Flagstar Bancorp (FBC) 10-Q 10 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 08, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	FLAGSTAR BANCORP INC
Entity Central Index Key	0001033012
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		56,480,946

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash	$ 268	$ 260
Interest-earning deposits	122	148
Total cash and cash equivalents	390	408
Investment securities available-for-sale	2,142	2,142
Investment securities held-to-maturity	683	703
Loans held-for-sale ($3,846 and $3,732 measured at fair value, respectively)	3,874	3,869
Loans held-for-investment ($10 and $10 measured at fair value, respectively)	9,936	9,088
Loans with government guarantees	470	392
Less: allowance for loan losses	(127)	(128)
Total loans held-for-investment and loans with government guarantees, net	10,279	9,352
Mortgage servicing rights	278	290
Net deferred tax asset	90	103
Federal Home Loan Bank stock	303	303
Premises and equipment, net	414	390
Goodwill and intangible assets	182	190
Other assets	810	781
Total assets	19,445	18,531
Liabilities and Stockholders’ Equity
Noninterest bearing deposits	4,016	2,989
Interest bearing deposits	9,437	9,391
Total deposits	13,453	12,380
Short-term Federal Home Loan Bank advances and other	3,101	3,244
Long-term Federal Home Loan Bank advances	250	150
Other long-term debt	495	495
Other liabilities ($60 and $60 measured at fair value, respectively)	572	692
Total liabilities	17,871	16,961
Stockholders’ Equity
Common stock $0.01 par value, 80,000,000 and 80,000,000 shares authorized; 56,480,086 and 57,749,464 shares issued and outstanding, respectively	1	1
Additional paid in capital	1,476	1,522
Accumulated other comprehensive (loss) income	(31)	(47)
Retained earnings	128	94
Total stockholders’ equity	1,574	1,570
Total liabilities and stockholders’ equity	$ 19,445	$ 18,531

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Loans held-for-sale, fair value	$ 3,846	$ 3,732
Loans held-for-investment, fair value	10	10
Liabilities and Stockholders’ Equity
Other liabilities, fair value	$ 60	$ 60
Stockholders' Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	56,480,086	57,749,464
Common stock, shares outstanding (in shares)	56,480,086	57,749,464

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest Income
Loans	$ 155	$ 130
Investment securities	24	22
Interest-earning deposits and other	1	0
Total interest income	180	152
Interest Expense
Deposits	29	17
Short-term Federal Home Loan Bank advances and other	17	15
Long-term Federal Home Loan Bank advances	1	7
Other long-term debt	7	7
Total interest expense	54	46
Net interest income	126	106
Provision (benefit) for loan losses	0	0
Net interest income after provision (benefit) for loan losses	126	106
Noninterest Income
Net gain on loan sales	49	60
Loan fees and charges	17	20
Net return on mortgage servicing rights	6	4
Loan administration income	11	5
Deposit fees and charges	8	5
Other noninterest income	18	17
Total noninterest income	109	111
Noninterest Expense
Compensation and benefits	87	80
Occupancy and equipment	38	30
Commissions	13	18
Loan processing expense	17	14
Legal and professional expense	6	6
Federal insurance premiums	4	6
Intangible asset amortization	4	0
Other noninterest expense	22	19
Total noninterest expense	191	173
Income before income taxes	44	44
Provision for income taxes	8	9
Net income	$ 36	$ 35
Net income per share
Basic (in dollars per share)	$ 0.64	$ 0.61
Diluted (in dollars per share)	$ 0.63	$ 0.60
Weighted average shares outstanding
Basic (in shares)	56,897,799	57,356,654
Diluted (in shares)	57,590,272	58,314,385
Cash dividends declared and paid (in dollars per share)	$ 0.04

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 36	$ 35
Other comprehensive income (loss), net of tax
Investment securities	16	(29)
Derivatives and hedging activities	0	15
Other comprehensive income (loss), net of tax	16	(14)
Comprehensive income	$ 52	$ 21

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions		Total	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Beginning balance (in shares) at Dec. 31, 2017			57,321,228
Beginning balance at Dec. 31, 2017		$ 1,399	$ 1	$ 1,512	$ (16)	$ (98)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		35				35
Total other comprehensive income		(9)			(9)
Shares issued from Employee Stock Purchase Plan (in shares)			36,195
Reclassification of certain income tax effects	[1]				(5)	5
Stock-based compensation (in shares)			42,570
Stock-based compensation		2		2
Ending balance (in shares) at Mar. 31, 2018			57,399,993
Ending balance at Mar. 31, 2018		1,427	$ 1	1,514	(30)	(58)
Beginning balance (in shares) at Dec. 31, 2018			57,749,464
Beginning balance at Dec. 31, 2018		1,570	$ 1	1,522	(47)	94
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		36				36
Total other comprehensive income		16			16
Shares issued from Employee Stock Purchase Plan (in shares)			32,878
Shares issued from Employee Stock Purchase Plan				0
Stock-based compensation (in shares)			27,401
Stock-based compensation		4		4
Dividends declared and paid		(2)				(2)
Repurchase of shares (in shares)	[2]		(1,329,657)
Repurchase of shares (2)	[2]	(50)		(50)
Ending balance (in shares) at Mar. 31, 2019			56,480,086
Ending balance at Mar. 31, 2019		$ 1,574	$ 1	$ 1,476	$ (31)	$ 128
[1]	Income tax effects of the Tax Cuts and Jobs Act are reclassified from AOCI to retained earnings due to the adoption of ASU 2018-02.
[2]	For further information, see Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical)	3 Months Ended
	Mar. 31, 2019$ / shares
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$ 0.04
Dividends paid (in dollars per share)	$ 0.04

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net cash used in operating activities		$ (4,716)	$ (6,220)
Investing Activities
Proceeds from sale of AFS securities including loans that have been securitized		4,501	5,730
Collection of principal on investment securities AFS		38	53
Purchase of investment securities AFS and other		(16)	(4)
Collection of principal on investment securities HTM		21	24
Proceeds received from the sale of LHFI		105	0
Net origination, purchase, and principal repayments of LHFI		(845)	139
Acquisition of premises and equipment, net of proceeds		(18)	(15)
Proceeds from the sale of MSRs		41	136
Other, net		(4)	(7)
Net cash provided by investing activities		3,823	6,056
Financing Activities
Net change in deposit accounts		1,073	439
Net change in short-term FHLB borrowings and other short-term debt		(141)	(107)
Proceeds from increases in FHLB long-term advances and other debt		100	200
Repayment of FHLB long-term advances		0	(325)
Net receipt of payments of loans serviced for others		(104)	(9)
Accelerated share repurchase		(50)	0
Dividends declared and paid		(2)	0
Other		3	3
Net cash provided by financing activities		879	201
Net increase in cash, cash equivalents and restricted cash	[1]	(14)	37
Beginning cash, cash equivalents and restricted cash	[1]	432	223
Ending cash, cash equivalents and restricted cash	[1]	418	260
Supplemental disclosure of cash flow information
Non-cash reclassification of investment securities HTM to AFS		0	144
Non-cash reclassification of loans originated LHFI to LHFS		0	1
Non-cash reclassification of LHFS to AFS securities		4,501	5,730
MSRs resulting from sale or securitization of loans		67	84
Operating section supplemental disclosures
Cash proceeds from sales of LHFS		832	1,626
Origination, premium paid and purchase of LHFS, net of principal repayments		$ (5,479)	$ (7,882)
[1]	For further information on restricted cash, see Note 9 - Derivatives.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying financial statements of Flagstar Bancorp, Inc. ("Flagstar," or the "Company"), including its wholly owned principal subsidiary, Flagstar Bank, FSB (the "Bank"), have been prepared using U.S. GAAP for interim financial statements. Where we say "we," "us," "our," the "Company," "Bancorp" or "Flagstar," we usually mean Flagstar Bancorp, Inc. However, in some cases, a reference to "we," "us," "our," the "Company" or "Flagstar" will include the Bank. These consolidated financial statements do not include all of the information and footnotes required by GAAP for a full year presentation and certain disclosures have been condensed or omitted in accordance with rules and regulations of the SEC. These interim financial statements are unaudited and include, in our opinion, all adjustments necessary for a fair statement of the results for the periods indicated, which are not necessarily indicative of results which may be expected for the full year. These consolidated financial statements and notes should be read in conjunction with the consolidated financial statements and footnotes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2018 , which is available on our website, flagstar.com, and on the SEC website, at sec.gov. Certain prior period amounts have been reclassified to conform to the current period presentation.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Wells Fargo Branch Acquisition On November 30, 2018 we closed on the purchase of 52 Wells Fargo branches located in Indiana, Michigan, Wisconsin and Ohio. These branches provide us with high-quality, low-cost deposits, allowing for balance sheet growth and further expansion of our banking footprint. The following table summarizes the preliminary allocation of the purchase price to the fair value of assets acquired and liabilities assumed as of the acquisition date. We deem the initial valuation of the assets and liabilities to be provisional and have left the measurement period open. These fair values may be adjusted in a future period, not to exceed one year after the acquisition date, to reflect new facts and circumstances which existed as of the acquisition date. November 30, 2018 (Dollars in millions) Assets acquired: Cash $ 9 Loans 107 Core deposit intangible (CDI) 60 Other assets 26 Total assets 202 Liabilities assumed: Deposits 1,761 Total liabilities 1,761 Fair value of net assets acquired (1,559 ) Cash consideration received (1,501 ) Goodwill $ 58 As a result of the transaction, we recognized $58 million of goodwill, which was calculated as the excess of the consideration exchanged and the liabilities assumed as compared to the fair value of the identifiable net assets acquired. The goodwill was assigned to our Community Banking segment and is expected to be deductible for tax purposes. The CDI represents the value of the relationships with deposit customers and was measured using the income method using a discounted cash flow methodology which gave consideration to the attrition rates, alternative cost of funds, net maintenance cost, and other costs associated with the deposit base. The CDI will be amortized over its estimated useful life of approximately 10 years utilizing an accelerated method. Acquisition costs related to the Wells Fargo branch acquisition were expensed as incurred and amounted to $1 million and $15 million during the three months ended March 31, 2019 and year ended December 31, 2018 , respectively. These costs were recorded in noninterest expense in the Consolidated Statement of Operations and primarily included, integration costs, marketing, legal and consulting fees. The following table presents unaudited pro forma information as if the acquisition of the Wells Fargo branches had occurred on January 1, 2017. This pro forma information includes certain adjustments and assumptions, including but not limited to, reclassifications from 2018 net income to 2017 net income related to the acquisition-related expenses of $16 million and hedging gains of $29 million . The pro forma information is not necessarily indicative of the results of operations that would have occurred had the transaction been completed on the assumed date. For the Year Ended 2018 2017 (Dollars in millions) Net interest income $ 540 $ 482 Net income $ 196 $ 82 Other 2018 Acquisitions On March 12, 2018, the Company closed on the purchase of the mortgage loan warehouse business from Santander Bank, adding $499 million in outstanding warehouse draws and $1.7 billion in commitments. On March 19, 2018, the Company closed on the Desert Community Bank branch acquisition, adding $614 million in deposits and $59 million in loans. Together, these acquisitions increased goodwill and intangible assets by $51 million .

