-U.S. equity securities	1		117		—					118
Total investment securities available for sale	1,728		89,591		8,513					99,832
Other assets:
Derivatives instruments:
Foreign exchange contracts	—		12,045		168
Interest-rate contracts	—		1,795		10
Other	—		1		—
Total derivative instruments	—		13,841		178		$	(7,653	)	6,366
Other	110		—		—		—			110
Total assets carried at fair value	$	2,407	$	103,570	$	8,691	$	(7,653	)	$	107,015
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts			$	12,191	$	161
Interest-rate contracts			1,970		11
Other			1		9
Total derivative instruments			14,162		181		$	(7,653	)	$	6,690
Other	$	110	—		20		—			130
Total liabilities carried at fair value	$	110	$	14,162	$	201	$	(7,653	)	$	6,820


⁽¹⁾	Represents counterparty netting against level 2 financial assets and liabilities, where a legally enforceable master netting agreement exists between State Street and the counterparty. This netting cannot be disaggregated by type of derivative instrument.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following tables present activity related to our level-3 financial assets and liabilities during the three and six months ended June 30, 2012 and 2011, respectively. Transfers into and out of level 3 are reported as of the beginning of the period. During both the three and six months ended June 30, 2012 and 2011, transfers out of level 3 were substantially related to certain mortgage- and asset-backed securities and non-U.S. debt securities, for which fair value was measured using prices for which observable market information became available.



