State Street (STT) 10-Q 3 Nov 16 2016 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 31, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	STATE STREET Corp
Entity Central Index Key	93,751
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		385,734,628

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fee revenue:
Servicing fees	$ 1,303	$ 1,289	$ 3,784	$ 3,876
Management fees	368	287	931	892
Trading services	267	294	806	899
Securities finance	136	113	426	369
Processing fees and other	5	120	155	198
Total fee revenue	2,079	2,103	6,102	6,234
Net interest revenue:
Interest revenue	647	614	1,896	1,885
Interest expense	110	101	326	291
Net interest revenue	537	513	1,570	1,594
Gains (losses) related to investment securities, net:
Net gains (losses) from sales of available-for-sale securities	6	(2)	7	(5)
Losses from other-than-temporary impairment	(2)	0	(2)	(1)
Gains (losses) related to investment securities, net	4	(2)	5	(6)
Total revenue	2,620	2,614	7,677	7,822
Provision for loan losses	0	5	8	11
Expenses:
Compensation and employee benefits	1,013	1,051	3,109	3,122
Information systems and communications	285	265	827	761
Transaction processing services	200	201	601	599
Occupancy	107	110	331	332
Acquisition and restructuring costs	42	10	166	19
Professional services	95	136	270	368
Amortization of other intangible assets	55	48	153	147
Other	187	141	437	845
Total expenses	1,984	1,962	5,894	6,193
Income before income tax expense	636	647	1,775	1,618
Income tax expense	72	67	226	215
Net income (loss) from non-controlling interest	(1)	1	1	1
Net income	563	581	1,550	1,404
Net income available to common shareholders	$ 507	$ 539	$ 1,411	$ 1,301
Earnings per common share:
Basic (in USD per share)	$ 1.31	$ 1.33	$ 3.58	$ 3.18
Diluted (in USD per share)	$ 1.29	$ 1.31	$ 3.54	$ 3.13
Average common shares outstanding (in thousands):
Basic (in shares)	388,358	406,612	393,959	409,816
Diluted (in shares)	393,212	412,167	398,413	415,772
Cash dividends declared (in USD per share)	$ 0.38	$ 0.34	$ 1.06	$ 0.98

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 563	$ 581	$ 1,550	$ 1,404
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of ($14), ($51), ($24) and ($76), respectively	38	(145)	132	(555)
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes of ($11), $27, $347 and ($48), respectively	(13)	37	533	(106)
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes of $9, ($10), ($6) and ($5), respectively	13	(16)	(9)	(9)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of $1, $2, $3 and $6, respectively	2	4	5	11
Net unrealized gains (losses) on cash flow hedges, net of related taxes of ($27), $17, ($144) and $39, respectively	(39)	26	(213)	46
Net unrealized gains (losses) on retirement plans, net of related taxes of ($1), $3, $2 and $4, respectively	3	4	1	19
Other comprehensive income (loss)	4	(90)	449	(594)
Total comprehensive income	$ 567	$ 491	$ 1,999	$ 810

Consolidated Statement of Comp4

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Foreign currency translation, Taxes	$ (14)	$ (51)	$ (24)	$ (76)
Change in net unrealized losses on available-for-sale securities, Taxes	(11)	27	347	(48)
Change in net unrealized losses on available-for-sale securities designated in fair value hedges, Taxes	9	(10)	(6)	(5)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, Taxes	1	2	3	6
Change in net unrealized losses on cash flow hedges, Taxes	(27)	17	(144)	39
Change in unrealized losses on retirement plans, Taxes	$ (1)	$ 3	$ 2	$ 4

Consolidated Statement of Condi

Consolidated Statement of Condition - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Assets:
Cash and due from banks	$ 3,490	$ 1,207
Interest-bearing deposits with banks	79,090	75,338
Securities purchased under resale agreements	2,442	3,404
Trading account assets	1,063	849
Investment securities available-for-sale	71,520	70,070
Investment securities held-to-maturity (fair value of $28,780 and $29,798)	28,368	29,952
Loans and leases (less allowance for losses of $51 and $46)	21,451	18,753
Premises and equipment (net of accumulated depreciation of $3,271 and $4,820)	2,042	1,894
Accrued interest and fees receivable	2,594	2,346
Goodwill	5,911	5,671
Other intangible assets	1,849	1,768
Other assets	36,320	33,903
Total assets	256,140	245,155
Deposits:
Noninterest-bearing	60,545	65,800
Interest-bearing—U.S.	33,767	29,958
Interest-bearing—non-U.S.	104,454	95,869
Total deposits	198,766	191,627
Securities sold under repurchase agreements	4,364	4,499
Federal funds purchased	28	6
Other short-term borrowings	1,385	1,748
Accrued expenses and other liabilities	17,582	14,643
Long-term debt	11,834	11,497
Total liabilities	233,959	224,020
Commitments, guarantees and contingencies (Notes 9 and 10)
Shareholders’ equity:
Common stock, $1 par: 750,000,000 shares authorized; 503,879,642 and 503,879,642 shares issued	504	504
Surplus	9,778	9,746
Retained earnings	17,047	16,049
Accumulated other comprehensive income (loss)	(993)	(1,442)
Treasury stock, at cost (118,309,341 and 104,227,647 shares)	(7,382)	(6,457)
Total shareholders’ equity	22,150	21,103
Non-controlling interest-equity	31	32
Total equity	22,181	21,135
Total liabilities and equity	256,140	245,155
Series C Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, and Series G, 5,000 shares issued and outstanding	491	491
Series D Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, and Series G, 5,000 shares issued and outstanding	742	742
Series E Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, and Series G, 5,000 shares issued and outstanding	728	728
Series F Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, and Series G, 5,000 shares issued and outstanding	742	742
Series G Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, and Series G, 5,000 shares issued and outstanding	$ 493	$ 0

Consolidated Statement of Cond6

Consolidated Statement of Condition (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Investment securities held-to-maturity, fair value	$ 28,780	$ 29,798
Loans and leases, allowance for losses	51	46
Premises and equipment, accumulated depreciation	$ 3,271	$ 4,820
Stockholders' Equity:
Preferred stock, no par value (in USD per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	3,500,000	3,500,000
Common stock, par value (in USD per share)	$ 1	$ 1
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	503,879,642	503,879,642
Treasury stock, shares	118,309,341	104,227,647
Series C Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued	5,000	5,000
Preferred stock, shares outstanding	5,000	5,000
Series D Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued	7,500	7,500
Preferred stock, shares outstanding	7,500	7,500
Series E Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued	7,500	7,500
Preferred stock, shares outstanding	7,500	7,500
Series F Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued	7,500	7,500
Preferred stock, shares outstanding	7,500	7,500
Series G Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued	5,000	0
Preferred stock, shares outstanding	5,000	0

Consolidated Statement of Chang

Consolidated Statement of Changes In Shareholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	PREFERRED STOCK	COMMON STOCK	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	TREASURY STOCK
Beginning balance at Dec. 31, 2014	$ 21,328	$ 1,961	$ 504	$ 9,791	$ 14,737	$ (507)	$ (5,158)
Beginning balance (shares) at Dec. 31, 2014			503,880				88,685
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,404				1,404
Other comprehensive income (loss)	(594)					(594)
Preferred stock issued	742	742
Cash dividends declared:
Common stock dividends	(401)				(401)
Preferred stock cash dividend	(101)				(101)
Common stock acquired	(1,170)						$ (1,170)
Common stock acquired (shares)							15,552
Common stock awards and options exercised, including related taxes	140			(45)			$ 185
Common stock awards and options exercised, including related taxes (shares)							(4,148)
Other	(5)			(4)	(1)
Other (shares)							(2)
Ending balance (shares) at Sep. 30, 2015			503,880				100,087
Ending balance at Sep. 30, 2015	21,343	2,703	$ 504	9,742	15,638	(1,101)	$ (6,143)
Beginning balance at Dec. 31, 2015	21,103	2,703	$ 504	9,746	16,049	(1,442)	$ (6,457)
Beginning balance (shares) at Dec. 31, 2015			503,880				104,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,550				1,550
Other comprehensive income (loss)	449					449
Preferred stock issued	493	493
Cash dividends declared:
Common stock dividends	(414)				(414)
Preferred stock cash dividend	(137)				(137)
Common stock acquired	(1,040)						$ (1,040)
Common stock acquired (shares)							16,861
Common stock awards and options exercised, including related taxes	146			32			$ 114
Common stock awards and options exercised, including related taxes (shares)							(2,765)
Other	0				(1)		$ 1
Other (shares)							(15)
Ending balance (shares) at Sep. 30, 2016			503,880				118,309
Ending balance at Sep. 30, 2016	$ 22,150	$ 3,196	$ 504	$ 9,778	$ 17,047	$ (993)	$ (7,382)

Consolidated Statement of Chan8

Consolidated Statement of Changes In Shareholders' Equity (Parenthetical) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in USD per share)	$ 1.06	$ 0.98
Common stock awards and options exercised, related taxes	$ 6	$ 57

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Activities:
Net income	$ 1,550	$ 1,404
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred income tax expense (benefit)	31	(12)
Amortization of other intangible assets	153	147
Other non-cash adjustments for depreciation, amortization and accretion, net	517	444
(Gains) losses related to investment securities, net	(5)	6
Change in trading account assets, net	(214)	(299)
Change in accrued interest and fees receivable, net	(248)	(29)
Change in collateral deposits, net	(615)	(8,077)
Change in unrealized losses on foreign exchange derivatives, net	853	434
Change in other assets, net	(457)	687
Change in accrued expenses and other liabilities, net	399	128
Other, net	312	385
Net cash provided by (used in) operating activities	2,276	(4,782)
Investing Activities:
Net (increase) decrease in interest-bearing deposits with banks	(3,752)	25,162
Net decrease (increase) in securities purchased under resale agreements	962	(6,765)
Proceeds from sales of available-for-sale securities	424	12,417
Proceeds from maturities of available-for-sale securities	21,564	20,258
Purchases of available-for-sale securities	(22,625)	(19,494)
Proceeds from maturities of available-for-sale securities	7,184	2,835
Purchases of held-to-maturity securities	(5,581)	(2,962)
Net increase in loans and leases	(2,678)	(837)
Business acquisitions	(437)	0
Purchases of equity investments and other long-term assets	(265)	(353)
Purchases of premises and equipment, net	(477)	(543)
Other, net	129	75
Net cash (used in) provided by investing activities	(5,552)	29,793
Financing Activities:
Net (decrease) increase in time deposits	9,077	(5,933)
Net decrease in all other deposits	(1,938)	(16,740)
Net decrease in other short-term borrowings	(476)	(1,781)
Proceeds from issuance of long-term debt, net of issuance costs	1,492	2,995
Payments for long-term debt and obligations under capital leases	(1,430)	(914)
Proceeds from issuance of preferred stock, net	493	742
Proceeds from exercises of common stock options	0	4
Purchases of common stock	(1,029)	(961)
Excess tax benefit related to stock-based compensation	6	60
Repurchases of common stock for employee tax withholding	(95)	(189)
Payments for cash dividends	(541)	(489)
Net cash provided by (used in) financing activities	5,559	(23,206)
Net increase	2,283	1,805
Cash and due from banks at beginning of period	1,207	1,855
Cash and due from banks at end of period	$ 3,490	$ 3,660

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation: The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the parent company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis. Our principal banking subsidiary is State Street Bank. The accompanying Consolidated Financial Statements should be read in conjunction with the financial and risk factor information included in our 2015 Form 10-K, which we previously filed with the SEC. The consolidated financial statements accompanying these condensed notes are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair statement of the consolidated results of operations in these financial statements, have been made. Certain previously reported amounts presented in this Form 10-Q have been reclassified to conform to current-period presentation. Events occurring subsequent to the date of our consolidated statement of condition were evaluated for potential recognition or disclosure in our consolidated financial statements through the date we filed this Form 10-Q with the SEC. The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue, and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates. These accounting estimates reflect the best judgment of management, but actual results could differ. Our consolidated statement of condition as of December 31, 2015 included in the accompanying consolidated financial statements was derived from the audited financial statements as of that date, but does not include all notes required by U.S. GAAP for a complete set of consolidated financial statements. Acquisition On July 1, 2016, we completed our acquisition of GE Asset Management ("GEAM") from General Electric Company, with a total initial purchase price of approximately $437 million and approximately $46 million in potential incremental purchase price related to future opportunities with General Electric. The acquisition of GEAM extends our core investment management capabilities, including in the high growth OCIO markets, and enhances our capabilities in connection with the delivery of value-added solutions to our client base. AUM associated with the acquired GEAM operations was $112 billion as of September 30, 2016. We accounted for this acquisition as a business combination and, in accordance with ASC Topic 805, Business Combinations , we have recorded assets acquired and liabilities assumed at their respective fair values as of the acquisition date. Our consolidated financial statements include the operating results for the acquired business from the date of acquisition, July 1, 2016. Recent Accounting Developments: Relevant standards that were recently issued but not yet adopted Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2014-09, Revenue from Contracts with Customers (Topic 606) The standard, and its related amendments, will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements with customers. It may be adopted either retrospectively or on a modified retrospective basis to new contracts and existing contracts with remaining performance obligations as of the effective date. January 1, 2018 We are currently assessing the impact of the standard and its amendments on our consolidated financial statements and evaluating the alternative methods of adoption. ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The standard makes limited amendments to the guidance on the classification and measurement of financial instruments. Under the new standard, all equity securities will be measured at fair value through earnings with certain exceptions, including investments accounted for under the equity method of accounting. In addition, the FASB clarified the guidance related to valuation allowance assessments when recognizing deferred tax assets on unrealized losses on available-for-sale debt securities. This standard must be applied on a retrospective basis. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-02, Leases (Topic 842) The standard represents a wholesale change to lease accounting and requires all leases, other than short-term leases, to be reported on balance sheet through recognition of a right-of-use asset and a corresponding liability for future lease obligations. The standard also requires extensive disclosures for assets, expenses, and cash flows associated with leases, as well as a maturity analysis of lease liabilities. January 1, 2019 We are currently assessing the impact of the standard on our consolidated financial statements, but we anticipate an increase in assets and liabilities due to the recognition of the required right-of-use asset and corresponding liability for all lease obligations that are currently classified as operating leases, as well as additional disclosure on our leases. ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships (a consensus of the Emerging Issues Task Force) The standard clarifies that a change in the counterparty to a derivative instrument that is designated as a hedging instrument would result in dedesignation of the hedging relationship. This may be applied on a prospective or modified retrospective basis. January 1, 2017 Our adoption of the standard will not have a material impact on our consolidated financial statements. ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting The standard simplifies the guidance related to stock compensation, including the accounting for income taxes by eliminating the windfall pool and requiring recognition of all excess tax benefits and deficiencies within the statement of income, as well as changes in the accounting for forfeitures, classification in the statement of cash flows and tax withholding requirements. January 1, 2017 We anticipate increased income statement volatility due to the recognition of all excess tax benefits and deficiencies within the statement of income. We do not anticipate early adoption of this standard. ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard requires all expected credit losses for financial assets held at the reporting date to be measured based on historical experience, current conditions, and reasonable supportable forecasts. The standard will utilize forward-looking information to determine credit loss estimates. It will require immediate recognition of the full amount of credit losses that are expected for certain financial assets. January 1, 2020 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) The standard amends the statement of cash flow guidance to address specific cash flow issues with the objective of reducing the existing diversity in practice. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements, however based on our current presentation we do not anticipate a significant change to our financial statement presentation of the statement of cash flows. Relevant standards that were adopted during the nine months ended September 30, 2016: We adopted ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, effective January 1, 2016. The implementation of the new standard did not result in any changes to our previous consolidation conclusions. We adopted ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs , effective January 1, 2016 with retrospective application for all prior periods presented. The implementation of this standard resulted in debt issuance costs of $40 million and $37 million as of September 30, 2016 and December 31, 2015, respectively, being netted against long-term debt in our consolidated statement of condition.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair-Value Measurements: We carry trading account assets, AFS investment securities and various types of derivative financial instruments at fair value in our consolidated statement of condition on a recurring basis. Changes in the fair values of these financial assets and liabilities are recorded either as components of our consolidated statement of income or as components of AOCI within shareholders' equity in our consolidated statement of condition. We measure fair value for the above-described financial assets and liabilities in conformity with U.S. GAAP that governs the measurement of the fair value of financial instruments. Management believes that its valuation techniques and underlying assumptions used to measure fair value conform to the provisions of U.S. GAAP. We categorize the financial assets and liabilities that we carry at fair value based on a prescribed three-level valuation hierarchy. For information about our valuation techniques for financial assets and financial liabilities measured at fair value and the fair value hierarchy, refer to Note 2 to the consolidated financial statements on pages 132 to 142 of our 2015 Form 10-K. The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated. No transfers of financial assets or liabilities between levels 1 and 2 occurred in the nine months ended September 30, 2016 or the year ended December 31, 2015 . Fair-Value Measurements on a Recurring Basis as of September 30, 2016 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 57 $ — $ — $ 57 Non-U.S. government securities 425 — — 425 Other 44 537 — 581 Total trading account assets 526 537 — 1,063 AFS Investment securities: U.S. Treasury and federal agencies: Direct obligations 4,846 456 — 5,302 Mortgage-backed securities — 17,945 50 17,995 Asset-backed securities: Student loans — 7,115 192 7,307 Credit cards — 1,375 — 1,375 Sub-prime — 354 — 354 Other (2) — — 1,273 1,273 Total asset-backed securities — 8,844 1,465 10,309 Non-U.S. debt securities: Mortgage-backed securities — 7,071 90 7,161 Asset-backed securities — 2,391 138 2,529 Government securities — 5,984 — 5,984 Other (3) — 5,461 458 5,919 Total non-U.S. debt securities — 20,907 686 21,593 State and political subdivisions — 10,716 40 10,756 Collateralized mortgage obligations — 2,704 102 2,806 Other U.S. debt securities — 2,338 — 2,338 U.S. equity securities — 41 — 41 Non-U.S. equity securities — 3 — 3 U.S. money-market mutual funds — 361 — 361 Non-U.S. money-market mutual funds — 16 — 16 Total investment securities available-for-sale 4,846 64,331 2,343 71,520 Other assets: Derivative instruments: Foreign exchange contracts — 8,137 — $ (4,679 ) 3,458 Interest-rate contracts — 239 — (194 ) 45 Other derivative contracts — 3 — (3 ) — Total derivative instruments — 8,379 — (4,876 ) 3,503 Other 409 — — — 409 Total assets carried at fair value $ 5,781 $ 73,247 $ 2,343 $ (4,876 ) $ 76,495 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: U.S. government securities $ 15 $ — $ — $ — $ 15 Non-U.S. government securities 60 — — — 60 Other 32 6 — — 38 Derivative instruments: Foreign exchange contracts — 7,901 — (4,636 ) 3,265 Interest-rate contracts — 189 — (39 ) 150 Other derivative contracts — 150 — (3 ) 147 Total derivative instruments — 8,240 — (4,678 ) 3,562 Other 409 — — — 409 Total liabilities carried at fair value $ 516 $ 8,246 $ — $ (4,678 ) $ 4,084 (1) R epresents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between State Street and the counterparty. Netting also reflects asset and liability reductions of $929 million and $731 million , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of September 30, 2016 , the fair value of other asset-backed securities was primarily composed of $1.27 billion of collateralized loan obligations. (3) As of September 30, 2016 , the fair value of other non-U.S. debt securities was primarily composed of $3.98 billion of covered bonds and $981 million of corporate bonds. Fair-Value Measurements on a Recurring Basis as of December 31, 2015 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 32 $ — $ — $ 32 Non-U.S. government securities 479 — — 479 Other 10 328 — 338 Total trading account assets 521 328 — 849 AFS Investment securities: U.S. Treasury and federal agencies: Direct obligations 5,206 512 — 5,718 Mortgage-backed securities — 18,165 — 18,165 Asset-backed securities: Student loans — 6,987 189 7,176 Credit cards — 1,341 — 1,341 Sub-prime — 419 — 419 Other (2) — — 1,764 1,764 Total asset-backed securities — 8,747 1,953 10,700 Non-U.S. debt securities: Mortgage-backed securities — 7,071 — 7,071 Asset-backed securities — 3,093 174 3,267 Government securities — 4,355 — 4,355 Other (3) — 4,579 255 4,834 Total non-U.S. debt securities — 19,098 429 19,527 State and political subdivisions — 9,713 33 9,746 Collateralized mortgage obligations — 2,948 39 2,987 Other U.S. debt securities — 2,614 10 2,624 U.S. equity securities — 39 — 39 Non-U.S. equity securities — 3 — 3 U.S. money-market mutual funds — 542 — 542 Non-U.S. money-market mutual funds — 19 — 19 Total investment securities available-for-sale 5,206 62,400 2,464 70,070 Other assets: Derivatives instruments: Foreign exchange contracts — 11,311 5 $ (6,562 ) 4,754 Interest-rate contracts — 135 — (115 ) 20 Other derivative contracts — 5 — (2 ) 3 Total derivative instruments — 11,451 5 (6,679 ) 4,777 Other 2 — — — 2 Total assets carried at fair value $ 5,729 $ 74,179 $ 2,469 $ (6,679 ) $ 75,698 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: U.S. government securities $ 5 $ — $ — $ — $ 5 Non-U.S. government securities 76 — — — 76 Other 5 13 — — 18 Derivative instruments: Foreign exchange contracts — 10,863 5 (6,995 ) 3,873 Interest-rate contracts — 182 — (24 ) 158 Other derivative contracts — 103 — (2 ) 101 Total derivative instruments — 11,148 5 (7,021 ) 4,132 Other 2 — — — 2 Total liabilities carried at fair value $ 88 $ 11,161 $ 5 $ (7,021 ) $ 4,233 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between State Street and the counterparty. Netting also reflects asset and liability reductions of $776 million and $1.12 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2015 , the fair value of other asset-backed securities was primarily composed of $1.76 billion of collateralized loan obligations. (3) As of December 31, 2015 , the fair value of other non-U.S. debt securities was primarily composed of $3.18 billion of covered bonds and $613 million of corporate bonds. The following tables present activity related to our level-3 financial assets and liabilities during the three and nine months ended September 30, 2016 and 2015 , respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During the three and nine months ended September 30, 2016 and 2015 , transfers out of level 3 were mainly related to certain mortgage- and asset-backed securities, including non-U.S. debt securities, for which fair value was measured using prices for which observable market information became available. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2016 Fair Value as of Total Realized and Purchases Settlements Transfers Fair Value as of September 30, 2016 (1) Change in (In millions) Recorded Recorded Assets: AFS Investment securities: U.S. Treasury and federal agencies, mortgage-backed securities $ 25 $ — $ — $ 25 $ — $ — $ 50 Asset-backed securities: Student loans 190 — 2 — — — 192 Other 1,710 13 (8 ) 118 (560 ) — 1,273 Total asset-backed securities 1,900 13 (6 ) 118 (560 ) — 1,465 Non-U.S. debt securities: Mortgage-backed securities — — — 90 — — 90 Asset-backed securities 111 — — 90 (9 ) (54 ) 138 Other 261 — — 194 3 — 458 Total non-U.S. debt securities 372 — — 374 (6 ) (54 ) 686 State and political subdivisions 33 — 7 — — — 40 Collateralized mortgage obligations 68 — 1 36 (3 ) — 102 Total AFS investment securities 2,398 13 2 553 (569 ) (54 ) 2,343 Total assets carried at fair value $ 2,398 $ 13 $ 2 $ 553 $ (569 ) $ (54 ) $ 2,343 $ — (1) There were no transfers of assets into level 3 during the three months ended September 30, 2016 . There was no activity related to our level-3 financial liabilities during the three months ended September 30, 2016 . Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2016 Fair Value as of Total Realized and Purchases Settlements Transfers out of Level 3 Fair Value as of September 30, 2016 (1) Change in (In millions) Recorded in Revenue Recorded in Other Comprehensive Income Assets: AFS Investment securities: U.S. Treasury and federal agencies, mortgage-backed securities $ — $ — $ — $ 325 $ — $ (275 ) $ 50 Asset-backed securities: Student loans 189 1 2 — — — 192 Other 1,764 29 (21 ) 250 (749 ) — 1,273 Total asset-backed securities 1,953 30 (19 ) 250 (749 ) — 1,465 Non-U.S. debt securities: Mortgage-backed securities — — — 90 — — 90 Asset-backed securities 174 — (1 ) 196 (43 ) (188 ) 138 Other 255 — — 223 9 (29 ) 458 Total Non-U.S. debt securities 429 — (1 ) 509 (34 ) (217 ) 686 State and political subdivisions 33 — 9 — (2 ) — 40 Collateralized mortgage obligations 39 — 2 86 (25 ) — 102 Other U.S. debt securities 10 — — — (10 ) — — Total AFS investment securities 2,464 30 (9 ) 1,170 (820 ) (492 ) 2,343 Other assets: Derivative instruments: Foreign exchange contracts 5 3 — — (8 ) — — $ — Total derivative instruments 5 3 — — (8 ) — — — Total assets carried at fair value $ 2,469 $ 33 $ (9 ) $ 1,170 $ (828 ) $ (492 ) $ 2,343 $ — Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2016 Fair Value as of Total Realized and Settlements Fair Value as of (2) Change in (In millions) Recorded in Revenue Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 5 $ 5 $ (10 ) $ — $ — Total derivative instruments 5 5 (10 ) — — Total liabilities carried at fair value $ 5 $ 5 $ (10 ) $ — $ — (1) There were no transfers of assets into level 3 during the nine months ended September 30, 2016 . (2) There were no transfers of liabilities into or out of level 3 during the nine months ended September 30, 2016 . Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Fair Value as of June 30, Total Realized and Purchases Sales Settlements Transfers out of Level 3 Fair Value as of (1) Change in (In millions) Recorded Recorded Assets: AFS Investment securities: Asset-backed securities: Student loans $ 234 $ — $ (3 ) $ — $ — $ (1 ) $ — $ 230 Other 2,933 22 (19 ) — (686 ) (307 ) — 1,943 Total asset-backed securities 3,167 22 (22 ) — (686 ) (308 ) — 2,173 Non-U.S. debt securities: Mortgage-backed securities 97 — — — — — (97 ) — Asset-backed securities 193 — (1 ) 168 — (83 ) — 277 Other 264 — (1 ) — — — — 263 Total Non-U.S. debt securities 554 — (2 ) 168 — (83 ) (97 ) 540 State and political subdivisions 36 — (1 ) — — — — 35 Collateralized mortgage obligations 215 — (1 ) — (17 ) (49 ) 148 Other U.S. debt securities 9 — — — — — — 9 Total investment securities available-for-sale 3,981 22 (26 ) 168 (686 ) (408 ) (146 ) 2,905 Other assets: Derivative instruments: Foreign exchange contracts 60 (5 ) — 1 — (35 ) — 21 $ — Total derivative instruments 60 (5 ) — 1 — (35 ) — 21 — Total assets carried at fair value $ 4,041 $ 17 $ (26 ) $ 169 $ (686 ) $ (443 ) $ (146 ) $ 2,926 $ — Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Fair Value as of June 30, Total Realized and Issuances Settlements Fair Value as of (2) Change in (In millions) Recorded Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 50 $ (3 ) $ 1 $ (26 ) $ 22 $ 1 Total derivative instruments 50 (3 ) 1 (26 ) 22 1 Total liabilities carried at fair value $ 50 $ (3 ) $ 1 $ (26 ) $ 22 $ 1 (1) There were no transfers of assets into level 3 during the three months ended September 30, 2015 . (2) There were no transfers of liabilities into or out of level 3 during the three months ended September 30, 2015 . Fair-Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2015 Fair Value as of December 31, Total Realized and Purchases Sales Settlements Transfers Transfers Fair Value as of Change in (In millions) Recorded Recorded Assets: Investment securities available-for-sale: Asset-backed securities: Student loans $ 259 $ — $ (2 ) $ — $ — $ (6 ) $ — $ (21 ) $ 230 Other 3,780 47 (37 ) — (1,106 ) (741 ) — — 1,943 Total asset-backed securities 4,039 47 (39 ) — (1,106 ) (747 ) — (21 ) 2,173 Non-U.S. debt securities: Mortgage-backed securities — — — 43 — — 97 (140 ) — Asset-backed securities 295 1 (1 ) 168 — (169 ) — (17 ) 277 Other 371 — — 111 — (32 ) — (187 ) 263 Total non-U.S. debt securities 666 1 (1 ) 322 — (201 ) 97 (344 ) 540 State and political subdivisions 38 — (2 ) — — (1 ) — — 35 Collateralized mortgage obligations 614 — (2 ) 293 (88 ) (82 ) — (587 ) 148 Other U.S. debt securities 9 — — — — — — — 9 Total investment securities available-for-sale 5,366 48 (44 ) 615 (1,194 ) (1,031 ) 97 (952 ) 2,905 Other assets: Derivative instruments: Derivative instruments, foreign exchange contracts 81 49 — 17 — (126 ) — — 21 $ — Total derivative instruments 81 49 — 17 — (126 ) — — 21 — Total assets carried at fair value $ 5,447 $ 97 $ (44 ) $ 632 $ (1,194 ) $ (1,157 ) $ 97 $ (952 ) $ 2,926 $ — Fair-Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2015 Fair Value as of December 31, Total Realized and Issuances Settlements Fair Value as of (1) Change in (In millions) Recorded Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 74 $ 24 $ 19 $ (95 ) $ 22 $ (2 ) Other 9 — — (9 ) — — Total derivative instruments 83 24 19 (104 ) 22 (2 ) Total liabilities carried at fair value $ 83 $ 24 $ 19 $ (104 ) $ 22 $ (2 ) (1) There were no transfers of liabilities into or out of level 3 during the nine months ended September 30, 2015 . The following table presents total realized and unrealized gains and losses for our level-3 financial assets and liabilities and where they are presented in our consolidated statement of income for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, Total Realized and Change in Total Realized and Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of September 30, (In millions) 2016 2015 2016 2015 2016 2015 2016 2015 Fee revenue: Trading services $ — $ (1 ) $ — $ (1 ) $ (2 ) $ 25 $ — $ 2 Total fee revenue — (1 ) — (1 ) (2 ) 25 — 2 Net interest revenue 13 21 — — 30 48 — — Total revenue $ 13 $ 20 $ — $ (1 ) $ 28 $ 73 $ — $ 2 The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level-3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level-3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker or dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level-3 Fair-Value Measurements Fair Value Weighted-Average (Dollars in millions, except where otherwise noted) As of September 30, 2016 As of December 31, 2015 Valuation Technique Significant (1) As of September 30, 2016 As of December 31, 2015 Significant unobservable inputs readily available to State Street: Assets: Asset-backed securities, other $ 14 $ 28 Discounted cash flows Credit spread 0.7 % (0.1 )% State and political subdivisions 40 33 Discounted cash flows Credit spread 2.0 2.2 Derivative instruments, foreign exchange contracts — 5 Option model Volatility — 9.3 Total $ 54 $ 66 Liabilities: Derivative instruments, foreign exchange contracts $ — $ 5 Option model Volatility — 9.2 Total $ — $ 5 (1) Significant chan ges in these unobservable inputs would result in significant changes in fair value measure. The following tables present information with respect to the composition of our level-3 financial assets and liabilities, by availability of significant unobservable inputs, as of the dates indicated: September 30, 2016 Significant Unobservable Inputs Readily Available to State Street (1) Significant Unobservable Inputs Not Developed by State Street and Not Readily Available (2) Total Assets and Liabilities with Significant Unobservable Inputs (In millions) Assets: U.S. Treasury and federal agencies, mortgage-backed securities $ — $ 50 $ 50 Asset-backed securities, student loans — 192 192 Asset-backed securities, other 14 1,259 1,273 Non-U.S. debt securities, mortgage-backed securities — 90 90 Non-U.S. debt securities, asset-backed securities — 138 138 Non-U.S. debt securities, other — 458 458 State and political subdivisions 40 — 40 Collateralized mortgage obligations — 102 102 Total $ 54 $ 2,289 $ 2,343 (1) Information with respect to these model-priced financial assets are provided in a separate table. (2) Fair value for these financial assets is measured using non-binding broker or dealer quotes. December 31, 2015 Significant Unobservable Inputs Readily Available to State Street (1) Significant Unobservable Inputs Not Developed by State Street and Not Readily Available (2) Total Assets and Liabilities with Significant Unobservable Inputs (In millions) Assets: Asset-backed securities, student loans $ — $ 189 $ 189 Asset-backed securities, other 28 1,736 1,764 Non-U.S. debt securities, asset-backed securities — 174 174 Non-U.S. debt securities, other — 255 255 State and political subdivisions 33 — 33 Collateralized mortgage obligations — 39 39 Other U.S. debt securities — 10 10 Derivative instruments, foreign exchange contracts 5 — 5 Total $ 66 $ 2,403 $ 2,469 Liabilities: Derivative instruments, foreign exchange contracts $ 5 $ — $ 5 Total $ 5 $ — $ 5 (1) Information with respect to these model-priced fina ncial assets and liabilities is provided in a separate table. (2) Fair value for these financial assets is measured using non-binding broker or dealer quotes. We use internally-developed pricing models that incorporate discounted cash flow and option model techniques to measure the fair value of certain level-3 financial assets and liabilities. Use of these techniques requires the determination of relevant inputs and assumptions, some of which represent significant unobservable inputs as indicated in the preceding tables. Accordingly, changes in these unobservable inputs may have a significant impact on fair value. Fair Value Estimates: Estimates of fair value for financial instruments not carried at fair value on a recurring basis in our consolidated statement of condition are generally subjective in nature, and are determined as of a specific point in time based on the characteristics of the financial instruments and relevant market information. The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value on a recurring basis, as they would be categorized within the fair-value hierarchy, as of the dates indicated. Fair-Value Hierarchy September 30, 2016 Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) (In millions) Financial Assets: Cash and due from banks $ 3,490 $ 3,490 $ 3,490 $ — $ — Interest-bearing deposits with banks 79,090 79,090 — 79,090 — Securities purchased under resale agreements 2,442 2,442 — 2,442 — Investment securities held-to-maturity 28,368 28,780 17,795 10,910 75 Net loans (excluding leases) (1) 20,605 20,610 — 20,509 101 Financial Liabilities: Deposits: Noninterest-bearing $ 60,545 $ 60,545 $ — $ 60,545 $ — Interest-bearing - U.S. 33,767 33,767 — 33,767 — Interest-bearing - non-U.S. 104,454 104,454 — 104,454 — Securities sold under repurchase agreements 4,364 4,364 — 4,364 — Federal funds purchased 28 28 — 28 — Other short-term borrowings 1,385 1,385 — 1,385 — Long-term debt 11,834 12,015 — 11,657 358 (1) Includes $14 million of loans classified as held-for-sale that were measured at fair value on a non-recurring basis as of September 30, 2016 . Fair-Value Hierarchy December 31, 2015 Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) (In millions) Financial Assets: Cash and due from banks $ 1,207 $ 1,207 $ 1,207 $ — $ — Interest-bearing deposits with banks 75,338 75,338 — 75,338 — Securities purchased under resale agreements 3,404 3,404 — 3,404 — Investment securities held-to-maturity 29,952 29,798 — 29,798 — Net loans (excluding leases) (1) 17,838 17,792 — 17,667 125 Financial Liabilities: Deposits: Noninterest-bearing $ 65,800 $ 65,800 $ — $ 65,800 $ — Interest-bearing - U.S. 29,958 29,958 — 29,958 — Interest-bearing - non-U.S. 95,869 95,869 — 95,869 — Securities sold under repurchase agreements 4,499 4,499 — 4,499 — Federal funds purchased 6 6 — 6 — Other short-term borrowings 1,748 1,748 — 1,748 — Long-term debt 11,497 11,604 — 11,215 389 (1) Includes $14 million of loans classified as held-for-sale that were measured at fair value on a non-recurring basis as of December 31, 2015 .

