Investment Securities (Tables)

3 Months Ended

Mar. 31, 2019

Investments [Abstract]

Summary Of Investment Securities

	March 31, 2019
(In millions)	Amortized cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	764	$	4	$	6	$	762
Available-for-sale
U.S. Treasury securities	40		—		—		40
U.S. Government agencies and corporations:
Agency securities	1,407		2		11		1,398
Agency guaranteed mortgage-backed securities	10,384		36		136		10,284
Small Business Administration loan-backed securities	1,919		1		43		1,877
Municipal securities	1,270		16		3		1,283
Other debt securities	25		—		3		22
Total available-for-sale	15,045		55		196		14,904
Total investment securities	$	15,809	$	59	$	202	$	15,666

	December 31, 2018
(In millions)	Amortized cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	774	$	4	$	11	$	767
Available-for-sale
U.S. Treasury securities	40		—		—		40
U.S. Government agencies and corporations:
Agency securities	1,394		—		19		1,375
Agency guaranteed mortgage-backed securities	10,236		18		240		10,014
Small Business Administration loan-backed securities	2,042		1		47		1,996
Municipal securities	1,303		4		16		1,291
Other debt securities	25		—		4		21
Total available-for-sale debt securities	15,040		23		326		14,737
Total investment securities	$	15,814	$	27	$	337	$	15,504

Contractual Maturities Debt Securities

	March 31, 2019
	Held-to-maturity				Available-for-sale
(In millions)	Amortized cost		Estimated fair value		Amortized cost		Estimated fair value
Due in one year or less	$	252	$	252	$	2,147	$	2,125
Due after one year through five years	329		328		5,984		5,928
Due after five years through ten years	132		132		4,441		4,406
Due after ten years	51		50		2,473		2,445
Total debt investment securities	$	764	$	762	$	15,045	$	14,904

Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value

	March 31, 2019
	Less than 12 months				12 months or more				Total
(In millions)	Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	—	$	24	$	6	$	415	$	6	$	439
Available-for-sale
U.S. Government agencies and corporations:
Agency securities	—		46		11		994		11		1,040
Agency guaranteed mortgage-backed securities	2		270		134		6,799		136		7,069
Small Business Administration loan-backed securities	13		876		30		898		43		1,774
Municipal securities	—		40		3		458		3		498
Other	—		—		3		12		3		12
Total available-for-sale	15		1,232		181		9,161		196		10,393
Total investment securities	$	15	$	1,256	$	187	$	9,576	$	202	$	10,832

	December 31, 2018
	Less than 12 months				12 months or more				Total
(In millions)	Gross unrealized losses		Estimated  fair  value		Gross unrealized losses		Estimated  fair  value		Gross unrealized losses		Estimated  fair  value
Held-to-maturity
Municipal securities	$	1	$	86	$	10	$	438	$	11	$	524
Available-for-sale
U.S. Government agencies and corporations:
Agency securities	2		245		17		913		19		1,158
Agency guaranteed mortgage-backed securities	16		1,081		224		6,661		240		7,742
Small Business Administration loan-backed securities	19		1,180		28		711		47		1,891
Municipal securities	2		266		14		641		16		907
Other	—		—		4		11		4		11
Total available-for-sale	39		2,772		287		8,937		326		11,709
Total investment securities	$	40	$	2,858	$	297	$	9,375	$	337	$	12,233

Gains And Losses, Including OTTI, Recognized In Statement Of Income

	Three Months Ended March 31,
	2019				2018
(In millions)	Gross gains		Gross losses		Gross gains		Gross losses
Investment securities:
Other noninterest-bearing investments	$	4	$	3	$	1	$	1
Net gains 1			$	1			$	—

¹ Net gains were recognized in securities gains (losses), net in the statement of income.

Tax and Nontaxable Interest Income by Investment Type [Table Text Block]

	Three Months Ended March 31,
(In millions)	2019						2018
	Taxable		Nontaxable		Total		Taxable		Nontaxable		Total
Investment securities:
Held-to-maturity	$	2	$	4	$	6	$	2	$	4	$	6
Available-for-sale	83		6		89		73		6		79
Trading	—		1		1		—		1		1
Total securities	$	85	$	11	$	96	$	75	$	11	$	86