	Fair Value Measurements Using Significant Unobservable Inputs
	Three Months Ended June 30, 2012
	Fair Value at March 31, 2012		Transfers into Level 3		Transfers out of Level 3			Total Realized and Unrealized Gains (Losses)						Purchases		Issuances	Sales	Settlements			Fair Value at June 30, 2012		Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2012
(In millions)								Recorded in Revenue			Recorded in Other Comprehensive Income
Assets:
Investment securities available for sale:
U.S. Treasury and federal agencies, mortgage-backed securities	$	912	$	50														$	(29	)	$	933
Asset-backed securities:
Student loans	511		—					$	1		$	(8	)					(20		)	484
Credit cards	119		—					2			(4		)	$	157			—			274
Other	3,090		—					11			9			213				(229		)	3,094
Total asset-backed securities	3,720		—					14			(3		)	370				(249		)	3,852
Non-U.S. debt securities:
Mortgage-backed securities	469		—		$	(338	)	—			3			147				(8		)	273
Asset-backed securities	1,035		—		(483		)	—			1			840				(31		)	1,362
Other	314		—		(308		)	—			(4		)	—				(1		)	1
Total non-U.S. debt securities	1,818		—		(1,129		)	—			—			987				(40		)	1,636
State and political subdivisions	50		—		—			—			—			—				(1		)	49
Collateralized mortgage obligations	193		45		(59		)	66			—			177				(121		)	301
Total investment securities available for sale	6,693		95		(1,188		)	80			(3		)	1,534				(440		)	6,771
Other assets:
Derivative instruments, foreign exchange contracts	127		—		—			(77		)	—			157				(47		)	160		$	(52	)
Total assets carried at fair value	$	6,820	$	95	$	(1,188	)	$	3		$	(3	)	$	1,691	—	—	$	(487	)	$	6,931	$	(52	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Six Months Ended June 30, 2011
	Fair Value at December 31, 2010		Transfers into Level 3		Transfers out of Level 3			Total Realized and Unrealized Gains (Losses)						Purchases		Issuances	Sales			Settlements			Fair Value at June 30, 2011		Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2011
(In millions)								Recorded in Revenue			Recorded in Other Comprehensive Income
Assets:
Investment securities available for sale:
U.S. Treasury and federal agencies:
Direct obligations														$	17								$	17
Mortgage-backed securities	$	673			$	(404	)				$	1		699						$	(37	)	932
Asset-backed securities:
Student loans	1,234				(341		)	$	3		—			421						(28		)	1,289
Credit cards	43				(16		)	2			(2		)	51						1			79
Other	2,000		$	114	(135		)	16			49			570						(84		)	2,530
Total asset-backed securities	3,277		114		(492		)	21			47			1,042						(111		)	3,898
Non-U.S. debt securities:
Mortgage-backed securities	396		—		(702		)	—			—			653						14			361
Asset-backed securities	740		—		(120		)	—			12			1,253						(136		)	1,749
Government securities	1		—		—			—			—			—						(1		)	—
Other	8		—		—			—			(1		)	—						(1		)	6
Total non-U.S. debt securities	1,145		—		(822		)	—			11			1,906						(124		)	2,116
State and political subdivisions	50		—		—			—			2			2						—			54
Collateralized mortgage obligations	359		—		(329		)	333			(2		)	165						(353		)	173
Other U.S. debt securities	3		—		—			—			—			—						(1		)	2
Total investment securities available for sale	5,507		114		(2,047		)	354			59			3,831						(626		)	7,192
Other assets:
Derivative instruments:
Foreign exchange contracts	254		—		—			(104		)	—			154			$	(3	)	(99		)	202		$	(59	)
Interest-rate contracts	—		—		—			(3		)	—			10			—			—			7		8
Total derivative instruments	254		—		—			(107		)	—			164			(3		)	(99		)	209		(51		)
Total assets carried at fair value	$	5,761	$	114	$	(2,047	)	$	247		$	59		$	3,995	—	$	(3	)	$	(725	)	$	7,401	$	(51	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Three Months Ended June 30, 2011
	Fair Value at March 31, 2011		Transfers into Level 3		Transfers out of Level 3			Total Realized and Unrealized Gains (Losses)						Purchases		Issuances	Sales			Settlements			Fair Value at June 30, 2011		Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2011
(In millions)								Recorded in Revenue			Recorded in Other Comprehensive Income
Assets:
Investment securities available for sale:
U.S. Treasury and federal agencies:
Direct obligations														$	17								$	17
Mortgage-backed securities	$	898												62						$	(28	)	932
Asset-backed securities:
Student loans	1,308				$	(308	)	$	1		$	(1	)	300						(11		)	1,289
Credit cards	75				(15		)	1			—			19						(1		)	79
Other	2,248		$	114	(135		)	9			3			295						(4		)	2,530
Total asset-backed securities	3,631		114		(458		)	11			2			614						(16		)	3,898
Non-U.S. debt securities:
Mortgage-backed securities	682		—		(506		)	—			—			182						3			361
Asset-backed securities	1,125		—		(60		)	—			1			761						(78		)	1,749
Other	6		—		—			—			—			—						—			6
Total non-U.S. debt securities	1,813		—		(566		)	—			1			943						(75		)	2,116
State and political subdivisions	51		—		—			—			1			2						—			54
Collateralized mortgage obligations	228		—		(196		)	199			—			142						(200		)	173
Other U.S. debt securities	3		—		—			—			—			—						(1		)	2
Total investment securities available for sale	6,624		114		(1,220		)	210			4			1,780						(320		)	7,192