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table presents our investment securities: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in millions) March 31, 2019 Available-for-sale securities Agency - Commercial $ 1,404 $ 6 $ (34 ) $ 1,376 Agency - Residential 664 — (15 ) 649 Corporate debt obligations 53 — — 53 Municipal obligations 32 — — 32 Other MBS 31 — — 31 Certificate of deposits 1 — — 1 Total available-for-sale securities (1) $ 2,185 $ 6 $ (49 ) $ 2,142 Held-to-maturity securities Agency - Commercial $ 339 $ — $ (13 ) $ 326 Agency - Residential 344 — (4 ) 340 Total held-to-maturity securities (1) $ 683 $ — $ (17 ) $ 666 December 31, 2018 Available-for-sale securities Agency - Commercial $ 1,413 $ 4 $ (43 ) $ 1,374 Agency - Residential 686 — (24 ) 662 Corporate debt obligations 41 — — 41 Municipal obligations 33 — (1 ) 32 Other MBS 32 — — 32 Certificate of Deposits 1 — — 1 Total available-for-sale securities (1) $ 2,206 $ 4 $ (68 ) $ 2,142 Held-to-maturity securities Agency - Commercial $ 349 $ — $ (13 ) $ 336 Agency - Residential 354 — (9 ) 345 Total held-to-maturity securities (1) $ 703 $ — $ (22 ) $ 681 (1) There were no securities of a single issuer, which are not governmental or government-sponsored, that exceeded 10 percent of stockholders’ equity at March 31, 2019 or December 31, 2018 . We evaluate AFS and HTM investment securities for OTTI on a quarterly basis. An OTTI is considered to have occurred when the fair value of a debt security is below its amortized costs and we (1) have the intent to sell the security, (2) will more likely than not be required to sell the security before recovery of its amortized cost, or (3) do not expect to recover the entire amortized cost basis of the security. Investments that have an OTTI are written down through a charge to earnings for the amount representing the credit loss on the security. Gains and losses related to all other factors are recognized in other comprehensive income (loss). Agency securities, which are either explicitly or implicitly backed by the federal government, comprised 96 percent of our total securities at March 31, 2019 . This factor is considered when evaluating our investment securities for OTTI. During the three months ended March 31, 2019 and March 31, 2018 , we had no OTTI. Available-for-sale securities Securities available-for-sale are carried at fair value. Unrealized gains and losses on AFS securities, to the extent they are temporary in nature, are reported as a component of other comprehensive income We purchased $16 million of AFS securities, which were comprised of U.S. government sponsored agency MBS, certificate of deposits, and corporate debt obligations during the three months ended March 31, 2019 . We purchased $4 million of AFS securities, which included U.S. government sponsored agency MBS, corporate debt obligations, and municipal obligations during the three months ended March 31, 2018 . There were less than $1 million in sales of AFS securities during the three months ended March 31, 2019 , which did not include those related to mortgage loans that had been securitized for sale in the normal course of business. We had no realized gains as a result of these sales. Held-to-maturity securities Investment securities HTM are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts using the interest method. Unrealized losses are not recorded to the extent they are temporary in nature. There were no purchases or sales of HTM securities during both the three months ended March 31, 2019 and March 31, 2018 . The following table summarizes, by duration, the unrealized loss positions on investment securities: Unrealized Loss Position with Duration 12 Months and Over Unrealized Loss Position with Duration Under 12 Months Fair Value Number of Securities Unrealized Loss Fair Value Number of Securities Unrealized Loss (Dollars in millions) March 31, 2019 Available-for-sale securities Agency - Commercial $ 1,011 73 $ (34 ) $ 21 3 $ — Agency - Residential 624 78 (15 ) — — — Municipal obligations 27 14 — — — — Corporate debt obligations — — — 11 3 — Other MBS — — — 16 2 — Held-to-maturity securities Agency - Commercial $ 326 26 $ (13 ) $ — — $ — Agency - Residential 306 55 (4 ) — — — December 31, 2018 Available-for-sale securities Agency - Commercial $ 1,025 74 $ (43 ) $ 1 1 $ — Agency - Residential 647 79 (24 ) 14 5 — Municipal obligations 28 16 (1 ) 1 2 — Corporate debt obligations — — — 7 2 — Held-to-maturity securities Agency - Commercial $ 336 26 $ (13 ) $ — — $ — Agency - Residential 345 60 (9 ) — — — The following table shows the amortized cost and estimated fair value of securities by contractual maturity: Investment Securities Available-for-Sale Investment Securities Held-to-maturity Amortized Cost Fair Value Weighted Average Yield Amortized Cost Fair Value Weighted Average Yield (Dollars in millions) March 31, 2019 Due in one year or less $ 1 $ 1 1.50 % $ — $ — — % Due after one year through five years 60 60 2.51 % 10 10 2.45 % Due after five years through 10 years 74 74 4.44 % 10 10 2.24 % Due after 10 years 2,050 2,007 2.68 % 663 646 2.46 % Total $ 2,185 $ 2,142 $ 683 $ 666 We pledge investment securities, primarily agency collateralized and municipal taxable mortgage obligations, to collateralize lines of credit and/or borrowings. At both March 31, 2019 and December 31, 2018 , we had pledged investment securities of $1.9 billion .

Loans Held-for-Sale

Loans Held-for-Sale	3 Months Ended
	Mar. 31, 2019
Receivables Held-for-sale [Abstract]
Loans Held-for-Sale	Loans Held-for-Sale The majority of our mortgage loans originated as LHFS are ultimately sold into the secondary market on a whole loan basis or by securitizing the loans into agency, government, or private label mortgage-backed securities. LHFS totaled $3.9 billion at both March 31, 2019 and December 31, 2018 . For the three months ended March 31, 2019 we had net gain on loan sales associated with LHFS of $47 million , as compared to $60 million for the three months ended March 31, 2018 . At March 31, 2019 and December 31, 2018 , $28 million and $137 million , respectively, of LHFS were recorded at lower of cost or fair value. We elected the fair value option for the remainder of the loans in the portfolio.