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Investment securities held by us are classified as either trading, AFS , or HTM at the time of purchase and reassessed periodically, based on management’s intent. Generally, trading assets are debt and equity securities purchased in connection with our trading activities and, as such, are expected to be sold in the near term. Our trading activities typically involve active and frequent buying and selling with the objective of generating profits on short-term movements. AFS investment securities are those securities that we intend to hold for an indefinite period of time. AFS investment securities include securities utilized as part of our asset-and-liability management activities that may be sold in response to changes in interest rates, prepayment risk, liquidity needs or other factors. HTM securities are debt securities that management has the intent and the ability to hold to maturity. Trading assets are carried at fair value. Both realized and unrealized gains and losses on trading assets are recorded in trading services revenue in our consolidated statement of income. Debt and marketable equity securities classified as AFS are carried at fair value, and after-tax net unrealized gains and losses are recorded in AOCI. Gains or losses realized on sales of AFS investment securities are computed using the specific identification method and are recorded in gains (losses) related to investment securities, net, in our consolidated statement of income. HTM investment securities are carried at cost, adjusted for amortization of premiums and accretion of discounts. The following table presents the amortized cost and fair value, and associated unrealized gains and losses, of investment securities as of the dates indicated: September 30, 2016 December 31, 2015 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 5,283 $ 20 $ 1 $ 5,302 $ 5,717 $ 6 $ 5 $ 5,718 Mortgage-backed securities 17,796 224 25 17,995 18,168 131 134 18,165 Asset-backed securities: Student loans (1) 7,451 19 163 7,307 7,358 16 198 7,176 Credit cards 1,388 12 25 1,375 1,378 — 37 1,341 Sub-prime 376 2 24 354 448 2 31 419 Other (2) 1,257 16 — 1,273 1,724 43 3 1,764 Total asset-backed securities 10,472 49 212 10,309 10,908 61 269 10,700 Non-U.S. debt securities: Mortgage-backed securities 7,122 48 9 7,161 7,010 72 11 7,071 Asset-backed securities 2,528 4 3 2,529 3,272 2 7 3,267 Government securities 5,967 17 — 5,984 4,348 7 — 4,355 Other (3) 5,876 44 1 5,919 4,817 29 12 4,834 Total non-U.S. debt securities 21,493 113 13 21,593 19,447 110 30 19,527 State and political subdivisions 10,274 505 23 10,756 9,402 371 27 9,746 Collateralized mortgage obligations 2,752 62 8 2,806 2,993 16 22 2,987 Other U.S. debt securities 2,306 39 7 2,338 2,611 31 18 2,624 U.S. equity securities 39 4 2 41 33 9 3 39 Non-U.S. equity securities 3 — — 3 3 — — 3 U.S. money-market mutual funds 361 — — 361 542 — — 542 Non-U.S. money-market mutual funds 16 — — 16 19 — — 19 Total $ 70,795 $ 1,016 $ 291 $ 71,520 $ 69,843 $ 735 $ 508 $ 70,070 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 17,553 $ 333 $ 1 $ 17,885 $ 20,878 $ 2 $ 217 $ 20,663 Mortgage-backed securities 4,280 20 3 4,297 610 2 8 604 Asset-backed securities: Student loans (1) 1,440 — 40 1,400 1,592 — 47 1,545 Credit cards 897 3 — 900 897 — 1 896 Other 76 — — 76 366 2 1 367 Total asset-backed securities 2,413 3 40 2,376 2,855 2 49 2,808 Non-U.S. debt securities: Mortgage-backed securities 1,581 84 17 1,648 2,202 109 26 2,285 Asset-backed securities 697 — 1 696 1,415 4 3 1,416 Government securities 288 3 — 291 239 — 1 238 Other 119 2 — 121 65 — — 65 Total non-U.S. debt securities 2,685 89 18 2,756 3,921 113 30 4,004 State and political subdivisions — — — — 1 — — 1 Collateralized mortgage obligations 1,437 42 13 1,466 1,687 60 29 1,718 Total $ 28,368 $ 487 $ 75 $ 28,780 $ 29,952 $ 179 $ 333 $ 29,798 (1) Primarily composed of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (2) As of September 30, 2016 and December 31, 2015 , the fair value of other ABS was primarily composed of $1.27 billion and $1.76 billion , respectively, of collateralized loan obligations. (3) As of September 30, 2016 and December 31, 2015 , the fair value of other non-U.S. debt securities was primarily composed of $3.98 billion and $3.18 billion , respectively, of covered bonds and $981 million and $613 million , as of September 30, 2016 and December 31, 2015 , respectively, of corporate bonds. Aggregate investment securities with carrying values of $35.69 billion and $34.18 billion as of September 30, 2016 and December 31, 2015 , respectively, were designated as pledged for public and trust deposits, short-term borrowings and for other purposes as provided by law. The following tables present the aggregate fair values of investment securities that have been in a continuous unrealized loss position for less than 12 months , and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: Less than 12 months 12 months or longer Total September 30, 2016 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 35 $ — $ 177 $ 1 $ 212 $ 1 Mortgage-backed securities 3,116 12 858 13 3,974 25 Asset-backed securities: Student loans 520 3 4,990 160 5,510 163 Credit cards — — 505 25 505 25 Sub-prime 3 — 330 24 333 24 Other 150 — 150 — 300 — Total asset-backed securities 673 3 5,975 209 6,648 212 Non-U.S. debt securities: Mortgage-backed securities 368 1 1,137 8 1,505 9 Asset-backed securities 333 1 463 2 796 3 Government securities 2,044 — — — 2,044 — Other 569 1 363 — 932 1 Total non-U.S. debt securities 3,314 3 1,963 10 5,277 13 State and political subdivisions 714 9 508 14 1,222 23 Collateralized mortgage obligations 397 3 219 5 616 8 Other U.S. debt securities 133 — 157 7 290 7 U.S. equity securities — — 5 2 5 2 Non-U.S. equity securities — — 1 — 1 — Total $ 8,382 $ 30 $ 9,863 $ 261 $ 18,245 $ 291 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ — $ — $ 90 $ 1 $ 90 $ 1 Mortgage-backed securities 936 3 — — 936 3 Asset-backed securities: Student loans 452 12 922 28 1,374 40 Other — — 15 — 15 — Total asset-backed securities 452 12 937 28 1,389 40 Non-U.S. mortgage-backed securities: Mortgage-backed securities 104 3 406 14 510 17 Asset-backed securities 8 — 271 1 279 1 Government securities 174 — — — 174 — Total non-U.S. debt securities 286 3 677 15 963 18 Collateralized mortgage obligations 521 4 196 9 717 13 Total $ 2,195 $ 22 $ 1,900 $ 53 $ 4,095 $ 75 Less than 12 months 12 months or longer Total December 31, 2015 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,123 $ 4 $ 121 $ 1 $ 3,244 $ 5 Mortgage-backed securities 5,729 48 3,166 86 8,895 134 Asset-backed securities: Student loans 2,841 54 3,217 144 6,058 198 Credit cards 838 7 490 30 1,328 37 Sub-prime 7 — 387 31 394 31 Other 720 3 43 — 763 3 Total asset-backed securities 4,406 64 4,137 205 8,543 269 Non-U.S. debt securities: Mortgage-backed securities 1,457 7 437 4 1,894 11 Asset-backed securities 2,190 7 22 — 2,212 7 Government securities 1,691 — — — 1,691 — Other 1,548 5 527 7 2,075 12 Total non-U.S. debt securities 6,886 19 986 11 7,872 30 State and political subdivisions 206 1 658 26 864 27 Collateralized mortgage obligations 1,511 14 217 8 1,728 22 Other U.S. debt securities 475 9 178 9 653 18 U.S. equity securities — — 5 3 5 3 Total $ 22,336 $ 159 $ 9,468 $ 349 $ 31,804 $ 508 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 16,370 $ 120 $ 3,005 $ 97 $ 19,375 $ 217 Mortgage-backed securities 560 8 — — 560 8 Asset-backed securities: Student loans 896 25 615 22 1,511 47 Credit cards 636 1 — — 636 1 Other 102 — 31 1 133 1 Total asset-backed securities 1,634 26 646 23 2,280 49 Non-U.S. debt securities: Mortgage-backed securities 338 2 524 24 862 26 Asset-backed securities 1,015 3 69 — 1,084 3 Government securities 128 1 — — 128 1 Other — — 43 — 43 — Total non-U.S. debt securities 1,481 6 636 24 2,117 30 Collateralized mortgage obligations 634 9 537 20 1,171 29 Total $ 20,679 $ 169 $ 4,824 $ 164 $ 25,503 $ 333 The following table presents contractual maturities of debt investment securities by carrying amount as of September 30, 2016 . The maturities of certain asset-backed securities, mortgage-backed securities, and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. September 30, 2016 Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,504 $ 1,250 $ 146 $ 402 $ 5,302 Mortgage-backed securities 61 1,940 4,343 11,651 17,995 Asset-backed securities: Student loans 894 3,376 1,132 1,905 7,307 Credit cards 4 1,068 303 — 1,375 Sub-prime 3 2 2 347 354 Other 3 84 1,036 150 1,273 Total asset-backed securities 904 4,530 2,473 2,402 10,309 Non-U.S. debt securities: Mortgage-backed securities 1,239 3,734 850 1,338 7,161 Asset-backed securities 80 2,214 229 6 2,529 Government securities 4,453 1,319 212 — 5,984 Other 1,818 3,710 391 — 5,919 Total non-U.S. debt securities 7,590 10,977 1,682 1,344 21,593 State and political subdivisions 460 2,387 5,730 2,179 10,756 Collateralized mortgage obligations 16 55 842 1,893 2,806 Other U.S. debt securities 601 1,074 616 47 2,338 Total $ 13,136 $ 22,213 $ 15,832 $ 19,918 $ 71,099 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ — $ 14,732 $ 2,745 $ 76 $ 17,553 Mortgage-backed securities 1 8 167 4,104 4,280 Asset-backed securities: Student loans 89 175 230 946 1,440 Credit cards 98 799 — — 897 Other 13 26 34 3 76 Total asset-backed securities 200 1,000 264 949 2,413 Non-U.S. debt securities: Mortgage-backed securities 368 387 74 752 1,581 Asset-backed securities 145 546 6 — 697 Government securities 175 113 — — 288 Other 74 45 — — 119 Total non-U.S. debt securities 762 1,091 80 752 2,685 Collateralized mortgage obligations 103 25 299 1,010 1,437 Total $ 1,066 $ 16,856 $ 3,555 $ 6,891 $ 28,368 The following table presents a roll-forward with respect to net impairment losses that have been recognized in income for the periods indicated. Nine Months Ended September 30, (In millions) 2016 2015 Balance, beginning of period $ 92 $ 115 Additions: Losses for which OTTI was previously recognized 2 1 Deductions: Previously recognized losses related to securities sold or matured (26 ) (22 ) Balance, end of period $ 68 $ 94 Interest revenue related to debt securities is recognized in our consolidated statement of income using the effective interest method, or on a basis approximating a level rate of return over the contractual or estimated life of the security. The level rate of return considers any nonrefundable fees or costs, as well as purchase premiums or discounts, resulting in amortization or accretion, accordingly. For debt securities acquired for which we consider it probable as of the date of acquisition that we will be unable to collect all contractually required principal, interest and other payments, the excess of our estimate of undiscounted future cash flows from these securities over their initial recorded investment is accreted into interest revenue on a level-yield basis over the securities’ estimated remaining terms. Subsequent decreases in these securities’ expected future cash flows are either recognized prospectively through an adjustment of the yields on the securities over their remaining terms, or are evaluated for other-than-temporary impairment. Increases in expected future cash flows are recognized prospectively over the securities’ estimated remaining terms through the recalculation of their yields. For certain debt securities acquired which are considered to be beneficial interests in securitized financial assets, the excess of our estimate of undiscounted future cash flows from these securities over their initial recorded investment is accreted into interest revenue on a level-yield basis over the securities’ estimated remaining terms. Subsequent decreases in these securities’ expected future cash flows are either recognized prospectively through an adjustment of the yields on the securities over their remaining terms, or are evaluated for other-than-temporary impairment. Increases in expected future cash flows are recognized prospectively over the securities’ estimated remaining terms through the recalculation of their yields. Impairment: We conduct periodic reviews of individual securities to assess whether OTTI exists. For more information about the review of securities for impairment, refer to Note 3 in the consolidated financial statements on pages 149 to 152 in our 2015 Form 10-K. In the nine months ended September 30, 2016 and 2015 , we recorded $2 million and $1 million , respectively, of OTTI, which resulted from adverse changes in the timing of expected future cash flows from the securities. After a review of the investment portfolio, taking into consideration current economic conditions, adverse situations that might affect our ability to fully collect principal and interest, the timing of future payments, the credit quality and performance of the collateral underlying mortgage- and asset-backed securities and other relevant factors, and excluding the OTTI recorded in the nine months ended September 30, 2016 , management considers the aggregate decline in fair value of the investment securities portfolio and the resulting gross pre-tax unrealized losses of $366 million related to 962 securities as of September 30, 2016 to be temporary, and not the result of any material changes in the credit characteristics of the securities.

Loans and Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Loans and Leases	Loans and Leases We segregate our loans and leases into two segments: institutional and CRE. Within the institutional and CRE segments, we further segregate the receivables into classes based on their risk characteristics, their initial measurement attributes and the methods we use to monitor and assess credit risk. For additional information on our loans and leases, including our internal risk-rating system used to assess our risk of credit loss for each loan or lease, refer to Note 4 to the consolidated financial statements on pages 152 to 156 in our 2015 Form 10-K. The following table presents our recorded investment in loans and leases, by segment and class, as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Institutional: Investment funds: U.S. $ 13,647 $ 11,136 Non-U.S. 3,092 1,678 Commercial and financial: U.S. 3,540 4,671 Non-U.S. 275 278 Purchased receivables: U.S. 74 93 Non-U.S. — — Lease financing: U.S. 337 337 Non-U.S. 510 578 Total institutional 21,475 18,771 Commercial real estate: U.S. 27 28 Total loans and leases 21,502 18,799 Allowance for loan and lease losses (51 ) (46 ) Loans and leases, net of allowance for loan and lease losses $ 21,451 $ 18,753 Short-duration advances to our clients included in the institutional segment were $5.70 billion and $2.62 billion as of September 30, 2016 and December 31, 2015 , respectively. These short-duration advances provide liquidity to fund clients in support of their transaction flows associated with securities settlement activities. The commercial-and-financial class in the institutional segment presented in the preceding table included approximately $3.38 billion and $3.14 billion of senior secured loans as of September 30, 2016 and December 31, 2015 , respectively. These senior secured loans are included in the “speculative”, "special mention" and "substandard" categories in the credit-quality-indicator tables presented below. As of September 30, 2016 and December 31, 2015 , our allowance for loan and lease losses included approximately $43 million and $35 million , respectively, related to these loans. Certain loans are pledged as collateral for access to the Federal Reserve's discount window. As of September 30, 2016 and December 31, 2015 , these loans and leases pledged as collateral totaled $1.7 billion and $2.5 billion, respectively. The following tables present our recorded investment in each class of loans and leases by credit quality indicator as of the dates indicated: Institutional September 30, 2016 Investment Funds Commercial and Financial Purchased Receivables Lease Financing Commercial Real Estate Total Loans and Leases (In millions) Investment grade (1) $ 15,828 $ 422 $ 74 $ 847 $ 27 $ 17,198 Speculative (2) 908 3,378 — — — 4,286 Special mention (3) 3 — — — — 3 Substandard (4) — 15 — — — 15 Total $ 16,739 $ 3,815 $ 74 $ 847 $ 27 $ 21,502 Institutional December 31, 2015 Investment Funds Commercial and Financial Purchased Receivables Lease Financing Commercial Real Estate Total Loans and Leases (In millions) Investment grade (1) $ 12,415 $ 1,780 $ 93 $ 888 $ 28 $ 15,204 Speculative (2) 399 3,138 — 27 — 3,564 Special mention (3) — 31 — — — 31 Total $ 12,814 $ 4,949 $ 93 $ 915 $ 28 $ 18,799 (1) Investment-grade loans and leases consist of counterparties with strong credit quality and low expected credit risk and probability of default. Ratings apply to counterparties with a strong capacity to support the timely repayment of any financial commitment. (2) Speculative loans and leases consist of counterparties that face ongoing uncertainties or exposure to business, financial, or economic downturns. However, these counterparties may have financial flexibility or access to financial alternatives, which allow for financial commitments to be met. (3) Special mention loans and leases consist of counterparties with potential weaknesses that, if uncorrected, may result in deterioration of repayment prospects. (4) Substandard loans and leases consist of counterparties with well-defined weakness that jeopardizes repayment with the possibility we will sustain some loss. The following table presents our recorded investment in loans and leases, disaggregated based on our impairment methodology, as of the dates indicated: September 30, 2016 December 31, 2015 (In millions) Institutional Commercial Real Estate Total Loans and Leases Institutional Commercial Real Estate Total Loans and Leases Loans and leases (1) : Collectively evaluated for impairment $ 21,475 $ 27 $ 21,502 $ 18,771 $ 28 $ 18,799 Total $ 21,475 $ 27 $ 21,502 $ 18,771 $ 28 $ 18,799 (1) For those portfolios where there are a small number of loans each with a large balance, we review each loan annually for indicators of impairment. For those loans where no such indicators are identified, the loans are collectively evaluated for impairment. As of September 30, 2016 and December 31, 2015 , zero of the allowance for loan and lease loss related to institutional loans individually evaluated for impairment. As of September 30, 2016 and December 31, 2015 , all of the allowance for loan and lease loss related to institutional loans collectively evaluated for impairment. The following table presents information related to our recorded investment in impaired loans and leases for the dates or periods indicated: As of September 30, 2016 As of December 31, 2015 (In millions) Recorded Investment Unpaid Principal Balance (1) Recorded Investment Unpaid Principal Balance With no related allowance recorded: CRE—property development—acquired credit-impaired $ — $ 34 $ — $ 34 CRE—other—acquired credit-impaired — 22 — 22 Total CRE $ — $ 56 $ — $ 56 (1) As of September 30, 2016 and December 31, 2015 , all of the allowance for loan and lease losses of $51 million and $46 million , respectively, related to loans that were not impaired. In certain circumstances, we restructure troubled loans by granting concessions to borrowers experiencing financial difficulty. Once restructured, the loans are generally considered impaired until their maturity, regardless of whether the borrowers perform under the modified terms of the loans. No loans were modified in troubled debt restructurings during the nine months ended September 30, 2016 and the year ended December 31, 2015 . As of September 30, 2016 and December 31, 2015 , no institutional loans or leases and no CRE loans were on non-accrual status or 90 days or more contractually past due. The following table presents activity in the allowance for loan and lease losses for the periods indicated: Three Months Ended September 30, 2016 2015 (In millions) Total Loans and Leases Total Loans and Leases Allowance for loan and lease losses (1) : Beginning balance $ 51 $ 43 Provision for loan losses — 5 Charge-offs — — Ending balance $ 51 $ 48 Nine Months Ended September 30, 2016 2015 (In millions) Total Loans and Leases Total Loans and Leases Allowance for loan and lease losses (1) : Beginning balance $ 46 $ 37 Provision for loan losses 8 11 Charge-offs (3 ) — Ending balance $ 51 $ 48 (1) As of September 30, 2016 , approximately $43 million of our allowance for loan and lease losses was related to senior secured loans included in the institutional segment; the remaining $8 million was related to other institutional segment loans. The provision of $8 million and $11 million recorded in the nine months ended September 30, 2016 and 2015 , respectively, as well as the charge-offs of $3 million recorded in the nine months ended September 30, 2016 were a result of exposure to senior secured loans to non-investment grade borrowers, purchased in connection with our participation in syndicated loans. Loans and leases are reviewed on a regular basis, and any provisions for loan losses that are recorded reflect management's estimate of the amount necessary to maintain the allowance for loan and lease losses at a level considered appropriate to absorb estimated incurred losses in the loan-and-lease portfolio.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table presents changes in the carrying amount of goodwill during the periods indicated: September 30, 2016 December 31, 2015 (In millions) Investment Servicing Investment Management Total Investment Servicing Investment Management Total Goodwill: Beginning balance $ 5,641 $ 30 $ 5,671 $ 5,793 $ 33 $ 5,826 Acquisitions (1) — 236 236 — — — Divestitures and other reductions (11 ) — (11 ) — — — Foreign currency translation 15 — 15 (152 ) (3 ) (155 ) Ending balance $ 5,645 $ 266 $ 5,911 $ 5,641 $ 30 $ 5,671 (1) Amounts for 2016 reflect our acquisition of GEAM, which is more fully described in Note 1. The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: September 30, 2016 December 31, 2015 (In millions) Investment Servicing Investment Management Total Investment Servicing Investment Management Total Other intangible assets: Beginning balance $ 1,753 $ 15 $ 1,768 $ 1,998 $ 27 $ 2,025 Acquisitions (1) — 217 217 16 — 16 Amortization (141 ) (12 ) (153 ) (187 ) (10 ) (197 ) Foreign currency translation and other, net 17 — 17 (74 ) (2 ) (76 ) Ending balance $ 1,629 $ 220 $ 1,849 $ 1,753 $ 15 $ 1,768 (1) Amounts for 2016 reflect our acquisition of GEAM, which is more fully described in Note 1. The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: September 30, 2016 December 31, 2015 (In millions) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Client relationships $ 2,703 $ (1,312 ) $ 1,391 $ 2,486 $ (1,198 ) $ 1,288 Core deposits 673 (273 ) 400 667 (246 ) 421 Other 158 (100 ) 58 147 (88 ) 59 Total $ 3,534 $ (1,685 ) $ 1,849 $ 3,300 $ (1,532 ) $ 1,768

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2016
Other Assets [Abstract]
Other Assets	Other Assets The following table presents the components of other assets as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Collateral deposits, net $ 24,458 $ 21,465 Derivative instruments, net 3,503 4,777 Bank-owned life insurance 3,137 3,078 Investments in joint ventures and other unconsolidated entities 2,235 2,034 Receivable for securities settlement 598 311 Accounts receivable 454 1,018 Prepaid expenses 363 284 Income taxes receivable 219 154 Deferred tax assets, net of valuation allowance 215 182 Deposits with clearing organizations 138 127 Other (1) 1,000 473 Total $ 36,320 $ 33,903 (1) Includes amounts held in escrow accounts at third parties related to the negotiated settlements in the indirect foreign exchange legal matter (see Note 10).

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We use derivative financial instruments to support our clients' needs and to manage our interest-rate and currency risk. In undertaking these activities, we assume positions in both the foreign exchange and interest-rate markets by buying and selling cash instruments and using derivative financial instruments, including foreign exchange forward contracts, foreign exchange and interest-rate options and interest-rate swaps, interest-rate forward contracts and interest-rate futures. For information on our derivative instruments, including the related accounting policies, refer to Note 10 to the consolidated financial statements on pages 162 to 168 in our 2015 Form 10-K. Derivative financial instruments are also subject to credit and counterparty risk, which we manage by performing credit reviews, maintaining individual counterparty limits, entering into netting arrangements and requiring the receipt of collateral. Cash collateral received from and provided to counterparties in connection with derivative financial instruments is recorded in accrued expenses and other liabilities and other assets, respectively, in our consolidated statement of condition. As of September 30, 2016 and December 31, 2015 , we had recorded approximately $1.70 billion and $1.40 billion , respectively, of cash collateral received from counterparties and approximately $971 million and $1.65 billion , respectively, of cash collateral provided to counterparties in connection with derivative financial instruments in our consolidated statement of condition. Certain of our derivative assets and liabilities as of September 30, 2016 and December 31, 2015 are subject to master netting agreements with our derivative counterparties. Certain of these agreements contain credit risk-related contingent features in which the counterparty has the right to declare us in default and accelerate cash settlement of our net derivative liabilities with the counterparty in the event that our credit rating falls below specified levels. The aggregate fair value of all derivative instruments with credit risk-related contingent features that were in a net liability position as of September 30, 2016 totaled approximately $757 million , against which we provided $2 million of underlying collateral. If our credit rating were downgraded below levels specified in the agreements, the maximum additional amount of payments related to termination events that could have been required pursuant to these contingent features, assuming no change in fair value, as of September 30, 2016 was approximately $755 million . Such accelerated settlement would be at fair value and therefore not affect our consolidated results of operations. Derivatives Not Designated as Hedging Instruments: In connection with our trading activities, we use derivative financial instruments in our role as a financial intermediary and as both a manager and servicer of financial assets, in order to accommodate our clients' investment and risk management needs. In addition, we use derivative financial instruments for risk management purposes as economic hedges, which are not formally designated as accounting hedges, in order to contribute to our overall corporate earnings and liquidity. These activities are designed to generate trading services revenue and to manage volatility in our net interest revenue. The level of market risk that we assume is a function of our overall objectives and liquidity needs, our clients' requirements and market volatility. For additional information on derivatives not designated as hedging instruments, refer to Note 10 to the consolidated financial statements on pages 163 to 164 in our 2015 Form 10-K. Derivatives Designated as Hedging Instruments: In connection with our asset-and-liability management activities, we use derivative financial instruments to manage our interest-rate risk and foreign currency risk. Interest-rate risk, defined as the sensitivity of income or financial condition to variations in interest rates, is a significant non-trading market risk to which our assets and liabilities are exposed. We manage our interest-rate risk by identifying, quantifying and hedging our exposures, using fixed-rate portfolio securities and a variety of derivative financial instruments, most frequently interest-rate swaps and options (for example, interest-rate caps and floors). Interest-rate swap agreements alter the interest-rate characteristics of specific balance sheet assets or liabilities. When appropriate, forward-rate agreements, options on swaps, and exchange-traded futures and options are also used. We use foreign exchange forward and swap contracts to hedge foreign exchange exposure to various foreign currencies with respect to certain assets and liabilities. Our hedging relationships are formally designated, and qualify for hedge accounting, as fair value, cash flow or net investment hedges. For additional information on derivatives designated as hedging instruments, refer to Note 10 to the consolidated financial statements on pages 164 to 168 in our 2015 Form 10-K. Fair Value Hedges We have entered into interest-rate swap agreements to modify our interest revenue from certain available-for-sale investment securities from a fixed rate to a floating rate. The hedged AFS investment securities included hedged trusts that had a weighted-average life of approximately 4.8 years as of September 30, 2016 , compared to 5.4 years as of December 31, 2015 . We have entered into interest-rate swap agreements to modify our interest expense on eight senior notes and two subordinated notes from fixed rates to floating rates. The senior and subordinated notes are hedged with interest-rate swap contracts with notional amounts, maturities and fixed-rate coupon terms that align with the hedged notes. The table below summarizes the maturities and the paid fixed interest rates for the hedged senior and subordinated notes: September 30, 2016 Maturity Paid Fixed Interest Rate Senior Notes 2018 1.35% 2020 2.55 2021 1.95 2021 4.38 2023 3.70 2024 3.30 2025 3.55 2026 2.65 Subordinated Notes 2018 4.96 2023 3.10 We have entered into foreign exchange swap contracts to hedge the change in fair value attributable to foreign exchange movements in our foreign currency denominated investment securities and deposits. These forward contracts convert the foreign currency risk to U.S. dollars, thereby mitigating our exposure to fluctuations in the fair value of the securities and deposits attributable to changes in foreign exchange rates. Cash Flow Hedges We have entered into foreign exchange contracts to hedge the change in cash flows attributable to foreign exchange movements in foreign currency denominated investment securities. These foreign exchange contracts convert the foreign currency risk to U.S. dollars, thereby mitigating our exposure to fluctuations in the cash flows of the securities attributable to changes in foreign exchange rates. Net Investment Hedges We have entered into foreign exchange contracts to protect the net investment in our foreign operations against adverse changes in exchange rates. These forward contracts convert the foreign currency risk to U.S. dollars, thereby mitigating our exposure to fluctuations in the fair value of our net investments in our foreign operations attributable to changes in foreign exchange rates. Effectiveness of net investment hedges is based on the overall changes in the fair value of the forward contracts. The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments entered into in connection with our trading and asset-and-liability management activities as of the dates indicated: (In millions) September 30, December 31, Derivatives not designated as hedging instruments: Interest-rate contracts: Swap agreements and forwards $ — $ 336 Futures 6,492 2,621 Foreign exchange contracts: Forward, swap and spot 1,313,515 1,274,277 Options purchased 131 403 Options written 24 404 Futures 37 — Credit derivative contracts: Credit swap agreements (1) — 141 Commodity and equity contracts: Commodity (1) 142 113 Equity (1) 76 87 Other: Stable value contracts 27,319 24,583 Deferred value awards (2) 456 320 Derivatives designated as hedging instruments: Interest-rate contracts: Swap agreements 10,276 9,398 Foreign exchange contracts: Forward and swap 4,812 4,515 (1) Primarily composed of positions held by a consolidated sponsored investment fund, more fully described in Note 11 . (2) Represents grants of deferred value awards to employees; refer to Note 12 in the 2015 Form 10-K , "Derivatives Not Designated as Hedging Instruments" for additional information. In connection with our asset-and-liability management activities, we have entered into interest-rate contracts designated as fair value hedges to manage our interest-rate risk. The following tables present the aggregate notional amounts of these interest-rate contracts and the related assets or liabilities being hedged as of the dates indicated: September 30, 2016 (1) (In millions) Fair Value Hedges Investment securities available-for-sale $ 1,551 Long-term debt (2) 8,725 Total $ 10,276 December 31, 2015 (1) (In millions) Fair Value Hedges Investment securities available-for-sale $ 1,698 Long-term debt (2) 7,700 Total $ 9,398 (1) As of September 30, 2016 and December 31, 2015 , there were no interest-rate contracts designated as cash flow hedges. (2) As of September 30, 2016 , these fair value hedges increased the carrying value of long-term debt presented in our consolidated statement of condition by $376 million . As of December 31, 2015 , these fair value hedges increased the carrying value of long-term debt presented in our consolidated statement of condition by $105 million . The following table presents the contractual and weighted-average interest rates for long-term debt, which include the effects of the fair value hedges presented in the table above, for the periods indicated: Three Months Ended September 30, 2016 2015 Contractual Rates Rate Including Impact of Hedges Contractual Rates Rate Including Impact of Hedges Long-term debt 3.37 % 2.27 % 3.59 % 2.35 % Nine Months Ended September 30, 2016 2015 Contractual Rate Contractual Rate Long-term debt 3.41 % 2.24 % 3.60 % 2.51 % The following tables present the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is disclosed in Note 8 . Derivative Assets (1) Fair Value (In millions) September 30, 2016 December 31, 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 7,838 $ 10,799 Interest-rate contracts — 2 Other derivative contracts 3 5 Total $ 7,841 $ 10,806 Derivatives designated as hedging instruments: Foreign exchange contracts $ 299 $ 517 Interest-rate contracts 239 133 Total $ 538 $ 650 (1) Derivative assets are included within other assets in our consolidated statement of condition. Derivative Liabilities (1) Fair Value (In millions) September 30, 2016 December 31, 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 7,753 $ 10,795 Other derivative contracts 150 103 Interest-rate contracts — 2 Total $ 7,903 $ 10,900 Derivatives designated as hedging instruments: Foreign exchange contracts $ 148 $ 73 Interest-rate contracts 189 180 Total $ 337 $ 253 (1) Derivative liabilities are included within other liabilities in our consolidated statement of condition. The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts Trading services revenue $ 161 $ 177 $ 477 $ 546 Interest-rate contracts Processing fees and other revenue — — 1 — Interest-rate contracts Trading services revenue (1 ) — (6 ) (1 ) Credit derivative contracts Trading services revenue — — (1 ) Other derivative contracts Trading services revenue 1 (1 ) (2 ) 1 Total $ 161 $ 176 $ 469 $ 546 Location of (Gain) Loss on Derivative in Consolidated Statement of Income Amount of (Gain) Loss on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Other derivative contracts Compensation and employee benefits $ 41 $ 28 $ 168 $ 121 Total $ 41 $ 28 $ 168 $ 121 Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income Three Months Ended September 30, Three Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives designated as fair value hedges: Foreign exchange contracts Processing fees and $ 24 $ (80 ) Investment securities Processing fees and $ (24 ) $ 80 Foreign exchange contracts Processing fees and other revenue 1 (13 ) FX deposit Processing fees and other revenue (1 ) 13 Interest-rate contracts Processing fees and other revenue 22 (25 ) Available-for-sale securities Processing fees and other revenue (1) (22 ) 26 Interest-rate contracts Processing fees and (79 ) 182 Long-term debt Processing fees and 78 (176 ) Total $ (32 ) $ 64 $ 31 $ (57 ) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income Nine Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives designated as fair value hedges: Foreign exchange contracts Processing fees and $ 43 $ (132 ) Investment securities Processing fees and $ (43 ) $ 132 Foreign exchange contracts Processing fees and other revenue 247 102 FX deposit Processing fees and other revenue (247 ) (102 ) Interest-rate contracts Processing fees and other revenue (15 ) (13 ) Available-for-sale securities Processing fees and other revenue (2) 15 14 Interest-rate contracts Processing fees and 297 165 Long-term debt Processing fees and (282 ) (159 ) Total $ 572 $ 122 $ (557 ) $ (115 ) (1) For the three months ended September 30, 2016 and 2015 , $13 million and $16 million , respectively, of unrealized gains and unrealized losses, respectively, on AFS investment securities designated in fair value hedges was recognized in OCI. (2) For the nine months ended September 30, 2016 and 2015 , $9 million and $9 million , respectively, of unrealized losses on AFS investment securities designated in fair value hedges was recognized in OCI. Differences between the gains (losses) on the derivative and the gains (losses) on the hedged item, excluding any amounts recorded in net interest revenue, represent hedge ineffectiveness. Amount of Gain (Loss) on Derivative Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Amount of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Location of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, (In millions) 2016 2015 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Interest-rate contracts $ — $ — Net interest revenue $ — $ (1 ) Net interest revenue $ — $ — Foreign exchange contracts (1 ) 40 Net interest revenue — — Net interest revenue 6 2 Total $ (1 ) $ 40 $ — $ (1 ) $ 6 $ 2 Derivatives designated as net investment hedges: Foreign exchange contracts $ 4 $ — Gains (Losses) related to investment securities, net $ — $ — Gains (Losses) related to investment securities, net $ — $ — Total $ 4 $ — $ — $ — $ — $ — Amount of Gain (Loss) on Derivative Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Amount of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Location of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Nine Months Ended September 30, Nine Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Interest-rate contracts $ — $ — Net interest revenue $ — $ (3 ) Net interest revenue $ — $ — Foreign exchange contracts (293 ) 81 Net interest revenue — — Net interest revenue 17 6 Total $ (293 ) $ 81 $ — $ (3 ) $ 17 $ 6 Derivatives designated as net investment hedges: Foreign exchange contracts $ 55 $ — Gains (Losses) related to investment securities, net $ — $ — Gains (Losses) related to investment securities, net $ — $ — Total $ 55 $ — $ — $ — $ — $ —

