Investment Securities (Tables)

6 Months Ended

Jun. 30, 2012

Investment Securities (Tables) [Abstract]

Schedule of Available for Sale Securities by Type

The following is a summary of investment securities as of June 30, 2012 and December 31, 2011:

		2012								2011
					Gross		Gross		Estimated				Gross		Gross		Estimated
					Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
(Millions)			Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
State and municipal obligations		$	4,643	$	157	$	(21)	$	4,779	$	4,968	$	103	$	(72)	$	4,999
U.S. Government agency
	obligations		3		―		―		3		352		2		―		354
U.S. Government treasury
	obligations		330		9		―		339		330		10		―		340
Corporate debt securities(a)			471		5		(2)		474		626		9		(3)		632
Mortgage-backed securities(b)			241		17		―		258		261		17		―		278
Equity securities(c)			81		209		―		290		95		265		―		360
Foreign government bonds and
	obligations		118		12		―		130		120		10		―		130
Other(d)			52		1		―		53		54		―		―		54
Total		$	5,939	$	410	$	(23)	$	6,326	$	6,806	$	416	$	(75)	$	7,147

(a) The June 30, 2012 and December 31, 2011 balancesinclude, on a cost basis, $400 million and $550million, respectively, of corporate debt obligations issued under the Temporary Liquidity Guarantee Program that are guaranteed by the Federal Deposit Insurance Corporation (FDIC).

(b)        Represents mortgage-backed securities guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae.

(c)        Primarily represents the Company's investment in the Industrial and Commercial Bank of China (ICBC).

(d) Other comprises investments in various mutual funds.

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value

The following table provides information about the Company's investment securities with gross unrealized losses and the length of time that individual securities have been in a continuous unrealized loss position as of June 30, 2012 and December 31, 2011:

	2012								2011
	Less than 12 months				12 months or more				Less than 12 months				12 months or more
				Gross				Gross				Gross				Gross
		Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
Description of Securities (Millions)		Fair Value		Losses		Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
State and municipal obligations	$	96	$	(1)	$	351	$	(20)	$	―	$	―	$	1,094	$	(72)
Corporate debt securities		15		(1)		3		(1)		15		(2)		2		(1)
Total	$	111	$	(2)	$	354	$	(21)	$	15	$	(2)	$	1,096	$	(73)

Available for Sale Securities Ratio of Fair Value to Amortized Cost

The following table summarizes the gross unrealized losses due to temporary impairments by ratio of fair value to amortized cost as of June 30, 2012 and December 31, 2011:

	Less than 12 months					12 months or more					Total
					Gross					Gross					Gross
Ratio of Fair Value to	Number of		Estimated		Unrealized	Number of		Estimated		Unrealized	Number of		Estimated		Unrealized
Amortized Cost (Dollars in millions)	Securities		Fair Value		Losses	Securities		Fair Value		Losses	Securities		Fair Value		Losses
2012:
90%–100%	15	$	111	$	(2)	31	$	281	$	(8)	46	$	392	$	(10)
Less than 90%	―		―		―	6		73		(13)	6		73		(13)
Total as of June 30, 2012	15	$	111	$	(2)	37	$	354	$	(21)	52	$	465	$	(23)
2011:
90%–100%	―	$	―	$	―	114	$	884	$	(35)	114	$	884	$	(35)
Less than 90%	1		15		(2)	22		212		(38)	23		227		(40)
Total as of December 31, 2011	1	$	15	$	(2)	136	$	1,096	$	(73)	137	$	1,111	$	(75)

Contractual maturities of investment securities

Contractual maturities of investment securities, excluding equity securities and other securities, as of June 30, 2012 were as follows:

				Estimated
(Millions)		Cost		Fair Value
Due within 1 year	$	545	$	549
Due after 1 year but within 5 years		358		366
Due after 5 years but within 10 years		176		187
Due after 10 years		4,727		4,881
Total	$	5,806	$	5,983