Loans Held-for-Investment

Loans Held-for-Investment	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Loans Held-for-Investment	Loans Held-for-Investment The following table presents our loans held-for-investment: March 31, 2019 December 31, 2018 (Dollars in millions) Consumer loans Residential first mortgage $ 3,100 $ 2,999 Home equity 796 731 Other 433 314 Total consumer loans 4,329 4,044 Commercial loans Commercial real estate 2,324 2,152 Commercial and industrial 1,651 1,433 Warehouse lending 1,632 1,459 Total commercial loans 5,607 5,044 Total loans held-for-investment $ 9,936 $ 9,088 The following table presents the UPB of our loan sales and purchases in the loans held-for-investment portfolio: Three Months Ended March 31, 2019 2018 (Dollars in millions) Loans Sold (1) Performing loans (2) $ 102 $ — Total loans sold $ 102 $ — Net gain associated with loan sales (3) $ 2 $ — Loans Purchased Home equity $ 49 $ — Other consumer 51 — Total loans purchased $ 100 $ — Premium associated with loans purchased $ 3 $ — (1) Upon a change in our intent, the loans were transferred to LHFS and subsequently sold. (2) During the three months ended December 31, 2018, we entered into an agreement to sell these loans, which we subsequently settled on during the three months ended March 31, 2019 . (3) Recorded in net gain on loan sales on Consolidated Statements of Operations. We have pledged certain LHFI, LHFS, and loans with government guarantees to collateralize lines of credit and/or borrowings with the FHLB of Indianapolis and the FRB of Chicago. At March 31, 2019 we had pledged loans of $6.5 billion , compared to $6.8 billion of pledged loans at December 31, 2018 . Allowance for Loan Losses We determine the estimate of the ALLL on at least a quarterly basis. Refer to Note 1- Description of Business, Basis of Presentation, and Summary of Significant Accounting Standards to the consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2018 for a description of the methodology. The ALLL, other than for loans that have been identified for individual evaluation for impairment, is determined on a loan pool basis by grouping loan types with common risk characteristics to determine our best estimate of incurred losses. The following table presents changes in ALLL, by class of loan: Residential First Mortgage (1) Home Equity Other Consumer Commercial Real Estate Commercial and Industrial Warehouse Lending Total (Dollars in millions) Three Months Ended March 31, 2019 Beginning balance ALLL $ 38 $ 15 $ 3 $ 48 $ 18 $ 6 $ 128 Charge-offs (1 ) — (1 ) — — — (2 ) Recoveries — 1 — — — — 1 Provision (benefit) (2 ) — 2 (12 ) 12 — — Ending balance ALLL $ 35 $ 16 $ 4 $ 36 $ 30 $ 6 $ 127 Three Months Ended March 31, 2018 Beginning balance ALLL $ 47 $ 22 $ 1 $ 45 $ 19 $ 6 $ 140 Charge-offs (1 ) (1 ) — — — — (2 ) Recoveries — 1 — — — — 1 Provision (benefit) 1 (1 ) — (1 ) 1 — — Ending balance ALLL $ 47 $ 21 $ 1 $ 44 $ 20 $ 6 $ 139 (1) Includes loans with government guarantees. The following table sets forth the method of evaluation, by class of loan: Residential First Mortgage (1) Home Equity Other Consumer Commercial Real Estate Commercial and Industrial Warehouse Lending Total (Dollars in millions) March 31, 2019 Loans held-for-investment (2) Individually evaluated $ 33 $ 23 $ 1 $ — $ — $ — $ 57 Collectively evaluated 3,059 771 432 2,324 1,651 1,632 9,869 Total loans $ 3,092 $ 794 $ 433 $ 2,324 $ 1,651 $ 1,632 $ 9,926 Allowance for loan losses (2) Individually evaluated $ 4 $ 7 $ — $ — $ — $ — $ 11 Collectively evaluated 31 9 4 36 30 6 116 Total allowance for loan losses $ 35 $ 16 $ 4 $ 36 $ 30 $ 6 $ 127 December 31, 2018 Loans held-for-investment (2) Individually evaluated $ 32 $ 23 $ — $ — $ — $ — $ 55 Collectively evaluated 2,959 706 314 2,152 1,433 1,459 9,023 Total loans $ 2,991 $ 729 $ 314 $ 2,152 $ 1,433 $ 1,459 $ 9,078 Allowance for loan losses (2) Individually evaluated $ 4 $ 7 $ — $ — $ — $ — $ 11 Collectively evaluated 34 8 3 48 18 6 117 Total allowance for loan losses $ 38 $ 15 $ 3 $ 48 $ 18 $ 6 $ 128 (1) Includes allowance related to loans with government guarantees. (2) Excludes loans carried under the fair value option. Loans are considered to be past due when any payment of principal or interest is 30 days past the scheduled payment date. While it is the goal of management to collect on loans, we attempt to work out a satisfactory repayment schedule or modification with past due borrowers and will undertake foreclosure proceedings if the delinquency is not satisfactorily resolved. Our practices regarding past due loans are designed to both assist borrowers in meeting their contractual obligations and minimize losses incurred by the Bank. We cease the accrual of interest on all classes of consumer and commercial loans upon the earlier of, becoming 90 days past due, or when doubt exists as to the ultimate collection of principal or interest (classified as nonaccrual or nonperforming loans). When a loan is placed on nonaccrual status, the accrued interest income is reversed and the loan may only return to accrual status when principal and interest become current and are anticipated to be fully collectible. The following table sets forth the LHFI aging analysis of past due and current loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due (1) Total Past Due Current Total LHFI (Dollars in millions) March 31, 2019 Consumer loans Residential first mortgage $ 3 $ 1 $ 20 $ 24 $ 3,076 $ 3,100 Home equity 1 — 3 4 792 796 Other 2 1 1 4 429 433 Total consumer loans 6 2 24 32 4,297 4,329 Commercial loans Commercial real estate — — — — 2,324 2,324 Commercial and industrial — 1 — 1 1,650 1,651 Warehouse lending — — — — 1,632 1,632 Total commercial loans — 1 — 1 5,606 5,607 Total loans (2) $ 6 $ 3 $ 24 $ 33 $ 9,903 $ 9,936 December 31, 2018 Consumer loans Residential first mortgage $ 4 $ 2 $ 19 $ 25 $ 2,974 $ 2,999 Home Equity 1 — 3 4 727 731 Other — — — — 314 314 Total consumer loans 5 2 22 29 4,015 4,044 Commercial loans Commercial real estate — — — — 2,152 2,152 Commercial and industrial — — — — 1,433 1,433 Warehouse lending — — — — 1,459 1,459 Total commercial loans — — — — 5,044 5,044 Total loans (2) $ 5 $ 2 $ 22 $ 29 $ 9,059 $ 9,088 (1) Includes less than 90 day past due performing loans which are deemed nonaccrual. Interest is not being accrued on these loans. (2) Includes $3 million of loans accounted for under the fair value option at both March 31, 2019 and December 31, 2018 . Interest income is recognized on nonaccrual loans using a cash basis method. Interest that would have been accrued on impaired loans was less than $1 million at both the three months ended March 31, 2019 and the three months ended March 31, 2018 . At March 31, 2019 and December 31, 2018 , we had no loans 90 days past due and still accruing interest. Troubled Debt Restructurings We may modify certain loans in both our consumer and commercial loan portfolios to retain customers or to maximize collection of the outstanding loan balance. Troubled debt restructurings ("TDRs") are modified loans in which a borrower demonstrates financial difficulties and for which a concession has been granted as a result. Nonperforming TDRs are included in nonaccrual loans. TDRs remain in nonperforming status until a borrower has made payments and is current for at least six consecutive months. Performing TDRs are not considered to be nonaccrual so long as we believe that all contractual principal and interest due under the restructured terms will be collected. Performing and nonperforming TDRs remain impaired as interest and principal will not be received in accordance with the original contractual terms of the loan agreement. Refer to Note 1- Description of Business, Basis of Presentation, and Summary of Significant Accounting Standards to the consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2018 for a description of the methodology used to determine TDRs. Some loan modifications classified as TDRs may not ultimately result in the full collection of principal and interest, as modified, but may give rise to potential incremental losses. We measure impairments using a discounted cash flow method for performing TDRs and measure impairment based on collateral values for nonperforming TDRs. The following table provides a summary of TDRs by type and performing status: TDRs Performing Nonperforming Total (Dollars in millions) March 31, 2019 Consumer loans Residential first mortgage $ 22 $ 8 $ 30 Home equity 21 2 23 Total TDRs (1)(2) $ 43 $ 10 $ 53 December 31, 2018 Consumer loans Residential first mortgage $ 22 $ 8 $ 30 Home Equity 22 2 24 Total TDRs (1)(2) $ 44 $ 10 $ 54 (1) The ALLL on TDR loans totaled $10 million at both March 31, 2019 and December 31, 2018 . (2) Includes $3 million of TDR loans accounted for under the fair value option at both March 31, 2019 and December 31, 2018 . The following table provides a summary of newly modified TDRs: New TDRs Number of Accounts Pre-Modification Unpaid Principal Balance Post-Modification Unpaid Principal Balance (1) Increase in Allowance at Modification (Dollars in millions) Three Months Ended March 31, 2019 Residential first mortgages 2 $ — $ — $ — Home equity (2)(3) 2 — — — Total TDR loans 4 $ — $ — $ — Three Months Ended March 31, 2018 Residential first mortgages 6 $ 1 $ 1 $ — Home equity (2)(3) 5 1 1 — Commercial and industrial 1 5 5 1 Total TDR loans 12 $ 7 $ 7 $ 1 (1) Post-modification balances include past due amounts that are capitalized at modification date. (2) Home equity post-modification UPB reflects write downs. (3) Includes loans carried at the fair value option. There were no residential first mortgage loans modified in the previous 12 months that subsequently defaulted during the three months ended March 31, 2019 , compared to two residential first mortgage loans with UPB of $1 million modified in the previous 12 months that subsequently defaulted during the three months ended March 31, 2018. There was no change in the allowance associated with these TDRs at subsequent default. All TDR classes within the consumer and commercial portfolios are considered subsequently defaulted when greater than 90 days past due within 12 months of the restructuring date. Impaired Loans The following table presents individually evaluated impaired loans and the associated allowance: March 31, 2019 December 31, 2018 Recorded Investment Net Unpaid Principal Balance Related Allowance Recorded Investment Net Unpaid Principal Balance Related Allowance (Dollars in millions) With no related allowance recorded Consumer loans Residential first mortgage $ 16 $ 20 $ — $ 13 $ 16 $ — Home equity — 3 — 1 4 — Other consumer 1 1 — — — — Total loans with no related allowance recorded $ 17 $ 24 $ — $ 14 $ 20 $ — With an allowance recorded Consumer loans Residential first mortgage $ 18 $ 18 $ 4 $ 19 $ 20 $ 4 Home equity 22 23 7 22 23 7 Total loans with an allowance recorded $ 40 $ 41 $ 11 $ 41 $ 43 $ 11 Total Impaired loans Consumer Loans Residential first mortgage $ 34 $ 38 $ 4 $ 32 $ 36 $ 4 Home equity 22 26 7 23 27 7 Other consumer 1 1 — — — — Total impaired loans $ 57 $ 65 $ 11 $ 55 $ 63 $ 11 The following table presents average impaired loans and the interest income recognized: Three Months Ended March 31, 2019 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in millions) Consumer loans Residential first mortgage $ 34 $ — $ 33 $ — Home equity 22 — 27 1 Other consumer 1 — — — Commercial loans Commercial and industrial — — 3 — Total impaired loans $ 57 $ — $ 63 $ 1 Credit Quality We utilize an internal risk rating system which is applied to all consumer and commercial loans. Descriptions of our internal risk ratings as they relate to credit quality follow the ratings used by the U.S. bank regulatory agencies as listed below. Pass. Pass assets are not impaired nor do they have any known deficiencies that could impact the quality of the asset. Watch. Watch assets are defined as pass rated assets that exhibit elevated risk characteristics or other factors that deserve management’s close attention and increased monitoring. However, the asset does not exhibit a potential or well-defined weakness that would warrant a downgrade to criticized or adverse classification. Special mention. Assets identified as special mention possess credit deficiencies or potential weaknesses deserving management's close attention. Special mention assets have a potential weakness or pose an unwarranted financial risk that, if not corrected, could weaken the assets and increase risk in the future. Special mention assets are criticized, but do not expose an institution to sufficient risk to warrant adverse classification. Substandard . Assets identified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the full collection or liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. For home equity loans and other consumer loans, we evaluate credit quality based on the aging and status of payment activity and any other known credit characteristics that call into question full repayment of the asset. Substandard loans may be placed on either accrual or non-accrual status. Doubtful . An asset classified as doubtful has all the weaknesses inherent in one classified substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. A doubtful asset has a high probability of total or substantial loss, but because of specific pending events that may strengthen the asset, its classification as loss is deferred. Doubtful borrowers are usually in default, lack adequate liquidity or capital, and lack the resources necessary to remain an operating entity. Pending events can include mergers, acquisitions, liquidations, capital injections, the perfection of liens on additional collateral, the valuation of collateral, and refinancing. Generally, pending events should be resolved within a relatively short period and the ratings will be adjusted based on the new information. Due to the high probability of loss, doubtful assets are placed on non-accrual. Loss. An asset classified as loss is considered uncollectible and of such little value that the continuance as a bankable asset is not warranted. This classification does not mean that an asset has absolutely no recovery or salvage value, but, rather that it is not practical or desirable to defer writing off the asset even though partial recovery may be affected in the future. Consumer Loans Consumer loans consist of open and closed end loans extended to individuals for household, family, and other personal expenditures, and includes consumer loans, and loans to individuals secured by their personal residence, including first mortgage, home equity, and home improvement loans. Because consumer loans are usually relatively small-balance, homogeneous exposures, consumer loans are rated primarily on payment performance. Payment performance is a proxy for the strength of repayment capacity and loans are generally classified based on their payment status rather than by an individual review of each loan. In accordance with regulatory guidance, we assign risk ratings to consumer loans in the following manner: • Consumer loans are classified as Watch once the loan becomes 60 days past due. • Open and closed-end consumer loans 90 days or more past due are classified Substandard. Commercial Loans Management conducts periodic examinations which serve as an independent verification of the accuracy of the ratings assigned. Loan grades are based on different factors within the borrowing relationship: entity sales, debt service coverage, debt/total net worth, liquidity, balance sheet and income statement trends, management experience, business stability, financing structure, and financial reporting requirements. The underlying collateral is also rated based on the specific type of collateral and corresponding LTV. The combination of the borrower and collateral risk ratings results in the final rating for the borrowing relationship. March 31, 2019 Pass Watch Special Mention Substandard Total Loans (Dollars in millions) Consumer Loans Residential first mortgage $ 3,053 $ 25 $ — $ 22 $ 3,100 Home equity 771 22 — 3 796 Other consumer 431 1 — 1 433 Total consumer loans $ 4,255 $ 48 $ — $ 26 $ 4,329 Commercial Loans Commercial real estate $ 2,297 $ 20 $ 5 $ 2 $ 2,324 Commercial and industrial 1,568 19 32 32 1,651 Warehouse 1,385 232 15 — 1,632 Total commercial loans $ 5,250 $ 271 $ 52 $ 34 $ 5,607 December 31, 2018 Pass Watch Special Mention Substandard Total Loans (Dollars in millions) Consumer Loans Residential first mortgage $ 2,952 $ 28 $ — $ 19 $ 2,999 Home equity 705 23 — 3 731 Other consumer 314 — — — 314 Total consumer loans $ 3,971 $ 51 $ — $ 22 $ 4,044 Commercial Loans Commercial real estate $ 2,132 $ 14 $ 5 $ 1 $ 2,152 Commercial and industrial 1,351 53 29 — 1,433 Warehouse 1,324 120 15 — 1,459 Total commercial loans $ 4,807 $ 187 $ 49 $ 1 $ 5,044

