Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2018		Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017
Interest Income
Interest and Fee Income, Loans and Leases Held-in-portfolio		$ 1,549		$ 1,382		$ 4,424		$ 4,009
Interest and fees on loans held for sale		22		24		67		70
Interest and Dividend Income, Securities, Available-for-sale	[1],[2]	212		191		628		560
Trading account interest and other	[2]	51		38		142		108
Total interest income		1,834		1,635		5,261		4,747
Interest Expense
Interest Expense, Deposits		193		111		484		286
Interest Expense, Long-term Debt		95		76		252		216
Interest on other borrowings		34		18		85		46
Total interest expense		322		205		821		548
Net, interest income		1,512		1,430	[3],[4]	4,440		4,199	[5],[6]
Provision for Loan, Lease, and Other Losses		61	[7]	120	[3],[4],[8]	121	[9]	330	[5],[6],[10]
Interest Income (Expense), after Provision for Loan Loss		1,451		1,310		4,319		3,869
Noninterest Income
Investment Banking Revenue	[12]	150	[11]	169	[13]	453	[14]	501	[15]
Trading Gain (Loss)		42	[11]	51	[13]	137	[14]	148	[15]
Fees and Commissions, Mortgage Banking and Servicing		43	[11]	46	[13]	138	[14]	148	[15]
commercial real estate related income		24	[11]	17	[13]	66	[14]	61	[15]
Debt and Equity Securities, Gain (Loss)		0	[11]	0	[13]	1	[14]	1	[15]
Noninterest Income, Other Operating Income		21	[11]	25	[13]	108	[14]	76	[15]
Noninterest Income		782	[11]	846	[3],[4],[13]	2,408	[14]	2,520	[5],[6],[15]
Noninterest Expense
Employee compensation		719		725		2,141		2,152
Other Labor-related Expenses		76		81		310		302
Outside processing and software		234		203		667		612
Net occupancy expense		86		94		270		280
Federal Deposit Insurance Corporation Premium Expense		39		47		118		143
Marketing and Advertising Expense		45		45		127		129
Equipment Expense		40		40		124		123
Operating losses		18		(34)		40		17
Amortization		19		22		51		49
Other Noninterest Expense		108		168		343		436
Noninterest Expense		1,384		1,391	[3],[4]	4,191		4,243	[5],[6]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest		849		765		2,536		2,146
Income Tax Expense (Benefit)		95		225		412		606
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		754		540	[3],[4]	2,124		1,540	[5],[6]
Net Income (Loss) Attributable to Noncontrolling Interest		2		2	[3],[4]	7		7	[5],[6]
Net Income (Loss) Attributable to Parent		752		538	[3],[4]	2,117		1,533	[5],[6]
Dividends, Preferred Stock, Cash		26		26		81	[16]	65	[16]
Net Income (Loss) Available to Common Stockholders, Basic		$ 726		$ 512		$ 2,036		$ 1,468
Earnings Per Share, Diluted		$ 1.56		$ 1.06		$ 4.34		$ 3.00
Earnings Per Share, Basic		1.58		1.07		4.38		3.04
Common Stock, Dividends, Per Share, Declared		$ 0.50		$ 0.40		$ 1.30		$ 0.92
Weighted Average Number of Shares Outstanding, Diluted		464,164		483,640		469,006		489,176
Weighted Average Number of Shares Outstanding, Basic		460,252		478,258		464,804		483,711
Deposit Account [Member]
Noninterest Income
Revenues		$ 144	[11]	$ 154	[13]	$ 433	[14]	$ 453	[15]
Financial Service, Other [Member]
Noninterest Income
Revenues	[12]	89	[11]	89	[13]	264	[14]	270	[15]
Credit and Debit Card [Member]
Noninterest Income
Revenues		75	[11]	86	[13]	241	[14]	255	[15]
Fiduciary and Trust [Member]
Noninterest Income
Revenues		80	[11]	79	[13]	230	[14]	229	[15]
Investment Advisory, Management and Administrative Service [Member]
Noninterest Income
Revenues		74	[11]	69	[13]	219	[14]	208	[15]
Mortgage Banking [Member]
Noninterest Income
Revenues		$ 40	[11]	$ 61	[13]	$ 118	[14]	$ 170	[15]

[1] Beginning January 1, 2018, the Company reclassified equity securities previously presented in Securities available for sale to Other assets on the Consolidated Balance Sheets and began presenting income associated with certain of these equity securities in Trading account interest and other on the Consolidated Statements of Income. For periods prior to January 1, 2018, this income was previously presented in Interest on securities available for sale and has been reclassified to Trading account interest and other for comparability.