Other assets:
Derivative instruments:
Foreign exchange contracts	227		—		—			(37		)	—			96			$	(2	)	(82		)	202		$	(29	)
Interest-rate contracts	8		—		—			(1		)	—			—			—			—			7		(1		)
Total derivative instruments	235		—		—			(38		)	—			96			(2		)	(82		)	209		(30		)
Total assets carried at fair value	$	6,859	$	114	$	(1,220	)	$	172		$	4		$	1,876	—	$	(2	)	$	(402	)	$	7,401	$	(30	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Six Months Ended June 30, 2012
	Fair Value at December 31, 2011		Transfers into Level 3		Transfers out of Level 3			Total Realized and Unrealized Gains (Losses)						Purchases		Issuances	Sales			Settlements			Fair Value at June 30, 2012		Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2012
(in millions)								Recorded in Revenue			Recorded in Other Comprehensive Income
Assets:
Investment securities available for sale:
U.S. Treasury and federal agencies, mortgage-backed securities	$	1,189	$	50	$	(251	)													$	(55	)	$	933
Asset-backed securities:
Student loans	860		—		(341		)	$	1		$	(10	)							(26		)	484
Credit cards	91		21		—			3			(3		)	$	224		$	(62	)	—			274
Other	2,798		—		—			21			25			569			(12		)	(307		)	3,094
Total asset-backed securities	3,749		21		(341		)	25			12			793			(74		)	(333		)	3,852
Non-U.S. debt securities:
Mortgage-backed securities	1,457		—		(1,495		)	—			4			306			—			1			273
Asset-backed securities	1,768		—		(1,568		)	—			—			1,207			—			(45		)	1,362
Other	71		—		(372		)				(4		)	308			—			(2		)	1
Total Non-U.S. debt securities	3,296		—		(3,435		)	—			—			1,821			—			(46		)	1,636
State and political subdivisions	50		—		—			—			—			—			—			(1		)	49
Collateralized mortgage obligations	227		45		(191		)	201			—			282			—			(263		)	301
Other U.S. debt securities	2		—		—			—			—			—			—			(2		)	—
Total investment securities available for sale	8,513		116		(4,218		)	226			12			2,896			(74		)	(700		)	6,771
Other assets:
Derivative instruments:
Foreign exchange contracts	168		—		—			(108		)	—			198			—			(98		)	160		$	(73	)
Interest-rate contracts	10		—		—			(10		)	—			—			1			(1		)	—		—
Total derivative instruments	178		—		—			(118		)	—			198			1			(99		)	160		(73		)
Total assets carried at fair value	$	8,691	$	116	$	(4,218	)	$	108		$	12		$	3,094	—	$	(73	)	$	(799	)	$	6,931	$	(73	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Six Months Ended June 30, 2012
	Fair Value at December 31, 2011		Transfers into Level 3	Transfers out of Level 3	Total Realized and Unrealized (Gains) Losses				Purchases	Issuances		Sales	Settlements			Fair Value at June 30, 2012		Change in Unrealized (Gains) Losses Related to Financial Instruments Held at June 30, 2012
(In millions)					Recorded in Revenue			Recorded in Other Comprehensive Income
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts	$	161			$	(115	)			$	195		$	(84	)	$	157	$	(68	)
Interest-rate contracts	11				(10		)			—			(1		)	—		—
Other	9				—					—			—			9		—
Total derivative instruments	181				(125		)			195			(85		)	166		(68		)
Other	20				—					—			(20		)	—		—
Total liabilities carried at fair value	$	201	—	—	$	(125	)	—	—	$	195	—	$	(105	)	$	166	$	(68	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Three Months Ended June 30, 2011
	Fair Value at March 31, 2011		Transfers into Level 3		Transfers out of Level 3			Total Realized and Unrealized Gains (Losses)						Purchases		Issuances	Sales			Settlements			Fair Value at June 30, 2011		Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2011
(In millions)								Recorded in Revenue			Recorded in Other Comprehensive Income
Assets:
Investment securities available for sale:
U.S. Treasury and federal agencies:
Direct obligations														$	17								$	17
Mortgage-backed securities	$	898												62						$	(28	)	932
Asset-backed securities:
Student loans	1,308				$	(308	)	$	1		$	(1	)	300						(11		)	1,289
Credit cards	75				(15		)	1			—			19						(1		)	79
Other	2,248		$	114	(135		)	9			3			295						(4		)	2,530
Total asset-backed securities	3,631		114		(458		)	11			2			614						(16		)	3,898
Non-U.S. debt securities:
Mortgage-backed securities	682		—		(506		)	—			—			182						3			361
Asset-backed securities	1,125		—		(60		)	—			1			761						(78		)	1,749
Other	6		—		—			—			—			—						—			6
Total non-U.S. debt securities	1,813		—		(566		)	—			1			943						(75		)	2,116
State and political subdivisions	51		—		—			—			1			2						—			54
Collateralized mortgage obligations	228		—		(196		)	199			—			142						(200		)	173
Other U.S. debt securities	3		—		—			—			—			—						(1		)	2
Total investment securities available for sale	6,624		114		(1,220		)	210			4			1,780						(320		)	7,192
Other assets:
Derivative instruments:
Foreign exchange contracts	227		—		—			(37		)	—			96			$	(2	)	(82		)	202		$	(29	)
Interest-rate contracts	8		—		—			(1		)	—			—			—			—			7		(1		)
Total derivative instruments	235		—		—			(38		)	—			96			(2		)	(82		)	209		(30		)
Total assets carried at fair value	$	6,859	$	114	$	(1,220	)	$	172		$	4		$	1,876	—	$	(2	)	$	(402	)	$	7,401	$	(30	)

