The following table summarizes the changes in the allowance for credit losses by product and the related loan balance by product during the years ended December 31, 2012, 2011 and 2010:



	Commercial												Consumer
	Construction and Other Real Estate			Business Banking and Middle Market Enterprises			Global Banking			Other Comm’l			Residential Mortgage, Excl Home Equity Mortgages			Home Equity Mortgages			Credit Card			Auto Finance		Other Consumer			Total
	(in millions)
Year Ended December 31, 2012
Allowance for credit losses – beginning of period	$	212		$	78		$	131		$	21		$	192		$	52		$	39		$	—	$	18		$	743
Provision charged to income	(33		)	48			14			(10		)	114			72			67			—		21			293
Charge offs	(36		)	(37		)	(105		)	(1		)	(107		)	(79		)	(62		)	—		(25		)	(452		)
Recoveries	19			8			1			7			11			—			11			—		6			63
Net charge offs	(17		)	(29		)	(104		)	6			(96		)	(79		)	(51		)	—		(19		)	(389		)
Other	—			—			—			—			—			—			—			—		—			—
Allowance for credit losses – end of period	$	162		$	97		$	41		$	17		$	210		$	45		$	55		$	—	$	20		$	647
Ending balance: collectively evaluated for impairment	$	76		$	87		$	41		$	17		$	105		$	41		$	50		$	—	$	20		$	437
Ending balance: individually evaluated for impairment	86			10			—			—			105			4			5			—		—			210
Total allowance for credit losses	$	162		$	97		$	41		$	17		$	210		$	45		$	55		$	—	$	20		$	647
Loans:
Collectively evaluated for impairment	$	7,960		$	12,502		$	19,991		$	3,000		$	13,563		$	2,303		$	801		$	—	$	598		$	60,718
Individually evaluated for impairment⁽¹⁾	497			106			18			76			331			21			14			—		—			1,063
Loans carried at lower of amortized cost or fair value less cost to sell	—			—			—			—			1,477			—			—			—		—			1,477
Total loans	$	8,457		$	12,608		$	20,009		$	3,076		$	15,371		$	2,324		$	815		$	—	$	598		$	63,258
Year Ended December 31, 2011
Allowance for credit losses – beginning of period	$	243		$	132		$	116		$	32		$	167		$	77		$	58		$	—	$	27		$	852
Provision charged to income	11			(3		)	31			(28		)	133			49			46			—		19			258
Charge offs	(51		)	(53		)	—			(6		)	(106		)	(70		)	(71		)	—		(29		)	(386		)
Recoveries	9			12			—			23			5			—			12			—		4			65
Net charge offs	(42		)	(41		)	—			17			(101		)	(70		)	(59		)	—		(25		)	(321		)
Allowance on loans transferred to held for sale	—			(10		)	(16		)	—			(7		)	(4		)	(6		)	—		(3		)	(46		)
Other	—			—			—			—			—			—			—			—		—			—
Allowance for credit losses – end of period	$	212		$	78		$	131		$	21		$	192		$	52		$	39		$	—	$	18		$	743
Ending balance: collectively evaluated for impairment	$	98		$	66		$	41		$	21		$	104		$	48		$	32		$	—	$	18		$	428
Ending balance: individually evaluated for impairment	114			12			90			—			88			4			7			—		—			315
Total allowance for credit losses	$	212		$	78		$	131		$	21		$	192		$	52		$	39		$	—	$	18		$	743



	Commercial												Consumer
	Construction and Other Real Estate			Business Banking and Middle Market Enterprises			Global Banking			Other Comm’l			Residential Mortgage, Excl Home Equity Mortgages			Home Equity Mortgages			Credit Card			Auto Finance			Other Consumer			Total
	(in millions)
Loans:
Collectively evaluated for impairment	$	7,127		$	10,098		$	12,521		$	2,816		$	12,817		$	2,550		$	807		$	—		$	714		$	49,450
Individually evaluated for impairment⁽¹⁾	733			127			137			90			244			13			21			—			—			1,365
Loans carried at lower of amortized cost or fair value less cost to sell	—			—			—			—			1,052			—			—			—			—			1,052
Total loans	$	7,860		$	10,225		$	12,658		$	2,906		$	14,113		$	2,563		$	828		$	—		$	714		$	51,867
Year Ended December 31, 2010
Allowance for credit losses – beginning of period	$	303		$	184		$	301		$	119		$	347		$	185		$	80		$	36		$	47		$	1,602
Provision charged to income	101			19			(163		)	(35		)	(14		)	13			68			35			10			34
Charge offs	(173		)	(88		)	(24		)	(59		)	(170		)	(121		)	(98		)	(37		)	(36		)	(806		)
Recoveries	12			17			2			5			4			—			8			(1		)	6			53
Net charge offs	(161		)	(71		)	(22		)	(54		)	(166		)	(121		)	(90		)	(38		)	(30		)	(753		)
Allowance on loans transferred to held for sale	—			—			—			—			—			—			—			(33		)	—			(33		)
Other	—			—			—			2			—			—			—			—			—			2
Allowance for credit losses – end of period	$	243		$	132		$	116		$	32		$	167		$	77		$	58		$	—		$	27		$	852
Ending balance: collectively evaluated for impairment	$	159		$	106		$	44		$	26		$	118		$	74		$	49		$	—		$	27		$	603
Ending balance: individually evaluated for impairment	84			26			72			6			49			3			9			—			—			249
Total allowance for credit losses	$	243		$	132		$	116		$	32		$	167		$	77		$	58		$	—		$	27		$	852
Loans:
Collectively evaluated for impairment	$	7,473		$	7,793		$	10,640		$	2,970		$	12,411		$	3,812		$	1,223		$	—		$	1,039		$	47,361
Individually evaluated for impairment⁽¹⁾	755			152			105			115			221			8			27			—			—			1,383
Loans carried at lower of amortized cost or fair value less cost to sell	—			—			—			—			1,065			—			—			—			—			1,065
Total loans	$	8,228		$	7,945		$	10,745		$	3,085		$	13,697		$	3,820		$	1,250		$	—		$	1,039		$	49,809

⁽¹⁾

For consumer loans, these amounts represent TDR Loans for which we evaluate reserves using a discounted cash flow methodology. Each loan is individually identified as a TDR Loan and then grouped together with other TDR Loans with similar characteristics. The discounted cash flow analysis is then applied to these groups of TDR Loans. The loan balance above excludes TDR loans that are carried at the lower of amortized cost or fair value of the collateral less cost to sell which totaled $608 million, $303 million and $173 million at December 31, 2012, 2011 and 2010, respectively.

We historically have estimated prob