Segments (Results of Operations and Average Assets by Segment) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017		Mar. 31, 2016		Dec. 31, 2016
Segment Reporting Information
Net interest income		$ 933		$ 903	[1]
Provision for (benefit from) loan and lease losses		74		119	[1]
Net interest income after provision for loan and lease losses		859		784	[1]
Total noninterest income		523		637	[1]
Total noninterest expense		986		986	[1]
Income (Loss) Before Income Taxes		396		435	[1]
Applicable income tax expense (benefit)		91		109	[1]
Net income (loss)		305		326	[1],[2]
Less: Net income attributable to noncontrolling interests		0		0	[1]
Net income (loss) attributable to Bancorp		305		326	[1],[3]
Dividends on preferred stock		15		15	[1],[3]
Net income (loss) available to common shareholders		290		311	[1],[3]
Total goodwill		2,419		2,416		$ 2,416
Total Assets		140,200		142,430		$ 142,177
Intersegment Elimination
Segment Reporting Information
Total noninterest income	[4]	(34)		(33)
Total noninterest expense		(34)		(33)
Commercial Banking
Segment Reporting Information
Net interest income		425		451
Provision for (benefit from) loan and lease losses		6		65
Net interest income after provision for loan and lease losses		419		386
Total noninterest income		202	[5]	223
Total noninterest expense		370		363
Income (Loss) Before Income Taxes		251		246
Applicable income tax expense (benefit)		40		35
Net income (loss)		211		211
Less: Net income attributable to noncontrolling interests		0		0
Net income (loss) attributable to Bancorp		211		211
Dividends on preferred stock		0		0
Net income (loss) available to common shareholders		211		211
Total goodwill		613		613
Total Assets		57,672		59,652
Branch Banking
Segment Reporting Information
Net interest income		430		426
Provision for (benefit from) loan and lease losses		42		34
Net interest income after provision for loan and lease losses		388		392
Total noninterest income		184	[6]	189	[7]
Total noninterest expense		402		411
Income (Loss) Before Income Taxes		170		170
Applicable income tax expense (benefit)		60		60
Net income (loss)		110		110
Less: Net income attributable to noncontrolling interests		0		0
Net income (loss) attributable to Bancorp		110		110
Dividends on preferred stock		0		0
Net income (loss) available to common shareholders		110		110
Total goodwill		1,655		1,655
Total Assets		57,876		54,528
Consumer Lending
Segment Reporting Information
Net interest income		61		60
Provision for (benefit from) loan and lease losses		15		12
Net interest income after provision for loan and lease losses		46		48
Total noninterest income		55		83
Total noninterest expense		120		118
Income (Loss) Before Income Taxes		(19)		13
Applicable income tax expense (benefit)		(7)		5
Net income (loss)		(12)		8
Less: Net income attributable to noncontrolling interests		0		0
Net income (loss) attributable to Bancorp		(12)		8
Dividends on preferred stock		0		0
Net income (loss) available to common shareholders		(12)		8
Total goodwill		0		0
Total Assets		21,994		22,475
Wealth and Asset Management
Segment Reporting Information
Net interest income		38		43
Provision for (benefit from) loan and lease losses		4		0
Net interest income after provision for loan and lease losses		34		43
Total noninterest income		106		100
Total noninterest expense		113		107
Income (Loss) Before Income Taxes		27		36
Applicable income tax expense (benefit)		10		13
Net income (loss)		17		23
Less: Net income attributable to noncontrolling interests		0		0
Net income (loss) attributable to Bancorp		17		23
Dividends on preferred stock		0		0
Net income (loss) available to common shareholders		17		23
Total goodwill		151		148
Total Assets		9,641		8,900
General Corporate and Other
Segment Reporting Information
Net interest income		(21)		(77)	[8]
Provision for (benefit from) loan and lease losses		7		8	[8]
Net interest income after provision for loan and lease losses		(28)		(85)	[8]
Total noninterest income		10		75	[8]
Total noninterest expense		15		20	[8]
Income (Loss) Before Income Taxes		(33)		(30)	[8]
Applicable income tax expense (benefit)		(12)		(4)	[8]
Net income (loss)		(21)		(26)	[8]
Less: Net income attributable to noncontrolling interests		0		0	[8]
Net income (loss) attributable to Bancorp		(21)		(26)	[8]
Dividends on preferred stock		15		15	[8]
Net income (loss) available to common shareholders		(36)		(41)	[8]
Total goodwill		0		0	[8]
Total Assets		$ (6,983)	[9]	$ (3,125)	[8],[10]

[1] A net tax deficiency of $ 1 million was reclassified from capital surplus to applicable income tax expense and average common shares outstanding – diluted were adjusted at March 31, 2016, related to the early adoption of ASU 2016-09 during the fourth quarter of 2016, with an effective date of January 1, 2016.

[2] A net tax deficiency of $1 million was reclassified from capital surplus to applicable income tax expense at March 31, 2016, related to the early adop tion of ASU 2016-09 during the fourth quarter of 2016, with an effective date of January 1, 2016.

[3] A net tax deficiency of $1 million was reclassified from capital surplus to applicable income tax expense and average common shares outstanding – diluted were adjusted at March 31, 2016, related to the early adoption of ASU 2016-09 during the fourth quarter of 2016, with an effective date of January 1, 2016 .

[4] Revenue sharing agreements between wealth and asset management and branch banking are eliminated in the Condensed Consolidated Statements of Income.

[5] Includes impairment charges of $ 31 for operating lease equipment. For more information refer to Note 8 and Note 19.

[6] Includes impairment charges of $3 for branches and land. For more information refer to Note 7 and Note 19.

[7] Includes impairment charges of $ 2 for branches and land. For more information, refer to Note 7 and Note 19.

[8] A net tax deficiency of $ 1 million was reclassified from capital surplus to applicable income tax expense at March 31, 2016, related to the early adoption of ASU 2016-09 during the fourth quarter of 2016, with an effective date of January 1, 2016.

[9] Includes bank premises and equipment of $ 51 classified as h eld for sale. For more information, refer to Note 7

[10] Includes bank premises and equipment of $ 68 classified as held for sale. For more information, refer to Note 7 .