Line of Business Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Summary of Line of Business Results

The following is a summary of our line of business results for the periods indicated. The “Other” column for 2013 included net acquisition and restructuring costs and certain provisions for litigation exposure. The “Other” column for 2012 included the net realized loss from the sale of all of our Greek investment securities, net acquisition and restructuring costs and certain provisions for litigation exposure. The amounts in the “Other” columns were not allocated to State Street's business lines. Results for the 2012 periods reflect reclassifications, for comparative purposes, related to management changes in methodology associated with funds transfer pricing and expense allocation reflected in results for 2013.

	Three Months Ended June 30,
(Dollars in millions, except where otherwise noted)	Investment Servicing						Investment Management						Other						Total
	2013			2012			2013			2012			2013			2012			2013			2012
Fee revenue:
Servicing fees	$	1,201		$	1,086		$	—		$	—		$	—		$	—		$	1,201		$	1,086
Management fees	—			—			277			246			—			—			277			246
Trading services	279			232			17			23			—			—			296			255
Securities finance	117			127			14			16			—			—			131			143
Processing fees and other	66			60			—			(12		)	—			—			66			48
Total fee revenue	1,663			1,505			308			273			—			—			1,971			1,778
Net interest revenue	571			653			25			19									596			672
Gains (losses) related to investment securities, net	(7		)	19			—			—			—			(46		)	(7		)	(27		)
Total revenue	2,227			2,177			333			292			—			(46		)	2,560			2,423
Provision for loan losses	—			(1		)	—			—			—			—			—			(1		)
Total expenses	1,546			1,512			207			216			45			44			1,798			1,772
Income before income tax expense	$	681		$	666		$	126		$	76		$	(45	)	$	(90	)	$	762		$	652
Pre-tax margin	31		%	31		%	38		%	26		%							30		%	27		%
Average assets (in billions)	$	203.6		$	185.2		$	4.1		$	3.9								$	207.7		$	189.1

	Six Months Ended June 30,
(Dollars in millions, except where otherwise noted)	Investment Servicing						Investment Management						Other						Total
	2013			2012			2013			2012			2013			2012			2013			2012
Fee revenue:
Servicing fees	$	2,376		$	2,164		$	—		$	—		$	—		$	—		$	2,376		$	2,164
Management fees	—			—			540			482			—			—			540			482
Trading services	536			487			41			48			—			—			577			535
Securities finance	186			215			23			25			—			—			209			240
Processing fees and other	121			145			5			(3		)	—			—			126			142
Total fee revenue	3,219			3,011			609			552			—			—			3,828			3,563
Net interest revenue	1,128			1,258			44			39			—			—			1,172			1,297
Gains (losses) related to investment securities, net	(5		)	30			—			—			—			(46		)	(5		)	(16		)
Total revenue	4,342			4,299			653			591			—			(46		)	4,995			4,844
Provision for loan losses	—			(1		)	—			—			—			—			—			(1		)
Total expenses	3,132			3,078			433			449			59			80			3,624			3,607
Income before income tax expense	$	1,210		$	1,222		$	220		$	142		$	(59	)	$	(126	)	$	1,371		$	1,238
Pre-tax margin	28		%	28		%	34		%	24		%							27		%	26		%
Average assets (in billions)	$	204.0		$	184.7		$	4.0		$	3.9								$	208.0		$	188.6