Investment Securities (Tables)

12 Months Ended

Dec. 31, 2013

Investment Securities (Tables) [Abstract]

Schedule of Available for Sale Securities by Type

The following is a summary of investment securities as of December 31:

	2013								2012
			Gross		Gross		Estimated				Gross		Gross		Estimated
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
Description of Securities (Millions)		Cost	Gains		Losses		Value			Cost	Gains		Losses		Value
State and municipal obligations	$	4,060	$	54	$	(79)	$	4,035	$	4,280	$	199	$	(5)	$	4,474
U.S. Government agency obligations		3		―		―		3		3		―		―		3
U.S. Government treasury obligations		318		3		(1)		320		330		8		―		338
Corporate debt securities		43		3		―		46		73		6		―		79
Mortgage-backed securities ^(a)		160		5		(1)		164		210		14		―		224
Equity securities ^(b)		29		95		―		124		64		232		―		296
Foreign government bonds and obligations		272		5		(1)		276		134		15		―		149
Other ^(c)		50		―		(2)		48		51		―		―		51
Total	$	4,935	$	165	$	(84)	$	5,016	$	5,145	$	474	$	(5)	$	5,614

Represents mortgage-backed securities guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae.
Primarily represents the Company's investment in ICBC.
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 December 31:

	2013								2012
	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	$	1,320	$	(63)	$	106	$	(16)	$	100	$	(1)	$	73	$	(4)
Foreign government bonds and obligations		208		(1)		―		―		―		―		―		―
U.S. Government treasury obligations		166		(1)		―		―		―		―		―		―
Mortgage-backed securities		35		(1)		―		―		―		―		―		―
Other		30		(1)		17		(1)		―		―		―		―
Total	$	1,759	$	(67)	$	123	$	(17)	$	100	$	(1)	$	73	$	(4)

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 December 31:

	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
2013:
90%–100%	228	$	1,665	$	(53)	6	$	24	$	(2)	234	$	1,689	$	(55)
Less than 90%	13		94		(14)	5		99		(15)	18		193		(29)
Total as of December 31, 2013	241	$	1,759	$	(67)	11	$	123	$	(17)	252	$	1,882	$	(84)
2012:
90%–100%	46	$	100	$	(1)	4	$	73	$	(4)	50	$	173	$	(5)
Total as of December 31, 2012	46	$	100	$	(1)	4	$	73	$	(4)	50	$	173	$	(5)

Gross realized gains and losses on the sales of investment securities

Gross realized gains and losses on the sales of investment securities, included in other non-interest revenues, were as follows:

(Millions)	2013		2012		2011
Gains	$	136	$	127	$	16
Losses		―		(1)		―
Total	$	136	$	126	$	16

Contractual maturities of investment securities

Contractual maturities of investment securities, excluding equity securities and other securities, as of December 31, 2013 were as follows:

			Estimated
(Millions)	Cost		Fair Value
Due within 1 year	$	505	$	505
Due after 1 year but within 5 years		489		496
Due after 5 years but within 10 years		215		224
Due after 10 years		3,647		3,619
Total	$	4,856	$	4,844

- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

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