Loans with Government Guarantee

Loans with Government Guarantees	3 Months Ended
	Mar. 31, 2019
Loans and Leases Receivable Disclosure [Abstract]
Loans with Government Guarantees	Loans with Government Guarantees Substantially all loans with government guarantees are insured or guaranteed by the FHA or the U.S. Department of Veterans Affairs. FHA loans earn interest at a rate based upon the 10 -year U.S. Treasury note rate at the time the underlying loan becomes delinquent, which is not paid by the FHA or the U.S. Department of Veterans Affairs until claimed. Certain loans within our portfolio may be subject to indemnifications and insurance limits which expose us to limited credit risk. We have reserved for these risks within other assets and as a component of our ALLL on residential first mortgages. At March 31, 2019 and December 31, 2018 , loans with government guarantees totaled $470 million and $392 million , respectively. Repossessed assets and the associated claims related to government guaranteed loans are recorded in other assets and totaled $53 million and $50 million , at March 31, 2019 and December 31, 2018 , respectively.

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2019
Disclosure of Transfer of Securitizations or Asset-backed Financing Financial Assets Accounted for as Sale [Abstract]
Variable Interest Entities	Variable Interest Entities We have no consolidated VIEs as of March 31, 2019 and December 31, 2018 . In connection with our securitization activities, we have retained a five percent interest in the investment securities of certain trusts ("other MBS") and are contracted as the subservicer of the underlying loans, compensated based on market rates, which constitutes a continuing involvement in these trusts. Although we have a variable interest in these securitization trusts, we are not their primary beneficiary due to the relative size of our investment in comparison to the total amount of securities issued by the VIE and our inability to direct activities that most significantly impact the VIE’s economic performance. As a result, we have not consolidated the assets and liabilities of the VIE in our Statements of Financial Condition. The Bank’s maximum exposure to loss is limited to our investment in the VIE, as well as the standard representations and warranties made in conjunction with the loan transfer. See Note 3 - Investment Securities and Note 17 - Fair Value Measurements, for additional information. In addition, we have a continuing involvement, but are not the primary beneficiary for an unconsolidated VIE related to the FSTAR 2007-1 mortgage securitization trust. In accordance with the settlement agreement with MBIA, there is no further recourse to us related to FSTAR 2007-1, unless MBIA fails to meet their obligations. At March 31, 2019 and December 31, 2018 , the FSTAR 2007-1 mortgage securitization trust included 1,427 loans and 1,513 loans, respectively, with an aggregate principal balance of $46 million and $49 million , respectively.

Mortgage Servicing Rights

Mortgage Servicing Rights	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights We have investments in MSRs that result from the sale of loans to the secondary market for which we retain the servicing. We account for MSRs at their fair value. A primary risk associated with MSRs is the potential reduction in fair value as a result of higher than anticipated prepayments due to loan refinancing prompted, in part, by declining interest rates or government intervention. Conversely, these assets generally increase in value in a rising interest rate environment to the extent that prepayments are slower than anticipated. We utilize derivatives as economic hedges to offset changes in the fair value of the MSRs resulting from the actual or anticipated changes in prepayments stemming from changing interest rate environments. There is also a risk of valuation decline due to higher than expected increases in default rates, which we do not believe can be effectively managed using derivatives. For further information regarding the derivative instruments utilized to manage our MSR risks, see Note 9 - Derivative Financial Instruments. Changes in the fair value of residential first mortgage MSRs were as follows: Three Months Ended March 31, 2019 2018 (Dollars in millions) Balance at beginning of period $ 290 $ 291 Additions from loans sold with servicing retained 67 84 Reductions from sales (45 ) (141 ) Changes in fair value due to (1): Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other (11 ) (5 ) Changes in estimates of fair value due to interest rate risk (2) (23 ) 10 Fair value of MSRs at end of period $ 278 $ 239 (1) Changes in fair value are included within net return on mortgage servicing rights on the Consolidated Statements of Operations. (2) Represents estimated MSR value change resulting primarily from market-driven changes which we manage through the use of derivatives. The following table summarizes the hypothetical effect on the fair value of servicing rights using adverse changes of 10 percent and 20 percent to the weighted average of certain significant assumptions used in valuing these assets: March 31, 2019 December 31, 2018 Fair value impact due to Fair value impact due to Actual 10% adverse change 20% adverse change Actual 10% adverse change 20% adverse change (Dollars in millions) (Dollars in millions) Option adjusted spread 5.51 % $ 270 $ 266 5.42 % $ 284 $ 280 Constant prepayment rate 10.17 % 260 247 9.57 % 278 268 Weighted average cost to service per loan $ 86.11 272 269 $ 85.57 286 283 The sensitivity calculations above are hypothetical and should not be considered to be predictive of future performance. Changes in fair value based on adverse changes in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. To isolate the effect of the specified change, the fair value shock analysis is consistent with the identified adverse change, while holding all other assumptions constant. In practice, a change in one assumption generally impacts other assumptions, which may either magnify or counteract the effect of the change. For further information on the fair value of MSRs, see Note 17 - Fair Value Measurements. Contractual servicing and subservicing fees . Contractual servicing and subservicing fees, including late fees and other ancillary income are presented below. Contractual servicing fees are included within net return on mortgage servicing rights on the Consolidated Statements of Operations. Contractual subservicing fees including late fees and other ancillary income are included within loan administration income on the Consolidated Statements of Operations. Subservicing fee income is recorded for fees earned on subserviced loans, net of third party subservicing costs. The following table summarizes income and fees associated with owned mortgage servicing rights: Three Months Ended March 31, 2019 2018 (Dollars in millions) Net return on mortgage servicing rights Servicing fees, ancillary income and late fees (1) $ 19 $ 14 Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other (11 ) $ (5 ) Changes in estimates of fair value due to interest rate risk (23 ) 10 Gain (loss) on MSR derivatives (2) 22 (11 ) Net transaction costs on sale of MSR assets (1 ) (4 ) Total return included in net return on mortgage servicing rights $ 6 $ 4 (1) Servicing fees are recorded on an accrual basis. Ancillary income and late fees are recorded on a cash basis. (2) Changes in the derivatives utilized as economic hedges to offset changes in fair value of the MSRs. The following table summarizes income and fees associated with our mortgage loans subserviced for others: Three Months Ended March 31, 2019 2018 (Dollars in millions) Loan administration income on mortgage loans subserviced Servicing fees, ancillary income and late fees (1) $ 24 $ 10 Charges on subserviced escrow balances (12 ) (5 ) Other servicing charges (1 ) — Total income on mortgage loans subserviced, included in loan administration $ 11 $ 5 (1) Servicing fees are recorded on an accrual basis. Ancillary income and late fees are recorded on cash basis.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Derivative financial instruments are recorded at fair value in other assets and other liabilities on the Consolidated Statements of Financial Condition. Our policy is to present its derivative assets and derivative liabilities on the Consolidated Statement of Financial Condition on a gross basis, even when provisions allowing for set-off are in place. However, for derivative contracts cleared through certain central clearing parties, variation margin payments are recognized as settlements. We are exposed to non-performance risk by the counterparties to our various derivative financial instruments. A majority of our derivatives are centrally cleared through a Central Counterparty Clearing House or consist of residential mortgage interest rate lock commitments further limiting our exposure to non-performance risk. We believe that the non-performance risk inherent in our remaining derivative contracts is minimal based on credit standards and the collateral provisions of the derivative agreements. Derivatives not designated as hedging instruments: We maintain a derivative portfolio of interest rate swaps, futures and forward commitments used to manage exposure to changes in interest rates, MSR asset values and to meet the needs of customers. We also enter into interest rate lock commitments, which are commitments to originate mortgage loans whereby the interest rate on the loan is determined prior to funding and the customers have locked into that interest rate. Market risk on interest rate lock commitments and mortgage LHFS is managed using corresponding forward sale commitments. Changes in fair value of derivatives not designated as hedging instruments are recognized in the Consolidated Statements of Income. Derivatives designated as hedging instruments: We have designated certain interest rate swaps as fair value hedges of fixed rate certificates of deposit. Derivatives that are designated in hedging relationships are assessed for effectiveness using regression analysis at inception and throughout the hedge period. All designated hedge relationships were and are expected to be highly effective as of March 31, 2019 . Cash flows and the profit impact associated with designated hedges are reported in the same category as the underlying hedged item. The following table presents the notional amount, estimated fair value and maturity of our derivative financial instruments: March 31, 2019 (1) Notional Amount Fair Value (2) Expiration Dates (Dollars in millions) Derivatives in fair value hedge relationships: Assets Interest rate swap on CDs $ 10 $ — 2019 Derivatives not designated as hedging instruments: Assets Futures $ 234 $ — 2019-2023 Mortgage-backed securities forwards 2,001 4 2019 Rate lock commitments 4,102 37 2019 Interest rate swaps and swaptions 894 16 2019-2029 Total derivative assets $ 7,231 $ 57 Liabilities Futures $ 1,295 $ 1 2019-2023 Mortgage-backed securities forwards 4,942 41 2019 Rate lock commitments 143 — 2019 Interest rate swaps 1,350 4 2019-2049 Total derivative liabilities $ 7,730 $ 46 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes. (2) Derivative assets and liabilities are included in other assets and other liabilities on the Consolidated Statements of Financial Condition, respectively. December 31, 2018 (1) Notional Amount Fair Value (2) Expiration Dates (Dollars in millions) Derivatives in fair value hedge relationships: Assets Interest rate swaps on CDs $ 20 $ — 2019 Liabilities Interest rate swaps on CDs $ 10 $ — 2019 Derivatives not designated as hedging instruments: Assets Futures $ 248 $ — 2019-2023 Mortgage backed securities forwards 362 4 2019 Rate lock commitments 2,221 20 2019 Interest rate swaps and swaptions 1,662 23 2019-2049 Total derivative assets $ 4,493 $ 47 Liabilities Futures $ 1,513 $ 1 2019-2023 Mortgage backed securities forwards 4,625 31 2019 Rate lock commitments 45 — 2019 Interest rate swaps 755 7 2019-2028 Total derivative liabilities $ 6,938 $ 39 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes. (2) Derivative assets and liabilities are included in other assets and other liabilities on the Consolidated Statements of Financial Condition, respectively. The following tables present the derivatives subject to a master netting arrangement, including the cash pledged as collateral: Gross Amounts Netted in the Statement of Financial Position Net Amount Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Gross Amount Financial Instruments Cash Collateral (Dollars in millions) March 31, 2019 Derivatives not designated as hedging instruments: Assets Mortgage backed securities forwards $ 4 $ — $ 4 $ — $ — Interest rate swaps and swaptions (1) 16 — 16 — 3 Total derivative assets $ 20 $ — $ 20 $ — $ 3 Liabilities Futures $ 1 $ — $ 1 $ — $ 1 Mortgage backed securities forwards 41 — 41 — 42 Interest rate swaps (1) 4 — 4 — 28 Total derivative liabilities $ 46 $ — $ 46 $ — $ 71 December 31, 2018 Derivatives not designated as hedging instruments: Assets Mortgage-backed securities forwards $ 4 $ — $ 4 $ — $ — Interest rate swaps and swaptions (1) 23 — 23 — 14 Total derivative assets $ 27 $ — $ 27 $ — $ 14 Liabilities Futures $ 1 $ — $ 1 $ — $ 1 Mortgage-backed securities forwards 31 — 31 — 29 Interest rate swaps (1) 7 — 7 — 23 Total derivative liabilities $ 39 $ — $ 39 $ — $ 53 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes. The fair value basis adjustment on our hedged CDs is included in interest bearing deposits on our Consolidated Statements of Operations. The carrying amount of our hedged CDs was $10 million at March 31, 2019 and $30 million at December 31, 2018 and the cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged CDs was de minimis at both March 31, 2019 and December 31, 2018 , respectively. At March 31, 2019 , we pledged a total of $71 million related to derivative financial instruments, consisting of $44 million of cash collateral on derivative liabilities and $27 million of maintenance margin on centrally cleared derivatives and had an obligation to return cash of $3 million on derivative assets. We pledged a total of $53 million related to derivative financial instruments, consisting of $30 million of cash collateral on derivatives and $23 million of maintenance margin on centrally cleared derivatives and had an obligation to return cash of $14 million on derivative assets at December 31, 2018 . Within the Consolidated Statements of Financial Condition, the collateral related to derivative activity is included in other assets and other liabilities and the cash pledged as maintenance margin is restricted and included in other assets. The following table presents the net gain (loss) recognized on designated instruments, net of the impact of offsetting positions: Amount Recorded in Net Interest Income (1) Three Months Ended March 31, 2019 2018 (Dollars in millions) Gain (loss) on cash flow hedging relationships in interest contracts: Amount of gain (loss) reclassified from AOCI into income $ — $ (1 ) Total gain (loss) on hedges $ — $ (1 ) (1) The gain (loss) on fair value hedging relationships in interest contracts was de minimis and zero for the three months ending March 31, 2019 and March 31, 2018 , respectively. During the second quarter of 2018, we de-designated all of our remaining cash flow hedge relationships. The following table presents net gain (loss) recognized in income on derivative instruments, net of the impact of offsetting positions: Three Months Ended March 31, 2019 2018 (Dollars in millions) Derivatives not designated as hedging instruments: Location of Gain (Loss) Futures Net return on mortgage servicing rights $ — $ (2 ) Interest rate swaps and swaptions Net return on mortgage servicing rights 13 (5 ) Mortgage-backed securities forwards Net return on mortgage servicing rights 9 (4 ) Rate lock commitments and forward agency and loan sales Net gain on loan sales 8 (8 ) Forward commitments Other noninterest income 1 — Interest rate swaps (1) Other noninterest income 1 — Total derivative gain (loss) $ 32 $ (19 ) (1) Includes customer-initiated commercial interest rate swaps.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Borrowings	Borrowings Federal Home Loan Bank Advances The following is a breakdown of our FHLB advances outstanding: March 31, 2019 December 31, 2018 Amount Rate Amount Rate (Dollars in millions) Short-term fixed rate term advances $ 2,830 2.55 % $ 2,993 2.52 % Other short-term borrowings 271 2.45 % 251 2.87 % Total short-term Federal Home Loan Bank advances and other borrowings 3,101 3,244 Long-term Federal Home Loan Bank fixed rate advances (1) 250 1.68 % 150 1.53 % Total Federal Home Loan Bank advances $ 3,351 $ 3,394 (1) Includes the current portion of fixed rate advances of $50 million at both March 31, 2019 and December 31, 2018 . The following table contains detailed information on our FHLB advances and other borrowings: Three Months Ended March 31, 2019 2018 (Dollars in millions) Maximum outstanding at any month end $ 3,391 $ 5,740 Average outstanding balance 2,878 5,322 Average remaining borrowing capacity 3,314 1,399 Weighted average interest rate 2.45 % 1.65 % The following table outlines the maturity dates of our FHLB advances and other borrowings: March 31, 2019 (Dollars in millions) 2019 $ 3,151 2020 — 2021 — 2022 — Thereafter 200 Total $ 3,351 Parent Company Senior Notes and Trust Preferred Securities The following table presents long-term debt, net of debt issuance costs: March 31, 2019 December 31, 2018 Amount Interest Rate Amount Interest Rate (Dollars in millions) Senior Notes Senior notes, matures 2021 $ 248 6.125 % $ 248 6.125 % Trust Preferred Securities Floating Three Month LIBOR Plus: 3.25%, matures 2032 $ 26 5.86 % $ 26 6.07 % 3.25%, matures 2033 26 6.04 % 26 5.69 % 3.25%, matures 2033 26 5.85 % 26 6.05 % 2.00%, matures 2035 26 4.79 % 26 4.44 % 2.00%, matures 2035 26 4.79 % 26 4.44 % 1.75%, matures 2035 51 4.36 % 51 4.54 % 1.50%, matures 2035 25 4.29 % 25 3.94 % 1.45%, matures 2037 25 4.06 % 25 4.24 % 2.50%, matures 2037 16 5.11 % 16 5.29 % Total Trust Preferred Securities 247 247 Total other long-term debt $ 495 $ 495 Senior Notes On July 11, 2016, we issued $250 million of senior notes (“Senior Notes”) which mature on July 15, 2021. Prior to June 15, 2021, we may redeem some or all of the Senior Notes at a redemption price equal to the greater of 100 percent of the aggregate principal amount of the notes to be redeemed or the sum of the present values of the remaining scheduled payments discounted to the redemption date on a semi-annual basis using a discount rate equal to the Treasury Rate plus 0.50 percent , plus, in each case accrued and unpaid interest. Trust Preferred Securities We sponsor nine trust subsidiaries, which issued preferred stock to third party investors. We issued junior subordinated debt securities to those trusts, which we have included in long-term debt. The junior subordinated debt securities are the sole assets of those trusts. The trust preferred securities are callable by us at any time. Interest is payable quarterly; however, we may defer interest payments for up to 20 quarters without default or penalty. As of March 31, 2019 , we had no deferred interest.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following table sets forth the components in accumulated other comprehensive income (loss): Three Months Ended March 31, 2019 2018 (Dollars in millions) Investment securities Beginning balance $ (47 ) $ (18 ) Unrealized gain (loss) 21 (32 ) Less: Tax provision (benefit) 5 (8 ) Net unrealized gain (loss) 16 (24 ) Reclassification of certain income tax effects (1) — (5 ) Other comprehensive income (loss), net of tax 16 (29 ) Ending balance $ (31 ) $ (47 ) Cash Flow Hedges Beginning balance $ — $ 2 Unrealized gain — 19 Less: Tax provision — 5 Net unrealized gain — 14 Reclassifications out of AOCI (2) — 1 Net unrealized gain reclassified out of AOCI — 1 Other comprehensive income, net of tax — 15 Ending balance $ — $ 17 (1) Income tax effects of the Tax Cuts and Jobs Act are reclassified from AOCI to retained earnings due to early adoption of ASU 2018-02. (2) Reclassifications are reported in interest expense on the Consolidated Statement of Operations.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share, excluding dilution, is computed by dividing earnings applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock or resulted in the issuance of common stock that could then share in our earnings. The following table sets forth the computation of basic and diluted earnings per share of common stock: Three Months Ended March 31, 2019 2018 (Dollars in millions, except share data) Net income $ 36 $ 35 Weighted Average Shares Weighted average common shares outstanding 56,897,799 57,356,654 Effect of dilutive securities Stock-based awards 692,473 957,731 Weighted average diluted common shares 57,590,272 58,314,385 Earnings per common share Basic earnings per common share $ 0.64 $ 0.61 Effect of dilutive securities Stock-based awards (0.01 ) (0.01 ) Diluted earnings per common share $ 0.63 $ 0.60

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation We had stock-based compensation expense of $3 million and $2 million for the three months ended March 31, 2019 and March 31, 2018 , respectively. Restricted Stock and Restricted Stock Units The following table summarizes restricted stock and restricted stock units activity: Three Months Ended March 31, 2019 Shares Weighted — Average Grant-Date Fair Value per Share Restricted Stock and Restricted Stock Units Non-vested balance at beginning of period 1,620,568 $ 27.27 Granted 60,879 30.68 Vested (31,364 ) 34.45 Canceled and forfeited (17,701 ) 32.17 Non-vested balance at end of period 1,632,382 $ 27.20 2017 Employee Stock Purchase Plan A total of 800,000 shares of the Company’s common stock are reserved and authorized for issuance for purchase under the Employee Stock Purchase Plan (ESPP). There were 32,878 shares issued under the ESPP during the three months ended March 31, 2019 and the associated compensation expense was de minimis.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes in interim periods requires us to make a best estimate of the effective tax rate expected to be applicable for the full year, adjusted for any discrete items for the applicable period. This estimated effective tax rate is then applied to interim consolidated pre-tax operating income to determine the interim provision for income taxes. The following table presents our provision for income tax and effective tax provision rate: Three Months Ended March 31, 2019 2018 (Dollars in millions) Provision for income taxes $ 8 $ 9 Effective tax provision rate 18.4 % 20.1 % We believe that it is unlikely that our unrecognized tax benefits will change by a material amount during the next 12 months . We recognize interest and penalties related to unrecognized tax benefits in provision for income taxes.

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters Regulatory Capital We, along with the Bank, must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary actions by regulators that could have a material effect on the Consolidated Financial Statements. On January 1, 2015 , the Basel III rules became effective and included transition provisions through 2018. In preparation for the expected capital simplification rules, the Basel III implementation phase-in has been halted, as the agencies issued a final rule that will maintain the capital rules’ 2017 transition provisions for several regulatory capital deductions and certain other requirements that are subject to multi-year phase-in schedules in the regulatory capital rules. To be categorized as "well-capitalized," the Company and the Bank must maintain minimum tangible capital, Tier 1 capital, common equity Tier 1, and total capital ratios as set forth in the table below. We, along with the Bank, are considered "well-capitalized" at both March 31, 2019 and December 31, 2018 . The following tables present the regulatory capital ratios as of the dates indicated: Flagstar Bancorp Actual For Capital Adequacy Purposes Well-Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio (Dollars in millions) March 31, 2019 Tangible capital (to adjusted avg. total assets) $ 1,520 8.37 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,520 8.37 % $ 727 4.0 % $ 909 5.0 % Common equity Tier 1 capital (to RWA) 1,280 9.69 % 594 4.5 % 859 6.5 % Tier 1 capital (to RWA) 1,520 11.51 % 793 6.0 % 1,057 8.0 % Total capital (to RWA) 1,650 12.49 % 1,057 8.0 % 1,321 10.0 % December 31, 2018 Tangible capital (to adjusted avg. total assets) $ 1,505 8.29 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,505 8.29 % $ 726 4.0 % $ 908 5.0 % Common equity Tier 1 capital (to RWA) 1,265 10.54 % 540 4.5 % 780 6.5 % Tier 1 capital (to RWA) 1,505 12.54 % 720 6.0 % 960 8.0 % Total capital (to RWA) 1,637 13.63 % 960 8.0 % 1,201 10.0 % N/A - Not applicable Flagstar Bank Actual For Capital Adequacy Purposes Well-Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio (Dollars in millions) March 31, 2019 Tangible capital (to adjusted avg. total assets) $ 1,641 9.04 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,641 9.04 % $ 726 4.0 % $ 908 5.0 % Common equity tier 1 capital (to RWA) 1,641 12.44 % 594 4.5 % 858 6.5 % Tier 1 capital (to RWA) 1,641 12.44 % 792 6.0 % 1,055 8.0 % Total capital (to RWA) 1,771 13.42 % 1,055 8.0 % 1,319 10.0 % December 31, 2018 Tangible capital (to adjusted avg. total assets) $ 1,574 8.67 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,574 8.67 % $ 726 4.0 % $ 908 5.0 % Common equity tier 1 capital (to RWA) 1,574 13.12 % 540 4.5 % 780 6.5 % Tier 1 capital (to RWA) 1,574 13.12 % 720 6.0 % 960 8.0 % Total capital (to RWA) 1,705 14.21 % 960 8.0 % 1,200 10.0 % N/A - Not applicable

