Investment Securities

Our portfolio of securities includes bonds, equity securities, asset- and mortgage-backed securities, interests in securitization trusts, and other investments. The cost, fair value, and gross unrealized gains and losses on available-for-sale securities were as follows.



	March 31, 2015									December 31, 2014
	Amortized cost		Gross unrealized					Fair value		Amortized cost		Gross unrealized					Fair value
($ in millions)	Amortized cost		gains		losses			Fair value		Amortized cost		gains		losses			Fair value
Available-for-sale securities
Debt securities
U.S. Treasury and federal agencies	$	2,673	$	19	$	(4	)	$	2,688	$	1,195	$	1	$	(18	)	$	1,178
U.S. States and political subdivisions	506		19		(1		)	524		389		17		—			406
Foreign government	202		13		—			215		224		8		—			232
Mortgage-backed residential (a)	10,246		144		(85		)	10,305		10,431		119		(125		)	10,425
Mortgage-backed commercial	313		—		(1		)	312		254		—		(1		)	253
Asset-backed	2,061		6		(1		)	2,066		1,989		5		(3		)	1,991
Corporate debt	731		22		(1		)	752		734		14		(2		)	746
Total debt securities	16,732		223		(93		)	16,862		15,216		164		(149		)	15,231
Equity securities	984		28		(45		)	967		891		49		(34		)	906
Total available-for-sale securities (b)	$	17,716	$	251	$	(138	)	$	17,829	$	16,107	$	213	$	(183	)	$	16,137


(a)	Residential mortgage-backed securities include agency-backed bonds totaling $7,312 million and $7,557 million at March 31, 2015, and

December 31, 2014, respectively.


(b)	Certain entities related to our Insurance operations are required to deposit securities with state regulatory authorities. Amounts deposited totaled $15 million at March 31, 2015, and December 31, 2014, respectively.

The maturity distribution of available-for-sale debt securities outstanding is summarized in the following tables. Prepayments may cause actual maturities to differ from scheduled maturities.



	Total				Due in one year or less				Due after one year through five years				Due after five years through ten years				Due after ten years (a)
($ in millions)	Amount		Yield		Amount		Yield		Amount		Yield		Amount		Yield		Amount		Yield
March 31, 2015
Fair value of available-for-sale debt securities
U.S. Treasury and federal agencies	$	2,688	1.8	%	$	83	0.2	%	$	685	1.2	%	$	1,920	2.0	%	$	—	—	%
U.S. States and political subdivisions	524		3.6		30		2.0		25		3.0		104		3.0		365		3.9
Foreign government	215		2.8		—		—		122		2.6		93		3.0		—		—
Mortgage-backed residential	10,305		2.7		—		—		51		2.1		5		3.0		10,249		2.7
Mortgage-backed commercial	312		1.6		—		—		28		1.6		—		—		284		1.5
Asset-backed	2,066		2.0		—		—		1,290		2.0		533		2.0		243		2.1
Corporate debt	752		3.2		41		3.3		447		2.7		232		3.8		32		5.7
Total available-for-sale debt securities	$	16,862	2.5		$	154	1.4		$	2,648	1.9		$	2,887	2.2		$	11,173	2.7
Amortized cost of available-for-sale debt securities	$	16,732			$	153			$	2,631			$	2,845			$	11,103
December 31, 2014
Fair value of available-for-sale debt securities
U.S. Treasury and federal agencies	$	1,178	1.5	%	$	7	3.0	%	$	677	1.2	%	$	494	1.9	%	$	—	—	%
U.S. States and political subdivisions	406		3.7		34		1.9		12		2.1		106		3.0		254		4.3
Foreign government	232		2.7		—		—		128		2.5		104		2.9		—		—
Mortgage-backed residential	10,425		2.6		34		3.1		58		2.1		—		—		10,333		2.6
Mortgage-backed commercial	253		1.5		—		—		30		1.8		—		—		223		1.4
Asset-backed	1,991		1.9		—		—		1,311		1.9		463		2.0		217		2.2
Corporate debt	746		3.2		33		3.1		460		2.7		216		3.8		37		5.6
Total available-for-sale debt securities	$	15,231	2.5		$	108	2.7		$	2,676	1.9		$	1,383	2.4		$	11,064	2.6
Amortized cost of available-for-sale debt securities	$	15,216			$	108			$	2,674			$	1,374			$	11,060


(a)	Investments with no stated maturities are included as contractual maturities of greater than 10 years. Actual maturities may differ due to call or prepayment options.

The balances of cash equivalents were $2.3 billion and $2.0 billion at March 31, 2015, and December 31, 2014, respectively, and were composed primarily of money market accounts and short-term securities, including U.S. Treasury bills.

The following table presents interest and dividends on available-for-sale securities.



	Three months ended March 31,
($ in millions)	2015		2014
Taxable interest	$	80	$	86
Taxable dividends	5		5
Interest and dividends exempt from U.S. federal income tax	3		4
Interest and dividends on available-for-sale securities	$	88	$	95

The following table presents gross gains and losses realized upon the sales of available-for-sale securities and other-than-temporary impairment.



	Three months ended March 31,
($ in millions)	2015			2014
Gross realized gains	$	60		$	60
Gross realized losses	(3		)	(7		)
Other-than-temporary impairment	(2		)	(10		)
Other gain on investments, net	$	55		$	43

Certain available-for-sale securities were sold at a loss in 2015 and 2014 as a result of market conditions within these respective periods (e.g., a downgrade in the rating of a debt security), in accordance with our risk management policies and practices. The table below summarizes available-for-sale securities in an unrealized loss position in accumulated other comprehensive income. Based on the methodology that was applied to these securities, we believe that the unrealized losses relate to factors other than credit losses in the current market environment. As of March 31, 2015, we did not have the intent to sell the debt securities with an unrealized loss position in accumulated other comprehensive income, and it is not more likely than not that we will be required to sell these securities before recovery of their amortized cost basis. As of March 31, 2015, we had the ability and intent to hold equity securities with an unrealized loss position in accumulated other comprehensive income, and it is not more likely than not that we will be required to sell these securities before recovery of their amortized cost basis. As a result, we believe that the securities with an unrealized loss position in accumulated other comprehensive income are not considered to be other-than-temporarily impaired at March 31, 2015. Refer to Note 1 to the Consolidated Financial Statements in our 2014 Annual Report on Form 10-K for additional information related to investment securities and our methodology for evaluating potential other-than-temporary impairments.



	March 31, 2015										December 31, 2014
	Less than 12 months					12 months or longer					Less than 12 months					12 months or longer
($ in millions)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Available-for-sale securities
Debt securities
U.S. Treasury and federal agencies	$	277	$	—		$	670	$	(4	)	$	297	$	(3	)	$	859	$	(15	)
U.S. States and political subdivisions	120		(1		)	—		—			50		—			—		—
Mortgage-backed	1,064		(6		)	2,537		(80		)	1,172		(10		)	3,098		(116		)
Asset-backed	524		(1		)	1		—			819		(3		)	8		—
Corporate debt	34		(1		)	6		—			132		(2		)	11		—
Total temporarily impaired debt securities	2,019		(9		)	3,214		(84		)	2,470		(18		)	3,976		(131		)
Temporarily impaired equity securities	374		(37		)	28		(8		)	231		(24		)	40		(10		)
Total temporarily impaired available-for-sale securities	$	2,393	$	(46	)	$	3,242	$	(92	)	$	2,701	$	(42	)	$	4,016	$	(141	)