9. Business Units – The following tables show the earnings contributions of Northern Trust’s business units for the three and nine month periods ended September 30, 2011 and 2010.


Three Months Ended	Corporate and						Personal Financial						Treasury and						Total
September 30,	Institutional Services						Services						Other						Consolidated
($ In Millions)	2011			2010			2011			2010			2011			2010			2011			2010
Noninterest Income
Trust, Investment and Other Servicing Fees	$	310.9		$	293.2		$	244.4		$	225.5		$	—		$	—		$	555.3		$	518.7
Other		125.0			114.9			30.7			33.3			3.7			(10.9	)		159.4			137.3
Net Interest Income (FTE)*		71.2			67.2			157.1			151.0			38.3			24.8			266.6			243.0

Revenues*		507.1			475.3			432.2			409.8			42.0			13.9			981.3			899.0
Provision for Credit Losses		(1.9	)		(2.8	)		19.4			32.8			—			—			17.5			30.0
Noninterest Expenses		375.8			330.6			300.6			274.6			24.8			16.9			701.2			622.1

Income before Income Taxes*		133.2			147.5			112.2			102.4			17.2			(3.0	)		262.6			246.9
Provision for Income Taxes*		50.3			51.9			44.5			39.0			(2.6	)		.4			92.2			91.3

Net Income	$	82.9		$	95.6		$	67.7		$	63.4		$	19.8		$	(3.4	)	$	170.4			155.6

Percentage of Consolidated Net Income		49	%		61	%		40	%		41	%		11	%		(2	)%		100	%		100	%
Average Assets	$	49,755.5		$	38,701.2		$	23,809.5		$	23,495.9		$	20,464.7		$	12,509.6		$	94,029.7		$	74,706.7

*	Stated on a fully taxable equivalent basis (FTE). Total consolidated includes FTE adjustments of $9.8 million for 2011 and $9.5 million for 2010.


Nine Months Ended	Corporate and						Personal Financial						Treasury and						Total
September 30,	Institutional Services						Services						Other						Consolidated
($ In Millions)	2011			2010			2011			2010			2011			2010			2011			2010
Noninterest Income
Trust, Investment and Other Servicing Fees	$	890.7		$	906.5		$	737.3		$	670.8		$	—		$	—		$	1,628.0		$	1,577.3
Other		373.8			384.9			94.9			100.0			(19.7	)		(7.3	)		449.0			477.6
Net Interest Income (FTE)*		199.1			207.9			456.6			439.3			112.4			78.3			768.1			725.5

Revenues*		1,463.6			1,499.3			1,288.8			1,210.1			92.7			71.0			2,845.1			2,780.4
Provision for Credit Losses		(18.8	)		(11.3	)		61.3			131.3			—			—			42.5			120.0
Noninterest Expenses		1,096.2			977.9			893.3			814.1			70.0			64.2			2,059.5			1,856.2

Income before Income Taxes*		386.2			532.7			334.2			264.7			22.7			6.8			743.1			804.2
Provision for Income Taxes*		147.4			187.7			132.7			100.5			(10.4	)		3.6			269.7			291.8

Net Income	$	238.8		$	345.0		$	201.5		$	164.2		$	33.1		$	3.2		$	473.4			512.4

Percentage of Consolidated Net Income		50	%		67	%		43	%		32	%		7	%		1	%		100	%		100	%
Average Assets	$	47,079.8		$	37,775.9		$	23,696.1		$	23,527.4		$	19,148.3		$	13,322.8		$	89,924.2		$	74,626.1

*	Stated on a fully taxable equivalent basis (FTE). Total consolidated includes FTE adjustments of $30.8 million for 2011 and $28.8 million for 2010.

Further discussion of business unit results is provided within the “Business Unit Reporting” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations.