Investment Securities (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

	September 30, 2015								December 31, 2014
			Gross		Gross						Gross		Gross
	Amortized		unrealized		unrealized		Estimated		Amortized		unrealized		unrealized		Estimated
(In millions)	cost		gains		losses		fair value		cost		gains		losses		fair value

Debt
U.S. corporate	$	19,975	$	3,102	$	(178)	$	22,899	$	19,810	$	3,962	$	(69)	$	23,703
State and municipal		3,972		439		(71)		4,340		4,173		555		(53)		4,675
Residential mortgage-backed(a)		905		84		(5)		984		1,544		153		(5)		1,692
Commercial mortgage-backed		2,295		121		(12)		2,405		2,903		170		(10)		3,063
Asset-backed		107		1		(10)		97		304		8		(17)		295
Corporate – non-U.S.		769		101		(3)		867		908		109		(1)		1,016
Government – non-U.S.		1,094		158		(1)		1,252		1,560		152		(2)		1,710
U.S. government and federal agency		3,783		99		-		3,882		1,957		56		-		2,013
Equity
Available-for-sale		113		16		(4)		125		109		24		(1)		132
Trading		19		-		-		19		21		-		-		21
Total	$	33,032	$	4,121	$	(285)	$	36,868	$	33,289	$	5,189	$	(158)	$	38,320

(a) Substantially collateralized by U.S. mortgages. At September 30, 2015, $961 million related to securities issued by government-sponsored entities and $23 million related to securities of private-label issuers. Securities issued by private-label issuers are collateralized primarily by pools of individual direct mortgage loans of financial institutions.

Schedule of investments, by type and length in continuous loss position

ESTIMATED FAIR VALUE AND GROSS UNREALIZED LOSSES OF AVAILABLE-FOR-SALE INVESTMENT SECURITIES

	In loss position for
	Less than 12 months					12 months or more
			Gross					Gross
	Estimated		unrealized			Estimated		unrealized
(In millions)	fair value		losses		(a)	fair value		losses		(a)

September 30, 2015
Debt
U.S. corporate	$	2,161	$	(130)		$	335	$	(48)
State and municipal		544		(16)			155		(55)
Residential mortgage-backed		175		(2)			77		(3)
Commercial mortgage-backed		351		(8)			26		(4)
Asset-backed		-		-			48		(10)
Corporate – non-U.S.		41		(3)			3		-
Government – non-U.S.		292		(1)			-		-
U.S. government and federal agency		450		-			1		-
Equity		38		(4)			-		-
Total	$	4,052	$	(164)		$	645	$	(121)	(b)

December 31, 2014
Debt
U.S. corporate	$	554	$	(16)		$	836	$	(53)
State and municipal		67		(1)			308		(52)
Residential mortgage-backed		30		-			146		(5)
Commercial mortgage-backed		165		(1)			204		(9)
Asset-backed		9		-			42		(17)
Corporate – non-U.S.		42		(1)			3		-
Government – non-U.S.		677		(2)			14		-
U.S. government and federal agency		705		-			1		-
Equity		6		(1)			-		-
Total	$	2,255	$	(22)		$	1,554	$	(136)

(a) Included gross unrealized losses of $1 million related to securities that had other-than-temporary impairments previously recognized at September 30, 2015.

(b) Includes debt securities held to support obligations to holders of GICs all of which are considered to be investment-grade by the major rating agencies at September 30, 2015.

Pre Tax Other Than Temporary Impairments On Investment Securities [Table Text Block]

PRE-TAX, OTHER-THAN-TEMPORARY IMPAIRMENTS ON INVESTMENT SECURITIES

	Three months ended September 30				Nine months ended September 30
(In millions)	2015		2014		2015		2014

Total pre-tax, OTTI recognized	$	2	$	2	$	21	$	18
Pre-tax, OTTI recognized in AOCI		-		-		-		(4)
Pre-tax, OTTI recognized in earnings(a)	$	2	$	2	$	21	$	14

(a) Included pre-tax, other-than-temporary impairments recorded in earnings related to equity securities of $1 million and none in the three months ended September 30, 2015 and 2014, respectively and $1 million and $2 million in the nine months ended September 30, 2015 and 2014, respectively.

Changes in Cumulative Cerdit Loss Impairments Recognized on Debt Securities Still Held

CHANGES IN CUMULATIVE CREDIT LOSS IMPAIRMENTS RECOGNIZED ON DEBT SECURITIES STILL HELD

	Three months ended September 30				Nine months ended September 30
(In millions)	2015		2014		2015		2014

Cumulative credit loss impairments recognized, beginning of period	$	6	$	255	$	8	$	306
Credit loss impairments recognized
on securities not previously impaired		-		-		-		-
Incremental credit loss impairments recognized
on securities previously impaired		-		2		-		4
Less credit loss impairments previously recognized
on securities sold during the period or that we intend to sell		-		-		2		53
Cumulative credit loss impairments recognized, end of period	$	6	$	257	$	6	$	257

Schedule of contractual maturities

CONTRACTUAL MATURITIES OF INVESTMENT IN AVAILABLE-FOR-SALE DEBT SECURITIES
(EXCLUDING MORTGAGE-BACKED AND ASSET-BACKED SECURITIES)

	Amortized		Estimated
(In millions)	cost		fair value

Due
Within one year	$	2,162	$	2,171
After one year through five years		4,656		4,868
After five years through ten years		4,854		5,217
After ten years		17,921		20,983

Supplemental gross realized gains losses on available-for-sale investment securities

GROSS REALIZED GAINS AND LOSSES ON AVAILABLE-FOR-SALE INVESTMENT SECURITIES

	Three months ended September 30				Nine months ended September 30
(In millions)	2015		2014		2015		2014

Gains	$	21	$	1	$	122	$	37
Losses, including impairments		(6)		(5)		(41)		(18)
Net	$	15	$	(4)	$	81	$	19