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]



	Fair Value Measurements Using Significant Unobservable Inputs
	Six Months Ended June 30, 2012
	Fair Value at December 31, 2011		Transfers into Level 3	Transfers out of Level 3	Total Realized and Unrealized (Gains) Losses				Purchases	Issuances		Sales	Settlements			Fair Value at June 30, 2012		Change in Unrealized (Gains) Losses Related to Financial Instruments Held at June 30, 2012
(In millions)					Recorded in Revenue			Recorded in Other Comprehensive Income
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts	$	161			$	(115	)			$	195		$	(84	)	$	157	$	(68	)
Interest-rate contracts	11				(10		)			—			(1		)	—		—
Other	9				—					—			—			9		—
Total derivative instruments	181				(125		)			195			(85		)	166		(68		)
Other	20				—					—			(20		)	—		—
Total liabilities carried at fair value	$	201	—	—	$	(125	)	—	—	$	195	—	$	(105	)	$	166	$	(68	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Three Months Ended June 30, 2011
	Fair Value at March 31, 2011		Transfers into Level 3	Transfers out of Level 3	Total Realized and Unrealized (Gains) Losses				Purchases			Issuances		Sales		Settlements			Fair Value at June 30, 2011		Change in Unrealized (Gains) Losses Related to Financial Instruments Held at June 30, 2011
(In millions)	Fair Value at March 31, 2011		Transfers into Level 3	Transfers out of Level 3	Recorded in Revenue			Recorded in Other Comprehensive Income	Purchases			Issuances		Sales		Settlements			Fair Value at June 30, 2011
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts	$	232			$	(20	)		$	(2	)			$	79	$	(84	)	$	205	$	(17	)
Interest-rate contracts	—				—				—			$	14	—		—			14		14
Other	9				—				—			—		—		—			9		—
Total derivative instruments	241				(20		)		(2		)	14		79		(84		)	228		(3		)
Total liabilities carried at fair value	$	241	—	—	$	(20	)	—	$	(2	)	$	14	$	79	$	(84	)	$	228	$	(3	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Three Months Ended June 30, 2012
	Fair Value at March 31, 2012		Transfers into Level 3	Transfers out of Level 3	Total Realized and Unrealized (Gains) Losses				Purchases	Issuances		Sales	Settlements			Fair Value at June 30, 2012		Change in Unrealized (Gains) Losses Related to Financial Instruments Held at June 30, 2012
(In millions)	Fair Value at March 31, 2012		Transfers into Level 3	Transfers out of Level 3	Recorded in Revenue			Recorded in Other Comprehensive Income	Purchases	Issuances		Sales	Settlements			Fair Value at June 30, 2012
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts	$	126			$	(78	)			$	150		$	(41	)	$	157	$	(52	)
Other	9				—					—			—			9		—
Total derivative instruments	135				(78		)			150			(41		)	166		(52		)
Other	20				—					—			(20		)	—		—
Total liabilities carried at fair value	$	155	—	—	$	(78	)	—	—	$	150	—	$	(61	)	$	166	$	(52	)



	Fair Value Measurements Using Significant Unobservable Inputs
	Six Months Ended June 30, 2011
	Fair Value at December 31, 2010		Transfers into Level 3	Transfers out of Level 3	Total Realized and Unrealized (Gains) Losses				Purchases			Issuances		Sales		Settlements			Fair Value at June 30, 2011		Change in Unrealized (Gains) Losses Related to Financial Instruments Held at June 30, 2011
(In millions)	Fair Value at December 31, 2010		Transfers into Level 3	Transfers out of Level 3	Recorded in Revenue			Recorded in Other Comprehensive Income	Purchases			Issuances		Sales		Settlements			Fair Value at June 30, 2011
Liabilities:
Accrued expenses and other liabilities:
Derivative instruments:
Foreign exchange contracts	$	260			$	(88	)		$	(3	)			$	144	$	(108	)	$	205	$	(49	)
Interest-rate contracts	—				1				—			$	13	—		—			14		14
Other	9				—				—			—		—		—			9		—
Total derivative instruments	269				(87		)		(3		)	13		144		(108		)	228		(35		)
Total liabilities carried at fair value	$	269	—	—	$	(87	)	—	$	(3	)	$	13	$	144	$	(108	)	$	228	$	(35	)

Level 3 Total Realized And Unrealized Gains And Losses Recorded In Revenue

The following table presents total realized and unrealized gains and losses for the periods indicated that were recorded in revenue for our level-3 financial assets and liabilities:



	Three Months Ended June 30,									Six Months Ended June 30,
(In millions)	Total Realized and Unrealized Gains (Losses) Recorded in Revenue					Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2012				Total Realized and Unrealized Gains (Losses) Recorded in Revenue					Change in Unrealized Gains (Losses) Related to Financial Instruments Held at June 30, 2012
	2012		2011			2012	2011			2012		2011			2012			2011
Fee revenue:
Trading services	$	1	$	(18	)		$	(27	)	$	7	$	(20	)	$	(5	)	$	(16	)
Total fee revenue	1		(18		)		(27		)	7		(20		)	(5		)	(16		)
Net interest revenue	80		210				—			226		354			—			—
Total revenue	$	81	$	192		—	$	(27	)	$	233	$	334		$	(5	)	$	(16	)

Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table Text Block]

The following table presents quantitative information about the valuation techniques and significant unobservable inputs used in the valuation of our level-3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally developed pricing models. The significant unobservable inputs for our level-3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker or dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer.