[2] Beginning January 1, 2018, the Company reclassified equity securities previously presented in Securities available for sale to Other assets on the Consolidated Balance Sheets and began presenting income associated with certain of these equity securities in Trading account interest and other. For periods prior to January 1, 2018, this income was previously presented in Interest on securities available for sale and has been reclassified to Trading account interest and other for comparability.

[3] During the fourth quarter of 2017, the Company sold PAC, the results of which were previously reported within the Wholesale business segment. For all periods prior to January 1, 2018, PAC's financial results, including the gain on sale, have been transferred to Corporate Other for enhanced comparability of the Wholesale business segment excluding PAC.

[4] During the second quarter of 2018, certain of the Company's business banking clients were transferred from the Wholesale business segment to the Consumer business segment. For all periods prior to the second quarter of 2018, the corresponding financial results have been transferred to the Consumer business segment for comparability purposes.

[5] During the fourth quarter of 2017, the Company sold PAC, the results of which were previously reported within the Wholesale business segment. For all periods prior to January 1, 2018, PAC's financial results, including the gain on sale, have been transferred to Corporate Other for enhanced comparability of the Wholesale business segment excluding PAC.

[6] During the second quarter of 2018, certain of the Company's business banking clients were transferred from the Wholesale business segment to the Consumer business segment. For all periods prior to the second quarter of 2018, the corresponding financial results have been transferred to the Consumer business segment for comparability purposes.

[7] Provision for credit losses represents net charge-offs by segment combined with an allocation to the segments for the provision attributable to quarterly changes in the ALLL and unfunded commitment reserve balances.

[8] Provision/(benefit) for credit losses represents net charge-offs by segment combined with an allocation to the segments for the provision/(benefit) attributable to quarterly changes in the ALLL and unfunded commitment reserve balances.

[9] Provision for credit losses represents net charge-offs by segment combined with an allocation to the segments for the provision attributable to quarterly changes in the ALLL and unfunded commitment reserve balances.

[10] Provision for credit losses represents net charge-offs by segment combined with an allocation to the segments for the provision attributable to quarterly changes in the ALLL and unfunded commitment reserve balan

[11] Amounts are presented in accordance with ASC Topic 606, Revenue from Contracts with Customers, except for out of scope amounts.

[12] Beginning July 1, 2018, the Company began presenting bridge commitment fee income related to capital market transactions in Investment banking income on the Consolidated Statements of Income. For periods prior to July 1, 2018, this income was previously presented in Other charges and fees and has been reclassified to Investment banking income for comparability.

[13] Amounts for periods prior to January 1, 2018 are presented in accordance with ASC Topic 605, Revenue Recognition, and have not been restated to conform with ASC Topic 606, Revenue from Contracts with Customers.

[14] Amounts are presented in accordance with ASC Topic 606, Revenue from Contracts with Customers, except for out of scope amounts.

[15] Amounts for periods prior to January 1, 2018 are presented in accordance with ASC Topic 605, Revenue Recognition, and have not been restated to conform with ASC Topic 606, Revenue from Contracts with Customers.

[16] For the nine months ended September 30, 2018, dividends were $3,044 per share for both Series A and B Preferred Stock, $1,469 per share for Series E Preferred Stock, $4,219 per share for Series F Preferred Stock, $3,788 per share for Series G Preferred Stock, and $4,285 per share for Series H Preferred Stock.For the nine months ended September 30, 2017, dividends were $3,044 per share for both Series A and B Preferred Stock, $4,406 per share for Series E Preferred Stock, $4,219 per share for Series F Preferred Stock, and $2,090 per share for Series G Preferred Stock.