Offsetting Arrangements

Offsetting Arrangements	9 Months Ended
	Sep. 30, 2016
Offsetting [Abstract]
Offsetting Arrangements	Offsetting Arrangements We manage credit and counterparty risk by entering into enforceable netting agreements and other collateral arrangements with counterparties to derivative contracts and secured financing transactions, including resale and repurchase agreements, and principal securities borrowing and lending agreements. These netting agreements mitigate our counterparty credit risk by providing for a single net settlement with a counterparty of all financial transactions covered by the agreement in an event of default as defined under such agreement. In limited cases, a netting agreement may also provide for the periodic netting of settlement payments with respect to multiple different transaction types in the normal course of business. For additional information on offsetting arrangements, refer to Note 11 to the consolidated financial statements on pages 169 to 172 in our 2015 Form 10-K. As of September 30, 2016 and December 31, 2015 , the fair value of securities received as collateral where we are permitted to transfer or re-pledge the securities totaled $2.26 billion and $3.05 billion , respectively, and the fair value of the portion that had been transferred or re-pledged as of the same date was $287 million and $262 million , respectively. The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: September 30, 2016 December 31, 2015 (In millions) Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts of Recognized Assets (1) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Derivatives: Foreign exchange contracts $ 8,137 $ (3,936 ) $ 4,201 $ 11,316 $ (5,896 ) $ 5,420 Interest-rate contracts 239 (8 ) 231 135 (5 ) 130 Other derivative contracts 3 (3 ) — 5 (2 ) 3 Cash collateral netting NA (929 ) (929 ) N/A (776 ) (776 ) Total derivatives $ 8,379 $ (4,876 ) $ 3,503 $ 11,456 $ (6,679 ) $ 4,777 Other financial instruments: Resale agreements and securities borrowing (4) $ 62,733 $ (36,580 ) $ 26,153 $ 62,522 $ (38,997 ) $ 23,525 Total derivatives and other financial instruments $ 71,112 $ (41,456 ) $ 29,656 $ 73,978 $ (45,676 ) $ 28,302 NA: Not applicable. (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Derivative amounts are carried at fair value and securities financing amounts are carried at amortized cost, except for securities collateral which are also carried at fair value. Refer to Note 1 to the consolidated financial statements on pages 129 to 132 in our 2015 Form 10-K for additional information on the measurement basis of these instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Included in the $26,153 million as of September 30, 2016 were $2,442 million of resale agreements and $23,711 million of collateral provided related to securities borrowing. Included in the $23,525 million as of December 31, 2015 were $3,404 million of resale agreements and $20,121 million of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. September 30, 2016 December 31, 2015 Gross Amounts Not Offset in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Net Amount of Assets Presented in Statement of Condition Counterparty Netting Cash and Securities Received (1) Net Amount (2) Net Amount of Assets Presented in Statement of Condition Counterparty Netting Cash and Securities Received (1) Net Amount (2) Derivatives $ 3,503 $ — $ (159 ) $ 3,344 $ 4,777 $ — $ (405 ) $ 4,372 Resale agreements and securities borrowing 26,153 (120 ) (25,783 ) 250 23,525 (63 ) (22,812 ) 650 Total $ 29,656 $ (120 ) $ (25,942 ) $ 3,594 $ 28,302 $ (63 ) $ (23,217 ) $ 5,022 ( 1) Includes securities in connection with our securities borrowing transactions. (2) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: September 30, 2016 December 31, 2015 (In millions) Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts of Recognized Liabilities (1) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Derivatives: Foreign exchange contracts $ 7,901 $ (3,936 ) $ 3,965 $ 10,868 $ (5,896 ) $ 4,972 Interest-rate contracts 189 (8 ) 181 182 (5 ) 177 Other derivative contracts 150 (3 ) 147 103 (2 ) 101 Cash collateral netting NA (731 ) (731 ) N/A (1,118 ) (1,118 ) Total derivatives $ 8,240 $ (4,678 ) $ 3,562 $ 11,153 $ (7,021 ) $ 4,132 Other financial instruments: Repurchase agreements and securities lending (4) $ 46,363 $ (36,580 ) $ 9,783 $ 46,766 $ (38,997 ) $ 7,769 Total derivatives and other financial instruments $ 54,603 $ (41,258 ) $ 13,345 $ 57,919 $ (46,018 ) $ 11,901 NA: Not applicable. (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Derivative amounts are carried at fair value and securities financing amounts are carried at amortized cost, except for securities collateral which are also carried at fair value. Refer to Note 1 to the consolidated financial statements on pages 129 to 132 in our 2015 Form 10-K for additional information on the measurement basis of these instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Included in the $9,783 million as of September 30, 2016 were $4,364 million of repurchase agreements and $5,419 million of collateral received related to securities lending. Included in the $7,769 million as of December 31, 2015 were $4,499 million of repurchase agreements and $3,270 million of collateral received related to securities lending. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilit ies, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. September 30, 2016 December 31, 2015 Gross Amounts Not Offset in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Net Amount of Liabilities Presented in Statement of Condition Counterparty Netting Cash and Securities Provided (1) Net Amount (2) Net Amount of Liabilities Presented in Statement of Condition Counterparty Netting Cash and Securities Provided (1) Net Amount (2) Derivatives $ 3,562 $ — $ (8 ) $ 3,554 $ 4,132 $ — $ (64 ) $ 4,068 Repurchase agreements and securities lending 9,783 (120 ) (7,461 ) 2,202 7,769 (63 ) (5,287 ) 2,419 Total $ 13,345 $ (120 ) $ (7,469 ) $ 5,756 $ 11,901 $ (63 ) $ (5,351 ) $ 6,487 ( 1) Includes securities provided in connection with our securities lending transactions. (2) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. The securities transferred under resale and repurchase agreements typically are U.S. Treasury, agency and agency mortgage-backed securities. In our principal securities borrowing and lending arrangements, the securities transferred in exchange for the collateral are predominantly equity securities and some corporate debt securities. The fair value of the securities transferred may increase in value to an amount greater than the amount received under our repurchase and securities lending arrangements, which exposes the Company with counterparty risk. We require the review of the price of the underlying securities in relation to the carrying value of the repurchase agreements and securities lending arrangements on a daily basis and when appropriate, adjust the cash or security to be obtained or returned to counterparties that is reflective of the required collateral levels. The following tables summarize our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements as of the periods indicated: Remaining Contractual Maturity of the Agreements As of September 30, 2016 (In millions) Overnight and Continuous Up to 30 days 30 – 90 days Total Repurchase agreements: U.S. Treasury and agency securities $ 35,399 $ 15 $ — $ 35,414 Non-U.S. sovereign debt — 57 — 57 Total 35,399 72 — 35,471 Securities lending transactions: Corporate debt securities 63 — — 63 Equity securities 9,526 — 894 10,420 Non-U.S. sovereign debt 409 — — 409 Total 9,998 — 894 10,892 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 45,397 $ 72 $ 894 $ 46,363 Remaining Contractual Maturity of the Agreements As of December 31, 2015 (In millions) Overnight and Continuous Up to 30 days 30 – 90 days Total Repurchase agreements: U.S. Treasury and agency securities $ 37,157 $ 5 $ — $ 37,162 Non-U.S. sovereign debt — 97 — 97 Total 37,157 102 — 37,259 Securities lending transactions: Corporate debt securities 1 — — 1 Equity securities 8,502 — 1,002 9,504 Non-U.S. sovereign debt 2 — — 2 Total 8,505 — 1,002 9,507 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 45,662 $ 102 $ 1,002 $ 46,766

Commitments and Guarantees

Commitments and Guarantees	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Guarantees	Commitments and Guarantees For additional information regarding our commitments and guarantees, refer to Note 12 in the consolidated financial statements on pages 173 to 174 in our 2015 Form 10-K. Commitments: We had unfunded off-balance sheet commitments to extend credit generally through lines of credit and short-duration advance facilities totaling $21.72 billion and $22.58 billion as of September 30, 2016 and December 31, 2015 , respectively. The maximum possible losses associated with these commitments, excluding the value of any collateral, equal the gross contractual amounts. As of September 30, 2016 , approximately 75% of our unfunded commitments to extend credit expire within one year. Since many of these commitments are expected to expire or renew without being drawn upon, the gross contractual amounts do not necessarily represent our future cash requirements. Guarantees: Off-balance sheet guarantees comprise indemnified securities financing, stable value protection, asset purchase agreements, and standby letters of credit. The following table, which presents the aggregate gross contractual amounts of our off-balance sheet guarantees as of the dates indicated, does not consider the value of any collateral, which may mitigate any potential loss. Amounts presented do not reflect participations to independent third parties. (In millions) September 30, 2016 December 31, 2015 Indemnified securities financing $ 344,191 $ 320,436 Stable value protection 27,319 24,583 Asset purchase agreements 4,989 3,990 Standby letters of credit 3,597 4,700 Indemnified Securities Financing On behalf of our clients, we lend their securities, as agent, to brokers and other institutions. In most circumstances, we indemnify our clients for the fair market value of those securities against a failure of the borrower to return such securities. The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Fair value of indemnified securities financing $ 344,191 $ 320,436 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 359,107 335,420 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 64,982 63,055 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 69,031 67,016 In certain cases, we participate in securities finance transactions as a principal. As a principal, we borrow securities from the lending client and then lend such securities to the subsequent borrower, either a State Street client or a broker/dealer. Collateral provided and received in connection with such transactions is recorded in other assets and accrued expenses and other liabilities, respectively, in our consolidated statement of condition. As of September 30, 2016 and December 31, 2015 , we had approximately $23.71 billion and $20.12 billion , respectively, of collateral provided and approximately $5.42 billion and $3.27 billion , respectively, of collateral received from clients in connection with our participation in principal securities finance transactions. Stable Value Protection In the normal course of our business, we offer products that provide book-value protection, primarily to plan participants in stable value funds managed by non-affiliated investment managers of post-retirement defined contribution benefit plans, particularly 401(k) plans. The book-value protection is provided on portfolios of intermediate investment grade fixed-income securities, and is intended to provide safety and stable growth of principal invested. The protection is intended to cover any shortfall in the event that a significant number of plan participants withdraw funds when book value exceeds market value and the liquidation of the assets is not sufficient to redeem the participants. The investment parameters of the underlying portfolios, combined with structural protections, are designed to provide cushion and guard against payments even under extreme stress scenarios. These contingencies are individually accounted for as derivative financial instruments. The notional amounts of the stable value contracts are presented as “derivatives not designated as hedging instruments” in the table of aggregate notional amounts of derivative financial instruments provided in Note 7 . We have not made a payment under these contingencies that we consider material to our consolidated financial condition, and management believes that the probability of payment under these contingencies in the future, that we would consider material to our consolidated financial condition, is remote.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal and Regulatory Matters: In the ordinary course of business, we and our subsidiaries are involved in disputes, litigation, and governmental or regulatory inquiries and investigations, both pending and threatened. These matters, if resolved adversely against us or settled, may result in monetary damages, fines and penalties or require changes in our business practices. The resolution or settlement of these matters is inherently difficult to predict. Based on our assessment of these pending matters, we do not believe that the amount of any judgment, settlement or other action arising from any pending matter is likely to have a material adverse effect on our consolidated financial condition. However, an adverse outcome in certain of the matters described below could have a material adverse effect on our consolidated results of operations for the period in which such matter is resolved, or an accrual is determined to be required, on our consolidated financial condition, or on our reputation. We evaluate our needs for accruals of loss contingencies related to legal proceedings on a case-by-case basis. When we have a liability that we deem probable and that we deem can be reasonably estimated as of the date of our consolidated financial statements, we accrue for our estimate of the loss. We also consider a loss probable and establish an accrual when we make, or intend to make, an offer of settlement. Once established, an accrual is subject to subsequent adjustment as a result of additional information. The resolution of proceedings and the reasonably estimable loss (or range thereof) are inherently difficult to predict, especially in the early stages of proceedings. Even if a loss is probable, due to many complex factors, such as speed of discovery and the timing of court decisions or rulings, a loss or range of loss might not be reasonably estimated until the later stages of the proceeding. As of September 30, 2016 , our aggregate accruals for legal loss contingencies and regulatory matters totaled approximately $622 million (excluding our accrual in connection with errors in invoicing certain of our Investment Servicing clients, described below). To the extent that we have established accruals in our consolidated statement of condition for probable loss contingencies, such accruals may not be sufficient to cover our ultimate financial exposure associated with any settlements or judgments. We may be subject to proceedings in the future that, if adversely resolved, would have a material adverse effect on our businesses or on our future consolidated financial statements. Except where otherwise noted below, we have not established accruals with respect to the claims discussed and do not believe that potential exposure is probable and can be reasonably estimated. The following discussion provides information with respect to significant legal and regulatory matters. Foreign Exchange We offer our custody clients and their investment managers the option to route foreign exchange transactions to our foreign exchange desk through our asset servicing operation. We record as revenue an amount approximately equal to the difference between the rates we set for those trades and indicative interbank market rates at the time of settlement of the trade. As discussed more fully below, claims have been asserted on behalf of certain current and former custody clients, and future claims may be asserted, alleging that our indirect foreign exchange rates (including the differences between those rates and indicative interbank market rates at the time we executed the trades) were not adequately disclosed or were otherwise improper, and seeking to recover, among other things, the full amount of the revenue we obtained from our indirect foreign exchange trading with them. Attorneys general and other government authorities from a number of jurisdictions, as well as U.S. Attorney's offices, the U.S. Department of Labor and the SEC, have requested information or issued subpoenas in connection with inquiries into the pricing of our indirect foreign exchange trading. In February 2011, a putative class action was filed in federal court in Boston seeking unspecified damages, including treble damages, on behalf of all custodial clients that executed certain foreign exchange transactions with State Street from 1998 to 2009. The putative class action alleges, among other things, that the rates at which State Street executed foreign currency trades constituted an unfair and deceptive practice under Massachusetts law and a breach of the duty of loyalty. Two other putative class actions are currently pending in federal court in Boston alleging various violations of ERISA on behalf of all ERISA plans custodied with us that executed indirect foreign exchange trades with State Street from 1998 onward. The complaints allege that State Street caused class members to pay unfair and unreasonable rates on indirect foreign exchange trades with State Street. The complaints seek unspecified damages, disgorgement of profits, and other equitable relief. Other claims may be asserted in the future, including in response to developments in the actions discussed above or governmental proceedings. If these matters were to proceed to trial, we expect that plaintiffs would seek to recover their share of all or a portion of the revenue that we have recorded from indirect foreign exchange trades. We cannot predict whether a court, in the event of an adverse resolution, would consider our revenue to be the appropriate measure of damages. The following table summarizes our estimated total revenue worldwide from indirect foreign exchange trading for the periods indicated: (In millions) Revenue from Indirect Foreign Exchange Trading Twelve Months Ended December 31, 2008 $ 462 Twelve Months Ended December 31, 2009 369 Twelve Months Ended December 31, 2010 336 Twelve Months Ended December 31, 2011 331 Twelve Months Ended December 31, 2012 248 Twelve Months Ended December 31, 2013 285 Twelve Months Ended December 31, 2014 246 Twelve Months Ended December 31, 2015 280 Nine Months Ended September 30, 2016 201 We believe that the amount of our revenue from such trading has been of a similar or lesser order of magnitude for many years prior to 2008. Our revenue calculations related to indirect foreign exchange trading reflect a judgment concerning the relationship between the rates we charge for indirect foreign exchange execution and indicative interbank market rates near in time to execution. Our revenue from foreign exchange trading generally depends on the difference between the rates we set for those indirect trades and indicative interbank market rates at the time of settlement of the trade. As of September 30, 2016 , we have accrued a total of $565 million associated with our indirect foreign exchange business. On July 26, 2016, we announced that we have negotiated settlement agreements which we expect, subject to final approval, to resolve these matters. Settlements have been reached with the Department of Justice, the Department of Labor and the Massachusetts Attorney General and, subject to court approval, the class plaintiffs. State Street has also reached an agreement in principle with the Securities and Exchange Commission. Each of these agreements depend upon certification, for settlement purposes, of a class of State Street's U.S. custody customers that executed indirect foreign exchange transactions with State Street between 1998 and 2009, and final approval by the United States District Court for the District of Massachusetts of the settlement agreement between State Street and the class. On November 2, 2016, the Court entered an order certifying the settlement class and approving the class settlement. The settlement approval order will become final in 30 days if it is not appealed. If the order becomes final, our settlements with the various government agencies will also become final. Although our current legal accrual is sufficient to satisfy our obligations under these settlements if they become final, there can be no assurance that the settlements will become final or that other, potentially material, claims relating to our indirect foreign exchange business will not be asserted against us in the United States or elsewhere. These settlements or an adverse outcome with respect to one or more other currently unasserted claims, relating to our indirect foreign exchange business could have a material adverse effect on our reputation, and any additional claims not currently asserted could have a material adverse effect on our consolidated results of operations for the period in which the adverse outcome occurs (or an accrual is determined to be required), or on our consolidated financial condition. Transition Management In January 2014, we entered into a settlement with the U.K. FCA, pursuant to which we paid a fine of £22.9 million (approximately $37.8 million ), as a result of our having charged six clients of our U.K. transition management business during 2010 and 2011 amounts in excess of the contractual terms. The SEC and the U.S. Attorney are conducting separate investigations into this matter. In April 2016, the U.S. Attorney’s office in Boston charged two former employees in our transition management business with criminal fraud in connection with their alleged role in this matter, and, in May 2016, the SEC commenced a parallel civil enforcement proceeding against one of these individuals. Any action by the SEC or U.S. Attorney with respect to State Street could include civil or criminal proceedings and could involve significant fines or other sanctions, any of which could have a material adverse effect on our reputation or on client demand for our products and services. We are in discussions with the SEC and the U.S. Attorney regarding a possible resolution of this matter. As of September 30, 2016 , we had accrued $44 million in connection with these discussions and for indemnification costs associated with this matter. GovEx We are cooperating in an ongoing inquiry by the SEC relating to the GovEx electronic trading platform, which was offered and operated by State Street Global Markets, LLC from September 2009 to July 2015. The subjects of the inquiry are our communications related to volume, pricing and functionalities of the platform. We are currently engaged in discussions with the SEC concerning a possible resolution of this matter. As of September 30, 2016, we had accrued $1 million for this matter. Federal Reserve/Massachusetts Division of Banks Written Agreement On June 1, 2015, we entered into a written agreement with the Federal Reserve and the Massachusetts Division of Banks relating to deficiencies identified in its compliance programs with the requirements of the Bank Secrecy Act, AML regulations and U.S. economic sanctions regulations promulgated by OFAC. As part of this enforcement action, State Street is required to, among other things, implement improvements to our compliance programs and to retain an independent firm to conduct a review of account and transaction activity covering a prior three-month period to evaluate whether any suspicious activity not previously reported should have been identified and reported in accordance with applicable regulatory requirements. If deficiencies in our historical reporting are identified as a result of the transaction review or if we fail to comply with the terms of the written agreement, we may become subject to fines and other regulatory sanctions, which may have a material adverse effect on us. Invoicing Matter In December 2015, we announced a review of the manner in which we invoiced certain expenses to certain of our Investment Servicing clients, primarily in the United States, during an 18 -year period going back to 1998 and our determination that we had incorrectly invoiced clients for certain expenses. We have informed our clients that we will pay to them the expenses we concluded were incorrectly invoiced to them, plus interest. Through September 30, 2016 , we had identified approximately $292 million (excluding interest), of such expenses and we are continuing to reimburse affected clients. In conjunction with that review, we are evaluating other aspects of invoicing relating to billing our Investment Servicing clients, including calculation of asset-based fees. We are in communication with certain governmental authorities about these matters, including the Department of Justice, the SEC, the Department of Labor and the Massachusetts Attorney General. In April 2016, the Massachusetts Secretary of State commenced an administrative enforcement proceeding against State Street Global Markets, LLC, alleging that our allegedly unethical behavior concerning expense invoices caused State Street Global Markets, LLC to violate state law governing the securities industry by virtue of our alleged control of State Street Global Markets, LLC. The complaint seeks to impose a censure, a fine and to provide for reimbursement or other relief. In addition, we have received a purported class action demand letter alleging that our invoicing practices were unfair and deceptive under Massachusetts law. It is possible that we may be required to reimburse clients for additional amounts, potentially including double or treble damages under Massachusetts law, clients or governmental authorities may assert other theories of liability, or we may become subject to other regulatory proceedings and litigation in connection with these matters, any of which could have a material adverse effect on our reputation or business, including on client demand for our products and services. Income Taxes: In determining our provision for income taxes, we make certain judgments and interpretations with respect to tax laws in jurisdictions in which we have business operations. Because of the complex nature of these laws, in the normal course of our business, we are subject to challenges from U.S. and non-U.S. income tax authorities regarding the amount of income taxes due. These challenges may result in adjustments to the timing or amount of taxable income or deductions or the allocation of taxable income among tax jurisdictions. We recognize a tax benefit when it is more likely than not that our position will result in a tax deduction or credit. Unrecognized tax benefits have increased from approximately $63 million as of December 31, 2015 to $66 million as of September 30, 2016 . We are presently under audit by a number of tax authorities and the Internal Revenue Service is currently reviewing our U.S. income tax returns for the tax years 2012 and 2013. The earliest tax year open to examination in jurisdictions where we have material operations is 2009. Management believes that we have sufficiently accrued liabilities as of September 30, 2016 for tax exposures.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Variable Interest Entities For additional information on our VIEs, refer to Note 14 to the consolidated financial statements on pages 176 to 177 in our 2015 Form 10-K. Tax-Exempt Investment Program: In the normal course of our business, we structure and sell certificated interests in pools of tax-exempt investment-grade assets, principally to our mutual fund clients. We structure these pools as partnership trusts, and the assets and liabilities of the trusts are recorded in our consolidated statement of condition as AFS investment securities and other short-term borrowings. As of September 30, 2016 and December 31, 2015 , we carried AFS investment securities, composed of securities related to state and political subdivisions, with a fair value of $1.76 billion and $2.10 billion , respectively, and other short-term borrowings of $1.39 billion and $1.75 billion , respectively, in our consolidated statement of condition in connection with these trusts. The interest revenue and interest expense generated by the investments and certificated interests, respectively, are recorded as components of net interest revenue when earned or incurred. The trusts had a weighted-average life of approximately 4.8 years as of September 30, 2016 , compared to approximately 5.4 years as of December 31, 2015 . Under separate legal agreements, we provide standby bond-purchase agreements to these trusts and, with respect to certain securities, letters of credit. As of September 30, 2016 , our commitments to the trusts under these standby bond-purchase agreements and letters of credit totaled $1.62 billion and $530 million , respectively, and $81 million of the standby bond-purchase agreements were utilized. Interests in Sponsored Investment Funds: As of September 30, 2016 , the aggregate assets and liabilities of our consolidated sponsored investment funds totaled $409 million and $327 million , respectively. As of December 31, 2015 , the aggregate assets and liabilities of our consolidated sponsored investment funds totaled $321 million and $228 million , respectively. As of September 30, 2016 , our potential maximum total exposure associated with the consolidated sponsored investment funds totaled $51 million and represented the value of our economic ownership interest in the fund. Subsequently, we divested our interests in the funds as of October 31, 2016 and no longer consolidate the sponsored investment funds. As of September 30, 2016 and December 31, 2015 , we managed certain sponsored investment funds, considered VIEs, in which we held a variable interest but for which we were not deemed to be the primary beneficiary. Our potential maximum loss exposure related to these unconsolidated funds totaled $92 million and $75 million as of September 30, 2016 and December 31, 2015 , respectively, and represented the carrying value of our seed capital investment, which is recorded in either AFS investment securities or other assets in our consolidated statement of condition. The amount of loss we may recognize during any period is limited to the carrying amount of our seed capital investment in the unconsolidated fund.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Stockholders' Equity	Shareholders' Equity Preferred Stock: The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of September 30, 2016 : Issuance Date Depositary Shares Issued Ownership Interest per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Net Proceeds of Offering (In millions) Redemption Date (1) Preferred Stock (2) : Series C August 2012 20,000,000 1/4,000th $ 100,000 $ 25 $ 488 September 15, 2017 Series D February 2014 30,000,000 1/4,000th 100,000 25 742 March 15, 2024 Series E November 2014 30,000,000 1/4,000th 100,000 25 728 December 15, 2019 Series F May 2015 750,000 1/100th 100,000 1,000 742 September 15, 2020 Series G April 2016 20,000,000 1/4,000th 100,000 25 493 March 15, 2026 (1) On the redemption date, or any dividend declaration date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. The following tables present the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Three Months Ended September 30, 2016 2015 Dividends Declared per Share Dividends Declared per Depositary Share Total (1) Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Preferred Stock: Series C $ 1,313 $ 0.33 $ 6 $ 1,313 $ 0.33 $ 7 Series D 1,475 0.37 11 1,475 0.37 11 Series E 1,500 0.38 11 1,500 0.38 11 Series F 2,625 26.25 20 1,663 16.63 12 Series G 1,338 0.33 7 — — — Total $ 55 $ 41 Nine Months Ended September 30, 2016 2015 Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Preferred Stock: Series C $ 3,939 $ 0.99 $ 19 $ 3,939 $ 0.99 $ 20 Series D 4,425 1.11 33 4,425 1.11 33 Series E 4,500 1.14 33 4,833 1.22 36 Series F 5,250 52.50 40 1,663 16.63 12 Series G 2,289 0.57 12 — — — Total $ 137 $ 101 (1) Dividends were paid in September 2016. Common Stock: In June 2016, our Board approved a common stock purchase program authorizing the purchase of up to $1.4 billion of our common stock through June 30, 2017 (the 2016 Program). In March 2015, our Board approved a common stock purchase program authorizing the purchase of up to $1.8 billion of our common stock through June 30, 2016 (the 2015 Program). The table below presents the activity under both the 2016 Program and the 2015 Program during the periods indicated. Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016 Shares Purchased Average Cost per Share Total Purchased Shares Purchased Average Cost per Share Total Purchased 2015 Program — $ — $ — 12.1 $ 58.83 $ 715 2016 Program 4.7 69.03 325 4.7 69.03 325 Total 4.7 $ 69.03 $ 325 16.8 $ 61.68 $ 1,040 The table below presents the dividends declared on common stock for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) 2016 2015 2016 2015 Common Stock $ 0.38 $ 147 $ 0.34 $ 138 $ 1.06 $ 414 $ 0.98 $ 401 Accumulated Other Comprehensive Income (Loss): The following table presents the after-tax components of AOCI as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Net unrealized gains on cash flow hedges $ 80 $ 293 Net unrealized gains (losses) on available-for-sale securities portfolio 542 9 Net unrealized gains (losses) related to reclassified available-for-sale securities (28 ) (28 ) Net unrealized gains (losses) on available-for-sale securities 514 (19 ) Net unrealized losses on available-for-sale securities designated in fair value hedges (118 ) (109 ) Net unrealized gains (losses) on hedges of net investments in non-U.S. subsidiaries 41 (14 ) Other-than-temporary impairment on held-to-maturity securities related to factors other than credit (11 ) (16 ) Net unrealized losses on retirement plans (182 ) (183 ) Foreign currency translation (1,317 ) (1,394 ) Total $ (993 ) $ (1,442 ) The following tables present changes in AOCI by component, net of related taxes, for the periods indicated: Nine Months Ended September 30, 2016 (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2015 $ 293 $ (128 ) $ (14 ) $ (16 ) $ (183 ) $ (1,394 ) $ (1,442 ) Other comprehensive income (loss) before reclassifications (213 ) 520 55 6 — 77 445 Amounts reclassified into (out of) earnings — 4 — (1 ) 1 — 4 Other comprehensive income (loss) (213 ) 524 55 5 1 77 449 Balance as of September 30, 2016 $ 80 $ 396 $ 41 $ (11 ) $ (182 ) $ (1,317 ) $ (993 ) Nine Months Ended September 30, 2015 (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Losses on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2014 $ 276 $ 192 $ (14 ) $ (29 ) $ (272 ) $ (660 ) $ (507 ) Other comprehensive income (loss) before reclassifications 44 (112 ) — 12 — (555 ) (611 ) Amounts reclassified into (out of) earnings 2 (3 ) — (1 ) 19 — 17 Other comprehensive income (loss) 46 (115 ) — 11 19 (555 ) (594 ) Balance as of September 30, 2015 $ 322 $ 77 $ (14 ) $ (18 ) $ (253 ) $ (1,215 ) $ (1,101 ) The following tables present after-tax reclassifications into (out of) earnings for the periods indicated: Three Months Ended September 30, 2016 2015 (In millions) Amounts Reclassified into (out of) Earnings Affected Line Item in Consolidated Statement of Income Cash flow hedges: Interest-rate contracts $ — $ 1 Net interest revenue Available-for-sale securities: Net realized gains from sales of available-for-sale securities, net of related taxes of ($2) and $0, respectively 2 (1 ) Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related tax benefit of $1 and $0, respectively — — Losses reclassified (from) to other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of $1 and ($3), respectively (1 ) 4 Compensation and employee benefits expenses Total reclassifications into AOCI $ 1 $ 4 Nine Months Ended September 30, 2016 2015 (In millions) Amounts Reclassified into (out of) Earnings Affected Line Item in Consolidated Statement of Income Cash flow hedges: Interest-rate contracts, net of related taxes of $0 and $1, respectively $ — $ 2 Net interest revenue Available-for-sale securities: Net realized gains from sales of available-for-sale securities, net of related taxes of ($3) and $1, respectively 4 (3 ) Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of $1 and $0, respectively (1 ) (1 ) Losses reclassified (from) to other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of ($2) and ($4), respectively 1 19 Compensation and employee benefits expenses Total reclassifications into AOCI $ 4 $ 17

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Regulatory Capital	Regulatory Capital We are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum regulatory capital requirements can initiate certain mandatory and discretionary actions by regulators that, if undertaken, could have a direct material effect on our consolidated financial condition. Under current regulatory capital adequacy guidelines, we must meet specified capital requirements that involve quantitative measures of our consolidated assets, liabilities and off-balance sheet exposures calculated in conformity with regulatory accounting practices. Our capital components and their classifications are subject to qualitative judgments by regulators about components, risk weightings and other factors. For additional information on regulatory capital, and the requirements to which we are subject, refer to Note 16 to the consolidated financial statements on pages 180 and 181 in our 2015 Form 10-K. As required by the Dodd-Frank Act, State Street and State Street Bank, as advanced approaches banking organizations, are subject to a permanent "capital floor" in the calculation and assessment of their regulatory capital adequacy by U.S. banking regulators. Beginning on January 1, 2015, we were required to calculate our risk-based capital ratios using both the advanced approaches and the standardized approach. As a result, from January 1, 2015 going forward, our risk-based capital ratios for regulatory assessment purposes are the lower of each ratio calculated under the standardized approach and the advanced approaches. The methods for the calculation of our and State Street Bank's risk-based capital ratios will change as the provisions of the Basel III final rule related to the numerator (capital) and denominator (risk-weighted assets) are phased in, and as we begin calculating our risk-weighted assets using the advanced approaches. These ongoing methodological changes will result in differences in our reported capital ratios from one reporting period to the next that are independent of applicable changes to our capital base, our asset composition, our off-balance sheet exposures or our risk profile. As of September 30, 2016 , State Street and State Street Bank exceeded all regulatory capital adequacy requirements to which they were subject. As of September 30, 2016 , State Street Bank was categorized as “well capitalized” under the applicable regulatory capital adequacy framework, and exceeded all “well capitalized” ratio guidelines to which it was subject. Management believes that no conditions or events have occurred since September 30, 2016 that have changed the capital categorization of State Street Bank. The following table presents the regulatory capital structure, total risk-weighted assets, related regulatory capital ratios and the minimum required regulatory capital ratios for State Street and State Street Bank as of the dates indicated. As a result of changes in the methodologies used to calculate our regulatory capital ratios from period to period as the provisions of the Basel III final rule are phased in, the ratios presented in the table for each period-end are not directly comparable. Refer to the footnotes following the table. State Street State Street Bank (In millions) Basel III Advanced Approaches September 30, 2016 (1) Basel III Standardized Approach September 30, 2016 (2) Basel III Advanced Approaches December 31, 2015 (1) Basel III Standardized Approach December 31, 2015 (2) Basel III Advanced Approaches September 30, 2016 (1) Basel III Standardized Approach September 30, 2016 (2) Basel III Advanced Approaches December 31, 2015 (1) Basel III Standardized Approach December 31, 2015 (2) Common shareholders' equity: Common stock and related surplus $ 10,282 $ 10,282 $ 10,250 $ 10,250 $ 11,339 $ 11,339 $ 10,938 $ 10,938 Retained earnings 17,047 17,047 16,049 16,049 11,593 11,593 10,655 10,655 Accumulated other comprehensive income (loss) (1,107 ) (1,107 ) (1,422 ) (1,422 ) (880 ) (880 ) (1,230 ) (1,230 ) Treasury stock, at cost (7,382 ) (7,382 ) (6,457 ) (6,457 ) — — — — Total 18,840 18,840 18,420 18,420 22,052 22,052 20,363 20,363 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (3) (6,483 ) (6,483 ) (5,927 ) (5,927 ) (6,152 ) (6,152 ) (5,631 ) (5,631 ) Other adjustments (88 ) (88 ) (60 ) (60 ) (83 ) (83 ) (85 ) (85 ) Common equity tier 1 capital 12,269 12,269 12,433 12,433 15,817 15,817 14,647 14,647 Preferred stock 3,196 3,196 2,703 2,703 — — — — Trust preferred capital securities subject to phase-out from tier 1 capital — — 237 237 — — — — Other adjustments (58 ) (58 ) (109 ) (109 ) — — — — Tier 1 capital 15,407 15,407 15,264 15,264 15,817 15,817 14,647 14,647 Qualifying subordinated long-term debt 1,259 1,259 1,358 1,358 1,270 1,270 1,371 1,371 Trust preferred capital securities phased out of tier 1 capital 890 890 713 713 — — — — ALLL and other 3 75 12 66 4 75 8 66 Other adjustments 1 1 2 2 — — — — Total capital $ 17,560 $ 17,632 $ 17,349 $ 17,403 $ 17,091 $ 17,162 $ 16,026 $ 16,084 Risk-weighted assets: Credit risk $ 51,916 $ 96,668 $ 51,733 $ 93,515 $ 47,609 $ 92,165 $ 47,677 $ 89,164 Operational risk 44,643 NA 43,882 NA 44,115 NA 43,324 NA Market risk (4) 3,177 1,706 3,937 2,378 3,177 1,706 3,939 2,378 Total risk-weighted assets $ 99,736 $ 98,374 $ 99,552 $ 95,893 $ 94,901 $ 93,871 $ 94,940 $ 91,542 Adjusted quarterly average assets $ 226,093 $ 226,093 $ 221,880 $ 221,880 $ 221,508 $ 221,508 $ 217,358 $ 217,358 Capital Ratios: 2016 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (5) 2015 Minimum Requirements (6) Common equity tier 1 capital 5.5 % 4.5 % 12.3 % 12.5 % 12.5 % 13.0 % 16.7 % 16.8 % 15.4 % 16.0 % Tier 1 capital 7.0 6.0 15.4 15.7 15.3 15.9 16.7 16.8 15.4 16.0 Total capital 9.0 8.0 17.6 17.9 17.4 18.1 18.0 18.3 16.9 17.6 Tier 1 leverage 4.0 4.0 6.8 6.8 6.9 6.9 7.1 7.1 6.7 6.7 NA: Not applicable. (1) Common equity tier 1 capital, tier 1 capital and total capital ratios as of September 30, 2016 and December 31, 2015 were calculated in conformity with the advanced approaches provisions of the Basel III final rule. Tier 1 leverage ratio as of September 30, 2016 and December 31, 2015 were calculated in conformity with the Basel III final rule. (2) Common equity tier 1 capital, tier 1 capital and total capital ratios as of September 30, 2016 and December 31, 2015 were calculated in conformity with the standardized approach provisions of the Basel III final rule. Tier 1 leverage ratio as of September 30, 2016 and December 31, 2015 were calculated in conformity with the Basel III final rule. (3) Amounts for State Street and State Street Bank as of September 30, 2016 consisted of goodwill, net of associated deferred tax liabilities, and 60% of other intangible assets, net of associated deferred tax liabilities. Amounts for State Street and State Street Bank as of December 31, 2015 consisted of goodwill, net of deferred tax liabilities and 40% of other intangible assets, net of associated deferred tax liabilities. Intangible assets, net of associated deferred tax liabilities is phased in as a deduction from capital, in conformity with the Basel III final rule. (4) Market risk risk-weighted assets reported in conformity with the Basel III advanced approaches included a CVA which reflected the risk of potential fair-value adjustments for credit risk reflected in our valuation of over-the-counter derivative contracts. The CVA was not provided for in the final market risk capital rule; however, it was required by the advanced approaches provisions of the Basel III final rule. State Street used the simple CVA approach in conformity with the Basel III advanced approaches. (5) Minimum requirements will be phased in up to full implementation beginning on January 1, 2019; minimum requirements listed are as of September 30, 2016 . (6) Minimum requirements will be phased in up to full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2015 .