	Quantitative Information about Level-3 Fair Value Measurements
(Dollars in millions)	Fair Value at June 30, 2012		Valuation Technique	Significant Unobservable Input	Weighted-Average
Significant unobservable inputs readily available to State Street:
Assets:
Asset-backed securities, student loans	$	11	Discounted cash flows	Credit spread	8.4%
Asset-backed securities, credit cards	138		Discounted cash flows	Credit spread	2.9%
Asset-backed securities, other	104		Discounted cash flows	Credit spread	1.3%
Non-U.S. debt securities, other	1		Discounted cash flows	Credit spread	.3%
State and political subdivisions	49		Discounted cash flows	Credit spread	1.9%
Derivative instruments, foreign exchange contracts	160		Option model	Volatility	11.3%
Total	$	463

Liabilities:
Derivative instruments, foreign exchange contracts	$	157	Option model	Volatility	11.2%
Derivative instruments, other	9		Discounted cash flows	Participant redemptions	6.4%
Total	$	166

Schedule of Availability of Significant Unobservable Inputs by Balance Sheet Classification [Table Text Block]

The following table presents information with respect to the composition of our level-3 financial assets and liabilities by availability of significant unobservable inputs as of June 30, 2012:



	Fair Value at June 30, 2012
(In millions)	Significant Unobservable Inputs Readily Available to State Street ⁽¹⁾		Significant Unobservable Inputs Not Developed by State Street and Not Readily Available ⁽²⁾		Total Assets and Liabilities with Significant Unobservable Inputs
Assets:
Mortgage-backed securities			$	933	$	933
Asset-backed securities, student loans	$	11	473		484
Asset-backed securities, credit cards	138		136		274
Asset-backed securities, other	104		2,990		3,094
Non-U.S. debt securities, mortgage-backed securities	—		273		273
Non-U.S. debt securities, asset-backed securities	—		1,362		1,362
Non-U.S. debt securities, other	1		—		1
State and political subdivisions	49		—		49
Collateralized mortgage obligations	—		301		301
Derivative instruments, foreign exchange contracts	160		—		160
Total	$	463	$	6,468	$	6,931

Liabilities:
Derivative instruments, foreign exchange contracts	$	157			$	157
Derivative instruments, other	9				9
Total	$	166	—		$	166

Carrying Value and Estimated Fair Value of Financial Instruments by Fair Value Hierarchy [Table Text Block]

The following table presents the reported amounts and estimated fair values of the financial instruments defined by GAAP, excluding financial assets and liabilities carried at fair value on a recurring basis, as they would be categorized within the fair-value hierarchy as of June 30, 2012.



					Fair Value Hierarchy
(In millions)	Reported Amount		Fair Value		Quoted Market Prices in Active Markets (Level 1)		Pricing Methods with Significant Observable Market Inputs (Level 2)		Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Financial Assets:
Cash and due from banks	$	6,088	$	6,088	$	6,088
Interest-bearing deposits with banks	31,145		31,145				$	31,145
Securities purchased under resale agreements	8,144		8,144		—		8,144
Investment securities held to maturity	7,807		7,934		—		7,898		$	36
Loans (excluding leases)	11,139		11,145		—		10,044		1,101
Financial Liabilities:
Deposits:
Noninterest-bearing	41,194		41,194		—		41,194		—
Interest-bearing-U.S.	11,209		11,209		—		11,209		—
Interest-bearing-non-U.S.	91,368		91,368		—		91,368		—
Securities sold under repurchase agreements	8,893		8,893		—		8,893		—
Federal funds purchased	671		671		—		671		—
Other short-term borrowings	4,714		4,714		—		4,714		—
Long-term debt	6,392		6,636		—		5,746		890

Schedule of Reported Amounts and Estimated Fair Values for Financial Instruments [Table Text Block]

The following table presents the reported amounts and estimated fair values of the financial instruments defined by GAAP, excluding the aforementioned short-duration financial instruments and financial assets and liabilities carried at fair value on a recurring basis, as of December 31, 2011:



(In millions)	Reported Amount		Fair Value
Financial Assets:
Investment securities held to maturity	$	9,321	$	9,362
Net loans (excluding leases)	8,777		8,752

Financial Liabilities:
Long-term debt	8,131		8,206

- Definition

Tabular disclosure of the total amount of gains or losses for the period which are included in earnings or resulted in a change to net assets which gains or losses have arisen from the use of significant unobservable inputs (Level 3) to measure the fair value of assets and liabilities. Such gains or losses are attributable to the change in unrealized gains or losses relating to those assets and liabilities so valued which are still held at the reporting date and which change are also considered for disclosure; it may be expected that a description of where those unrealized gains or losses are reported in the statement of income or the statement of financial position would also be disclosed.

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

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