Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017
Cash flows from operating activities:
Net income before noncontrolling interests (2)	$ 16,722		$ 16,219	[1],[2],[3]
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,223		1,877
Changes in fair value of MSRs, MLHFS and LHFS carried at fair value	(1,057)		828
Depreciation, amortization and accretion	4,222		3,794
Other net (gains) losses (1)(2)	(8,919)		284	[2],[4]
Stock-based compensation	1,859		1,595
Originations and purchases of mortgage loans held for sale (1)	(120,006)		(134,319)	[4]
Proceeds from sales of and paydowns on mortgage loans held for sale (1)	90,714		97,059	[4]
Net change in:
Debt and equity securities, held for trading (1)	24,709		28,572	[4]
Loans held for sale (1)	(530)		163	[4]
Deferred income taxes	940		1,748
Derivative assets and liabilities (2)	315		(4,038)	[2]
Other assets (2)	9,738		2,176	[2]
Other accrued expenses and liabilities (2)	1,109		2,386	[2]
Net cash provided by operating activities	21,039		18,344
Net change in:
Federal funds sold and securities purchased under resale agreements (3)	(4,448)		(8,562)	[5]
Available-for-sale debt securities:
Proceeds from sales (1)	7,088		37,069	[4]
Prepayments and maturities (1)	28,360		35,387	[4]
Purchases (1)	(41,495)		(74,248)	[4]
Held-to-maturity debt securities:
Paydowns and maturities	8,509		7,557
Equity securities, not held for trading:
Proceeds from sales and capital returns (1)	4,481		3,979	[4]
Purchases (1)	(3,937)		(2,588)	[4]
Loans:
Loans originated by banking subsidiaries, net of principal collected (4)	(2,965)		5,568	[6]
Proceeds from sales (including participations) of loans held for investment	12,356		8,473
Purchases (including participations) of loans	(896)		(2,436)
Principal collected on nonbank entities’ loans (4)	5,110		5,968	[6]
Loans originated by nonbank entities (4)	(5,760)		(4,199)	[6]
Net cash paid for acquisitions	(10)		(23)
Proceeds from sales of foreclosed assets and short sales	2,781		4,175
Other, net	1,317		(1,336)
Net cash provided by investing activities	10,491		14,784
Net change in:
Deposits	(69,371)		627
Short-term borrowings	2,195		4,655
Long-term debt:
Proceeds from issuance	31,397		38,358
Repayment	(29,419)		(60,103)
Preferred stock:
Proceeds from Issuance	0		677
Redeemed	(2,150)		0
Cash dividends paid	(1,211)		(1,226)
Common stock:
Proceeds from issuance	548		905
Stock tendered for payment of withholding taxes	(322)		(376)
Repurchased	(13,334)		(7,063)
Cash dividends paid	(5,730)		(5,605)
Net change in noncontrolling interests	(364)		(72)
Other, net	(193)		(94)
Net cash used by financing activities	(87,954)		(29,317)
Net change in cash, cash equivalents, and restricted cash (3)	(56,424)		3,811	[5]
Cash, cash equivalents, and restricted cash at beginning of period (3)	215,947	[7]	221,043	[5]
Cash, cash equivalents, and restricted cash at end of period (3)	159,523		224,854	[5]
Supplemental cash flow disclosures:
Cash paid for interest	10,108		6,514
Cash paid for income taxes	$ 1,921		$ 4,687

[1] (2)Financial information for the prior period has been revised to reflect the impact of the adoption of ASU 2017-12 – Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, effective January 1, 2017.

[2] (2)Financial information for the prior period has been revised to reflect the impact of the adoption of ASU 2017-12 – Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, effective January 1, 2017.

[3] (5)Financial information for the prior period has been revised to reflect the impact of the adoption of ASU 2017-12 – Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, effective January 1, 2017.

[4] (1)Financial information for the prior period has been revised to reflect the impact of the adoption in first quarter 2018 of ASU 2016-01 – Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. See Note 1 (Summary of Significant Accounting Policies) for more information.

[5] (3)Financial information has been revised to reflect the impact of the adoption in first quarter 2018 of ASU 2016-18 – Statement of Cash Flows (Topic 230): Restricted Cash in which we changed the presentation of our cash and cash equivalents to include both cash and due from banks as well as interest-earning deposits with banks, which are inclusive of any restricted cash. See Note 1 (Summary of Significant Accounting Policies) for more information.

[6] (4)Prior periods have been revised to reflect classification changes due to entity restructuring activities.

[7] (1)Financial information has been revised to reflect the impact of the adoption in first quarter 2018 of ASU 2016-18 – Statement of Cash Flows (Topic 230): Restricted Cash in which we changed the presentation of our cash and cash equivalents to include both cash and due from banks as well as interest-earning deposits with banks, which are inclusive of any restricted cash. See Note 1 (Summary of Significant Accounting Policies) for more information.