Net Interest Revenue

Net Interest Revenue	9 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Net Interest Revenue	Net Interest Revenue The following table presents the components of interest revenue and interest expense, and related net interest revenue, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Interest revenue: Deposits with banks $ 29 $ 53 $ 101 $ 161 Investment securities: U.S. Treasury and federal agencies 200 178 620 537 State and political subdivisions 55 57 162 173 Other investments 208 227 580 733 Securities purchased under resale agreements 40 18 112 45 Trading account assets — — 1 — Loans and leases 97 79 281 229 Other interest-earning assets 18 2 39 7 Total interest revenue 647 614 1,896 1,885 Interest expense: Deposits 20 28 73 67 Securities sold under repurchase agreements — — 1 — Short-term borrowings 2 1 4 5 Long-term debt 68 62 191 185 Other interest-bearing liabilities 20 10 57 34 Total interest expense 110 101 326 291 Net interest revenue $ 537 $ 513 $ 1,570 $ 1,594

Expenses

Expenses	9 Months Ended
	Sep. 30, 2016
Other Expenses [Abstract]
Expenses	Expenses The following table presents the components of other expenses for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Litigation $ 47 $ (7 ) $ 47 $ 396 Insurance 31 33 74 98 Regulatory fees and assessments 28 31 65 90 Securities processing 10 40 20 75 Other 71 44 231 186 Total other expenses $ 187 $ 141 $ 437 $ 845 Acquisition Costs We recorded acquisition costs of $33 million in the third quarter of 2016 compared to $7 million in the third quarter of 2015, and $47 million in the nine months ended September 30, 2016 compared to $15 million during the nine months ended September 30, 2015. These amounts include approximately $29 million related to our acquisition of GEAM on July 1, 2016. As of September 30, 2016 , we have recorded approximately $29 million in acquisition costs associated with the acquisition of GEAM. For further information on the GEAM acquisition, refer to Note 1. Restructuring Charges We expect to incur aggregate pre-tax restructuring charges of approximately $300 million to $400 million beginning in 2016 through December 31, 2020 to implement State Street Beacon, our previously announced multi-year transformation program to fully digitize our business, deliver significant value and innovation for our clients and lower expenses across the organization. We estimate those charges will include approximately $250 million to $300 million in severance and benefits costs associated with targeted staff reductions (a substantial portion of which will result in future cash expenditures) and approximately $50 million to $100 million in information technology application rationalization and real estate actions. In the third quarter and nine months ended September 30, 2016 , we recorded net restructuring charges of $10 million and $120 million , respectively, due to State Street Beacon. The following table presents aggregate restructuring activity for the periods indicated. (In millions) Employee Real Estate Asset and Other Write-offs Total Balance at December 31, 2015 $ 9 $ 11 $ 3 $ 23 Accruals for State Street Beacon 86 — 11 97 Payments and Other Adjustments (4 ) (1 ) (7 ) (12 ) Balance at March 31, 2016 91 10 7 108 Accruals for State Street Beacon (1 ) 15 (1 ) 13 Payments and Other Adjustments (35 ) (3 ) (1 ) (39 ) Balance at June 30, 2016 55 22 5 82 Accruals for State Street Beacon 8 3 (1 ) 10 Payments and Other Adjustments (14 ) (3 ) (1 ) (18 ) Balance at September 30, 2016 $ 49 $ 22 $ 3 $ 74

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share Basic EPS is calculated pursuant to the “two-class” method, by dividing net income available to common shareholders by the weighted-average common shares outstanding during the period. Diluted EPS is calculated pursuant to the two-class method, by dividing net income available to common shareholders by the total weighted-average number of common shares outstanding for the period plus the shares representing the dilutive effect of common stock options and other equity-based awards. The effect of common stock options and other equity-based awards is excluded from the calculation of diluted EPS in periods in which their effect would be anti-dilutive. The two-class method requires the allocation of undistributed net income between common and participating shareholders. Net income available to common shareholders, presented separately in our consolidated statement of income, is the basis for the calculation of both basic and diluted EPS. Participating securities are composed of unvested restricted stock and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended September 30, (Dollars in millions, except per share amounts) 2016 2015 Net income $ 563 $ 581 Less: Preferred stock dividends (55 ) (42 ) Dividends and undistributed earnings allocated to participating securities (1) (1 ) — Net income available to common shareholders $ 507 $ 539 Average common shares outstanding (In thousands): Basic average common shares 388,358 406,612 Effect of dilutive securities: common stock options and common stock awards 4,854 5,555 Diluted average common shares 393,212 412,167 Anti-dilutive securities (2) 2,166 619 Earnings per Common Share: Basic $ 1.31 $ 1.33 Diluted (3) 1.29 1.31 Nine Months Ended September 30, (Dollars in millions, except per share amounts) 2016 2015 Net income $ 1,550 $ 1,404 Less: Preferred stock dividends (137 ) (102 ) Dividends and undistributed earnings allocated to participating securities (1) (2 ) (1 ) Net income available to common shareholders $ 1,411 $ 1,301 Average common shares outstanding (In thousands): Basic average common shares 393,959 409,816 Effect of dilutive securities: common stock options and common stock awards 4,454 5,956 Diluted average common shares 398,413 415,772 Anti-dilutive securities (2) 3,027 675 Earnings per Common Share: Basic $ 3.58 $ 3.18 Diluted (3) 3.54 3.13 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of fully vested deferred director stock and unvested restricted stock that contain non-forfeitable rights to dividends during the vesting period on a basis equivalent to dividends paid to common shareholders. (2) Represents common stock options and other equity-based awards outstanding but not included in the computation of diluted average common shares, because their effect was anti-dilutive. (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information

Line of Business Information	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Line of Business Information	Line of Business Information Our operations are organized for management reporting purposes into two lines of business: Investment Servicing and Investment Management, which are defined based on products and services provided. The results of operations for these lines of business are not necessarily comparable with those of other companies, including companies in the financial services industry. For information about our two lines of business, as well as revenues, expenses and capital allocation methodologies associated with them, refer to Note 24 to the consolidated financial statements on pages 188 to 189 in our 2015 Form 10-K. The following is a summary of our line-of-business results for the periods indicated. The “Other” column represents costs incurred that are not allocated to a specific line of business, including certain severance and restructuring costs, acquisition costs and certain provisions for legal contingencies. Three Months Ended September 30, Investment Investment Other Total (Dollars in millions, except where otherwise noted) 2016 2015 2016 2015 2016 2015 2016 2015 Servicing fees $ 1,303 $ 1,289 $ — $ — $ — $ — $ 1,303 $ 1,289 Management fees — — 368 287 — — 368 287 Trading services 254 283 13 11 — — 267 294 Securities finance 136 113 — — — — 136 113 Processing fees and other 6 131 (1 ) (11 ) — — 5 120 Total fee revenue 1,699 1,816 380 287 — — 2,079 2,103 Net interest revenue 536 514 1 (1 ) — — 537 513 Gains (losses) related to investment securities, net 4 (2 ) — — — — 4 (2 ) Total revenue 2,239 2,328 381 286 — — 2,620 2,614 Provision for loan losses — 5 — — — — — 5 Total expenses 1,634 1,673 317 204 33 85 1,984 1,962 Income before income tax expense $ 605 $ 650 $ 64 $ 82 $ (33 ) $ (85 ) $ 636 $ 647 Pre-tax margin 27 % 28 % 17 % 29 % 24 % 25 % Nine Months Ended September 30, Investment Investment Other Total (Dollars in millions, except where otherwise noted) 2016 2015 2016 2015 2016 2015 2016 2015 Servicing fees $ 3,784 $ 3,876 $ — $ — $ — $ — $ 3,784 $ 3,876 Management fees — — 931 892 — — 931 892 Trading services 771 869 35 30 — — 806 899 Securities finance 426 369 — — — — 426 369 Processing fees and other 153 212 2 (14 ) — — 155 198 Total fee revenue 5,134 5,326 968 908 — — 6,102 6,234 Net interest revenue 1,567 1,593 3 1 — — 1,570 1,594 Gains (losses) related to investment securities, net 5 (6 ) — — — — 5 (6 ) Total revenue 6,706 6,913 971 909 — — 7,677 7,822 Provision for loan losses 8 11 — — — — 8 11 Total expenses 4,920 5,389 817 711 157 93 5,894 6,193 Income before income tax expense $ 1,778 $ 1,513 $ 154 $ 198 $ (157 ) $ (93 ) $ 1,775 $ 1,618 Pre-tax margin 27 % 22 % 16 % 22 % 23 % 21 %

Non-U.S. Activities

Non-U.S. Activities	9 Months Ended
	Sep. 30, 2016
Segments, Geographical Areas [Abstract]
Non-U.S. Activities	Non-U.S. Activities We define our non-U.S. activities as those revenue-producing business activities that arise from clients which are generally serviced or managed outside the U.S. Due to the integrated nature of our business, precise segregation of our U.S. and non-U.S. activities is not possible. Subjective estimates, assumptions and other judgments are applied to quantify the financial results and assets related to our non-U.S. activities, including our application of funds transfer pricing, our asset-and-liability management policies and our allocation of certain indirect corporate expenses. Management periodically reviews and updates its processes for quantifying the financial results and assets related to our non-U.S. activities. The following table presents our U.S. and non-U.S. financial results for the periods indicated: Three Months Ended September 30, 2016 Three Months Ended September 30, 2015 (In millions) Non-U.S. U.S. Total Non-U.S. U.S. Total Total revenue $ 1,117 $ 1,503 $ 2,620 $ 1,088 $ 1,526 $ 2,614 Income before income taxes 314 322 636 255 392 647 Nine Months Ended September 30, 2016 Nine Months Ended September 30, 2015 (In millions) Non-U.S. U.S. Total Non-U.S. U.S. Total Total revenue $ 3,278 $ 4,399 $ 7,677 $ 3,385 $ 4,437 $ 7,822 Income before income taxes 835 940 1,775 946 672 1,618 Non-U.S. assets were $86.7 billion and $63.3 billion as of September 30, 2016 and 2015 , respectively.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the parent company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis. Our principal banking subsidiary is State Street Bank. The accompanying Consolidated Financial Statements should be read in conjunction with the financial and risk factor information included in our 2015 Form 10-K, which we previously filed with the SEC.
Consolidation	The consolidated financial statements accompanying these condensed notes are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair statement of the consolidated results of operations in these financial statements, have been made. Certain previously reported amounts presented in this Form 10-Q have been reclassified to conform to current-period presentation. Events occurring subsequent to the date of our consolidated statement of condition were evaluated for potential recognition or disclosure in our consolidated financial statements through the date we filed this Form 10-Q with the SEC. The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue, and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates. These accounting estimates reflect the best judgment of management, but actual results could differ. Our consolidated statement of condition as of December 31, 2015 included in the accompanying consolidated financial statements was derived from the audited financial statements as of that date, but does not include all notes required by U.S. GAAP for a complete set of consolidated financial statements. Acquisition
Recent Accounting Developments	Recent Accounting Developments: Relevant standards that were recently issued but not yet adopted Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2014-09, Revenue from Contracts with Customers (Topic 606) The standard, and its related amendments, will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements with customers. It may be adopted either retrospectively or on a modified retrospective basis to new contracts and existing contracts with remaining performance obligations as of the effective date. January 1, 2018 We are currently assessing the impact of the standard and its amendments on our consolidated financial statements and evaluating the alternative methods of adoption. ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The standard makes limited amendments to the guidance on the classification and measurement of financial instruments. Under the new standard, all equity securities will be measured at fair value through earnings with certain exceptions, including investments accounted for under the equity method of accounting. In addition, the FASB clarified the guidance related to valuation allowance assessments when recognizing deferred tax assets on unrealized losses on available-for-sale debt securities. This standard must be applied on a retrospective basis. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-02, Leases (Topic 842) The standard represents a wholesale change to lease accounting and requires all leases, other than short-term leases, to be reported on balance sheet through recognition of a right-of-use asset and a corresponding liability for future lease obligations. The standard also requires extensive disclosures for assets, expenses, and cash flows associated with leases, as well as a maturity analysis of lease liabilities. January 1, 2019 We are currently assessing the impact of the standard on our consolidated financial statements, but we anticipate an increase in assets and liabilities due to the recognition of the required right-of-use asset and corresponding liability for all lease obligations that are currently classified as operating leases, as well as additional disclosure on our leases. ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships (a consensus of the Emerging Issues Task Force) The standard clarifies that a change in the counterparty to a derivative instrument that is designated as a hedging instrument would result in dedesignation of the hedging relationship. This may be applied on a prospective or modified retrospective basis. January 1, 2017 Our adoption of the standard will not have a material impact on our consolidated financial statements. ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting The standard simplifies the guidance related to stock compensation, including the accounting for income taxes by eliminating the windfall pool and requiring recognition of all excess tax benefits and deficiencies within the statement of income, as well as changes in the accounting for forfeitures, classification in the statement of cash flows and tax withholding requirements. January 1, 2017 We anticipate increased income statement volatility due to the recognition of all excess tax benefits and deficiencies within the statement of income. We do not anticipate early adoption of this standard. ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard requires all expected credit losses for financial assets held at the reporting date to be measured based on historical experience, current conditions, and reasonable supportable forecasts. The standard will utilize forward-looking information to determine credit loss estimates. It will require immediate recognition of the full amount of credit losses that are expected for certain financial assets. January 1, 2020 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) The standard amends the statement of cash flow guidance to address specific cash flow issues with the objective of reducing the existing diversity in practice. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements, however based on our current presentation we do not anticipate a significant change to our financial statement presentation of the statement of cash flows. Relevant standards that were adopted during the nine months ended September 30, 2016: We adopted ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, effective January 1, 2016. The implementation of the new standard did not result in any changes to our previous consolidation conclusions. We adopted ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs , effective January 1, 2016 with retrospective application for all prior periods presented. The implementation of this standard resulted in debt issuance costs of $40 million and $37 million as of September 30, 2016 and December 31, 2015, respectively, being netted against long-term debt in our consolidated statement of condition.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Recent Accounting Developments	Relevant standards that were recently issued but not yet adopted Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2014-09, Revenue from Contracts with Customers (Topic 606) The standard, and its related amendments, will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements with customers. It may be adopted either retrospectively or on a modified retrospective basis to new contracts and existing contracts with remaining performance obligations as of the effective date. January 1, 2018 We are currently assessing the impact of the standard and its amendments on our consolidated financial statements and evaluating the alternative methods of adoption. ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The standard makes limited amendments to the guidance on the classification and measurement of financial instruments. Under the new standard, all equity securities will be measured at fair value through earnings with certain exceptions, including investments accounted for under the equity method of accounting. In addition, the FASB clarified the guidance related to valuation allowance assessments when recognizing deferred tax assets on unrealized losses on available-for-sale debt securities. This standard must be applied on a retrospective basis. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-02, Leases (Topic 842) The standard represents a wholesale change to lease accounting and requires all leases, other than short-term leases, to be reported on balance sheet through recognition of a right-of-use asset and a corresponding liability for future lease obligations. The standard also requires extensive disclosures for assets, expenses, and cash flows associated with leases, as well as a maturity analysis of lease liabilities. January 1, 2019 We are currently assessing the impact of the standard on our consolidated financial statements, but we anticipate an increase in assets and liabilities due to the recognition of the required right-of-use asset and corresponding liability for all lease obligations that are currently classified as operating leases, as well as additional disclosure on our leases. ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships (a consensus of the Emerging Issues Task Force) The standard clarifies that a change in the counterparty to a derivative instrument that is designated as a hedging instrument would result in dedesignation of the hedging relationship. This may be applied on a prospective or modified retrospective basis. January 1, 2017 Our adoption of the standard will not have a material impact on our consolidated financial statements. ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting The standard simplifies the guidance related to stock compensation, including the accounting for income taxes by eliminating the windfall pool and requiring recognition of all excess tax benefits and deficiencies within the statement of income, as well as changes in the accounting for forfeitures, classification in the statement of cash flows and tax withholding requirements. January 1, 2017 We anticipate increased income statement volatility due to the recognition of all excess tax benefits and deficiencies within the statement of income. We do not anticipate early adoption of this standard. ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard requires all expected credit losses for financial assets held at the reporting date to be measured based on historical experience, current conditions, and reasonable supportable forecasts. The standard will utilize forward-looking information to determine credit loss estimates. It will require immediate recognition of the full amount of credit losses that are expected for certain financial assets. January 1, 2020 We are currently assessing the impact of the standard on our consolidated financial statements. ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) The standard amends the statement of cash flow guidance to address specific cash flow issues with the objective of reducing the existing diversity in practice. January 1, 2018 We are currently assessing the impact of the standard on our consolidated financial statements, however based on our current presentation we do not anticipate a significant change to our financial statement presentation of the statement of cash flows.

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated. No transfers of financial assets or liabilities between levels 1 and 2 occurred in the nine months ended September 30, 2016 or the year ended December 31, 2015 . Fair-Value Measurements on a Recurring Basis as of September 30, 2016 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 57 $ — $ — $ 57 Non-U.S. government securities 425 — — 425 Other 44 537 — 581 Total trading account assets 526 537 — 1,063 AFS Investment securities: U.S. Treasury and federal agencies: Direct obligations 4,846 456 — 5,302 Mortgage-backed securities — 17,945 50 17,995 Asset-backed securities: Student loans — 7,115 192 7,307 Credit cards — 1,375 — 1,375 Sub-prime — 354 — 354 Other (2) — — 1,273 1,273 Total asset-backed securities — 8,844 1,465 10,309 Non-U.S. debt securities: Mortgage-backed securities — 7,071 90 7,161 Asset-backed securities — 2,391 138 2,529 Government securities — 5,984 — 5,984 Other (3) — 5,461 458 5,919 Total non-U.S. debt securities — 20,907 686 21,593 State and political subdivisions — 10,716 40 10,756 Collateralized mortgage obligations — 2,704 102 2,806 Other U.S. debt securities — 2,338 — 2,338 U.S. equity securities — 41 — 41 Non-U.S. equity securities — 3 — 3 U.S. money-market mutual funds — 361 — 361 Non-U.S. money-market mutual funds — 16 — 16 Total investment securities available-for-sale 4,846 64,331 2,343 71,520 Other assets: Derivative instruments: Foreign exchange contracts — 8,137 — $ (4,679 ) 3,458 Interest-rate contracts — 239 — (194 ) 45 Other derivative contracts — 3 — (3 ) — Total derivative instruments — 8,379 — (4,876 ) 3,503 Other 409 — — — 409 Total assets carried at fair value $ 5,781 $ 73,247 $ 2,343 $ (4,876 ) $ 76,495 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: U.S. government securities $ 15 $ — $ — $ — $ 15 Non-U.S. government securities 60 — — — 60 Other 32 6 — — 38 Derivative instruments: Foreign exchange contracts — 7,901 — (4,636 ) 3,265 Interest-rate contracts — 189 — (39 ) 150 Other derivative contracts — 150 — (3 ) 147 Total derivative instruments — 8,240 — (4,678 ) 3,562 Other 409 — — — 409 Total liabilities carried at fair value $ 516 $ 8,246 $ — $ (4,678 ) $ 4,084 (1) R epresents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between State Street and the counterparty. Netting also reflects asset and liability reductions of $929 million and $731 million , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of September 30, 2016 , the fair value of other asset-backed securities was primarily composed of $1.27 billion of collateralized loan obligations. (3) As of September 30, 2016 , the fair value of other non-U.S. debt securities was primarily composed of $3.98 billion of covered bonds and $981 million of corporate bonds. Fair-Value Measurements on a Recurring Basis as of December 31, 2015 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 32 $ — $ — $ 32 Non-U.S. government securities 479 — — 479 Other 10 328 — 338 Total trading account assets 521 328 — 849 AFS Investment securities: U.S. Treasury and federal agencies: Direct obligations 5,206 512 — 5,718 Mortgage-backed securities — 18,165 — 18,165 Asset-backed securities: Student loans — 6,987 189 7,176 Credit cards — 1,341 — 1,341 Sub-prime — 419 — 419 Other (2) — — 1,764 1,764 Total asset-backed securities — 8,747 1,953 10,700 Non-U.S. debt securities: Mortgage-backed securities — 7,071 — 7,071 Asset-backed securities — 3,093 174 3,267 Government securities — 4,355 — 4,355 Other (3) — 4,579 255 4,834 Total non-U.S. debt securities — 19,098 429 19,527 State and political subdivisions — 9,713 33 9,746 Collateralized mortgage obligations — 2,948 39 2,987 Other U.S. debt securities — 2,614 10 2,624 U.S. equity securities — 39 — 39 Non-U.S. equity securities — 3 — 3 U.S. money-market mutual funds — 542 — 542 Non-U.S. money-market mutual funds — 19 — 19 Total investment securities available-for-sale 5,206 62,400 2,464 70,070 Other assets: Derivatives instruments: Foreign exchange contracts — 11,311 5 $ (6,562 ) 4,754 Interest-rate contracts — 135 — (115 ) 20 Other derivative contracts — 5 — (2 ) 3 Total derivative instruments — 11,451 5 (6,679 ) 4,777 Other 2 — — — 2 Total assets carried at fair value $ 5,729 $ 74,179 $ 2,469 $ (6,679 ) $ 75,698 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: U.S. government securities $ 5 $ — $ — $ — $ 5 Non-U.S. government securities 76 — — — 76 Other 5 13 — — 18 Derivative instruments: Foreign exchange contracts — 10,863 5 (6,995 ) 3,873 Interest-rate contracts — 182 — (24 ) 158 Other derivative contracts — 103 — (2 ) 101 Total derivative instruments — 11,148 5 (7,021 ) 4,132 Other 2 — — — 2 Total liabilities carried at fair value $ 88 $ 11,161 $ 5 $ (7,021 ) $ 4,233 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between State Street and the counterparty. Netting also reflects asset and liability reductions of $776 million and $1.12 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2015 , the fair value of other asset-backed securities was primarily composed of $1.76 billion of collateralized loan obligations. (3) As of December 31, 2015 , the fair value of other non-U.S. debt securities was primarily composed of $3.18 billion of covered bonds and $613 million of corporate bonds.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	Fair-Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2015 Fair Value as of December 31, Total Realized and Purchases Sales Settlements Transfers Transfers Fair Value as of Change in (In millions) Recorded Recorded Assets: Investment securities available-for-sale: Asset-backed securities: Student loans $ 259 $ — $ (2 ) $ — $ — $ (6 ) $ — $ (21 ) $ 230 Other 3,780 47 (37 ) — (1,106 ) (741 ) — — 1,943 Total asset-backed securities 4,039 47 (39 ) — (1,106 ) (747 ) — (21 ) 2,173 Non-U.S. debt securities: Mortgage-backed securities — — — 43 — — 97 (140 ) — Asset-backed securities 295 1 (1 ) 168 — (169 ) — (17 ) 277 Other 371 — — 111 — (32 ) — (187 ) 263 Total non-U.S. debt securities 666 1 (1 ) 322 — (201 ) 97 (344 ) 540 State and political subdivisions 38 — (2 ) — — (1 ) — — 35 Collateralized mortgage obligations 614 — (2 ) 293 (88 ) (82 ) — (587 ) 148 Other U.S. debt securities 9 — — — — — — — 9 Total investment securities available-for-sale 5,366 48 (44 ) 615 (1,194 ) (1,031 ) 97 (952 ) 2,905 Other assets: Derivative instruments: Derivative instruments, foreign exchange contracts 81 49 — 17 — (126 ) — — 21 $ — Total derivative instruments 81 49 — 17 — (126 ) — — 21 — Total assets carried at fair value $ 5,447 $ 97 $ (44 ) $ 632 $ (1,194 ) $ (1,157 ) $ 97 $ (952 ) $ 2,926 $ — Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Fair Value as of June 30, Total Realized and Purchases Sales Settlements Transfers out of Level 3 Fair Value as of (1) Change in (In millions) Recorded Recorded Assets: AFS Investment securities: Asset-backed securities: Student loans $ 234 $ — $ (3 ) $ — $ — $ (1 ) $ — $ 230 Other 2,933 22 (19 ) — (686 ) (307 ) — 1,943 Total asset-backed securities 3,167 22 (22 ) — (686 ) (308 ) — 2,173 Non-U.S. debt securities: Mortgage-backed securities 97 — — — — — (97 ) — Asset-backed securities 193 — (1 ) 168 — (83 ) — 277 Other 264 — (1 ) — — — — 263 Total Non-U.S. debt securities 554 — (2 ) 168 — (83 ) (97 ) 540 State and political subdivisions 36 — (1 ) — — — — 35 Collateralized mortgage obligations 215 — (1 ) — (17 ) (49 ) 148 Other U.S. debt securities 9 — — — — — — 9 Total investment securities available-for-sale 3,981 22 (26 ) 168 (686 ) (408 ) (146 ) 2,905 Other assets: Derivative instruments: Foreign exchange contracts 60 (5 ) — 1 — (35 ) — 21 $ — Total derivative instruments 60 (5 ) — 1 — (35 ) — 21 — Total assets carried at fair value $ 4,041 $ 17 $ (26 ) $ 169 $ (686 ) $ (443 ) $ (146 ) $ 2,926 $ — The following tables present activity related to our level-3 financial assets and liabilities during the three and nine months ended September 30, 2016 and 2015 , respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During the three and nine months ended September 30, 2016 and 2015 , transfers out of level 3 were mainly related to certain mortgage- and asset-backed securities, including non-U.S. debt securities, for which fair value was measured using prices for which observable market information became available. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2016 Fair Value as of Total Realized and Purchases Settlements Transfers Fair Value as of September 30, 2016 (1) Change in (In millions) Recorded Recorded Assets: AFS Investment securities: U.S. Treasury and federal agencies, mortgage-backed securities $ 25 $ — $ — $ 25 $ — $ — $ 50 Asset-backed securities: Student loans 190 — 2 — — — 192 Other 1,710 13 (8 ) 118 (560 ) — 1,273 Total asset-backed securities 1,900 13 (6 ) 118 (560 ) — 1,465 Non-U.S. debt securities: Mortgage-backed securities — — — 90 — — 90 Asset-backed securities 111 — — 90 (9 ) (54 ) 138 Other 261 — — 194 3 — 458 Total non-U.S. debt securities 372 — — 374 (6 ) (54 ) 686 State and political subdivisions 33 — 7 — — — 40 Collateralized mortgage obligations 68 — 1 36 (3 ) — 102 Total AFS investment securities 2,398 13 2 553 (569 ) (54 ) 2,343 Total assets carried at fair value $ 2,398 $ 13 $ 2 $ 553 $ (569 ) $ (54 ) $ 2,343 $ — (1) There were no transfers of assets into level 3 during the three months ended September 30, 2016 . Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2016 Fair Value as of Total Realized and Purchases Settlements Transfers out of Level 3 Fair Value as of September 30, 2016 (1) Change in (In millions) Recorded in Revenue Recorded in Other Comprehensive Income Assets: AFS Investment securities: U.S. Treasury and federal agencies, mortgage-backed securities $ — $ — $ — $ 325 $ — $ (275 ) $ 50 Asset-backed securities: Student loans 189 1 2 — — — 192 Other 1,764 29 (21 ) 250 (749 ) — 1,273 Total asset-backed securities 1,953 30 (19 ) 250 (749 ) — 1,465 Non-U.S. debt securities: Mortgage-backed securities — — — 90 — — 90 Asset-backed securities 174 — (1 ) 196 (43 ) (188 ) 138 Other 255 — — 223 9 (29 ) 458 Total Non-U.S. debt securities 429 — (1 ) 509 (34 ) (217 ) 686 State and political subdivisions 33 — 9 — (2 ) — 40 Collateralized mortgage obligations 39 — 2 86 (25 ) — 102 Other U.S. debt securities 10 — — — (10 ) — — Total AFS investment securities 2,464 30 (9 ) 1,170 (820 ) (492 ) 2,343 Other assets: Derivative instruments: Foreign exchange contracts 5 3 — — (8 ) — — $ — Total derivative instruments 5 3 — — (8 ) — — — Total assets carried at fair value $ 2,469 $ 33 $ (9 ) $ 1,170 $ (828 ) $ (492 ) $ 2,343 $ —
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2016 Fair Value as of Total Realized and Settlements Fair Value as of (2) Change in (In millions) Recorded in Revenue Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 5 $ 5 $ (10 ) $ — $ — Total derivative instruments 5 5 (10 ) — — Total liabilities carried at fair value $ 5 $ 5 $ (10 ) $ — $ — (1) There were no transfers of assets into level 3 during the nine months ended September 30, 2016 . (2) There were no transfers of liabilities into or out of level 3 during the nine months ended September 30, 2016 . Fair-Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2015 Fair Value as of December 31, Total Realized and Issuances Settlements Fair Value as of (1) Change in (In millions) Recorded Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 74 $ 24 $ 19 $ (95 ) $ 22 $ (2 ) Other 9 — — (9 ) — — Total derivative instruments 83 24 19 (104 ) 22 (2 ) Total liabilities carried at fair value $ 83 $ 24 $ 19 $ (104 ) $ 22 $ (2 ) (1) There were no transfers of liabilities into or out of level 3 during the nine months ended September 30, 2015 . Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Fair Value as of June 30, Total Realized and Issuances Settlements Fair Value as of (2) Change in (In millions) Recorded Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 50 $ (3 ) $ 1 $ (26 ) $ 22 $ 1 Total derivative instruments 50 (3 ) 1 (26 ) 22 1 Total liabilities carried at fair value $ 50 $ (3 ) $ 1 $ (26 ) $ 22 $ 1 (1) There were no transfers of assets into level 3 during the three months ended September 30, 2015 . (2) There were no transfers of liabilities into or out of level 3 during the three months ended September 30, 2015 .
Level 3 Total Realized And Unrealized Gains And Losses Recorded In Revenue	The following table presents total realized and unrealized gains and losses for our level-3 financial assets and liabilities and where they are presented in our consolidated statement of income for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, Total Realized and Change in Total Realized and Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of September 30, (In millions) 2016 2015 2016 2015 2016 2015 2016 2015 Fee revenue: Trading services $ — $ (1 ) $ — $ (1 ) $ (2 ) $ 25 $ — $ 2 Total fee revenue — (1 ) — (1 ) (2 ) 25 — 2 Net interest revenue 13 21 — — 30 48 — — Total revenue $ 13 $ 20 $ — $ (1 ) $ 28 $ 73 $ — $ 2
Fair Value Inputs, Assets, Quantitative Information	The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level-3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level-3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker or dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level-3 Fair-Value Measurements Fair Value Weighted-Average (Dollars in millions, except where otherwise noted) As of September 30, 2016 As of December 31, 2015 Valuation Technique Significant (1) As of September 30, 2016 As of December 31, 2015 Significant unobservable inputs readily available to State Street: Assets: Asset-backed securities, other $ 14 $ 28 Discounted cash flows Credit spread 0.7 % (0.1 )% State and political subdivisions 40 33 Discounted cash flows Credit spread 2.0 2.2 Derivative instruments, foreign exchange contracts — 5 Option model Volatility — 9.3 Total $ 54 $ 66 Liabilities: Derivative instruments, foreign exchange contracts $ — $ 5 Option model Volatility — 9.2 Total $ — $ 5 (1) Significant chan ges in these unobservable inputs would result in significant changes in fair value measure.
Fair Value Inputs, Liabilities, Quantitative Information	The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level-3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level-3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker or dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level-3 Fair-Value Measurements Fair Value Weighted-Average (Dollars in millions, except where otherwise noted) As of September 30, 2016 As of December 31, 2015 Valuation Technique Significant (1) As of September 30, 2016 As of December 31, 2015 Significant unobservable inputs readily available to State Street: Assets: Asset-backed securities, other $ 14 $ 28 Discounted cash flows Credit spread 0.7 % (0.1 )% State and political subdivisions 40 33 Discounted cash flows Credit spread 2.0 2.2 Derivative instruments, foreign exchange contracts — 5 Option model Volatility — 9.3 Total $ 54 $ 66 Liabilities: Derivative instruments, foreign exchange contracts $ — $ 5 Option model Volatility — 9.2 Total $ — $ 5 (1) Significant chan ges in these unobservable inputs would result in significant changes in fair value measure.
Schedule of Availability of Significant Unobservable Inputs by Balance Sheet Classification	(1) Significant chan ges in these unobservable inputs would result in significant changes in fair value measure. The following tables present information with respect to the composition of our level-3 financial assets and liabilities, by availability of significant unobservable inputs, as of the dates indicated: September 30, 2016 Significant Unobservable Inputs Readily Available to State Street (1) Significant Unobservable Inputs Not Developed by State Street and Not Readily Available (2) Total Assets and Liabilities with Significant Unobservable Inputs (In millions) Assets: U.S. Treasury and federal agencies, mortgage-backed securities $ — $ 50 $ 50 Asset-backed securities, student loans — 192 192 Asset-backed securities, other 14 1,259 1,273 Non-U.S. debt securities, mortgage-backed securities — 90 90 Non-U.S. debt securities, asset-backed securities — 138 138 Non-U.S. debt securities, other — 458 458 State and political subdivisions 40 — 40 Collateralized mortgage obligations — 102 102 Total $ 54 $ 2,289 $ 2,343 (1) Information with respect to these model-priced financial assets are provided in a separate table. (2) Fair value for these financial assets is measured using non-binding broker or dealer quotes. December 31, 2015 Significant Unobservable Inputs Readily Available to State Street (1) Significant Unobservable Inputs Not Developed by State Street and Not Readily Available (2) Total Assets and Liabilities with Significant Unobservable Inputs (In millions) Assets: Asset-backed securities, student loans $ — $ 189 $ 189 Asset-backed securities, other 28 1,736 1,764 Non-U.S. debt securities, asset-backed securities — 174 174 Non-U.S. debt securities, other — 255 255 State and political subdivisions 33 — 33 Collateralized mortgage obligations — 39 39 Other U.S. debt securities — 10 10 Derivative instruments, foreign exchange contracts 5 — 5 Total $ 66 $ 2,403 $ 2,469 Liabilities: Derivative instruments, foreign exchange contracts $ 5 $ — $ 5 Total $ 5 $ — $ 5 (1) Information with respect to these model-priced fina ncial assets and liabilities is provided in a separate table. (2) Fair value for these financial assets is measured using non-binding broker or dealer quotes.
Carrying Value and Estimated Fair Value of Financial Instruments by Fair Value Hierarchy	The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value on a recurring basis, as they would be categorized within the fair-value hierarchy, as of the dates indicated. Fair-Value Hierarchy September 30, 2016 Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) (In millions) Financial Assets: Cash and due from banks $ 3,490 $ 3,490 $ 3,490 $ — $ — Interest-bearing deposits with banks 79,090 79,090 — 79,090 — Securities purchased under resale agreements 2,442 2,442 — 2,442 — Investment securities held-to-maturity 28,368 28,780 17,795 10,910 75 Net loans (excluding leases) (1) 20,605 20,610 — 20,509 101 Financial Liabilities: Deposits: Noninterest-bearing $ 60,545 $ 60,545 $ — $ 60,545 $ — Interest-bearing - U.S. 33,767 33,767 — 33,767 — Interest-bearing - non-U.S. 104,454 104,454 — 104,454 — Securities sold under repurchase agreements 4,364 4,364 — 4,364 — Federal funds purchased 28 28 — 28 — Other short-term borrowings 1,385 1,385 — 1,385 — Long-term debt 11,834 12,015 — 11,657 358 (1) Includes $14 million of loans classified as held-for-sale that were measured at fair value on a non-recurring basis as of September 30, 2016 . Fair-Value Hierarchy December 31, 2015 Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) (In millions) Financial Assets: Cash and due from banks $ 1,207 $ 1,207 $ 1,207 $ — $ — Interest-bearing deposits with banks 75,338 75,338 — 75,338 — Securities purchased under resale agreements 3,404 3,404 — 3,404 — Investment securities held-to-maturity 29,952 29,798 — 29,798 — Net loans (excluding leases) (1) 17,838 17,792 — 17,667 125 Financial Liabilities: Deposits: Noninterest-bearing $ 65,800 $ 65,800 $ — $ 65,800 $ — Interest-bearing - U.S. 29,958 29,958 — 29,958 — Interest-bearing - non-U.S. 95,869 95,869 — 95,869 — Securities sold under repurchase agreements 4,499 4,499 — 4,499 — Federal funds purchased 6 6 — 6 — Other short-term borrowings 1,748 1,748 — 1,748 — Long-term debt 11,497 11,604 — 11,215 389 (1) Includes $14 million of loans classified as held-for-sale that were measured at fair value on a non-recurring basis as of December 31, 2015 .

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of Marketable Securities	The following table presents the amortized cost and fair value, and associated unrealized gains and losses, of investment securities as of the dates indicated: September 30, 2016 December 31, 2015 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 5,283 $ 20 $ 1 $ 5,302 $ 5,717 $ 6 $ 5 $ 5,718 Mortgage-backed securities 17,796 224 25 17,995 18,168 131 134 18,165 Asset-backed securities: Student loans (1) 7,451 19 163 7,307 7,358 16 198 7,176 Credit cards 1,388 12 25 1,375 1,378 — 37 1,341 Sub-prime 376 2 24 354 448 2 31 419 Other (2) 1,257 16 — 1,273 1,724 43 3 1,764 Total asset-backed securities 10,472 49 212 10,309 10,908 61 269 10,700 Non-U.S. debt securities: Mortgage-backed securities 7,122 48 9 7,161 7,010 72 11 7,071 Asset-backed securities 2,528 4 3 2,529 3,272 2 7 3,267 Government securities 5,967 17 — 5,984 4,348 7 — 4,355 Other (3) 5,876 44 1 5,919 4,817 29 12 4,834 Total non-U.S. debt securities 21,493 113 13 21,593 19,447 110 30 19,527 State and political subdivisions 10,274 505 23 10,756 9,402 371 27 9,746 Collateralized mortgage obligations 2,752 62 8 2,806 2,993 16 22 2,987 Other U.S. debt securities 2,306 39 7 2,338 2,611 31 18 2,624 U.S. equity securities 39 4 2 41 33 9 3 39 Non-U.S. equity securities 3 — — 3 3 — — 3 U.S. money-market mutual funds 361 — — 361 542 — — 542 Non-U.S. money-market mutual funds 16 — — 16 19 — — 19 Total $ 70,795 $ 1,016 $ 291 $ 71,520 $ 69,843 $ 735 $ 508 $ 70,070 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 17,553 $ 333 $ 1 $ 17,885 $ 20,878 $ 2 $ 217 $ 20,663 Mortgage-backed securities 4,280 20 3 4,297 610 2 8 604 Asset-backed securities: Student loans (1) 1,440 — 40 1,400 1,592 — 47 1,545 Credit cards 897 3 — 900 897 — 1 896 Other 76 — — 76 366 2 1 367 Total asset-backed securities 2,413 3 40 2,376 2,855 2 49 2,808 Non-U.S. debt securities: Mortgage-backed securities 1,581 84 17 1,648 2,202 109 26 2,285 Asset-backed securities 697 — 1 696 1,415 4 3 1,416 Government securities 288 3 — 291 239 — 1 238 Other 119 2 — 121 65 — — 65 Total non-U.S. debt securities 2,685 89 18 2,756 3,921 113 30 4,004 State and political subdivisions — — — — 1 — — 1 Collateralized mortgage obligations 1,437 42 13 1,466 1,687 60 29 1,718 Total $ 28,368 $ 487 $ 75 $ 28,780 $ 29,952 $ 179 $ 333 $ 29,798 (1) Primarily composed of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (2) As of September 30, 2016 and December 31, 2015 , the fair value of other ABS was primarily composed of $1.27 billion and $1.76 billion , respectively, of collateralized loan obligations. (3) As of September 30, 2016 and December 31, 2015 , the fair value of other non-U.S. debt securities was primarily composed of $3.98 billion and $3.18 billion , respectively, of covered bonds and $981 million and $613 million , as of September 30, 2016 and December 31, 2015 , respectively, of corporate bonds.
Schedule of Gross Pre-tax Unrealized Losses on Investment Securities	The following tables present the aggregate fair values of investment securities that have been in a continuous unrealized loss position for less than 12 months , and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: Less than 12 months 12 months or longer Total September 30, 2016 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 35 $ — $ 177 $ 1 $ 212 $ 1 Mortgage-backed securities 3,116 12 858 13 3,974 25 Asset-backed securities: Student loans 520 3 4,990 160 5,510 163 Credit cards — — 505 25 505 25 Sub-prime 3 — 330 24 333 24 Other 150 — 150 — 300 — Total asset-backed securities 673 3 5,975 209 6,648 212 Non-U.S. debt securities: Mortgage-backed securities 368 1 1,137 8 1,505 9 Asset-backed securities 333 1 463 2 796 3 Government securities 2,044 — — — 2,044 — Other 569 1 363 — 932 1 Total non-U.S. debt securities 3,314 3 1,963 10 5,277 13 State and political subdivisions 714 9 508 14 1,222 23 Collateralized mortgage obligations 397 3 219 5 616 8 Other U.S. debt securities 133 — 157 7 290 7 U.S. equity securities — — 5 2 5 2 Non-U.S. equity securities — — 1 — 1 — Total $ 8,382 $ 30 $ 9,863 $ 261 $ 18,245 $ 291 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ — $ — $ 90 $ 1 $ 90 $ 1 Mortgage-backed securities 936 3 — — 936 3 Asset-backed securities: Student loans 452 12 922 28 1,374 40 Other — — 15 — 15 — Total asset-backed securities 452 12 937 28 1,389 40 Non-U.S. mortgage-backed securities: Mortgage-backed securities 104 3 406 14 510 17 Asset-backed securities 8 — 271 1 279 1 Government securities 174 — — — 174 — Total non-U.S. debt securities 286 3 677 15 963 18 Collateralized mortgage obligations 521 4 196 9 717 13 Total $ 2,195 $ 22 $ 1,900 $ 53 $ 4,095 $ 75 Less than 12 months 12 months or longer Total December 31, 2015 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,123 $ 4 $ 121 $ 1 $ 3,244 $ 5 Mortgage-backed securities 5,729 48 3,166 86 8,895 134 Asset-backed securities: Student loans 2,841 54 3,217 144 6,058 198 Credit cards 838 7 490 30 1,328 37 Sub-prime 7 — 387 31 394 31 Other 720 3 43 — 763 3 Total asset-backed securities 4,406 64 4,137 205 8,543 269 Non-U.S. debt securities: Mortgage-backed securities 1,457 7 437 4 1,894 11 Asset-backed securities 2,190 7 22 — 2,212 7 Government securities 1,691 — — — 1,691 — Other 1,548 5 527 7 2,075 12 Total non-U.S. debt securities 6,886 19 986 11 7,872 30 State and political subdivisions 206 1 658 26 864 27 Collateralized mortgage obligations 1,511 14 217 8 1,728 22 Other U.S. debt securities 475 9 178 9 653 18 U.S. equity securities — — 5 3 5 3 Total $ 22,336 $ 159 $ 9,468 $ 349 $ 31,804 $ 508 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 16,370 $ 120 $ 3,005 $ 97 $ 19,375 $ 217 Mortgage-backed securities 560 8 — — 560 8 Asset-backed securities: Student loans 896 25 615 22 1,511 47 Credit cards 636 1 — — 636 1 Other 102 — 31 1 133 1 Total asset-backed securities 1,634 26 646 23 2,280 49 Non-U.S. debt securities: Mortgage-backed securities 338 2 524 24 862 26 Asset-backed securities 1,015 3 69 — 1,084 3 Government securities 128 1 — — 128 1 Other — — 43 — 43 — Total non-U.S. debt securities 1,481 6 636 24 2,117 30 Collateralized mortgage obligations 634 9 537 20 1,171 29 Total $ 20,679 $ 169 $ 4,824 $ 164 $ 25,503 $ 333
Investments Classified by Contractual Maturity Date	The following table presents contractual maturities of debt investment securities by carrying amount as of September 30, 2016 . The maturities of certain asset-backed securities, mortgage-backed securities, and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. September 30, 2016 Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total (In millions) Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,504 $ 1,250 $ 146 $ 402 $ 5,302 Mortgage-backed securities 61 1,940 4,343 11,651 17,995 Asset-backed securities: Student loans 894 3,376 1,132 1,905 7,307 Credit cards 4 1,068 303 — 1,375 Sub-prime 3 2 2 347 354 Other 3 84 1,036 150 1,273 Total asset-backed securities 904 4,530 2,473 2,402 10,309 Non-U.S. debt securities: Mortgage-backed securities 1,239 3,734 850 1,338 7,161 Asset-backed securities 80 2,214 229 6 2,529 Government securities 4,453 1,319 212 — 5,984 Other 1,818 3,710 391 — 5,919 Total non-U.S. debt securities 7,590 10,977 1,682 1,344 21,593 State and political subdivisions 460 2,387 5,730 2,179 10,756 Collateralized mortgage obligations 16 55 842 1,893 2,806 Other U.S. debt securities 601 1,074 616 47 2,338 Total $ 13,136 $ 22,213 $ 15,832 $ 19,918 $ 71,099 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ — $ 14,732 $ 2,745 $ 76 $ 17,553 Mortgage-backed securities 1 8 167 4,104 4,280 Asset-backed securities: Student loans 89 175 230 946 1,440 Credit cards 98 799 — — 897 Other 13 26 34 3 76 Total asset-backed securities 200 1,000 264 949 2,413 Non-U.S. debt securities: Mortgage-backed securities 368 387 74 752 1,581 Asset-backed securities 145 546 6 — 697 Government securities 175 113 — — 288 Other 74 45 — — 119 Total non-U.S. debt securities 762 1,091 80 752 2,685 Collateralized mortgage obligations 103 25 299 1,010 1,437 Total $ 1,066 $ 16,856 $ 3,555 $ 6,891 $ 28,368
Schedule of Credit-Related Loss Activity Recognized in Earnings	The following table presents a roll-forward with respect to net impairment losses that have been recognized in income for the periods indicated. Nine Months Ended September 30, (In millions) 2016 2015 Balance, beginning of period $ 92 $ 115 Additions: Losses for which OTTI was previously recognized 2 1 Deductions: Previously recognized losses related to securities sold or matured (26 ) (22 ) Balance, end of period $ 68 $ 94

Loans and Leases (Tables)

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Net Loans	The following table presents our recorded investment in loans and leases, by segment and class, as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Institutional: Investment funds: U.S. $ 13,647 $ 11,136 Non-U.S. 3,092 1,678 Commercial and financial: U.S. 3,540 4,671 Non-U.S. 275 278 Purchased receivables: U.S. 74 93 Non-U.S. — — Lease financing: U.S. 337 337 Non-U.S. 510 578 Total institutional 21,475 18,771 Commercial real estate: U.S. 27 28 Total loans and leases 21,502 18,799 Allowance for loan and lease losses (51 ) (46 ) Loans and leases, net of allowance for loan and lease losses $ 21,451 $ 18,753
Recorded Investment in Each Class of Total Loans and Leases by Credit Quality Indicator	The following tables present our recorded investment in each class of loans and leases by credit quality indicator as of the dates indicated: Institutional September 30, 2016 Investment Funds Commercial and Financial Purchased Receivables Lease Financing Commercial Real Estate Total Loans and Leases (In millions) Investment grade (1) $ 15,828 $ 422 $ 74 $ 847 $ 27 $ 17,198 Speculative (2) 908 3,378 — — — 4,286 Special mention (3) 3 — — — — 3 Substandard (4) — 15 — — — 15 Total $ 16,739 $ 3,815 $ 74 $ 847 $ 27 $ 21,502 Institutional December 31, 2015 Investment Funds Commercial and Financial Purchased Receivables Lease Financing Commercial Real Estate Total Loans and Leases (In millions) Investment grade (1) $ 12,415 $ 1,780 $ 93 $ 888 $ 28 $ 15,204 Speculative (2) 399 3,138 — 27 — 3,564 Special mention (3) — 31 — — — 31 Total $ 12,814 $ 4,949 $ 93 $ 915 $ 28 $ 18,799 (1) Investment-grade loans and leases consist of counterparties with strong credit quality and low expected credit risk and probability of default. Ratings apply to counterparties with a strong capacity to support the timely repayment of any financial commitment. (2) Speculative loans and leases consist of counterparties that face ongoing uncertainties or exposure to business, financial, or economic downturns. However, these counterparties may have financial flexibility or access to financial alternatives, which allow for financial commitments to be met. (3) Special mention loans and leases consist of counterparties with potential weaknesses that, if uncorrected, may result in deterioration of repayment prospects. (4) Substandard loans and leases consist of counterparties with well-defined weakness that jeopardizes repayment with the possibility we will sustain some loss.
Schedule of Loans and Leases Receivable by Impairment Methodology	The following table presents our recorded investment in loans and leases, disaggregated based on our impairment methodology, as of the dates indicated: September 30, 2016 December 31, 2015 (In millions) Institutional Commercial Real Estate Total Loans and Leases Institutional Commercial Real Estate Total Loans and Leases Loans and leases (1) : Collectively evaluated for impairment $ 21,475 $ 27 $ 21,502 $ 18,771 $ 28 $ 18,799 Total $ 21,475 $ 27 $ 21,502 $ 18,771 $ 28 $ 18,799 (1) For those portfolios where there are a small number of loans each with a large balance, we review each loan annually for indicators of impairment. For those loans where no such indicators are identified, the loans are collectively evaluated for impairment. As of September 30, 2016 and December 31, 2015 , zero of the allowance for loan and lease loss related to institutional loans individually evaluated for impairment. As of September 30, 2016 and December 31, 2015 , all of the allowance for loan and lease loss related to institutional loans collectively evaluated for impairment.
Impaired Loans	The following table presents information related to our recorded investment in impaired loans and leases for the dates or periods indicated: As of September 30, 2016 As of December 31, 2015 (In millions) Recorded Investment Unpaid Principal Balance (1) Recorded Investment Unpaid Principal Balance With no related allowance recorded: CRE—property development—acquired credit-impaired $ — $ 34 $ — $ 34 CRE—other—acquired credit-impaired — 22 — 22 Total CRE $ — $ 56 $ — $ 56 (1) As of September 30, 2016 and December 31, 2015 , all of the allowance for loan and lease losses of $51 million and $46 million , respectively, related to loans that were not impaired.
Schedule of Activity in the Allowance for Loan Losses	The following table presents activity in the allowance for loan and lease losses for the periods indicated: Three Months Ended September 30, 2016 2015 (In millions) Total Loans and Leases Total Loans and Leases Allowance for loan and lease losses (1) : Beginning balance $ 51 $ 43 Provision for loan losses — 5 Charge-offs — — Ending balance $ 51 $ 48 Nine Months Ended September 30, 2016 2015 (In millions) Total Loans and Leases Total Loans and Leases Allowance for loan and lease losses (1) : Beginning balance $ 46 $ 37 Provision for loan losses 8 11 Charge-offs (3 ) — Ending balance $ 51 $ 48 (1) As of September 30, 2016 , approximately $43 million of our allowance for loan and lease losses was related to senior secured loans included in the institutional segment; the remaining $8 million was related to other institutional segment loans.

Goodwill and Other Intangible33

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Changes In The Carrying Amount Of Goodwill	The following table presents changes in the carrying amount of goodwill during the periods indicated: September 30, 2016 December 31, 2015 (In millions) Investment Servicing Investment Management Total Investment Servicing Investment Management Total Goodwill: Beginning balance $ 5,641 $ 30 $ 5,671 $ 5,793 $ 33 $ 5,826 Acquisitions (1) — 236 236 — — — Divestitures and other reductions (11 ) — (11 ) — — — Foreign currency translation 15 — 15 (152 ) (3 ) (155 ) Ending balance $ 5,645 $ 266 $ 5,911 $ 5,641 $ 30 $ 5,671 (1) Amounts for 2016 reflect our acquisition of GEAM, which is more fully described in Note 1.
Schedule of Finite-Lived Intangible Assets	The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: September 30, 2016 December 31, 2015 (In millions) Investment Servicing Investment Management Total Investment Servicing Investment Management Total Other intangible assets: Beginning balance $ 1,753 $ 15 $ 1,768 $ 1,998 $ 27 $ 2,025 Acquisitions (1) — 217 217 16 — 16 Amortization (141 ) (12 ) (153 ) (187 ) (10 ) (197 ) Foreign currency translation and other, net 17 — 17 (74 ) (2 ) (76 ) Ending balance $ 1,629 $ 220 $ 1,849 $ 1,753 $ 15 $ 1,768 (1) Amounts for 2016 reflect our acquisition of GEAM, which is more fully described in Note 1. The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: September 30, 2016 December 31, 2015 (In millions) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Client relationships $ 2,703 $ (1,312 ) $ 1,391 $ 2,486 $ (1,198 ) $ 1,288 Core deposits 673 (273 ) 400 667 (246 ) 421 Other 158 (100 ) 58 147 (88 ) 59 Total $ 3,534 $ (1,685 ) $ 1,849 $ 3,300 $ (1,532 ) $ 1,768

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Other Assets [Abstract]
Components of Other Assets	The following table presents the components of other assets as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Collateral deposits, net $ 24,458 $ 21,465 Derivative instruments, net 3,503 4,777 Bank-owned life insurance 3,137 3,078 Investments in joint ventures and other unconsolidated entities 2,235 2,034 Receivable for securities settlement 598 311 Accounts receivable 454 1,018 Prepaid expenses 363 284 Income taxes receivable 219 154 Deferred tax assets, net of valuation allowance 215 182 Deposits with clearing organizations 138 127 Other (1) 1,000 473 Total $ 36,320 $ 33,903 (1) Includes amounts held in escrow accounts at third parties related to the negotiated settlements in the indirect foreign exchange legal matter (see Note 10).

Derivative Financial Instrume35

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The table below summarizes the maturities and the paid fixed interest rates for the hedged senior and subordinated notes: September 30, 2016 Maturity Paid Fixed Interest Rate Senior Notes 2018 1.35% 2020 2.55 2021 1.95 2021 4.38 2023 3.70 2024 3.30 2025 3.55 2026 2.65 Subordinated Notes 2018 4.96 2023 3.10
Schedule of Outstanding Hedges: (Notional Amount)	The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments entered into in connection with our trading and asset-and-liability management activities as of the dates indicated: (In millions) September 30, December 31, Derivatives not designated as hedging instruments: Interest-rate contracts: Swap agreements and forwards $ — $ 336 Futures 6,492 2,621 Foreign exchange contracts: Forward, swap and spot 1,313,515 1,274,277 Options purchased 131 403 Options written 24 404 Futures 37 — Credit derivative contracts: Credit swap agreements (1) — 141 Commodity and equity contracts: Commodity (1) 142 113 Equity (1) 76 87 Other: Stable value contracts 27,319 24,583 Deferred value awards (2) 456 320 Derivatives designated as hedging instruments: Interest-rate contracts: Swap agreements 10,276 9,398 Foreign exchange contracts: Forward and swap 4,812 4,515 (1) Primarily composed of positions held by a consolidated sponsored investment fund, more fully described in Note 11 . (2) Represents grants of deferred value awards to employees; refer to Note 12 in the 2015 Form 10-K , "Derivatives Not Designated as Hedging Instruments" for additional information.
Notional Amount of Interest Rate Swap Agreements Designated as Fair Value and Cash Flow Hedges	The following tables present the aggregate notional amounts of these interest-rate contracts and the related assets or liabilities being hedged as of the dates indicated: September 30, 2016 (1) (In millions) Fair Value Hedges Investment securities available-for-sale $ 1,551 Long-term debt (2) 8,725 Total $ 10,276 December 31, 2015 (1) (In millions) Fair Value Hedges Investment securities available-for-sale $ 1,698 Long-term debt (2) 7,700 Total $ 9,398 (1) As of September 30, 2016 and December 31, 2015 , there were no interest-rate contracts designated as cash flow hedges. (2) As of September 30, 2016 , these fair value hedges increased the carrying value of long-term debt presented in our consolidated statement of condition by $376 million . As of December 31, 2015 , these fair value hedges increased the carrying value of long-term debt presented in our consolidated statement of condition by $105 million .
Contractual and Weighted-Average Interest Rates, Which Include the Effects of Hedges Related to Financial Instruments	The following table presents the contractual and weighted-average interest rates for long-term debt, which include the effects of the fair value hedges presented in the table above, for the periods indicated: Three Months Ended September 30, 2016 2015 Contractual Rates Rate Including Impact of Hedges Contractual Rates Rate Including Impact of Hedges Long-term debt 3.37 % 2.27 % 3.59 % 2.35 % Nine Months Ended September 30, 2016 2015 Contractual Rate Contractual Rate Long-term debt 3.41 % 2.24 % 3.60 % 2.51 %
Schedule of the Fair Values of Derivative Financial Instruments	The following tables present the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is disclosed in Note 8 . Derivative Assets (1) Fair Value (In millions) September 30, 2016 December 31, 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 7,838 $ 10,799 Interest-rate contracts — 2 Other derivative contracts 3 5 Total $ 7,841 $ 10,806 Derivatives designated as hedging instruments: Foreign exchange contracts $ 299 $ 517 Interest-rate contracts 239 133 Total $ 538 $ 650 (1) Derivative assets are included within other assets in our consolidated statement of condition. Derivative Liabilities (1) Fair Value (In millions) September 30, 2016 December 31, 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 7,753 $ 10,795 Other derivative contracts 150 103 Interest-rate contracts — 2 Total $ 7,903 $ 10,900 Derivatives designated as hedging instruments: Foreign exchange contracts $ 148 $ 73 Interest-rate contracts 189 180 Total $ 337 $ 253 (1) Derivative liabilities are included within other liabilities in our consolidated statement of condition.
Impact of Derivatives on Consolidated Statement of Income	The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Foreign exchange contracts Trading services revenue $ 161 $ 177 $ 477 $ 546 Interest-rate contracts Processing fees and other revenue — — 1 — Interest-rate contracts Trading services revenue (1 ) — (6 ) (1 ) Credit derivative contracts Trading services revenue — — (1 ) Other derivative contracts Trading services revenue 1 (1 ) (2 ) 1 Total $ 161 $ 176 $ 469 $ 546 Location of (Gain) Loss on Derivative in Consolidated Statement of Income Amount of (Gain) Loss on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives not designated as hedging instruments: Other derivative contracts Compensation and employee benefits $ 41 $ 28 $ 168 $ 121 Total $ 41 $ 28 $ 168 $ 121
Schedule of Differences Between the Gains (Losses) on the Derivative and the Gains (Losses) on the Hedged Item	Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income Three Months Ended September 30, Three Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives designated as fair value hedges: Foreign exchange contracts Processing fees and $ 24 $ (80 ) Investment securities Processing fees and $ (24 ) $ 80 Foreign exchange contracts Processing fees and other revenue 1 (13 ) FX deposit Processing fees and other revenue (1 ) 13 Interest-rate contracts Processing fees and other revenue 22 (25 ) Available-for-sale securities Processing fees and other revenue (1) (22 ) 26 Interest-rate contracts Processing fees and (79 ) 182 Long-term debt Processing fees and 78 (176 ) Total $ (32 ) $ 64 $ 31 $ (57 ) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income Nine Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Derivatives designated as fair value hedges: Foreign exchange contracts Processing fees and $ 43 $ (132 ) Investment securities Processing fees and $ (43 ) $ 132 Foreign exchange contracts Processing fees and other revenue 247 102 FX deposit Processing fees and other revenue (247 ) (102 ) Interest-rate contracts Processing fees and other revenue (15 ) (13 ) Available-for-sale securities Processing fees and other revenue (2) 15 14 Interest-rate contracts Processing fees and 297 165 Long-term debt Processing fees and (282 ) (159 ) Total $ 572 $ 122 $ (557 ) $ (115 ) (1) For the three months ended September 30, 2016 and 2015 , $13 million and $16 million , respectively, of unrealized gains and unrealized losses, respectively, on AFS investment securities designated in fair value hedges was recognized in OCI. (2) For the nine months ended September 30, 2016 and 2015 , $9 million and $9 million , respectively, of unrealized losses on AFS investment securities designated in fair value hedges was recognized in OCI. Differences between the gains (losses) on the derivative and the gains (losses) on the hedged item, excluding any amounts recorded in net interest revenue, represent hedge ineffectiveness. Amount of Gain (Loss) on Derivative Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Amount of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Location of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, (In millions) 2016 2015 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Interest-rate contracts $ — $ — Net interest revenue $ — $ (1 ) Net interest revenue $ — $ — Foreign exchange contracts (1 ) 40 Net interest revenue — — Net interest revenue 6 2 Total $ (1 ) $ 40 $ — $ (1 ) $ 6 $ 2 Derivatives designated as net investment hedges: Foreign exchange contracts $ 4 $ — Gains (Losses) related to investment securities, net $ — $ — Gains (Losses) related to investment securities, net $ — $ — Total $ 4 $ — $ — $ — $ — $ — Amount of Gain (Loss) on Derivative Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Amount of Gain (Loss) Reclassified from OCI to Consolidated Statement of Income Location of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Nine Months Ended September 30, Nine Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Interest-rate contracts $ — $ — Net interest revenue $ — $ (3 ) Net interest revenue $ — $ — Foreign exchange contracts (293 ) 81 Net interest revenue — — Net interest revenue 17 6 Total $ (293 ) $ 81 $ — $ (3 ) $ 17 $ 6 Derivatives designated as net investment hedges: Foreign exchange contracts $ 55 $ — Gains (Losses) related to investment securities, net $ — $ — Gains (Losses) related to investment securities, net $ — $ — Total $ 55 $ — $ — $ — $ — $ —

Offsetting Arrangements (Tables

Offsetting Arrangements (Tables)	9 Months Ended
	Sep. 30, 2016
Offsetting [Abstract]
Offsetting Assets	The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: September 30, 2016 December 31, 2015 (In millions) Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts of Recognized Assets (1) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Derivatives: Foreign exchange contracts $ 8,137 $ (3,936 ) $ 4,201 $ 11,316 $ (5,896 ) $ 5,420 Interest-rate contracts 239 (8 ) 231 135 (5 ) 130 Other derivative contracts 3 (3 ) — 5 (2 ) 3 Cash collateral netting NA (929 ) (929 ) N/A (776 ) (776 ) Total derivatives $ 8,379 $ (4,876 ) $ 3,503 $ 11,456 $ (6,679 ) $ 4,777 Other financial instruments: Resale agreements and securities borrowing (4) $ 62,733 $ (36,580 ) $ 26,153 $ 62,522 $ (38,997 ) $ 23,525 Total derivatives and other financial instruments $ 71,112 $ (41,456 ) $ 29,656 $ 73,978 $ (45,676 ) $ 28,302 NA: Not applicable. (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Derivative amounts are carried at fair value and securities financing amounts are carried at amortized cost, except for securities collateral which are also carried at fair value. Refer to Note 1 to the consolidated financial statements on pages 129 to 132 in our 2015 Form 10-K for additional information on the measurement basis of these instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Included in the $26,153 million as of September 30, 2016 were $2,442 million of resale agreements and $23,711 million of collateral provided related to securities borrowing. Included in the $23,525 million as of December 31, 2015 were $3,404 million of resale agreements and $20,121 million of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. September 30, 2016 December 31, 2015 Gross Amounts Not Offset in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Net Amount of Assets Presented in Statement of Condition Counterparty Netting Cash and Securities Received (1) Net Amount (2) Net Amount of Assets Presented in Statement of Condition Counterparty Netting Cash and Securities Received (1) Net Amount (2) Derivatives $ 3,503 $ — $ (159 ) $ 3,344 $ 4,777 $ — $ (405 ) $ 4,372 Resale agreements and securities borrowing 26,153 (120 ) (25,783 ) 250 23,525 (63 ) (22,812 ) 650 Total $ 29,656 $ (120 ) $ (25,942 ) $ 3,594 $ 28,302 $ (63 ) $ (23,217 ) $ 5,022 ( 1) Includes securities in connection with our securities borrowing transactions. (2) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements.
Offsetting Liabilities	The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: September 30, 2016 December 31, 2015 (In millions) Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts of Recognized Liabilities (1) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Derivatives: Foreign exchange contracts $ 7,901 $ (3,936 ) $ 3,965 $ 10,868 $ (5,896 ) $ 4,972 Interest-rate contracts 189 (8 ) 181 182 (5 ) 177 Other derivative contracts 150 (3 ) 147 103 (2 ) 101 Cash collateral netting NA (731 ) (731 ) N/A (1,118 ) (1,118 ) Total derivatives $ 8,240 $ (4,678 ) $ 3,562 $ 11,153 $ (7,021 ) $ 4,132 Other financial instruments: Repurchase agreements and securities lending (4) $ 46,363 $ (36,580 ) $ 9,783 $ 46,766 $ (38,997 ) $ 7,769 Total derivatives and other financial instruments $ 54,603 $ (41,258 ) $ 13,345 $ 57,919 $ (46,018 ) $ 11,901 NA: Not applicable. (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Derivative amounts are carried at fair value and securities financing amounts are carried at amortized cost, except for securities collateral which are also carried at fair value. Refer to Note 1 to the consolidated financial statements on pages 129 to 132 in our 2015 Form 10-K for additional information on the measurement basis of these instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Included in the $9,783 million as of September 30, 2016 were $4,364 million of repurchase agreements and $5,419 million of collateral received related to securities lending. Included in the $7,769 million as of December 31, 2015 were $4,499 million of repurchase agreements and $3,270 million of collateral received related to securities lending. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilit ies, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. September 30, 2016 December 31, 2015 Gross Amounts Not Offset in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Net Amount of Liabilities Presented in Statement of Condition Counterparty Netting Cash and Securities Provided (1) Net Amount (2) Net Amount of Liabilities Presented in Statement of Condition Counterparty Netting Cash and Securities Provided (1) Net Amount (2) Derivatives $ 3,562 $ — $ (8 ) $ 3,554 $ 4,132 $ — $ (64 ) $ 4,068 Repurchase agreements and securities lending 9,783 (120 ) (7,461 ) 2,202 7,769 (63 ) (5,287 ) 2,419 Total $ 13,345 $ (120 ) $ (7,469 ) $ 5,756 $ 11,901 $ (63 ) $ (5,351 ) $ 6,487 ( 1) Includes securities provided in connection with our securities lending transactions. (2) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements.
Securities Sold and Securities Loaned Under Repurchase Agreements	The following tables summarize our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements as of the periods indicated: Remaining Contractual Maturity of the Agreements As of September 30, 2016 (In millions) Overnight and Continuous Up to 30 days 30 – 90 days Total Repurchase agreements: U.S. Treasury and agency securities $ 35,399 $ 15 $ — $ 35,414 Non-U.S. sovereign debt — 57 — 57 Total 35,399 72 — 35,471 Securities lending transactions: Corporate debt securities 63 — — 63 Equity securities 9,526 — 894 10,420 Non-U.S. sovereign debt 409 — — 409 Total 9,998 — 894 10,892 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 45,397 $ 72 $ 894 $ 46,363 Remaining Contractual Maturity of the Agreements As of December 31, 2015 (In millions) Overnight and Continuous Up to 30 days 30 – 90 days Total Repurchase agreements: U.S. Treasury and agency securities $ 37,157 $ 5 $ — $ 37,162 Non-U.S. sovereign debt — 97 — 97 Total 37,157 102 — 37,259 Securities lending transactions: Corporate debt securities 1 — — 1 Equity securities 8,502 — 1,002 9,504 Non-U.S. sovereign debt 2 — — 2 Total 8,505 — 1,002 9,507 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 45,662 $ 102 $ 1,002 $ 46,766

Commitments and Guarantees (Tab

Commitments and Guarantees (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Guarantor Obligations	The following table, which presents the aggregate gross contractual amounts of our off-balance sheet guarantees as of the dates indicated, does not consider the value of any collateral, which may mitigate any potential loss. Amounts presented do not reflect participations to independent third parties. (In millions) September 30, 2016 December 31, 2015 Indemnified securities financing $ 344,191 $ 320,436 Stable value protection 27,319 24,583 Asset purchase agreements 4,989 3,990 Standby letters of credit 3,597 4,700
Schedule of Repurchase Agreements	The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Fair value of indemnified securities financing $ 344,191 $ 320,436 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 359,107 335,420 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 64,982 63,055 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 69,031 67,016

Contingencies (Tables)

Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Total Worldwide Revenue from Foreign Exchanges	The following table summarizes our estimated total revenue worldwide from indirect foreign exchange trading for the periods indicated: (In millions) Revenue from Indirect Foreign Exchange Trading Twelve Months Ended December 31, 2008 $ 462 Twelve Months Ended December 31, 2009 369 Twelve Months Ended December 31, 2010 336 Twelve Months Ended December 31, 2011 331 Twelve Months Ended December 31, 2012 248 Twelve Months Ended December 31, 2013 285 Twelve Months Ended December 31, 2014 246 Twelve Months Ended December 31, 2015 280 Nine Months Ended September 30, 2016 201

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Schedule of Preferred Shares	The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of September 30, 2016 : Issuance Date Depositary Shares Issued Ownership Interest per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Net Proceeds of Offering (In millions) Redemption Date (1) Preferred Stock (2) : Series C August 2012 20,000,000 1/4,000th $ 100,000 $ 25 $ 488 September 15, 2017 Series D February 2014 30,000,000 1/4,000th 100,000 25 742 March 15, 2024 Series E November 2014 30,000,000 1/4,000th 100,000 25 728 December 15, 2019 Series F May 2015 750,000 1/100th 100,000 1,000 742 September 15, 2020 Series G April 2016 20,000,000 1/4,000th 100,000 25 493 March 15, 2026 (1) On the redemption date, or any dividend declaration date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends.
Dividends Declared	The table below presents the dividends declared on common stock for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) 2016 2015 2016 2015 Common Stock $ 0.38 $ 147 $ 0.34 $ 138 $ 1.06 $ 414 $ 0.98 $ 401 The following tables present the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Three Months Ended September 30, 2016 2015 Dividends Declared per Share Dividends Declared per Depositary Share Total (1) Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Preferred Stock: Series C $ 1,313 $ 0.33 $ 6 $ 1,313 $ 0.33 $ 7 Series D 1,475 0.37 11 1,475 0.37 11 Series E 1,500 0.38 11 1,500 0.38 11 Series F 2,625 26.25 20 1,663 16.63 12 Series G 1,338 0.33 7 — — — Total $ 55 $ 41 Nine Months Ended September 30, 2016 2015 Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Dividends Declared per Share Dividends Declared per Depositary Share Total (In millions) Preferred Stock: Series C $ 3,939 $ 0.99 $ 19 $ 3,939 $ 0.99 $ 20 Series D 4,425 1.11 33 4,425 1.11 33 Series E 4,500 1.14 33 4,833 1.22 36 Series F 5,250 52.50 40 1,663 16.63 12 Series G 2,289 0.57 12 — — — Total $ 137 $ 101 (1) Dividends were paid in September 2016.
Stock Repurchase Program	The table below presents the activity under both the 2016 Program and the 2015 Program during the periods indicated. Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016 Shares Purchased Average Cost per Share Total Purchased Shares Purchased Average Cost per Share Total Purchased 2015 Program — $ — $ — 12.1 $ 58.83 $ 715 2016 Program 4.7 69.03 325 4.7 69.03 325 Total 4.7 $ 69.03 $ 325 16.8 $ 61.68 $ 1,040
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the after-tax components of AOCI as of the dates indicated: (In millions) September 30, 2016 December 31, 2015 Net unrealized gains on cash flow hedges $ 80 $ 293 Net unrealized gains (losses) on available-for-sale securities portfolio 542 9 Net unrealized gains (losses) related to reclassified available-for-sale securities (28 ) (28 ) Net unrealized gains (losses) on available-for-sale securities 514 (19 ) Net unrealized losses on available-for-sale securities designated in fair value hedges (118 ) (109 ) Net unrealized gains (losses) on hedges of net investments in non-U.S. subsidiaries 41 (14 ) Other-than-temporary impairment on held-to-maturity securities related to factors other than credit (11 ) (16 ) Net unrealized losses on retirement plans (182 ) (183 ) Foreign currency translation (1,317 ) (1,394 ) Total $ (993 ) $ (1,442 ) The following tables present changes in AOCI by component, net of related taxes, for the periods indicated: Nine Months Ended September 30, 2016 (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2015 $ 293 $ (128 ) $ (14 ) $ (16 ) $ (183 ) $ (1,394 ) $ (1,442 ) Other comprehensive income (loss) before reclassifications (213 ) 520 55 6 — 77 445 Amounts reclassified into (out of) earnings — 4 — (1 ) 1 — 4 Other comprehensive income (loss) (213 ) 524 55 5 1 77 449 Balance as of September 30, 2016 $ 80 $ 396 $ 41 $ (11 ) $ (182 ) $ (1,317 ) $ (993 ) Nine Months Ended September 30, 2015 (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Losses on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2014 $ 276 $ 192 $ (14 ) $ (29 ) $ (272 ) $ (660 ) $ (507 ) Other comprehensive income (loss) before reclassifications 44 (112 ) — 12 — (555 ) (611 ) Amounts reclassified into (out of) earnings 2 (3 ) — (1 ) 19 — 17 Other comprehensive income (loss) 46 (115 ) — 11 19 (555 ) (594 ) Balance as of September 30, 2015 $ 322 $ 77 $ (14 ) $ (18 ) $ (253 ) $ (1,215 ) $ (1,101 )
Schedule of Reclassifications Out of AOCI	The following tables present after-tax reclassifications into (out of) earnings for the periods indicated: Three Months Ended September 30, 2016 2015 (In millions) Amounts Reclassified into (out of) Earnings Affected Line Item in Consolidated Statement of Income Cash flow hedges: Interest-rate contracts $ — $ 1 Net interest revenue Available-for-sale securities: Net realized gains from sales of available-for-sale securities, net of related taxes of ($2) and $0, respectively 2 (1 ) Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related tax benefit of $1 and $0, respectively — — Losses reclassified (from) to other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of $1 and ($3), respectively (1 ) 4 Compensation and employee benefits expenses Total reclassifications into AOCI $ 1 $ 4 Nine Months Ended September 30, 2016 2015 (In millions) Amounts Reclassified into (out of) Earnings Affected Line Item in Consolidated Statement of Income Cash flow hedges: Interest-rate contracts, net of related taxes of $0 and $1, respectively $ — $ 2 Net interest revenue Available-for-sale securities: Net realized gains from sales of available-for-sale securities, net of related taxes of ($3) and $1, respectively 4 (3 ) Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of $1 and $0, respectively (1 ) (1 ) Losses reclassified (from) to other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of ($2) and ($4), respectively 1 19 Compensation and employee benefits expenses Total reclassifications into AOCI $ 4 $ 17

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Schedule of Regulatory Capital	The following table presents the regulatory capital structure, total risk-weighted assets, related regulatory capital ratios and the minimum required regulatory capital ratios for State Street and State Street Bank as of the dates indicated. As a result of changes in the methodologies used to calculate our regulatory capital ratios from period to period as the provisions of the Basel III final rule are phased in, the ratios presented in the table for each period-end are not directly comparable. Refer to the footnotes following the table. State Street State Street Bank (In millions) Basel III Advanced Approaches September 30, 2016 (1) Basel III Standardized Approach September 30, 2016 (2) Basel III Advanced Approaches December 31, 2015 (1) Basel III Standardized Approach December 31, 2015 (2) Basel III Advanced Approaches September 30, 2016 (1) Basel III Standardized Approach September 30, 2016 (2) Basel III Advanced Approaches December 31, 2015 (1) Basel III Standardized Approach December 31, 2015 (2) Common shareholders' equity: Common stock and related surplus $ 10,282 $ 10,282 $ 10,250 $ 10,250 $ 11,339 $ 11,339 $ 10,938 $ 10,938 Retained earnings 17,047 17,047 16,049 16,049 11,593 11,593 10,655 10,655 Accumulated other comprehensive income (loss) (1,107 ) (1,107 ) (1,422 ) (1,422 ) (880 ) (880 ) (1,230 ) (1,230 ) Treasury stock, at cost (7,382 ) (7,382 ) (6,457 ) (6,457 ) — — — — Total 18,840 18,840 18,420 18,420 22,052 22,052 20,363 20,363 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (3) (6,483 ) (6,483 ) (5,927 ) (5,927 ) (6,152 ) (6,152 ) (5,631 ) (5,631 ) Other adjustments (88 ) (88 ) (60 ) (60 ) (83 ) (83 ) (85 ) (85 ) Common equity tier 1 capital 12,269 12,269 12,433 12,433 15,817 15,817 14,647 14,647 Preferred stock 3,196 3,196 2,703 2,703 — — — — Trust preferred capital securities subject to phase-out from tier 1 capital — — 237 237 — — — — Other adjustments (58 ) (58 ) (109 ) (109 ) — — — — Tier 1 capital 15,407 15,407 15,264 15,264 15,817 15,817 14,647 14,647 Qualifying subordinated long-term debt 1,259 1,259 1,358 1,358 1,270 1,270 1,371 1,371 Trust preferred capital securities phased out of tier 1 capital 890 890 713 713 — — — — ALLL and other 3 75 12 66 4 75 8 66 Other adjustments 1 1 2 2 — — — — Total capital $ 17,560 $ 17,632 $ 17,349 $ 17,403 $ 17,091 $ 17,162 $ 16,026 $ 16,084 Risk-weighted assets: Credit risk $ 51,916 $ 96,668 $ 51,733 $ 93,515 $ 47,609 $ 92,165 $ 47,677 $ 89,164 Operational risk 44,643 NA 43,882 NA 44,115 NA 43,324 NA Market risk (4) 3,177 1,706 3,937 2,378 3,177 1,706 3,939 2,378 Total risk-weighted assets $ 99,736 $ 98,374 $ 99,552 $ 95,893 $ 94,901 $ 93,871 $ 94,940 $ 91,542 Adjusted quarterly average assets $ 226,093 $ 226,093 $ 221,880 $ 221,880 $ 221,508 $ 221,508 $ 217,358 $ 217,358 Capital Ratios: 2016 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (5) 2015 Minimum Requirements (6) Common equity tier 1 capital 5.5 % 4.5 % 12.3 % 12.5 % 12.5 % 13.0 % 16.7 % 16.8 % 15.4 % 16.0 % Tier 1 capital 7.0 6.0 15.4 15.7 15.3 15.9 16.7 16.8 15.4 16.0 Total capital 9.0 8.0 17.6 17.9 17.4 18.1 18.0 18.3 16.9 17.6 Tier 1 leverage 4.0 4.0 6.8 6.8 6.9 6.9 7.1 7.1 6.7 6.7 NA: Not applicable. (1) Common equity tier 1 capital, tier 1 capital and total capital ratios as of September 30, 2016 and December 31, 2015 were calculated in conformity with the advanced approaches provisions of the Basel III final rule. Tier 1 leverage ratio as of September 30, 2016 and December 31, 2015 were calculated in conformity with the Basel III final rule. (2) Common equity tier 1 capital, tier 1 capital and total capital ratios as of September 30, 2016 and December 31, 2015 were calculated in conformity with the standardized approach provisions of the Basel III final rule. Tier 1 leverage ratio as of September 30, 2016 and December 31, 2015 were calculated in conformity with the Basel III final rule. (3) Amounts for State Street and State Street Bank as of September 30, 2016 consisted of goodwill, net of associated deferred tax liabilities, and 60% of other intangible assets, net of associated deferred tax liabilities. Amounts for State Street and State Street Bank as of December 31, 2015 consisted of goodwill, net of deferred tax liabilities and 40% of other intangible assets, net of associated deferred tax liabilities. Intangible assets, net of associated deferred tax liabilities is phased in as a deduction from capital, in conformity with the Basel III final rule. (4) Market risk risk-weighted assets reported in conformity with the Basel III advanced approaches included a CVA which reflected the risk of potential fair-value adjustments for credit risk reflected in our valuation of over-the-counter derivative contracts. The CVA was not provided for in the final market risk capital rule; however, it was required by the advanced approaches provisions of the Basel III final rule. State Street used the simple CVA approach in conformity with the Basel III advanced approaches. (5) Minimum requirements will be phased in up to full implementation beginning on January 1, 2019; minimum requirements listed are as of September 30, 2016 . (6) Minimum requirements will be phased in up to full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2015 .

Net Interest Revenue (Tables)

Net Interest Revenue (Tables)	9 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Components of Interest Revenue and Interest Expense	The following table presents the components of interest revenue and interest expense, and related net interest revenue, for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Interest revenue: Deposits with banks $ 29 $ 53 $ 101 $ 161 Investment securities: U.S. Treasury and federal agencies 200 178 620 537 State and political subdivisions 55 57 162 173 Other investments 208 227 580 733 Securities purchased under resale agreements 40 18 112 45 Trading account assets — — 1 — Loans and leases 97 79 281 229 Other interest-earning assets 18 2 39 7 Total interest revenue 647 614 1,896 1,885 Interest expense: Deposits 20 28 73 67 Securities sold under repurchase agreements — — 1 — Short-term borrowings 2 1 4 5 Long-term debt 68 62 191 185 Other interest-bearing liabilities 20 10 57 34 Total interest expense 110 101 326 291 Net interest revenue $ 537 $ 513 $ 1,570 $ 1,594

Expenses (Tables)

Expenses (Tables)	9 Months Ended
	Sep. 30, 2016
Other Expenses [Abstract]
Schedule of Expenses	The following table presents the components of other expenses for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2016 2015 2016 2015 Litigation $ 47 $ (7 ) $ 47 $ 396 Insurance 31 33 74 98 Regulatory fees and assessments 28 31 65 90 Securities processing 10 40 20 75 Other 71 44 231 186 Total other expenses $ 187 $ 141 $ 437 $ 845
Restructuring and Related Costs	The following table presents aggregate restructuring activity for the periods indicated. (In millions) Employee Real Estate Asset and Other Write-offs Total Balance at December 31, 2015 $ 9 $ 11 $ 3 $ 23 Accruals for State Street Beacon 86 — 11 97 Payments and Other Adjustments (4 ) (1 ) (7 ) (12 ) Balance at March 31, 2016 91 10 7 108 Accruals for State Street Beacon (1 ) 15 (1 ) 13 Payments and Other Adjustments (35 ) (3 ) (1 ) (39 ) Balance at June 30, 2016 55 22 5 82 Accruals for State Street Beacon 8 3 (1 ) 10 Payments and Other Adjustments (14 ) (3 ) (1 ) (18 ) Balance at September 30, 2016 $ 49 $ 22 $ 3 $ 74

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended September 30, (Dollars in millions, except per share amounts) 2016 2015 Net income $ 563 $ 581 Less: Preferred stock dividends (55 ) (42 ) Dividends and undistributed earnings allocated to participating securities (1) (1 ) — Net income available to common shareholders $ 507 $ 539 Average common shares outstanding (In thousands): Basic average common shares 388,358 406,612 Effect of dilutive securities: common stock options and common stock awards 4,854 5,555 Diluted average common shares 393,212 412,167 Anti-dilutive securities (2) 2,166 619 Earnings per Common Share: Basic $ 1.31 $ 1.33 Diluted (3) 1.29 1.31 Nine Months Ended September 30, (Dollars in millions, except per share amounts) 2016 2015 Net income $ 1,550 $ 1,404 Less: Preferred stock dividends (137 ) (102 ) Dividends and undistributed earnings allocated to participating securities (1) (2 ) (1 ) Net income available to common shareholders $ 1,411 $ 1,301 Average common shares outstanding (In thousands): Basic average common shares 393,959 409,816 Effect of dilutive securities: common stock options and common stock awards 4,454 5,956 Diluted average common shares 398,413 415,772 Anti-dilutive securities (2) 3,027 675 Earnings per Common Share: Basic $ 3.58 $ 3.18 Diluted (3) 3.54 3.13 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of fully vested deferred director stock and unvested restricted stock that contain non-forfeitable rights to dividends during the vesting period on a basis equivalent to dividends paid to common shareholders. (2) Represents common stock options and other equity-based awards outstanding but not included in the computation of diluted average common shares, because their effect was anti-dilutive. (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information (T

Line of Business Information (Tables)	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Summary of Line of Business Results	The following is a summary of our line-of-business results for the periods indicated. The “Other” column represents costs incurred that are not allocated to a specific line of business, including certain severance and restructuring costs, acquisition costs and certain provisions for legal contingencies. Three Months Ended September 30, Investment Investment Other Total (Dollars in millions, except where otherwise noted) 2016 2015 2016 2015 2016 2015 2016 2015 Servicing fees $ 1,303 $ 1,289 $ — $ — $ — $ — $ 1,303 $ 1,289 Management fees — — 368 287 — — 368 287 Trading services 254 283 13 11 — — 267 294 Securities finance 136 113 — — — — 136 113 Processing fees and other 6 131 (1 ) (11 ) — — 5 120 Total fee revenue 1,699 1,816 380 287 — — 2,079 2,103 Net interest revenue 536 514 1 (1 ) — — 537 513 Gains (losses) related to investment securities, net 4 (2 ) — — — — 4 (2 ) Total revenue 2,239 2,328 381 286 — — 2,620 2,614 Provision for loan losses — 5 — — — — — 5 Total expenses 1,634 1,673 317 204 33 85 1,984 1,962 Income before income tax expense $ 605 $ 650 $ 64 $ 82 $ (33 ) $ (85 ) $ 636 $ 647 Pre-tax margin 27 % 28 % 17 % 29 % 24 % 25 % Nine Months Ended September 30, Investment Investment Other Total (Dollars in millions, except where otherwise noted) 2016 2015 2016 2015 2016 2015 2016 2015 Servicing fees $ 3,784 $ 3,876 $ — $ — $ — $ — $ 3,784 $ 3,876 Management fees — — 931 892 — — 931 892 Trading services 771 869 35 30 — — 806 899 Securities finance 426 369 — — — — 426 369 Processing fees and other 153 212 2 (14 ) — — 155 198 Total fee revenue 5,134 5,326 968 908 — — 6,102 6,234 Net interest revenue 1,567 1,593 3 1 — — 1,570 1,594 Gains (losses) related to investment securities, net 5 (6 ) — — — — 5 (6 ) Total revenue 6,706 6,913 971 909 — — 7,677 7,822 Provision for loan losses 8 11 — — — — 8 11 Total expenses 4,920 5,389 817 711 157 93 5,894 6,193 Income before income tax expense $ 1,778 $ 1,513 $ 154 $ 198 $ (157 ) $ (93 ) $ 1,775 $ 1,618 Pre-tax margin 27 % 22 % 16 % 22 % 23 % 21 %

Non-U.S. Activities (Tables)

Non-U.S. Activities (Tables)	9 Months Ended
	Sep. 30, 2016
Segments, Geographical Areas [Abstract]
Schedule of Results from Non-U.S. Operations	The following table presents our U.S. and non-U.S. financial results for the periods indicated: Three Months Ended September 30, 2016 Three Months Ended September 30, 2015 (In millions) Non-U.S. U.S. Total Non-U.S. U.S. Total Total revenue $ 1,117 $ 1,503 $ 2,620 $ 1,088 $ 1,526 $ 2,614 Income before income taxes 314 322 636 255 392 647 Nine Months Ended September 30, 2016 Nine Months Ended September 30, 2015 (In millions) Non-U.S. U.S. Total Non-U.S. U.S. Total Total revenue $ 3,278 $ 4,399 $ 7,677 $ 3,385 $ 4,437 $ 7,822 Income before income taxes 835 940 1,775 946 672 1,618

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Basis of Presentation (Details) - GEAM - USD ($) $ in Millions	Jul. 01, 2016	Sep. 30, 2016
Business Acquisition [Line Items]
Purchase price	$ 437
Maximum additional consideration tied to incremental opportunities	$ 46
Assets under management		$ 112,000

Summary of Significant Accoun47

Summary of Significant Accounting Policies - New Accounting Pronouncement (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Accounting Standards Update 2015-03 | Long-term debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs	$ 40	$ 37

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Assets, level 1 to level 2 transfers	$ 0	$ 0
Assets, level 2 to level 1 transfers	0	0
Liabilities, level 1 to level 2 transfers	0	0
Liabilities, level 2 to level 1 transfers	$ 0	$ 0

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	$ 1,063	$ 849
Investment securities available-for-sale	71,520	70,070
Derivative, collateral, cash offset	(929)	(776)
Derivative collateral, cash offset	(731)	(1,118)
Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,270	1,760
Non-US debt securities, covered bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3,980	3,180
Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	981	613
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	1,063	849
Investment securities available-for-sale	71,520	70,070
Derivative asset, gross liability and obligation to return cash, offset	(4,876)	(6,679)
Derivative assets	3,503	4,777
Other assets	409	2
Total	76,495	75,698
Derivative liability, gross asset and obligation to return cash, offset	(4,678)	(7,021)
Derivative liabilities	3,562	4,132
Other liabilities	409	2
Total liabilities carried at fair value	4,084	4,233
Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	15	5
Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	60	76
Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	38	18
Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross liability and obligation to return cash, offset	(4,679)	(6,562)
Derivative assets	3,458	4,754
Derivative liability, gross asset and obligation to return cash, offset	(4,636)	(6,995)
Derivative liabilities	3,265	3,873
Recurring | Interest-rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross liability and obligation to return cash, offset	(194)	(115)
Derivative assets	45	20
Derivative liability, gross asset and obligation to return cash, offset	(39)	(24)
Derivative liabilities	150	158
Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross liability and obligation to return cash, offset	(3)	(2)
Derivative assets	0	3
Derivative liability, gross asset and obligation to return cash, offset	(3)	(2)
Derivative liabilities	147	101
Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	57	32
Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	425	479
Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	581	338
Investment securities available-for-sale	2,338	2,624
Recurring | US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,302	5,718
Recurring | US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	17,995	18,165
Recurring | Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	7,307	7,176
Recurring | Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,375	1,341
Recurring | Asset-backed securities, sub-prime
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	354	419
Recurring | Asset-backed securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,273	1,764
Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	10,309	10,700
Recurring | Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	7,161	7,071
Recurring | Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,529	3,267
Recurring | Non-U.S. debt securities, Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,984	4,355
Recurring | Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,919	4,834
Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	21,593	19,527
Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	10,756	9,746
Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,806	2,987
Recurring | U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	41	39
Recurring | Non-U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3	3
Recurring | U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	361	542
Recurring | Non-U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	16	19
Quoted Market Prices in Active Markets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	526	521
Investment securities available-for-sale	4,846	5,206
Derivative asset	0	0
Other assets	409	2
Total	5,781	5,729
Derivative liability	0	0
Other liabilities	409	2
Total liabilities carried at fair value	516	88
Quoted Market Prices in Active Markets (Level 1) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	15	5
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	60	76
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	32	5
Quoted Market Prices in Active Markets (Level 1) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Interest-rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	57	32
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	425	479
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	44	10
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	4,846	5,206
Quoted Market Prices in Active Markets (Level 1) | Recurring | US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Asset-backed securities, sub-prime
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Asset-backed securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. debt securities, Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	537	328
Investment securities available-for-sale	64,331	62,400
Derivative asset	8,379	11,451
Other assets	0	0
Total	73,247	74,179
Derivative liability	8,240	11,148
Other liabilities	0	0
Total liabilities carried at fair value	8,246	11,161
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	6	13
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8,137	11,311
Derivative liability	7,901	10,863
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Interest-rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	239	135
Derivative liability	189	182
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	3	5
Derivative liability	150	103
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	537	328
Investment securities available-for-sale	2,338	2,614
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	456	512
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	17,945	18,165
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	7,115	6,987
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,375	1,341
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Asset-backed securities, sub-prime
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	354	419
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Asset-backed securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	8,844	8,747
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	7,071	7,071
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,391	3,093
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. debt securities, Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,984	4,355
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,461	4,579
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	20,907	19,098
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	10,716	9,713
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,704	2,948
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	41	39
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3	3
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	361	542
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	16	19
Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	2,343	2,469
Total liabilities carried at fair value		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Investment securities available-for-sale	2,343	2,464
Derivative asset	0	5
Other assets	0	0
Total	2,343	2,469
Derivative liability	0	5
Other liabilities	0	0
Total liabilities carried at fair value	0	5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liabilities	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	5
Derivative liability	0	5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Interest-rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Investment securities available-for-sale	0	10
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	50	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	192	189
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Asset-backed securities, sub-prime
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Asset-backed securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,273	1,764
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,465	1,953
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	90	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	138	174
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. debt securities, Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	458	255
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	686	429
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	40	33
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	102	39
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. money-market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	$ 0	$ 0

Fair Value - Schedule of Fair50

Fair Value - Schedule of Fair Value Measurements, Assets, Using Significant Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	$ 2,398	$ 4,041	$ 2,469	$ 5,447
Total realized and unrealized gain (losses) recorded in revenue	13	17	33	97
Total realized and unrealized gain (losses) recorded in other comprehensive income	2	(26)	(9)	(44)
Purchases	553	169	1,170	632
Sales		(686)		(1,194)
Settlements	(569)	(443)	(828)	(1,157)
Transfers into Level 3				97
Transfers out of Level 3	(54)	(146)	(492)	(952)
Fair value, end of period	2,343	2,926	2,343	2,926
Change in unrealized gains (losses) related to financial instruments held	0	0	0	0
Derivative instruments, assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period		60	5	81
Total realized and unrealized gain (losses) recorded in revenue		(5)	3	49
Total realized and unrealized gain (losses) recorded in other comprehensive income		0	0	0
Purchases		1	0	17
Sales		0		0
Settlements		(35)	(8)	(126)
Transfers into Level 3				0
Transfers out of Level 3		0	0	0
Fair value, end of period	0	21	0	21
Change in unrealized gains (losses) related to financial instruments held		0	0	0
Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period		60	5	81
Total realized and unrealized gain (losses) recorded in revenue		(5)	3	49
Total realized and unrealized gain (losses) recorded in other comprehensive income		0	0	0
Purchases		1	0	17
Sales		0		0
Settlements		(35)	(8)	(126)
Transfers into Level 3				0
Transfers out of Level 3		0	0	0
Fair value, end of period	0	21	0	21
Change in unrealized gains (losses) related to financial instruments held		0	0	0
Investment securities available for sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	2,398	3,981	2,464	5,366
Total realized and unrealized gain (losses) recorded in revenue	13	22	30	48
Total realized and unrealized gain (losses) recorded in other comprehensive income	2	(26)	(9)	(44)
Purchases	553	168	1,170	615
Sales		(686)		(1,194)
Settlements	(569)	(408)	(820)	(1,031)
Transfers into Level 3				97
Transfers out of Level 3	(54)	(146)	(492)	(952)
Fair value, end of period	2,343	2,905	2,343	2,905
US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	25		0
Total realized and unrealized gain (losses) recorded in revenue	0		0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0		0
Purchases	25		325
Settlements	0		0
Transfers out of Level 3	0		(275)
Fair value, end of period	50		50
Asset-backed securities, student loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	190	234	189	259
Total realized and unrealized gain (losses) recorded in revenue	0	0	1	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	2	(3)	2	(2)
Purchases	0	0	0	0
Sales		0		0
Settlements	0	(1)	0	(6)
Transfers into Level 3				0
Transfers out of Level 3	0	0	0	(21)
Fair value, end of period	192	230	192	230
Asset-backed securities, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	1,710	2,933	1,764	3,780
Total realized and unrealized gain (losses) recorded in revenue	13	22	29	47
Total realized and unrealized gain (losses) recorded in other comprehensive income	(8)	(19)	(21)	(37)
Purchases	118	0	250	0
Sales		(686)		(1,106)
Settlements	(560)	(307)	(749)	(741)
Transfers into Level 3				0
Transfers out of Level 3	0	0	0	0
Fair value, end of period	1,273	1,943	1,273	1,943
Total asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	1,900	3,167	1,953	4,039
Total realized and unrealized gain (losses) recorded in revenue	13	22	30	47
Total realized and unrealized gain (losses) recorded in other comprehensive income	(6)	(22)	(19)	(39)
Purchases	118	0	250	0
Sales		(686)		(1,106)
Settlements	(560)	(308)	(749)	(747)
Transfers into Level 3				0
Transfers out of Level 3	0	0	0	(21)
Fair value, end of period	1,465	2,173	1,465	2,173
Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	0	97	0	0
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	0	0	0
Purchases	90	0	90	43
Sales		0		0
Settlements	0	0	0	0
Transfers into Level 3				97
Transfers out of Level 3	0	(97)	0	(140)
Fair value, end of period	90	0	90	0
Non-U.S. debt securities, asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	111	193	174	295
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	1
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	(1)	(1)	(1)
Purchases	90	168	196	168
Sales		0		0
Settlements	(9)	(83)	(43)	(169)
Transfers into Level 3				0
Transfers out of Level 3	(54)	0	(188)	(17)
Fair value, end of period	138	277	138	277
Non-U.S. debt securities, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	261	264	255	371
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	(1)	0	0
Purchases	194	0	223	111
Sales		0		0
Settlements	3	0	9	(32)
Transfers into Level 3				0
Transfers out of Level 3	0	0	(29)	(187)
Fair value, end of period	458	263	458	263
Total non-U.S. debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	372	554	429	666
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	1
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	(2)	(1)	(1)
Purchases	374	168	509	322
Sales		0		0
Settlements	(6)	(83)	(34)	(201)
Transfers into Level 3				97
Transfers out of Level 3	(54)	(97)	(217)	(344)
Fair value, end of period	686	540	686	540
State and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	33	36	33	38
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	7	(1)	9	(2)
Purchases	0	0	0	0
Sales		0		0
Settlements	0	0	(2)	(1)
Transfers into Level 3				0
Transfers out of Level 3	0	0	0	0
Fair value, end of period	40	35	40	35
Collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	68	215	39	614
Total realized and unrealized gain (losses) recorded in revenue	0	0	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	1	(1)	2	(2)
Purchases	36	0	86	293
Sales				(88)
Settlements	(3)	(17)	(25)	(82)
Transfers into Level 3				0
Transfers out of Level 3	0	(49)	0	(587)
Fair value, end of period	102	148	102	148
Other U.S. debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period		9	10	9
Total realized and unrealized gain (losses) recorded in revenue		0	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income		0	0	0
Purchases		0	0	0
Sales		0		0
Settlements		0	(10)	0
Transfers into Level 3				0
Transfers out of Level 3		0	0	0
Fair value, end of period	$ 0	$ 9	$ 0	$ 9

Fair Value - Schedule of Fair51

Fair Value - Schedule of Fair Value Measurements, Liabilities, Using Significant Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	$ 50	$ 5	$ 83
Total realized and unrealized (gains) losses recorded in revenue	(3)	5	24
Issuances	1		19
Settlements	(26)	(10)	(104)
Fair value, end of period	22	0	22
Change in unrealized (gains) losses related to financial instruments held	1	0	(2)
Derivative instruments, liabilities | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	50	5	83
Total realized and unrealized (gains) losses recorded in revenue	(3)	5	24
Issuances	1		19
Settlements	(26)	(10)	(104)
Fair value, end of period	22	0	22
Change in unrealized (gains) losses related to financial instruments held	1	0	(2)
Foreign exchange contracts | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	50	5	74
Total realized and unrealized (gains) losses recorded in revenue	(3)	5	24
Issuances	1		19
Settlements	(26)	(10)	(95)
Fair value, end of period	22	0	22
Change in unrealized (gains) losses related to financial instruments held	1	$ 0	(2)
Other | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period			9
Total realized and unrealized (gains) losses recorded in revenue			0
Issuances			0
Settlements			(9)
Fair value, end of period	$ 0		0
Change in unrealized (gains) losses related to financial instruments held			$ 0

Fair Value - Level 3 Total Real

Fair Value - Level 3 Total Realized And Unrealized Gains And Losses Recorded In Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Total revenue
Realized and Unrealized Gains and Losses [Line Items]
Total realized and unrealized gains (losses) recorded in revenue	$ 13	$ 20	$ 28	$ 73
Change in unrealized gains (losses) related to financial instruments held	0	(1)	0	2
Trading services
Realized and Unrealized Gains and Losses [Line Items]
Total realized and unrealized gains (losses) recorded in revenue	0	(1)	(2)	25
Change in unrealized gains (losses) related to financial instruments held	0	(1)	0	2
Total fee revenue
Realized and Unrealized Gains and Losses [Line Items]
Total realized and unrealized gains (losses) recorded in revenue	0	(1)	(2)	25
Change in unrealized gains (losses) related to financial instruments held	0	(1)	0	2
Net interest revenue
Realized and Unrealized Gains and Losses [Line Items]
Total realized and unrealized gains (losses) recorded in revenue	13	21	30	48
Change in unrealized gains (losses) related to financial instruments held	$ 0	$ 0	$ 0	$ 0

Fair Value - Fair Value Inputs,

Fair Value - Fair Value Inputs, Assets and Liabilities, Quantitative Information (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	$ 71,520	$ 70,070
Asset-backed securities, other
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	1,273	1,764
State and political subdivisions
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	10,756	9,746
Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Total	2,343	2,469
Total		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, other
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	1,273	1,764
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | State and political subdivisions
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	$ 40	$ 33
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Discounted cash flows | Asset-backed securities, other | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Credit spread	0.70%	(0.10%)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Discounted cash flows | State and political subdivisions | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Credit spread	2.00%	2.20%
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Option model | Derivative instruments, liabilities | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Volatility	0.00%	9.20%
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Option model | Derivative instruments, assets | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Volatility	0.00%	9.30%
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Total	$ 54	$ 66
Total	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, other
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	14	28
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | State and political subdivisions
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Investment securities available-for-sale	$ 40	$ 33

Fair Value - Schedule of Availa

Fair Value - Schedule of Availability of Significant Unobservable Inputs by Balance Sheet Classification (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Assets:
Investment securities available-for-sale	$ (71,520)	$ (70,070)
Asset-backed securities, student loans
Assets:
Investment securities available-for-sale	(7,307)	(7,176)
Asset-backed securities, other
Assets:
Investment securities available-for-sale	(1,273)	(1,764)
Non-U.S. debt securities, mortgage-backed securities
Assets:
Investment securities available-for-sale	(7,161)	(7,071)
Non-U.S. debt securities, asset-backed securities
Assets:
Investment securities available-for-sale	(2,529)	(3,267)
Non-U.S. debt securities, other
Assets:
Investment securities available-for-sale	(5,919)	(4,834)
State and political subdivisions
Assets:
Investment securities available-for-sale	(10,756)	(9,746)
Collateralized mortgage obligations
Assets:
Investment securities available-for-sale	(2,806)	(2,987)
Other U.S. debt securities
Assets:
Investment securities available-for-sale	(2,338)	(2,624)
Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Assets:
Total	2,343	2,469
Liabilities:
Total		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, liabilities
Liabilities:
Derivative instruments, foreign exchange contracts		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, assets
Assets:
Derivative instruments, foreign exchange contracts		5
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | U.S. Treasury and federal agencies, mortgage-backed securities
Assets:
Investment securities available-for-sale	(50)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, student loans
Assets:
Investment securities available-for-sale	(192)	(189)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, other
Assets:
Investment securities available-for-sale	(1,273)	(1,764)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, mortgage-backed securities
Assets:
Investment securities available-for-sale	(90)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, asset-backed securities
Assets:
Investment securities available-for-sale	(138)	(174)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, other
Assets:
Investment securities available-for-sale	(458)	(255)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | State and political subdivisions
Assets:
Investment securities available-for-sale	(40)	(33)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Collateralized mortgage obligations
Assets:
Investment securities available-for-sale	(102)	(39)
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Other U.S. debt securities
Assets:
Investment securities available-for-sale		(10)
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Assets:
Total	54	66
Liabilities:
Total	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, liabilities
Liabilities:
Derivative instruments, foreign exchange contracts	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, assets
Assets:
Derivative instruments, foreign exchange contracts	0	5
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | U.S. Treasury and federal agencies, mortgage-backed securities
Assets:
Investment securities available-for-sale	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, student loans
Assets:
Investment securities available-for-sale	0	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, other
Assets:
Investment securities available-for-sale	(14)	(28)
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, mortgage-backed securities
Assets:
Investment securities available-for-sale	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, asset-backed securities
Assets:
Investment securities available-for-sale	0	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, other
Assets:
Investment securities available-for-sale	0	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | State and political subdivisions
Assets:
Investment securities available-for-sale	(40)	(33)
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Collateralized mortgage obligations
Assets:
Investment securities available-for-sale	0	0
Significant Unobservable Inputs Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Other U.S. debt securities
Assets:
Investment securities available-for-sale		0
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Assets:
Total	2,289	2,403
Liabilities:
Total		0
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, liabilities
Liabilities:
Derivative instruments, foreign exchange contracts		0
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Derivative instruments, assets
Assets:
Derivative instruments, foreign exchange contracts		0
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | U.S. Treasury and federal agencies, mortgage-backed securities
Assets:
Investment securities available-for-sale	(50)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, student loans
Assets:
Investment securities available-for-sale	(192)	(189)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Asset-backed securities, other
Assets:
Investment securities available-for-sale	(1,259)	(1,736)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, mortgage-backed securities
Assets:
Investment securities available-for-sale	(90)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, asset-backed securities
Assets:
Investment securities available-for-sale	(138)	(174)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Non-U.S. debt securities, other
Assets:
Investment securities available-for-sale	(458)	(255)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | State and political subdivisions
Assets:
Investment securities available-for-sale	0	0
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Collateralized mortgage obligations
Assets:
Investment securities available-for-sale	$ (102)	(39)
Significant Unobservable Inputs Not Readily Available | Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Other U.S. debt securities
Assets:
Investment securities available-for-sale		$ (10)

Fair Value - Carrying Value and

Fair Value - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Financial Assets:
Cash and due from banks	$ 3,490	$ 1,207	$ 3,660	$ 1,855
Interest-bearing deposits with banks	79,090	75,338
Securities purchased under resale agreements	2,442	3,404
Held to maturity, fair value	28,780	29,798
Financial Liabilities:
Noninterest-bearing	60,545	65,800
Interest-bearing—U.S.	33,767	29,958
Interest-bearing—non-U.S.	104,454	95,869
Securities sold under repurchase agreements	4,364	4,499
Federal funds purchased	28	6
Other short-term borrowings	1,385	1,748
Reported Value Measurement
Financial Assets:
Cash and due from banks	3,490	1,207
Interest-bearing deposits with banks	79,090	75,338
Securities purchased under resale agreements	2,442	3,404
Held to maturity, fair value	28,368	29,952
Net loans (excluding leases)	20,605	17,838
Financial Liabilities:
Noninterest-bearing	60,545	65,800
Interest-bearing—U.S.	33,767	29,958
Interest-bearing—non-U.S.	104,454	95,869
Securities sold under repurchase agreements	4,364	4,499
Federal funds purchased	28	6
Other short-term borrowings	1,385	1,748
Long-term debt	11,834	11,497
Estimate of Fair Value Measurement
Financial Assets:
Cash and due from banks	3,490	1,207
Interest-bearing deposits with banks	79,090	75,338
Securities purchased under resale agreements	2,442	3,404
Held to maturity, fair value	28,780	29,798
Net loans (excluding leases)	20,610	17,792
Financial Liabilities:
Noninterest-bearing	60,545	65,800
Interest-bearing—U.S.	33,767	29,958
Interest-bearing—non-U.S.	104,454	95,869
Securities sold under repurchase agreements	4,364	4,499
Federal funds purchased	28	6
Other short-term borrowings	1,385	1,748
Long-term debt	12,015	11,604
Estimate of Fair Value Measurement | Fair Value, Measurements, Nonrecurring
Financial Assets:
Net loans (excluding leases)	14	14
Estimate of Fair Value Measurement | Quoted Market Prices in Active Markets (Level 1)
Financial Assets:
Cash and due from banks	3,490	1,207
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Held to maturity, fair value	17,795	0
Net loans (excluding leases)	0	0
Financial Liabilities:
Noninterest-bearing	0	0
Interest-bearing—U.S.	0	0
Interest-bearing—non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Federal funds purchased	0	0
Other short-term borrowings	0	0
Long-term debt	0	0
Estimate of Fair Value Measurement | Pricing Methods with Significant Observable Market Inputs (Level 2)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	79,090	75,338
Securities purchased under resale agreements	2,442	3,404
Held to maturity, fair value	10,910	29,798
Net loans (excluding leases)	20,509	17,667
Financial Liabilities:
Noninterest-bearing	60,545	65,800
Interest-bearing—U.S.	33,767	29,958
Interest-bearing—non-U.S.	104,454	95,869
Securities sold under repurchase agreements	4,364	4,499
Federal funds purchased	28	6
Other short-term borrowings	1,385	1,748
Long-term debt	11,657	11,215
Estimate of Fair Value Measurement | Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Held to maturity, fair value	75	0
Net loans (excluding leases)	101	125
Financial Liabilities:
Noninterest-bearing	0	0
Interest-bearing—U.S.	0	0
Interest-bearing—non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Federal funds purchased	0	0
Other short-term borrowings	0	0
Long-term debt	$ 358	$ 389

Investment Securities - Narrati

Investment Securities - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016USD ($)security	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Investments, Debt and Equity Securities [Abstract]
Pledged securities not separately reported	$ 35,690		$ 34,180
OTTI on investments	2	$ 1
Unrealized gain (loss), excluding OTTI	$ (366)
Number of securities in loss position | security	962

Investment Securities - Schedul

Investment Securities - Schedule of Marketable Securities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 70,795	$ 69,843
Available for sale, gross unrealized gains	1,016	735
Available for sale, gross unrealized losses	291	508
Investment securities available for sale	71,520	70,070
Held to maturity, amortized cost	28,368	29,952
Held to maturity, gross unrealized gains	487	179
Held to maturity, gross unrealized losses	75	333
Held to maturity, fair value	28,780	29,798
US Treasury and federal agencies, direct obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	5,283	5,717
Available for sale, gross unrealized gains	20	6
Available for sale, gross unrealized losses	1	5
Investment securities available for sale	5,302	5,718
Held to maturity, amortized cost	17,553	20,878
Held to maturity, gross unrealized gains	333	2
Held to maturity, gross unrealized losses	1	217
Held to maturity, fair value	17,885	20,663
US Treasury and federal agencies, mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	17,796	18,168
Available for sale, gross unrealized gains	224	131
Available for sale, gross unrealized losses	25	134
Investment securities available for sale	17,995	18,165
Held to maturity, amortized cost	4,280	610
Held to maturity, gross unrealized gains	20	2
Held to maturity, gross unrealized losses	3	8
Held to maturity, fair value	4,297	604
Asset-backed securities, student loans
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	7,451	7,358
Available for sale, gross unrealized gains	19	16
Available for sale, gross unrealized losses	163	198
Investment securities available for sale	7,307	7,176
Held to maturity, amortized cost	1,440	1,592
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	40	47
Held to maturity, fair value	1,400	1,545
Asset-backed securities, credit cards
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,388	1,378
Available for sale, gross unrealized gains	12	0
Available for sale, gross unrealized losses	25	37
Investment securities available for sale	1,375	1,341
Held to maturity, amortized cost	897	897
Held to maturity, gross unrealized gains	3	0
Held to maturity, gross unrealized losses	0	1
Held to maturity, fair value	900	896
Asset-backed securities, sub-prime
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	376	448
Available for sale, gross unrealized gains	2	2
Available for sale, gross unrealized losses	24	31
Investment securities available for sale	354	419
Asset-backed securities, other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,257	1,724
Available for sale, gross unrealized gains	16	43
Available for sale, gross unrealized losses	0	3
Investment securities available for sale	1,273	1,764
Held to maturity, amortized cost	76	366
Held to maturity, gross unrealized gains	0	2
Held to maturity, gross unrealized losses	0	1
Held to maturity, fair value	76	367
Total asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	10,472	10,908
Available for sale, gross unrealized gains	49	61
Available for sale, gross unrealized losses	212	269
Investment securities available for sale	10,309	10,700
Held to maturity, amortized cost	2,413	2,855
Held to maturity, gross unrealized gains	3	2
Held to maturity, gross unrealized losses	40	49
Held to maturity, fair value	2,376	2,808
Non-U.S. debt securities, mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	7,122	7,010
Available for sale, gross unrealized gains	48	72
Available for sale, gross unrealized losses	9	11
Investment securities available for sale	7,161	7,071
Held to maturity, amortized cost	1,581	2,202
Held to maturity, gross unrealized gains	84	109
Held to maturity, gross unrealized losses	17	26
Held to maturity, fair value	1,648	2,285
Non-U.S. debt securities, asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,528	3,272
Available for sale, gross unrealized gains	4	2
Available for sale, gross unrealized losses	3	7
Investment securities available for sale	2,529	3,267
Held to maturity, amortized cost	697	1,415
Held to maturity, gross unrealized gains	0	4
Held to maturity, gross unrealized losses	1	3
Held to maturity, fair value	696	1,416
Non-U.S. debt securities, Government securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	5,967	4,348
Available for sale, gross unrealized gains	17	7
Available for sale, gross unrealized losses	0	0
Investment securities available for sale	5,984	4,355
Held to maturity, amortized cost	288	239
Held to maturity, gross unrealized gains	3	0
Held to maturity, gross unrealized losses	0	1
Held to maturity, fair value	291	238
Non-U.S. debt securities, other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	5,876	4,817
Available for sale, gross unrealized gains	44	29
Available for sale, gross unrealized losses	1	12
Investment securities available for sale	5,919	4,834
Held to maturity, amortized cost	119	65
Held to maturity, gross unrealized gains	2	0
Held to maturity, gross unrealized losses	0	0
Held to maturity, fair value	121	65
Total non-U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	21,493	19,447
Available for sale, gross unrealized gains	113	110
Available for sale, gross unrealized losses	13	30
Investment securities available for sale	21,593	19,527
Held to maturity, amortized cost	2,685	3,921
Held to maturity, gross unrealized gains	89	113
Held to maturity, gross unrealized losses	18	30
Held to maturity, fair value	2,756	4,004
State and political subdivisions
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	10,274	9,402
Available for sale, gross unrealized gains	505	371
Available for sale, gross unrealized losses	23	27
Investment securities available for sale	10,756	9,746
Held to maturity, amortized cost	0	1
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	0	0
Held to maturity, fair value	0	1
Collateralized mortgage obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,752	2,993
Available for sale, gross unrealized gains	62	16
Available for sale, gross unrealized losses	8	22
Investment securities available for sale	2,806	2,987
Held to maturity, amortized cost	1,437	1,687
Held to maturity, gross unrealized gains	42	60
Held to maturity, gross unrealized losses	13	29
Held to maturity, fair value	1,466	1,718
Other U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,306	2,611
Available for sale, gross unrealized gains	39	31
Available for sale, gross unrealized losses	7	18
Investment securities available for sale	2,338	2,624
U.S. equity securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	39	33
Available for sale, gross unrealized gains	4	9
Available for sale, gross unrealized losses	2	3
Investment securities available for sale	41	39
Non-U.S. equity securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	3	3
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	0	0
Investment securities available for sale	3	3
U.S. money-market mutual funds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	361	542
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	0	0
Investment securities available for sale	361	542
Non-U.S. money-market mutual funds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	16	19
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	0	0
Investment securities available for sale	$ 16	19
Federal family education loan program
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Federal government credit support guarantee, percentage minimum	97.00%
Collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Investment securities available for sale	$ 1,270	1,760
Non-US debt securities, covered bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Investment securities available for sale	3,980	3,180
Non-U.S. debt securities, other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Investment securities available for sale	$ 981	$ 613

Investment Securities - Sched58

Investment Securities - Schedule of Gross Pre-Tax Unrealized Losses on Investment Securities (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	$ 8,382	$ 22,336
Available for sale, gross unrealized losses less than 12 months	30	159
Available for sale, fair value 12 months or longer	9,863	9,468
Available for sale, gross unrealized losses 12 months or longer	261	349
Available for sale, fair value total	18,245	31,804
Available for sale, gross unrealized losses total	291	508
Held to maturity, fair value less than 12 months	2,195	20,679
Held-to-maturity, gross, less than 12 months	22	169
Held to maturity, fair value 12 months or longer	1,900	4,824
Held to maturity, gross unrealized losses 12 months or longer	53	164
Held to maturity, fair value total	4,095	25,503
Held to maturity, gross unrealized losses total	75	333
US Treasury and federal agencies, direct obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	35	3,123
Available for sale, gross unrealized losses less than 12 months	0	4
Available for sale, fair value 12 months or longer	177	121
Available for sale, gross unrealized losses 12 months or longer	1	1
Available for sale, fair value total	212	3,244
Available for sale, gross unrealized losses total	1	5
Held to maturity, fair value less than 12 months	0	16,370
Held-to-maturity, gross, less than 12 months	0	120
Held to maturity, fair value 12 months or longer	90	3,005
Held to maturity, gross unrealized losses 12 months or longer	1	97
Held to maturity, fair value total	90	19,375
Held to maturity, gross unrealized losses total	1	217
US Treasury and federal agencies, mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,116	5,729
Available for sale, gross unrealized losses less than 12 months	12	48
Available for sale, fair value 12 months or longer	858	3,166
Available for sale, gross unrealized losses 12 months or longer	13	86
Available for sale, fair value total	3,974	8,895
Available for sale, gross unrealized losses total	25	134
Held to maturity, fair value less than 12 months	936	560
Held-to-maturity, gross, less than 12 months	3	8
Held to maturity, fair value 12 months or longer	0	0
Held to maturity, gross unrealized losses 12 months or longer	0	0
Held to maturity, fair value total	936	560
Held to maturity, gross unrealized losses total	3	8
Asset-backed securities, student loans
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	520	2,841
Available for sale, gross unrealized losses less than 12 months	3	54
Available for sale, fair value 12 months or longer	4,990	3,217
Available for sale, gross unrealized losses 12 months or longer	160	144
Available for sale, fair value total	5,510	6,058
Available for sale, gross unrealized losses total	163	198
Held to maturity, fair value less than 12 months	452	896
Held-to-maturity, gross, less than 12 months	12	25
Held to maturity, fair value 12 months or longer	922	615
Held to maturity, gross unrealized losses 12 months or longer	28	22
Held to maturity, fair value total	1,374	1,511
Held to maturity, gross unrealized losses total	40	47
Asset-backed securities, credit cards
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	0	838
Available for sale, gross unrealized losses less than 12 months	0	7
Available for sale, fair value 12 months or longer	505	490
Available for sale, gross unrealized losses 12 months or longer	25	30
Available for sale, fair value total	505	1,328
Available for sale, gross unrealized losses total	25	37
Held to maturity, fair value less than 12 months		636
Held-to-maturity, gross, less than 12 months		1
Held to maturity, fair value 12 months or longer		0
Held to maturity, gross unrealized losses 12 months or longer		0
Held to maturity, fair value total		636
Held to maturity, gross unrealized losses total		1
Asset-backed securities, sub-prime
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3	7
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	330	387
Available for sale, gross unrealized losses 12 months or longer	24	31
Available for sale, fair value total	333	394
Available for sale, gross unrealized losses total	24	31
Asset-backed securities, other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	150	720
Available for sale, gross unrealized losses less than 12 months	0	3
Available for sale, fair value 12 months or longer	150	43
Available for sale, gross unrealized losses 12 months or longer	0	0
Available for sale, fair value total	300	763
Available for sale, gross unrealized losses total	0	3
Held to maturity, fair value less than 12 months	0	102
Held-to-maturity, gross, less than 12 months	0	0
Held to maturity, fair value 12 months or longer	15	31
Held to maturity, gross unrealized losses 12 months or longer	0	1
Held to maturity, fair value total	15	133
Held to maturity, gross unrealized losses total	0	1
Asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	673	4,406
Available for sale, gross unrealized losses less than 12 months	3	64
Available for sale, fair value 12 months or longer	5,975	4,137
Available for sale, gross unrealized losses 12 months or longer	209	205
Available for sale, fair value total	6,648	8,543
Available for sale, gross unrealized losses total	212	269
Held to maturity, fair value less than 12 months	452	1,634
Held-to-maturity, gross, less than 12 months	12	26
Held to maturity, fair value 12 months or longer	937	646
Held to maturity, gross unrealized losses 12 months or longer	28	23
Held to maturity, fair value total	1,389	2,280
Held to maturity, gross unrealized losses total	40	49
Non-U.S. debt securities, mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	368	1,457
Available for sale, gross unrealized losses less than 12 months	1	7
Available for sale, fair value 12 months or longer	1,137	437
Available for sale, gross unrealized losses 12 months or longer	8	4
Available for sale, fair value total	1,505	1,894
Available for sale, gross unrealized losses total	9	11
Held to maturity, fair value less than 12 months	104	338
Held-to-maturity, gross, less than 12 months	3	2
Held to maturity, fair value 12 months or longer	406	524
Held to maturity, gross unrealized losses 12 months or longer	14	24
Held to maturity, fair value total	510	862
Held to maturity, gross unrealized losses total	17	26
Non-U.S. debt securities, asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	333	2,190
Available for sale, gross unrealized losses less than 12 months	1	7
Available for sale, fair value 12 months or longer	463	22
Available for sale, gross unrealized losses 12 months or longer	2	0
Available for sale, fair value total	796	2,212
Available for sale, gross unrealized losses total	3	7
Held to maturity, fair value less than 12 months	8	1,015
Held-to-maturity, gross, less than 12 months	0	3
Held to maturity, fair value 12 months or longer	271	69
Held to maturity, gross unrealized losses 12 months or longer	1	0
Held to maturity, fair value total	279	1,084
Held to maturity, gross unrealized losses total	1	3
Government securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	2,044	1,691
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	0	0
Available for sale, gross unrealized losses 12 months or longer	0	0
Available for sale, fair value total	2,044	1,691
Available for sale, gross unrealized losses total	0	0
Held to maturity, fair value less than 12 months	174	128
Held-to-maturity, gross, less than 12 months	0	1
Held to maturity, fair value 12 months or longer	0	0
Held to maturity, gross unrealized losses 12 months or longer	0	0
Held to maturity, fair value total	174	128
Held to maturity, gross unrealized losses total	0	1
Non-U.S. debt securities, other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	569	1,548
Available for sale, gross unrealized losses less than 12 months	1	5
Available for sale, fair value 12 months or longer	363	527
Available for sale, gross unrealized losses 12 months or longer	0	7
Available for sale, fair value total	932	2,075
Available for sale, gross unrealized losses total	1	12
Held to maturity, fair value less than 12 months		0
Held-to-maturity, gross, less than 12 months		0
Held to maturity, fair value 12 months or longer		43
Held to maturity, gross unrealized losses 12 months or longer		0
Held to maturity, fair value total		43
Held to maturity, gross unrealized losses total		0
Total non-U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,314	6,886
Available for sale, gross unrealized losses less than 12 months	3	19
Available for sale, fair value 12 months or longer	1,963	986
Available for sale, gross unrealized losses 12 months or longer	10	11
Available for sale, fair value total	5,277	7,872
Available for sale, gross unrealized losses total	13	30
Held to maturity, fair value less than 12 months	286	1,481
Held-to-maturity, gross, less than 12 months	3	6
Held to maturity, fair value 12 months or longer	677	636
Held to maturity, gross unrealized losses 12 months or longer	15	24
Held to maturity, fair value total	963	2,117
Held to maturity, gross unrealized losses total	18	30
State and political subdivisions
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	714	206
Available for sale, gross unrealized losses less than 12 months	9	1
Available for sale, fair value 12 months or longer	508	658
Available for sale, gross unrealized losses 12 months or longer	14	26
Available for sale, fair value total	1,222	864
Available for sale, gross unrealized losses total	23	27
Collateralized mortgage obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	397	1,511
Available for sale, gross unrealized losses less than 12 months	3	14
Available for sale, fair value 12 months or longer	219	217
Available for sale, gross unrealized losses 12 months or longer	5	8
Available for sale, fair value total	616	1,728
Available for sale, gross unrealized losses total	8	22
Held to maturity, fair value less than 12 months	521	634
Held-to-maturity, gross, less than 12 months	4	9
Held to maturity, fair value 12 months or longer	196	537
Held to maturity, gross unrealized losses 12 months or longer	9	20
Held to maturity, fair value total	717	1,171
Held to maturity, gross unrealized losses total	13	29
Other U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	133	475
Available for sale, gross unrealized losses less than 12 months	0	9
Available for sale, fair value 12 months or longer	157	178
Available for sale, gross unrealized losses 12 months or longer	7	9
Available for sale, fair value total	290	653
Available for sale, gross unrealized losses total	7	18
U.S. equity securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	0	0
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	5	5
Available for sale, gross unrealized losses 12 months or longer	2	3
Available for sale, fair value total	5	5
Available for sale, gross unrealized losses total	2	$ 3
Non-U.S. equity securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	0
Available for sale, gross unrealized losses less than 12 months	0
Available for sale, fair value 12 months or longer	1
Available for sale, gross unrealized losses 12 months or longer	0
Available for sale, fair value total	1
Available for sale, gross unrealized losses total	$ 0

Investment Securities - Sched59

Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	$ 13,136
Available for sale, 1 to 5 Years	22,213
Available for sale, 6 to 10 Years	15,832
Available for sale, over 10 Years	19,918
Available-for-sale, fair value	71,099
Held to maturity, under 1 Year	1,066
Held to maturity, 1 to 5 Years	16,856
Held to maturity, 6 to 10 Years	3,555
Held to maturity, over 10 Years	6,891
Held to maturity, amortized cost	28,368	$ 29,952
US Treasury and federal agencies, direct obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	3,504
Available for sale, 1 to 5 Years	1,250
Available for sale, 6 to 10 Years	146
Available for sale, over 10 Years	402
Available-for-sale, fair value	5,302
Held to maturity, under 1 Year	0
Held to maturity, 1 to 5 Years	14,732
Held to maturity, 6 to 10 Years	2,745
Held to maturity, over 10 Years	76
Held to maturity, amortized cost	17,553	20,878
US Treasury and federal agencies, mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	61
Available for sale, 1 to 5 Years	1,940
Available for sale, 6 to 10 Years	4,343
Available for sale, over 10 Years	11,651
Available-for-sale, fair value	17,995
Held to maturity, under 1 Year	1
Held to maturity, 1 to 5 Years	8
Held to maturity, 6 to 10 Years	167
Held to maturity, over 10 Years	4,104
Held to maturity, amortized cost	4,280	610
Asset-backed securities, student loans
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	894
Available for sale, 1 to 5 Years	3,376
Available for sale, 6 to 10 Years	1,132
Available for sale, over 10 Years	1,905
Available-for-sale, fair value	7,307
Held to maturity, under 1 Year	89
Held to maturity, 1 to 5 Years	175
Held to maturity, 6 to 10 Years	230
Held to maturity, over 10 Years	946
Held to maturity, amortized cost	1,440	1,592
Asset-backed securities, credit cards
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	4
Available for sale, 1 to 5 Years	1,068
Available for sale, 6 to 10 Years	303
Available for sale, over 10 Years	0
Available-for-sale, fair value	1,375
Held to maturity, under 1 Year	98
Held to maturity, 1 to 5 Years	799
Held to maturity, 6 to 10 Years	0
Held to maturity, over 10 Years	0
Held to maturity, amortized cost	897	897
Asset-backed securities, sub-prime
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	3
Available for sale, 1 to 5 Years	2
Available for sale, 6 to 10 Years	2
Available for sale, over 10 Years	347
Available-for-sale, fair value	354
Asset-backed securities, other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	3
Available for sale, 1 to 5 Years	84
Available for sale, 6 to 10 Years	1,036
Available for sale, over 10 Years	150
Available-for-sale, fair value	1,273
Held to maturity, under 1 Year	13
Held to maturity, 1 to 5 Years	26
Held to maturity, 6 to 10 Years	34
Held to maturity, over 10 Years	3
Held to maturity, amortized cost	76	366
Total asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	904
Available for sale, 1 to 5 Years	4,530
Available for sale, 6 to 10 Years	2,473
Available for sale, over 10 Years	2,402
Available-for-sale, fair value	10,309
Held to maturity, under 1 Year	200
Held to maturity, 1 to 5 Years	1,000
Held to maturity, 6 to 10 Years	264
Held to maturity, over 10 Years	949
Held to maturity, amortized cost	2,413	2,855
Non-U.S. debt securities, mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	1,239
Available for sale, 1 to 5 Years	3,734
Available for sale, 6 to 10 Years	850
Available for sale, over 10 Years	1,338
Available-for-sale, fair value	7,161
Held to maturity, under 1 Year	368
Held to maturity, 1 to 5 Years	387
Held to maturity, 6 to 10 Years	74
Held to maturity, over 10 Years	752
Held to maturity, amortized cost	1,581	2,202
Non-U.S. debt securities, asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	80
Available for sale, 1 to 5 Years	2,214
Available for sale, 6 to 10 Years	229
Available for sale, over 10 Years	6
Available-for-sale, fair value	2,529
Held to maturity, under 1 Year	145
Held to maturity, 1 to 5 Years	546
Held to maturity, 6 to 10 Years	6
Held to maturity, over 10 Years	0
Held to maturity, amortized cost	697	1,415
Government securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	4,453
Available for sale, 1 to 5 Years	1,319
Available for sale, 6 to 10 Years	212
Available for sale, over 10 Years	0
Available-for-sale, fair value	5,984
Held to maturity, under 1 Year	175
Held to maturity, 1 to 5 Years	113
Held to maturity, 6 to 10 Years	0
Held to maturity, over 10 Years	0
Held to maturity, amortized cost	288	239
Non-U.S. debt securities, other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	1,818
Available for sale, 1 to 5 Years	3,710
Available for sale, 6 to 10 Years	391
Available for sale, over 10 Years	0
Available-for-sale, fair value	5,919
Held to maturity, under 1 Year	74
Held to maturity, 1 to 5 Years	45
Held to maturity, 6 to 10 Years	0
Held to maturity, over 10 Years	0
Held to maturity, amortized cost	119	65
Total non-U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	7,590
Available for sale, 1 to 5 Years	10,977
Available for sale, 6 to 10 Years	1,682
Available for sale, over 10 Years	1,344
Available-for-sale, fair value	21,593
Held to maturity, under 1 Year	762
Held to maturity, 1 to 5 Years	1,091
Held to maturity, 6 to 10 Years	80
Held to maturity, over 10 Years	752
Held to maturity, amortized cost	2,685	3,921
State and political subdivisions
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	460
Available for sale, 1 to 5 Years	2,387
Available for sale, 6 to 10 Years	5,730
Available for sale, over 10 Years	2,179
Available-for-sale, fair value	10,756
Held to maturity, amortized cost	0	1
Collateralized mortgage obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	16
Available for sale, 1 to 5 Years	55
Available for sale, 6 to 10 Years	842
Available for sale, over 10 Years	1,893
Available-for-sale, fair value	2,806
Held to maturity, under 1 Year	103
Held to maturity, 1 to 5 Years	25
Held to maturity, 6 to 10 Years	299
Held to maturity, over 10 Years	1,010
Held to maturity, amortized cost	1,437	$ 1,687
Other U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 Year	601
Available for sale, 1 to 5 Years	1,074
Available for sale, 6 to 10 Years	616
Available for sale, over 10 Years	47
Available-for-sale, fair value	$ 2,338

Investment Securities - Sched60

Investment Securities - Schedule of Credit-Related Loss Activity Recognized In Earnings (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 92	$ 115
Losses for which OTTI was previously recognized	2	1
Previously recognized losses related to securities sold or matured	(26)	(22)
Balance, end of period	$ 68	$ 94

Loans and Leases - Narrative (D

Loans and Leases - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)loan_segmentloan	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)loan
Financing Receivable, Recorded Investment [Line Items]
Number of Loan Segments | loan_segment			2
Aggregate short-duration advances	$ 5,700		$ 5,700		$ 2,620
Loans and leases, allowance for losses	51		51		46
Loans and leases pledged as collateral	1,700		$ 1,700		$ 2,500
Loans modified in troubled debt restructurings | loan			0		0
Provision for loan losses	0	$ 5	$ 8	$ 11
Charge-offs	0	$ 0	(3)	$ 0
Commercial and Financial | Senior Secured Bank Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and leases, allowance for losses	43		$ 43		$ 35
Total Institutional
Financing Receivable, Recorded Investment [Line Items]
Loans more than 90 days past due | loan			0		0
Total Institutional | Senior Secured Bank Loans
Financing Receivable, Recorded Investment [Line Items]
Commercial and financial	$ 3,380		$ 3,380		$ 3,140
Total CRE
Financing Receivable, Recorded Investment [Line Items]
Loans more than 90 days past due | loan			0		0

Loans and Leases - Net Loans (D

Loans and Leases - Net Loans (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 21,502	$ 18,799
Allowance for loan and lease losses	(51)	(46)
Loans and leases, net of allowance for loan and lease losses	21,451	18,753
Total Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	21,475	18,771
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	27	28
U.S. | Total Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment funds	13,647	11,136
Commercial and financial	3,540	4,671
Purchased receivables	74	93
Lease financing	337	337
U.S. | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate	27	28
Non-U.S. | Total Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment funds	3,092	1,678
Commercial and financial	275	278
Purchased receivables	0	0
Lease financing	$ 510	$ 578

Loans and Leases - Recorded Inv

Loans and Leases - Recorded Investment in Each Class of Total Loans and Leases by Credit Quality Indicator (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 21,502	$ 18,799
Investment Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	16,739	12,814
Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,815	4,949
Purchased Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	74	93
Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	847	915
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	27	28
Investment grade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	17,198	15,204
Investment grade | Investment Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	15,828	12,415
Investment grade | Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	422	1,780
Investment grade | Purchased Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	74	93
Investment grade | Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	847	888
Investment grade | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	27	28
Speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	4,286	3,564
Speculative | Investment Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	908	399
Speculative | Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,378	3,138
Speculative | Purchased Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Speculative | Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	27
Speculative | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3	31
Special Mention | Investment Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3	0
Special Mention | Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	31
Special Mention | Purchased Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Special Mention | Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Special Mention | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	$ 0
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	15
Substandard | Investment Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0
Substandard | Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	15
Substandard | Purchased Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0
Substandard | Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0
Substandard | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 0

Loans and Leases - Schedule of

Loans and Leases - Schedule of Allowance for Loan Losses (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 21,502,000,000	$ 18,799,000,000
Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	21,475,000,000	18,771,000,000
Amount of loan losses related to institutional loans individually evaluated for impairment	0	0
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	27,000,000	28,000,000
Collectively Evaluated for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	21,502,000,000	18,799,000,000
Collectively Evaluated for Impairment | Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	21,475,000,000	18,771,000,000
Collectively Evaluated for Impairment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 27,000,000	$ 28,000,000

Loans and Leases - Impaired Loa

Loans and Leases - Impaired Loans (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Amount of loan losses related to institutional loans collectively evaluated for impairment	$ 51	$ 46
CRE—property development—acquired credit-impaired
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	0	0
Unpaid principal balance with no related allowance recorded	34	34
CRE—other—acquired credit-impaired
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	0	0
Unpaid principal balance with no related allowance recorded	22	22
Total CRE
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	0	0
Unpaid principal balance with no related allowance recorded	$ 56	$ 56

Loans and Leases - Schedule o66

Loans and Leases - Schedule of Activity In The Allowance For Loan Losses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 51	$ 43	$ 46	$ 37
Provision for loan losses	0	5	8	11
Charge-offs	0	0	(3)	0
Ending balance	51	$ 48	51	$ 48
Loans and leases, allowance for losses	51		51		$ 46
Commercial and Financial | Senior Secured Bank Loans
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, allowance for losses	43		43		$ 35
Commercial and Financial | Other Loans
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, allowance for losses	$ 8		$ 8

Goodwill and Other Intangible67

Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Goodwill (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 5,671	$ 5,826
Acquisitions	236	0
Divestitures and other reductions	(11)	0
Foreign currency translation	15	(155)
Ending balance	5,911	5,671
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	5,641	5,793
Acquisitions	0	0
Divestitures and other reductions	(11)	0
Foreign currency translation	15	(152)
Ending balance	5,645	5,641
Investment Management
Goodwill [Roll Forward]
Beginning balance	30	33
Acquisitions	236	0
Divestitures and other reductions	0	0
Foreign currency translation	0	(3)
Ending balance	$ 266	$ 30

Goodwill and Other Intangible68

Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			$ 1,768	$ 2,025	$ 2,025
Acquisitions			217		16
Amortization	$ (55)	$ (48)	(153)	(147)	(197)
Foreign currency translation and other, net			17		(76)
Ending balance	1,849		1,849		1,768
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			1,753	1,998	1,998
Acquisitions			0		16
Amortization			(141)		(187)
Foreign currency translation and other, net			17		(74)
Ending balance	1,629		1,629		1,753
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			15	$ 27	27
Acquisitions			217		0
Amortization			(12)		(10)
Foreign currency translation and other, net			0		(2)
Ending balance	$ 220		$ 220		$ 15

Goodwill and Other Intangible69

Goodwill and Other Intangible Assets - Gross Carrying Amount, Accumulated Amortization And Net Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,534	$ 3,300
Accumulated Amortization	(1,685)	(1,532)
Net Carrying Amount	1,849	1,768	$ 2,025
Client relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,703	2,486
Accumulated Amortization	(1,312)	(1,198)
Net Carrying Amount	1,391	1,288
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	673	667
Accumulated Amortization	(273)	(246)
Net Carrying Amount	400	421
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	158	147
Accumulated Amortization	(100)	(88)
Net Carrying Amount	$ 58	$ 59

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other Assets [Abstract]
Collateral deposits, net	$ 24,458	$ 21,465
Derivative instruments, net	3,503	4,777
Bank-owned life insurance	3,137	3,078
Investments in joint ventures and other unconsolidated entities	2,235	2,034
Receivable for securities settlement	598	311
Accounts receivable	454	1,018
Prepaid expenses	363	284
Income taxes receivable	219	154
Deferred tax assets, net of valuation allowance	215	182
Deposits with clearing organizations	138	127
Other	1,000	473
Total	$ 36,320	$ 33,903

Derivative Financial Instrume71

Derivative Financial Instruments - Narrative (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)security	Dec. 31, 2015USD ($)
Derivative [Line Items]
Cash collateral received for derivative instruments	$ 1,700	$ 1,400
Cash collateral provided for derivative instruments	971	1,650
Fair value of derivative liabilities	$ 8,240	$ 11,153
Securities weighted average life	4 years 9 months 20 days	5 years 5 months 10 days
Credit swap agreements
Derivative [Line Items]
Fair value of derivative liabilities	$ 757
Fair value of collateral posted	2
Maximum additional amount of payments related to termination events	$ 755
Interest rate swap | Fair Value Hedges | Senior notes
Derivative [Line Items]
Number of securities | security	8
Interest rate swap | Fair Value Hedges | Subordinated note
Derivative [Line Items]
Number of securities | security	2

Derivative Financial Instrume72

Derivative Financial Instruments - Schedule of Interest Rate Derivatives (Details) - Interest rate swap - Fair Value Hedges	Sep. 30, 2016
Senior notes | 1.35% notes due 2018
Derivative [Line Items]
Fixed interest rate	1.35%
Senior notes | 2.55% notes due 2020
Derivative [Line Items]
Fixed interest rate	2.55%
Senior notes | 1.95% Notes Due 2021
Derivative [Line Items]
Fixed interest rate	1.95%
Senior notes | 4.38% note due 2021
Derivative [Line Items]
Fixed interest rate	4.38%
Senior notes | 3.70% notes due in 2023
Derivative [Line Items]
Fixed interest rate	3.70%
Senior notes | 3.30% notes due 2024
Derivative [Line Items]
Fixed interest rate	3.30%
Senior notes | 3.55% notes due 2025
Derivative [Line Items]
Fixed interest rate	3.55%
Senior notes | 2.65% notes due 2026
Derivative [Line Items]
Fixed interest rate	2.65%
Subordinated note | 4.96% subordinated note due 2018
Derivative [Line Items]
Fixed interest rate	4.96%
Subordinated note | 3.10% subordinated note due 2023
Derivative [Line Items]
Fixed interest rate	3.10%

Derivative Financial Instrume73

Derivative Financial Instruments - Schedule of Outstanding Hedges: (Notional Amount) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Derivatives not designated as hedging instruments | Interest-rate contracts | Swap agreements and forwards
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	$ 0	$ 336
Derivatives not designated as hedging instruments | Interest-rate contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	6,492	2,621
Derivatives not designated as hedging instruments | Foreign exchange contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	37	0
Derivatives not designated as hedging instruments | Foreign exchange contracts | Forward, swap and spot
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	1,313,515	1,274,277
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options purchased
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	131	403
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options written
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	24	404
Derivatives not designated as hedging instruments | Credit derivative contracts | Credit swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	0	141
Derivatives not designated as hedging instruments | Futures Contracts | Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	142	113
Derivatives not designated as hedging instruments | Futures Contracts | Equity
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	76	87
Derivatives not designated as hedging instruments | Other contracts | Stable value contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	27,319	24,583
Derivatives not designated as hedging instruments | Other contracts | Deferred value awards
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	456	320
Derivatives designated as hedging instruments | Interest-rate contracts | Swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	10,276	9,398
Derivatives designated as hedging instruments | Foreign exchange contracts | Forward and swap
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives	$ 4,812	$ 4,515

Derivative Financial Instrume74

Derivative Financial Instruments - Notional Amount of Interest Rate Swap Agreements Designated as Fair Value and Cash Flow Hedges (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)contract	Dec. 31, 2015USD ($)contract
Fair Value Hedges
Derivative [Line Items]
Total	$ 10,276	$ 9,398
Increase in carrying value of long-term debt	376	105
Fair Value Hedges | Investment securities available for sale
Derivative [Line Items]
Investment securities available-for-sale	1,551	1,698
Fair Value Hedges | Long-term debt
Derivative [Line Items]
Long-term debt	$ 8,725	$ 7,700
Interest-rate contracts | Cash Flow Hedges
Derivative [Line Items]
Number of instruments held | contract	0	0

Derivative Financial Instrume75

Derivative Financial Instruments - Contractual and Weighted-Average Interest Rates, Which Include the Effects of Hedges Related to Financial Instruments (Details) - Long-term debt	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Contractual rates	3.37%	3.59%	3.41%	3.60%
Rate including impact of hedges	2.27%	2.35%	2.24%	2.51%

Derivative Financial Instrume76

Derivative Financial Instruments - Schedule of The Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 8,379	$ 11,456
Fair value of derivative liabilities	8,240	11,153
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	8,137	11,316
Fair value of derivative liabilities	7,901	10,868
Interest-rate contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	239	135
Fair value of derivative liabilities	189	182
Derivatives not designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	7,841	10,806
Derivatives not designated as hedging instruments | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	7,903	10,900
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	7,838	10,799
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	7,753	10,795
Derivatives not designated as hedging instruments | Interest-rate contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	2
Derivatives not designated as hedging instruments | Interest-rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	0	2
Derivatives not designated as hedging instruments | Other derivative contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	3	5
Derivatives not designated as hedging instruments | Other derivative contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	150	103
Derivatives designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	538	650
Derivatives designated as hedging instruments | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	337	253
Derivatives designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	299	517
Derivatives designated as hedging instruments | Foreign exchange contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	148	73
Derivatives designated as hedging instruments | Interest-rate contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	239	133
Derivatives designated as hedging instruments | Interest-rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 189	$ 180

Derivative Financial Instrume77

Derivative Financial Instruments - Impact of Derivatives on Consolidated Statement of Income (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ 161	$ 176	$ 469	$ 546
Foreign exchange contracts | Trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	161	177	477	546
Interest-rate contracts | Trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(1)	0	(6)	(1)
Interest-rate contracts | Processing fees and other revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	0	0	1	0
Credit derivative contracts | Trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	0	0	(1)
Other derivative contracts | Trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	1	(1)	(2)	1
Other derivative contracts | Compensation and employee benefits
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ (41)	$ (28)	$ (168)	$ (121)

Derivative Financial Instrume78

Derivative Financial Instruments - Schedule of Differences Between the Gains (Losses) on the Derivative and The Gains (Losses) on the Hedged Item (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Net unrealized loss on available-for-sale securities designated in fair value hedges, net of related taxes	$ 13	$ (16)	$ (9)	$ (9)
Derivatives designated as hedging instruments | Fair Value Hedges
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(32)	64	572	122
Gain (loss) on fair value hedges recognized in earnings	31	(57)	(557)	(115)
Derivatives designated as hedging instruments | Fair Value Hedges | Investment securities available for sale | Foreign exchange contracts | Processing fees and other revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	24	(80)	43	(132)
Gain (loss) on fair value hedges recognized in earnings	(24)	80	(43)	132
Derivatives designated as hedging instruments | Fair Value Hedges | Investment securities available for sale | Interest-rate contracts | Processing fees and other revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	22	(25)	(15)	(13)
Gain (loss) on fair value hedges recognized in earnings	(22)	26	15	14
Derivatives designated as hedging instruments | Fair Value Hedges | Deposits | Foreign exchange contracts | Processing fees and other revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	1	(13)	247	102
Gain (loss) on fair value hedges recognized in earnings	(1)	13	(247)	(102)
Derivatives designated as hedging instruments | Fair Value Hedges | Long-term debt | Interest-rate contracts | Processing fees and other revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(79)	182	297	165
Gain (loss) on fair value hedges recognized in earnings	78	(176)	(282)	(159)
Derivatives designated as hedging instruments | Cash Flow Hedges
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	6	2	17	6
Gain (loss) on derivative recognized in OCI	(1)	40	(293)	81
Gain (loss) on hedges reclassified to income	0	(1)	0	(3)
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign exchange contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI	(1)	40	(293)	81
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign exchange contracts | Net interest revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	6	2	17	6
Gain (loss) on hedges reclassified to income	0	0	0	0
Derivatives designated as hedging instruments | Cash Flow Hedges | Interest-rate contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI	0	0	0	0
Derivatives designated as hedging instruments | Cash Flow Hedges | Interest-rate contracts | Net interest revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	0	0	0	0
Gain (loss) on hedges reclassified to income		(1)	0	(3)
Derivatives designated as hedging instruments | Investment Hedges
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	0	0	0	0
Gain (loss) on derivative recognized in OCI	4	0	55	0
Gain (loss) on hedges reclassified to income	0	0	0	0
Derivatives designated as hedging instruments | Investment Hedges | Foreign exchange contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI	4	0	55	0
Derivatives designated as hedging instruments | Investment Hedges | Foreign exchange contracts | Gains (Losses) related to investment securities, net
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	0	0	0	0
Gain (loss) on hedges reclassified to income	$ 0	$ 0	$ 0	$ 0

Offsetting Arrangements - Narra

Offsetting Arrangements - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting [Abstract]
Fair Value of securities received as collateral that can be resold or repledged	$ 2,260	$ 3,050
Fair Value of securities received as collateral that have been resold or repledged	$ 287	$ 262

Offsetting Arrangements - Asset

Offsetting Arrangements - Assets With Offsetting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	$ 8,379	$ 11,456
Derivatives, gross amounts offset in statement of condition	(4,876)	(6,679)
Derivative, collateral, cash offset	(929)	(776)
Net Amounts of Assets Presented in Statement of Condition	3,503	4,777
Resale agreements and securities borrowing, gross amounts of recognized assets	62,733	62,522
Resale agreements and securities borrowing, gross amounts offset in statement of condition	(36,580)	(38,997)
Net Amounts of Assets Presented in Statement of Condition	26,153	23,525
Total, gross amounts of recognized assets	71,112	73,978
Total, gross amounts offset in statement of condition	(41,456)	(45,676)
Total, net amounts of assets presented in statement of condition	29,656	28,302
Securities purchased under resale agreements	2,442	3,404
Securities borrowed subject to master netting arrangements	23,711	20,121
Foreign exchange contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	8,137	11,316
Derivatives, gross amounts offset in statement of condition	(3,936)	(5,896)
Net Amounts of Assets Presented in Statement of Condition	4,201	5,420
Interest-rate contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	239	135
Derivatives, gross amounts offset in statement of condition	(8)	(5)
Net Amounts of Assets Presented in Statement of Condition	231	130
Other derivative contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	3	5
Derivatives, gross amounts offset in statement of condition	(3)	(2)
Net Amounts of Assets Presented in Statement of Condition	$ 0	$ 3

Offsetting Arrangements - Ass81

Offsetting Arrangements - Assets With Enforceable Netting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting [Abstract]
Derivatives, net amount of assets presented in statement of condition	$ 3,503	$ 4,777
Derivatives, counterparty netting	0	0
Derivatives, cash and securities received	(159)	(405)
Derivatives, net amount	3,344	4,372
Resale agreements and securities borrowing, resale agreements and securities borrowing, net amount of assets presented in statement of condition	26,153	23,525
Resale agreements and securities borrowing, counterparty netting	(120)	(63)
Resale agreements and securities borrowing, cash and securities received	(25,783)	(22,812)
Resale agreements and securities borrowing, net amount	250	650
Total, net amounts of assets presented in statement of condition	29,656	28,302
Total, counterparty netting	(120)	(63)
Total, cash and securities received	(25,942)	(23,217)
Total, net amount	$ 3,594	$ 5,022

Offsetting Arrangements - Liabi

Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	$ 8,240	$ 11,153
Gross amounts offset in statement of condition	(4,678)	(7,021)
Derivative collateral, cash offset	(731)	(1,118)
Net Amounts of Liabilities Presented in Statement of Condition	3,562	4,132
Gross amounts of recognized liabilities	46,363	46,766
Gross amounts offset in statement of condition	(36,580)	(38,997)
Net Amounts of Liabilities Presented in Statement of Condition	9,783	7,769
Gross amounts of recognized liabilities	54,603	57,919
Gross amounts offset in statement of condition	(41,258)	(46,018)
Total, net amount of liabilities presented in statement of condition	13,345	11,901
Securities sold under repurchase agreements	4,364	4,499
Securities lending, fair value, amount not offset against collateral	5,419	3,270
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	7,901	10,868
Gross amounts offset in statement of condition	(3,936)	(5,896)
Net Amounts of Liabilities Presented in Statement of Condition	3,965	4,972
Interest-rate contracts
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	189	182
Gross amounts offset in statement of condition	(8)	(5)
Net Amounts of Liabilities Presented in Statement of Condition	181	177
Other derivative contracts
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	150	103
Gross amounts offset in statement of condition	(3)	(2)
Net Amounts of Liabilities Presented in Statement of Condition	$ 147	$ 101

Offsetting Arrangements - Lia83

Offsetting Arrangements - Liabilities With Enforceable Netting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting [Abstract]
Derivative, net amount of liabilities presented in statement of condition	$ 3,562	$ 4,132
Derivative, counterparty netting	0	0
Derivative, collateral provided	(8)	(64)
Derivative, net amount	3,554	4,068
Repurchase agreements and securities lending, net amount of liabilities presented in statement of condition	9,783	7,769
Repurchase agreements and securities lending, counterparty netting	(120)	(63)
Repurchase agreements and securities lending, collateral provided	(7,461)	(5,287)
Repurchase agreements and securities lending, net amount	2,202	2,419
Total, net amount of liabilities presented in statement of condition	13,345	11,901
Total, counterparty netting	(120)	(63)
Total, collateral provided	(7,469)	(5,351)
Total, net amount	$ 5,756	$ 6,487

Offsetting Arrangements - Repo,

Offsetting Arrangements - Repo, Sec Lending Transactions Maturity By Category (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	$ 35,471	$ 37,259
Securities loaned, gross	10,892	9,507
Securities sold and securities loaned under agreements to repurchase, gross	46,363	46,766
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	35,399	37,157
Securities loaned, gross	9,998	8,505
Securities sold and securities loaned under agreements to repurchase, gross	45,397	45,662
Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	72	102
Securities loaned, gross	0	0
Securities sold and securities loaned under agreements to repurchase, gross	72	102
30 – 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	0	0
Securities loaned, gross	894	1,002
Securities sold and securities loaned under agreements to repurchase, gross	894	1,002
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	35,414	37,162
U.S. Treasury and agency securities | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	35,399	37,157
U.S. Treasury and agency securities | Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	15	5
U.S. Treasury and agency securities | 30 – 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	0	0
Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	63	1
Corporate debt securities | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	63	1
Corporate debt securities | Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	0	0
Corporate debt securities | 30 – 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	0	0
Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	10,420	9,504
Equity securities | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	9,526	8,502
Equity securities | Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	0	0
Equity securities | 30 – 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities loaned, gross	894	1,002
Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	57	97
Securities loaned, gross	409	2
Non-U.S. sovereign debt | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	0	0
Securities loaned, gross	409	2
Non-U.S. sovereign debt | Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	57	97
Securities loaned, gross	0	0
Non-U.S. sovereign debt | 30 – 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase, gross	0	0
Securities loaned, gross	$ 0	$ 0

Commitments and Guarantees - Na

Commitments and Guarantees - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Unfunded commitments to extend credit	$ 21,720	$ 22,580
Unfunded commitments to extend credit, short term	75.00%
Term of unfunded commitment	1 year
Cash collateral provided for securities lending	$ 23,710	20,120
Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Cash collateral received in connection to securities finance activities	$ 5,420	$ 3,270

Commitments and Guarantees - Co

Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Indemnified securities financing	$ 344,191	$ 320,436
Stable value protection	27,319	24,583
Asset purchase agreements	4,989	3,990
Standby letters of credit	$ 3,597	$ 4,700

Commitments and Guarantees - Sc

Commitments and Guarantees - Schedule Of Repurchase Agreements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Fair value of indemnified securities financing	$ 344,191	$ 320,436
Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing	359,107	335,420
Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements	64,982	63,055
Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements	$ 69,031	$ 67,016

Contingencies - Narrative (Deta

Contingencies - Narrative (Details) £ in Millions, $ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2014USD ($)claim	Jan. 31, 2014GBP (£)claim	Dec. 31, 2015USD ($)	Sep. 30, 2016USD ($)claim
Loss Contingencies [Line Items]
Unrecognized tax benefits			$ 63	$ 66
Transition Management
Loss Contingencies [Line Items]
Claims settled | claim	6	6
Litigation reserve				$ 44
Putative Class Action
Loss Contingencies [Line Items]
Number of pending claims | claim				2
Foreign Exchange
Loss Contingencies [Line Items]
Estimate of possible loss				$ 565
GovEx Inquiry
Loss Contingencies [Line Items]
Litigation reserve				1
Legal Reserve | Transition Management
Loss Contingencies [Line Items]
Legal reserves				622
Regulatory Matter | Transition Management
Loss Contingencies [Line Items]
Settlement, amount	$ 37.8	£ 22.9
Cumulative Adjustment for Incorrect Revenue Recognition
Loss Contingencies [Line Items]
Cumulative adjustment to revenue				$ 292
Revenue recognition period			18 years

Contingencies - Schedule of Est

Contingencies - Schedule of Estimated Indirect Foreign Exchange Revenue (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Commitments and Contingencies Disclosure [Abstract]
Estimated indirect foreign exchange revenue	$ 201	$ 280	$ 246	$ 285	$ 248	$ 331	$ 336	$ 369	$ 462

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment securities related to state and political subdivisions	$ 1,760	$ 2,100
Variable interest entity, other short-term borrowings	$ 1,390	$ 1,750
Weighted average life of trusts	4 years 9 months 20 days	5 years 5 months 10 days
Total standby bond-purchase agreement committed to trusts	$ 1,620
Total letters of credit committed to trusts	530
Standby purchase agreements and letters of credit commitments utilized	81
VIE - primary beneficiary
Variable Interest Entity [Line Items]
Assets	409	$ 321
Liabilities	327	228
Potential maximum loss exposure of unconsolidated funds	51
VIE - not primary beneficiary
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	$ 92	$ 75

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Preferred Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Class of Stock [Line Items]
Proceeds from issuance of preferred stock, net	$ 493	$ 742
Series C Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	20,000,000
Liquidation preference per share (USD per share)	$ 25
Series C Preferred Stock
Class of Stock [Line Items]
Ownership Interest per Depositary Share	0.025%
Liquidation preference per share (USD per share)	$ 100,000
Proceeds from issuance of preferred stock, net	$ 488
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	30,000,000
Liquidation preference per share (USD per share)	$ 25
Series D Preferred Stock
Class of Stock [Line Items]
Ownership Interest per Depositary Share	0.025%
Liquidation preference per share (USD per share)	$ 100,000
Proceeds from issuance of preferred stock, net	$ 742
Series E Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	30,000,000
Liquidation preference per share (USD per share)	$ 25
Series E Preferred Stock
Class of Stock [Line Items]
Ownership Interest per Depositary Share	0.025%
Liquidation preference per share (USD per share)	$ 100,000
Proceeds from issuance of preferred stock, net	$ 728
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	750,000
Liquidation preference per share (USD per share)	$ 1,000
Series F Preferred Stock
Class of Stock [Line Items]
Ownership Interest per Depositary Share	1.00%
Liquidation preference per share (USD per share)	$ 100,000
Proceeds from issuance of preferred stock, net	$ 742
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	20,000,000
Liquidation preference per share (USD per share)	$ 25
Series G Preferred Stock
Class of Stock [Line Items]
Ownership Interest per Depositary Share	0.025%
Liquidation preference per share (USD per share)	$ 100,000
Proceeds from issuance of preferred stock, net	$ 493

Stockholders' Equity - Schedu92

Stockholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Preferred stock cash dividend	$ 55	$ 41	$ 137	$ 101
Cash dividends declared (in USD per share)	$ 0.38	$ 0.34	$ 1.06	$ 0.98
Common stock dividends	$ 147	$ 138	$ 414	$ 401
Series C Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,313	$ 1,313	$ 3,939	$ 3,939
Preferred stock cash dividend	$ 6	$ 7	$ 19	$ 20
Series C Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.33	$ 0.33	$ 0.99	$ 0.99
Series D Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,475	$ 1,475	$ 4,425	$ 4,425
Preferred stock cash dividend	$ 11	$ 11	$ 33	$ 33
Series D Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.37	$ 0.37	$ 1.11	$ 1.11
Series E Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,500	$ 1,500	$ 4,500	$ 4,833
Preferred stock cash dividend	$ 11	$ 11	$ 33	$ 36
Series E Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.38	$ 0.38	$ 1.14	$ 1.22
Series F Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 2,625	$ 1,663	$ 5,250	$ 1,663
Preferred stock cash dividend	$ 20	$ 12	$ 40	$ 12
Series F Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 26.25	$ 16.63	$ 52.5	$ 16.63
Series G Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,338	$ 0	$ 2,289	$ 0
Preferred stock cash dividend	$ 7	$ 0	$ 12	$ 0
Series G Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.33	$ 0	$ 0.57	$ 0

Stockholders' Equity - Schedu93

Stockholders' Equity - Schedule of Shares Repurchase Plans (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Stock repurchased during period (shares)	4.7	16.8
Average cost of share acquired (USD per share)		$ 61.68
Shares repurchased during period	$ 325,000,000	$ 1,040,000,000
2015 Program
Equity, Class of Treasury Stock [Line Items]
Amount of common stock authorized for repurchase				$ 1,800,000,000
Stock repurchased during period (shares)	0	12.1
Average cost of share acquired (USD per share)	$ 0	$ 58.83
Shares repurchased during period	$ 0	$ 715,000,000
2016 Program
Equity, Class of Treasury Stock [Line Items]
Amount of common stock authorized for repurchase			$ 1,400,000,000
Stock repurchased during period (shares)	4.7	4.7
Average cost of share acquired (USD per share)	$ 69.03	$ 69.03
Shares repurchased during period	$ 325,000,000	$ 325,000,000

Stockholders' Equity - Schedu94

Stockholders' Equity - Schedule of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Equity [Abstract]
Net unrealized gains on cash flow hedges	$ 80	$ 293
Net unrealized gains (losses) on available-for-sale securities portfolio	542	9
Net unrealized gains (losses) related to reclassified available-for-sale securities	(28)	(28)
Net unrealized gains (losses) on available-for-sale securities	514	(19)
Net unrealized losses on available-for-sale securities designated in fair value hedges	(118)	(109)
Net unrealized gains (losses) on hedges of net investments in non-U.S. subsidiaries	41	(14)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit	(11)	(16)
Net unrealized losses on retirement plans	(182)	(183)
Foreign currency translation	(1,317)	(1,394)
Total	$ (993)	$ (1,442)

Stockholders' Equity - Accumula

Stockholders' Equity - Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 21,103	$ 21,328
Other comprehensive income (loss)	449	(594)
Ending balance	22,150	21,343
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,442)	(507)
Other comprehensive income (loss) before reclassifications	445	(611)
Amounts reclassified into (out of) earnings	4	17
Other comprehensive income (loss)	449	(594)
Ending balance	(993)	(1,101)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	293	276
Other comprehensive income (loss) before reclassifications	(213)	44
Amounts reclassified into (out of) earnings	0	2
Other comprehensive income (loss)	(213)	46
Ending balance	80	322
Net Unrealized Gains (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(128)	192
Other comprehensive income (loss) before reclassifications	520	(112)
Amounts reclassified into (out of) earnings	4	(3)
Other comprehensive income (loss)	524	(115)
Ending balance	396	77
Net Unrealized Losses on Hedges of Net Investments in Non-U.S. Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(14)	(14)
Other comprehensive income (loss) before reclassifications	55	0
Amounts reclassified into (out of) earnings	0	0
Other comprehensive income (loss)	55	0
Ending balance	41	(14)
Other-Than-Temporary Impairment on Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(16)	(29)
Other comprehensive income (loss) before reclassifications	6	12
Amounts reclassified into (out of) earnings	(1)	(1)
Other comprehensive income (loss)	5	11
Ending balance	(11)	(18)
Net Unrealized Losses on Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(183)	(272)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified into (out of) earnings	1	19
Other comprehensive income (loss)	1	19
Ending balance	(182)	(253)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,394)	(660)
Other comprehensive income (loss) before reclassifications	77	(555)
Amounts reclassified into (out of) earnings	0	0
Other comprehensive income (loss)	77	(555)
Ending balance	$ (1,317)	$ (1,215)

Stockholders' Equity - Adjustme

Stockholders' Equity - Adjustments to Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Class of Stock [Line Items]
Interest-rate contracts, net of related taxes of $0 and $1, respectively	$ 537	$ 513	$ 1,570	$ 1,594
Reclassification out of Accumulated Other Comprehensive Income
Class of Stock [Line Items]
Total reclassifications in to (out of) AOCI	1	4	4	17
Reclassification out of Accumulated Other Comprehensive Income | Net Unrealized Gains (Losses) on Cash Flow Hedges
Class of Stock [Line Items]
Tax on derivatives qualifying as hedges			0	1
Reclassification out of Accumulated Other Comprehensive Income | Net Unrealized Gains (Losses) on Cash Flow Hedges | Interest-rate contracts
Class of Stock [Line Items]
Interest-rate contracts, net of related taxes of $0 and $1, respectively	0	1	0	2
Reclassification out of Accumulated Other Comprehensive Income | Net Unrealized Gains (Losses) on Available-for-Sale Securities
Class of Stock [Line Items]
Net realized gains from sales of available-for-sale securities, net of related taxes of $0, ($1), ($1), and ($1), respectively			4	(3)
Tax on investments, excluding OTTI	(2)	0	(3)	1
Reclassification out of Accumulated Other Comprehensive Income | Net Unrealized Gains (Losses) on Available-for-Sale Securities | Securities available for sale
Class of Stock [Line Items]
Net realized gains from sales of available-for-sale securities, net of related taxes of $0, ($1), ($1), and ($1), respectively	2	(1)
Reclassification out of Accumulated Other Comprehensive Income | Other-Than-Temporary Impairment on Securities
Class of Stock [Line Items]
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related tax benefit of $1 and $0, respectively			(1)	(1)
Reclassification out of Accumulated Other Comprehensive Income | Other-Than-Temporary Impairment on Securities | Securities held-to-maturity
Class of Stock [Line Items]
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related tax benefit of $1 and $0, respectively	0	0
Reclassification out of Accumulated Other Comprehensive Income | Retirement Plans
Class of Stock [Line Items]
Amortization of actuarial losses, net of related taxes of ($1), $8, ($3), and $1, respectively	(1)	4	1	19
Tax on reclassification adjustment for pension and other postretirement	$ 1	$ (3)	$ (2)	$ (4)

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Retained earnings	$ 17,047	$ 16,049
Capital ratio: required common equity tier 1 capital	5.50%	4.50%
Capital ratio: required tier 1 capital	7.00%	6.00%
Capital ratio: required total capital	9.00%	8.00%
Capital ratio: required tier 1 leverage	4.00%	4.00%
Percentage of goodwill and other intangible assets net of associated deferred tax liabilities allocated to other intangible assets	60.00%	40.00%
Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 10,282	$ 10,250
Retained earnings	17,047	16,049
Accumulated other comprehensive income (loss)	(1,107)	(1,422)
Treasury stock, at cost	(7,382)	(6,457)
Total	18,840	18,420
Goodwill and other intangible assets, net of associated deferred tax liabilities	(6,483)	(5,927)
Other adjustments	(88)	(60)
Common equity tier 1 capital	12,269	12,433
Preferred stock	3,196	2,703
Trust preferred capital securities subject to phase-out from tier 1 capital	0	237
Other adjustments	(58)	(109)
Tier 1 capital	15,407	15,264
Qualifying subordinated long-term debt	1,259	1,358
Trust preferred capital securities phased out of tier 1 capital	890	713
ALLL and other	3	12
Other adjustments	1	2
Total capital	17,560	17,349
Credit risk	51,916	51,733
Operational risk	44,643	43,882
Market risk	3,177	3,937
Total risk-weighted assets	99,736	99,552
Adjusted quarterly average assets	$ 226,093	$ 221,880
Common equity tier 1 capital	12.30%	12.50%
Tier 1 capital	15.40%	15.30%
Total capital	17.60%	17.40%
Tier 1 leveraged	6.80%	6.90%
Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 10,282	$ 10,250
Retained earnings	17,047	16,049
Accumulated other comprehensive income (loss)	(1,107)	(1,422)
Treasury stock, at cost	(7,382)	(6,457)
Total	18,840	18,420
Goodwill and other intangible assets, net of associated deferred tax liabilities	(6,483)	(5,927)
Other adjustments	(88)	(60)
Common equity tier 1 capital	12,269	12,433
Preferred stock	3,196	2,703
Trust preferred capital securities subject to phase-out from tier 1 capital	0	237
Other adjustments	(58)	(109)
Tier 1 capital	15,407	15,264
Qualifying subordinated long-term debt	1,259	1,358
Trust preferred capital securities phased out of tier 1 capital	890	713
ALLL and other	75	66
Other adjustments	1	2
Total capital	17,632	17,403
Credit risk	96,668	93,515
Market risk	1,706	2,378
Total risk-weighted assets	98,374	95,893
Adjusted quarterly average assets	$ 226,093	$ 221,880
Common equity tier 1 capital	12.50%	13.00%
Tier 1 capital	15.70%	15.90%
Total capital	17.90%	18.10%
Tier 1 leveraged	6.80%	6.90%
State Street Bank | Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 11,339	$ 10,938
Retained earnings	11,593	10,655
Accumulated other comprehensive income (loss)	(880)	(1,230)
Treasury stock, at cost	0	0
Total	22,052	20,363
Goodwill and other intangible assets, net of associated deferred tax liabilities	(6,152)	(5,631)
Other adjustments	(83)	(85)
Common equity tier 1 capital	15,817	14,647
Preferred stock	0	0
Trust preferred capital securities subject to phase-out from tier 1 capital	0	0
Other adjustments	0	0
Tier 1 capital	15,817	14,647
Qualifying subordinated long-term debt	1,270	1,371
Trust preferred capital securities phased out of tier 1 capital	0	0
ALLL and other	4	8
Other adjustments	0	0
Total capital	17,091	16,026
Credit risk	47,609	47,677
Operational risk	44,115	43,324
Market risk	3,177	3,939
Total risk-weighted assets	94,901	94,940
Adjusted quarterly average assets	$ 221,508	$ 217,358
Common equity tier 1 capital	16.70%	15.40%
Tier 1 capital	16.70%	15.40%
Total capital	18.00%	16.90%
Tier 1 leveraged	7.10%	6.70%
State Street Bank | Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 11,339	$ 10,938
Retained earnings	11,593	10,655
Accumulated other comprehensive income (loss)	(880)	(1,230)
Treasury stock, at cost	0	0
Total	22,052	20,363
Goodwill and other intangible assets, net of associated deferred tax liabilities	(6,152)	(5,631)
Other adjustments	(83)	(85)
Common equity tier 1 capital	15,817	14,647
Preferred stock	0	0
Trust preferred capital securities subject to phase-out from tier 1 capital	0	0
Other adjustments	0	0
Tier 1 capital	15,817	14,647
Qualifying subordinated long-term debt	1,270	1,371
Trust preferred capital securities phased out of tier 1 capital	0	0
ALLL and other	75	66
Other adjustments	0	0
Total capital	17,162	16,084
Credit risk	92,165	89,164
Market risk	1,706	2,378
Total risk-weighted assets	93,871	91,542
Adjusted quarterly average assets	$ 221,508	$ 217,358
Common equity tier 1 capital	16.80%	16.00%
Tier 1 capital	16.80%	16.00%
Total capital	18.30%	17.60%
Tier 1 leveraged	7.10%	6.70%

Net Interest Revenue - Componen

Net Interest Revenue - Components of Interest Revenue and Interest Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Banking and Thrift [Abstract]
Deposits with banks	$ 29	$ 53	$ 101	$ 161
U.S. Treasury and federal agencies	200	178	620	537
State and political subdivisions	55	57	162	173
Other investments	208	227	580	733
Securities purchased under resale agreements	40	18	112	45
Trading account assets	0	0	1	0
Loans and leases	97	79	281	229
Other interest-earning assets	18	2	39	7
Total interest revenue	647	614	1,896	1,885
Deposits	20	28	73	67
Securities sold under repurchase agreements	0	0	1	0
Short-term borrowings	2	1	4	5
Long-term debt	68	62	191	185
Other interest-bearing liabilities	20	10	57	34
Total interest expense	110	101	326	291
Net interest revenue	$ 537	$ 513	$ 1,570	$ 1,594

Expenses - Schedule of Expenses

Expenses - Schedule of Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Expenses [Abstract]
Litigation	$ 47	$ (7)	$ 47	$ 396
Insurance	31	33	74	98
Regulatory fees and assessments	28	31	65	90
Securities processing	10	40	20	75
Other	71	44	231	186
Total other expenses	$ 187	$ 141	$ 437	$ 845

Expenses - Narrative (Details)

Expenses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Acquisition related costs	$ 33			$ 7	$ 47	$ 15
State Street Beacon
Restructuring Cost and Reserve [Line Items]
Accruals for State Street Beacon	10	$ 13	$ 97		120
State Street Beacon | Employee Related Costs
Restructuring Cost and Reserve [Line Items]
Accruals for State Street Beacon	8	$ (1)	$ 86
State Street Beacon | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	300				300
State Street Beacon | Minimum | Employee Related Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	250				250
State Street Beacon | Minimum | Information Technology and Real Estate
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	50				50
State Street Beacon | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	400				400
State Street Beacon | Maximum | Employee Related Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	300				300
State Street Beacon | Maximum | Information Technology and Real Estate
Restructuring Cost and Reserve [Line Items]
Expected restructuring cost	100				$ 100
GEAM
Restructuring Cost and Reserve [Line Items]
Acquisition related costs	$ 29

Expenses - Restructuring Reserv

Expenses - Restructuring Reserve (Details) - State Street Beacon - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning balance	$ 82	$ 108	$ 23	$ 23
Accruals for State Street Beacon	10	13	97	120
Payments and Other Adjustments	(18)	(39)	(12)
Ending balance	74	82	108	74
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	55	91	9	9
Accruals for State Street Beacon	8	(1)	86
Payments and Other Adjustments	(14)	(35)	(4)
Ending balance	49	55	91	49
Real Estate Consolidation
Restructuring Reserve [Roll Forward]
Beginning balance	22	10	11	11
Accruals for State Street Beacon	3	15	0
Payments and Other Adjustments	(3)	(3)	(1)
Ending balance	22	22	10	22
Asset and Other Write-offs
Restructuring Reserve [Roll Forward]
Beginning balance	5	7	3	3
Accruals for State Street Beacon	(1)	(1)	11
Payments and Other Adjustments	(1)	(1)	(7)
Ending balance	$ 3	$ 5	$ 7	$ 3

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net income	$ 563	$ 581	$ 1,550	$ 1,404
Preferred stock dividends	(55)	(42)	(137)	(102)
Dividends and undistributed earnings allocated to participating securities	(1)	0	(2)	(1)
Net income available to common shareholders	$ 507	$ 539	$ 1,411	$ 1,301
Basic average common shares	388,358	406,612	393,959	409,816
Effect of dilutive securities: common stock options and common stock awards (in shares)	4,854	5,555	4,454	5,956
Diluted average common shares	393,212	412,167	398,413	415,772
Anti-dilutive securities (in shares)	2,166	619	3,027	675
Earnings per Common Share:
Basic (in USD per share)	$ 1.31	$ 1.33	$ 3.58	$ 3.18
Diluted (in USD per share)	$ 1.29	$ 1.31	$ 3.54	$ 3.13

Line of Business Information -

Line of Business Information - Narrative (Details)	9 Months Ended
	Sep. 30, 2016line_of_business
Segment Reporting [Abstract]
Number of lines of business	2

Line of Business Information104

Line of Business Information - Summary of Line of Business (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Servicing fees	$ 1,303	$ 1,289	$ 3,784	$ 3,876
Management fees	368	287	931	892
Trading services	267	294	806	899
Securities finance	136	113	426	369
Processing fees and other	5	120	155	198
Total fee revenue	2,079	2,103	6,102	6,234
Net interest revenue	537	513	1,570	1,594
Gains (losses) related to investment securities, net	4	(2)	5	(6)
Total revenue	2,620	2,614	7,677	7,822
Provision for loan losses	0	5	8	11
Total expenses	1,984	1,962	5,894	6,193
Income before income tax expense	$ 636	$ 647	$ 1,775	$ 1,618
Pre-tax margin	24.00%	25.00%	23.00%	21.00%
Operating Segments | Investment Servicing
Segment Reporting Information [Line Items]
Servicing fees	$ 1,303	$ 1,289	$ 3,784	$ 3,876
Management fees	0	0	0	0
Trading services	254	283	771	869
Securities finance	136	113	426	369
Processing fees and other	6	131	153	212
Total fee revenue	1,699	1,816	5,134	5,326
Net interest revenue	536	514	1,567	1,593
Gains (losses) related to investment securities, net	4	(2)	5	(6)
Total revenue	2,239	2,328	6,706	6,913
Provision for loan losses	0	5	8	11
Total expenses	1,634	1,673	4,920	5,389
Income before income tax expense	$ 605	$ 650	$ 1,778	$ 1,513
Pre-tax margin	27.00%	28.00%	27.00%	22.00%
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0	$ 0	$ 0
Management fees	368	287	931	892
Trading services	13	11	35	30
Securities finance	0	0	0	0
Processing fees and other	(1)	(11)	2	(14)
Total fee revenue	380	287	968	908
Net interest revenue	1	(1)	3	1
Gains (losses) related to investment securities, net	0	0	0	0
Total revenue	381	286	971	909
Provision for loan losses	0	0	0	0
Total expenses	317	204	817	711
Income before income tax expense	$ 64	$ 82	$ 154	$ 198
Pre-tax margin	17.00%	29.00%	16.00%	22.00%
Other
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0	$ 0	$ 0
Management fees	0	0	0	0
Trading services	0	0	0	0
Securities finance	0	0	0	0
Processing fees and other	0	0	0	0
Total fee revenue	0	0	0	0
Net interest revenue	0	0	0	0
Gains (losses) related to investment securities, net	0	0	0	0
Total revenue	0	0	0	0
Provision for loan losses	0	0	0	0
Total expenses	33	85	157	93
Income before income tax expense	$ (33)	$ (85)	$ (157)	$ (93)

Non-U.S. Activities - Schedule

Non-U.S. Activities - Schedule Of Results From Non-U.S. Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 2,620	$ 2,614	$ 7,677	$ 7,822
Income before income taxes	636	647	1,775	1,618
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	1,117	1,088	3,278	3,385
Income before income taxes	314	255	835	946
U.S.
Segment Reporting Information [Line Items]
Total revenue	1,503	1,526	4,399	4,437
Income before income taxes	$ 322	$ 392	$ 940	$ 672

Non-U.S. Activities - Narrative

Non-U.S. Activities - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Segment Reporting Information [Line Items]
Assets	$ 256,140	$ 245,155
Non-U.S.
Segment Reporting Information [Line Items]
Assets	$ 86,700		$ 63,300