Legal Proceedings, Contingencie

Legal Proceedings, Contingencies and Commitments	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings, Contingencies and Commitments	Legal Proceedings, Contingencies and Commitments Legal Proceedings We and our subsidiaries are subject to various pending or threatened legal proceedings arising out of the normal course of business operations. In addition, the Bank is routinely named in civil actions throughout the country by borrowers and former borrowers relating to the origination, purchase, sale, and servicing of mortgage loans. From time to time, governmental agencies also conduct investigations or examinations of various practices of the Bank. In the course of such investigations or examinations, the Bank cooperates with such agencies and provides information as requested. We assess the liabilities and loss contingencies in connection with pending or threatened legal and regulatory proceedings on at least a quarterly basis and establish accruals when we believe it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, litigation accruals are adjusted, as appropriate, in light of additional information. At March 31, 2019 , we do not believe that the amount of any reasonably possible losses in excess of any amounts accrued with respect to ongoing proceedings or any other known claims will be material to our financial statements, or that the ultimate outcome of these actions will have a material adverse effect on our financial condition, results of operations or cash flows. DOJ litigation settlement In 2012, the Bank entered into a Settlement Agreement with the DOJ which meets the definition of a financial liability (the "DOJ Liability"). In accordance with the Settlement Agreement, we made an initial payment of $15 million and agreed to make future annual payments totaling $118 million in annual increments of up to $25 million upon meeting all conditions, which are evaluated quarterly and include: (a) the reversal of the DTA valuation allowance, which occurred at the end of 2013; (b) the repayment of the Fixed Rate Cumulative Perpetual Preferred Stock, Series C (the "TARP Preferred"), which occurred in the third quarter of 2016; and (c) the Bank’s Tier 1 Leverage Capital Ratio equals 11 percent or greater as filed in the Call Report with the OCC. No payment would be required until six months after the Bank files its Call Report with the OCC first reporting that its Tier 1 Leverage Capital Ratio was 11 percent or greater. If all other conditions were then satisfied, an initial annual payment would be due at that time. The next annual payment is only made if such other conditions continue to be satisfied, otherwise payments are delayed until all such conditions are met. Further, making such a payment must not violate any material banking regulatory requirement, and the OCC must not object in writing. Consistent with our business and regulatory requirements, Flagstar shall seek in good faith to fulfill the conditions, and will not undertake any conduct or fail to take any action the purpose of which is to frustrate or delay our ability to fulfill any of the above conditions. Additionally, if the Bank and Bancorp become party to a business combination in which the Bank or Bancorp represent less than 33.3 percent of the resulting company’s assets, annual payments must commence twelve months after the date of that business combination. The Settlement Agreement meets the definition of a financial instrument for which we elected the fair value option. We consider the assumptions a market participant would make to transfer the liability and evaluate the potential ways we might satisfy the Settlement Agreement and our estimates of the likelihood of these outcomes, which may change over time. The fair value of the liability is subject to significant uncertainty and is impacted by forecasted estimates of the timing of potential payments some of which are impacted by inputs including estimates of equity, earnings, timing and amount of dividends and growth of the balance sheet and their related impacts on forecasted Tier 1 Leverage Capital Ratio. For further information on the fair value of the liability, see Note 17 - Fair Value Measurements. Other litigation accruals Excluding the fair value liability relating to the DOJ litigation settlement, our total accrual for contingent liabilities and settled litigation was $2 million at March 31, 2019 and December 31, 2018 . Commitments The following table is a summary of the contractual amount of significant commitments: March 31, 2019 December 31, 2018 (Dollars in millions) Commitments to extend credit Mortgage loans interest-rate lock commitments $ 4,286 $ 2,293 Warehouse loan commitments 2,222 2,334 Commercial and industrial commitments 1,007 918 Other commercial commitments 1,529 1,260 HELOC commitments 454 429 Other consumer commitments 189 108 Standby and commercial letters of credit 64 63 Commitments to extend credit are agreements to lend to a customer as long as there is not a violation of any condition established in the contract. Since many of these commitments expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. Commitments generally have fixed expiration dates or other termination clauses. We evaluate each customer's credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by us, upon extension of credit is based on management's credit evaluation of the counterparties. These instruments involve, to varying degrees, elements of credit and interest rate risk beyond the amount recognized on the Consolidated Statements of Financial Condition. Our exposure to credit losses in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. We utilize the same credit policies in making commitments and conditional obligations as we do for balance sheet instruments. The types of credit we extend are as follows: Mortgage loan interest-rate lock commitments. We enter into mortgage interest-rate lock commitments with our customers. These commitments are considered to be derivative instruments and the fair value of these commitments is recorded in the Consolidated Statements of Financial Condition in other assets. For further information, see Note 9 - Derivative Financial Instruments. Warehouse loan commitments. Lines of credit provided to mortgage originators to fund loans they originate and then sell. The proceeds of the sale of the loans are used to repay the draw on the line used to fund the loans. Commercial and industrial and other commercial commitments. Conditional commitments issued under various terms to lend funds to business and other entities. These commitments include revolving credit agreements, term loan commitments and short-term borrowing agreements. Many of these loan commitments have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of these commitments are expected to expire without being funded, the total commitment amounts do not necessarily represent future liquidity requirements. HELOC commitments. Commitments to extend, originate or purchase credit are primarily lines of credit to consumers and have specified rates and maturity dates. Many of these commitments also have adverse change clauses, which allow us to cancel the commitment due to deterioration in the borrowers’ creditworthiness or a decline in the collateral value. Other consumer commitments. C onditional commitments issued to accommodate the financial needs of customers. The commitments are made under various terms to lend funds to consumers, which include revolving credit agreements, term loan commitments and short-term borrowing agreements. Standby and commercial letters of credit. Conditional commitments issued to guarantee the performance of a customer to a third party. Standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party, while commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party. These financial standby letters of credit irrevocably obligate the bank to pay a third party beneficiary when a customer fails to repay an outstanding loan or debt instrument. We maintain a reserve for the estimate of probable credit losses inherent in unfunded commitments to extend credit. Unfunded commitments to extend credit include unfunded loans with available balances, new commitments to lend that are not yet funded, and standby and commercial letters of credit. A reserve balance of $3 million at both March 31, 2019 and December 31, 2018 , is reflected in other liabilities on the Consolidated Statements of Financial Condition.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We utilize fair value measurements to record or disclose the fair value on certain assets and liabilities. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability through an orderly transaction between market participants at the measurement date. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, we use present value techniques and other valuation methods to estimate the fair values of our financial instruments. These valuation models rely on market-based parameters when available, such as interest rate yield curves or credit spreads. Unobservable inputs may be based on management's judgment, assumptions and estimates related to credit quality, our future earnings, interest rates and other relevant inputs. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used. Valuation Hierarchy U.S. GAAP establishes a three-level valuation hierarchy for disclosure of fair value measurements. The hierarchy is based on the transparency of the inputs used in the valuation process with the highest priority given to quoted prices available in active markets and the lowest priority to unobservable inputs where no active market exists, as discussed below. Level 1 - Quoted prices (unadjusted) for identical assets or liabilities in active markets in which we can participate as of the measurement date; Level 2 - Quoted prices for similar instruments in active markets, and other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument; and Level 3 - Unobservable inputs that reflect our own assumptions about the assumptions that market participants would use in pricing an asset or liability. A financial instrument's categorization within the valuation hierarchy is based upon the lowest level of input within the valuation hierarchy that is significant to the overall fair value measurement. Transfers between levels of the fair value hierarchy are recognized at the end of the reporting period. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following tables present the financial instruments carried at fair value by caption on the Consolidated Statement of Financial Condition and by level in the valuation hierarchy. March 31, 2019 Level 1 Level 2 Level 3 Total Fair Value (Dollars in millions) Investment securities available-for-sale Agency - Commercial $ — $ 1,376 $ — $ 1,376 Agency - Residential — 649 — 649 Municipal obligations — 32 — 32 Corporate debt obligations — 53 — 53 Other MBS — 31 — 31 Certificate of Deposit — 1 — 1 Loans held-for-sale Residential first mortgage loans — 3,846 — 3,846 Loans held-for-investment Residential first mortgage loans — 8 — 8 Home equity — — 2 2 Mortgage servicing rights — — 278 278 Derivative assets Rate lock commitments (fallout-adjusted) — — 37 37 Mortgage-backed securities forwards — 4 — 4 Interest rate swaps and swaptions — 16 — 16 Total assets at fair value $ — $ 6,016 $ 317 $ 6,333 Derivative liabilities Futures $ — $ (1 ) $ — $ (1 ) Mortgage backed securities forwards — (41 ) — (41 ) Interest rate swaps — (4 ) — (4 ) DOJ litigation settlement — — (60 ) (60 ) Contingent consideration — — (6 ) (6 ) Total liabilities at fair value $ — $ (46 ) $ (66 ) $ (112 ) December 31, 2018 Level 1 Level 2 Level 3 Total Fair Value (Dollars in millions) Investment securities available-for-sale Agency - Commercial $ — $ 1,374 $ — $ 1,374 Agency - Residential — 662 — 662 Municipal obligations — 32 — 32 Corporate debt obligations — 41 — 41 Other MBS — 32 — 32 Loans held-for-sale Residential first mortgage loans — 3,732 — 3,732 Loans held-for-investment Residential first mortgage loans — 8 — 8 Home equity — — 2 2 Mortgage servicing rights — — 290 290 Derivative assets Rate lock commitments (fallout-adjusted) — — 20 20 Mortgage-backed securities forwards — 4 — 4 Interest rate swaps and swaptions — 23 — 23 Total assets at fair value $ — $ 5,908 $ 312 $ 6,220 Derivative liabilities Futures $ — $ (1 ) $ — $ (1 ) Mortgage-backed securities forwards — (31 ) — (31 ) Interest rate swaps — (7 ) — (7 ) DOJ litigation settlement — — (60 ) (60 ) Contingent consideration — — (6 ) (6 ) Total liabilities at fair value $ — $ (39 ) $ (66 ) $ (105 ) Fair Value Measurements Using Significant Unobservable Inputs The following tables include a roll forward of the Consolidated Statements of Financial Condition amounts (including the change in fair value) for financial instruments classified by us within Level 3 of the valuation hierarchy: Balance at Beginning of Period Total Gains (Losses) Recorded in Earnings (1) Purchases / Originations Sales Settlement Transfers In (Out) Balance at End of Period (Dollars in millions) Three Months Ended March 31, 2019 Assets Loans held-for-investment Home equity $ 2 $ — $ — $ — $ — $ — $ 2 Mortgage servicing rights (2) 290 (34 ) 67 (45 ) — — 278 Rate lock commitments (net) (2)(3) 20 25 50 — — (58 ) 37 Totals $ 312 $ (9 ) $ 117 $ (45 ) $ — $ (58 ) $ 317 Liabilities DOJ litigation settlement $ (60 ) $ — $ — $ — $ — $ — $ (60 ) Contingent consideration (6 ) — — — — — (6 ) Totals $ (66 ) $ — $ — $ — $ — $ — $ (66 ) Three Months Ended March 31, 2018 Assets Loans held-for-investment Home equity $ 4 $ 1 $ — $ — $ (1 ) $ — $ 4 Mortgage servicing rights (2) 291 5 84 (141 ) — — 239 Rate lock commitments (net) (2)(3) 24 (34 ) 62 — — (22 ) 30 Totals $ 319 $ (28 ) $ 146 $ (141 ) $ (1 ) $ (22 ) $ 273 Liabilities DOJ litigation settlement $ (60 ) $ — $ — $ — $ — $ — $ (60 ) Contingent consideration (25 ) 2 — — 2 — (21 ) Totals $ (85 ) $ 2 $ — $ — $ 2 $ — $ (81 ) (1) There were no unrealized gains (losses) recorded in OCI during the three months ended March 31, 2019 and 2018 . (2) We utilized swaptions, futures, forward agency and loan sales and interest rate swaps to manage the risk associated with mortgage servicing rights and rate lock commitments. Gains and losses for individual lines do not reflect the effect of our risk management activities related to such Level 3 instruments. (3) Rate lock commitments are reported on a fallout-adjusted basis. Transfers out of Level 3 represent the settlement value of the commitments that are transferred to LHFS, which are classified as Level 2 assets. The following tables present the quantitative information about recurring Level 3 fair value financial instruments and the fair value measurements as of: Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) March 31, 2019 Assets Loans held-for-investment Home equity $ 2 Discounted cash flows Discount rate 7.2% -10.8% (9.0%) (1) Mortgage servicing rights $ 278 Discounted cash flows Option adjusted spread 2.3% - 25.9% (5.5%) (1) Rate lock commitments (net) $ 37 Consensus pricing Origination pull-through rate 78.9% - 87.2% (80.4%) (1) Liabilities DOJ litigation settlement $ (60 ) Discounted cash flows See description below See description below Contingent consideration $ (6 ) Discounted cash flows Beta 0.6 - 1.6 (1.1) (2) Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) December 31, 2018 Assets Loans held-for-investment Home equity $ 2 Discounted cash flows Discount rate 7.2% - 10.8% (9.0%) (1) Mortgage servicing rights $ 290 Discounted cash flows Option adjusted spread 2.1% - 25.9% (5.4%) (1) Rate lock commitments (net) $ 20 Consensus pricing Origination pull-through rate 75.0% - 87.2% (76.8%) (1) Liabilities DOJ litigation settlement $ (60 ) Discounted cash flows See description below See description below Contingent consideration $ (6 ) Discounted cash flows Beta 0.6 - 1.6 (1.1) (2) (1) Unobservable inputs were weighted by their relative fair value of the instruments. (2) Unobservable inputs were not weighted as only one instrument exists. Recurring Significant Unobservable Inputs Home equity. The most significant unobservable inputs used in the fair value measurement of the home equity loans are discount rates, constant prepayment rates, and default rates. The constant prepayment and default rates are based on a 12 month historical average. Significant increases (decreases) in the discount rate in isolation result in a significantly lower (higher) fair value measurement. Increases (decreases) in prepay rates in isolation result in a higher (lower) fair value and increases (decreases) in default rates in isolation result in a lower (higher) fair value. MSRs. The significant unobservable inputs used in the fair value measurement of the MSRs are option adjusted spreads, prepayment rates, and cost to service. Significant increases (decreases) in all three assumptions in isolation result in a significantly lower (higher) fair value measurement. Weighted average life (in years) is used to determine the change in fair value of MSRs. For March 31, 2019 and December 31, 2018 , the weighted average life (in years) for the entire MSR portfolio was 4.5 and 5.2 , respectively. DOJ litigation settlement. The significant unobservable input used in the fair value measurement of the DOJ litigation settlement are the discount rate and asset growth rate, in addition to those assumptions discussed in Note 16 - Legal Proceedings, Contingencies and Commitments. Significant increases (decreases) in the discount rate or asset growth rate in isolation may result in a marginally lower (higher) fair value measurement. For further information on the fair value inputs related to the DOJ litigation settlement, see Note 16 - Legal Proceedings, Contingencies, and Commitments. Rate lock commitments. The significant unobservable input used in the fair value measurement of the rate lock commitments is the pull through rate. The pull through rate is a statistical analysis of our actual rate lock fallout history to determine the sensitivity of the residential mortgage loan pipeline compared to interest rate changes and other deterministic values. New market prices are applied based on updated loan characteristics and new fallout ratios (i.e., the inverse of the pull through rate) are applied accordingly. Significant increases (decreases) in the pull through rate in isolation result in a significantly higher (lower) fair value measurement. Contingent consideration. The significant unobservable input used in the fair value of the contingent consideration is future forecasted target production volumes and profitability of the division. An increase or decrease to these inputs results in an increase or decrease of the liability. Other unobservable inputs include Beta and volatility which drive the risk adjusted discount rate utilized in a Monte Carlo simulation. Increases (decreases) in these inputs results in a lower (higher) to the liability. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis We also have assets that are subject to measurement at fair value on a nonrecurring basis under certain conditions. The following table presents assets measured at fair value on a nonrecurring basis: Total (1) Level 2 Level 3 Gains (Losses) (Dollars in millions) March 31, 2019 Loans held-for-sale (2) $ 7 $ 7 $ — $ (1 ) Impaired loans held-for-investment (2) Residential first mortgage loans 13 — 13 (5 ) Repossessed assets (3) 8 8 (3 ) Totals $ 28 $ 7 $ 21 $ (9 ) December 31, 2018 Loans held-for-sale (2) $ 5 $ 5 $ — $ (1 ) Impaired loans held-for-investment (2) Residential first mortgage loans 12 — 12 (4 ) Repossessed assets (3) 7 — 7 (3 ) Totals $ 24 $ 5 $ 19 $ (8 ) (1) The fair values are determined at various dates during the three months ended March 31, 2019 and the year ended December 31, 2018 , respectively. (2) Gains (losses) reflect fair value adjustments on assets for which we did not elect the fair value option. (3) Gains (losses) reflect write downs of repossessed assets based on the estimated fair value of the specific assets. The following table presents the quantitative information about nonrecurring Level 3 fair value financial instruments and the fair value measurements: Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) March 31, 2019 Impaired loans held-for-investment Loans held-for-investment $ 13 Fair value of collateral Loss severity discount 25% - 30% (26.7%) (1) Repossessed assets $ 8 Fair value of collateral Loss severity discount 0% - 100% (23.3%) (1) December 31, 2018 Impaired loans held-for-investment Loans held-for-investment $ 12 Fair value of collateral Loss severity discount 25% - 30% (28.3%) (1) Repossessed assets $ 7 Fair value of collateral Loss severity discount 0% - 100% (25.8%) (1) (1) Unobservable inputs were weighted by their relative fair value of the instruments. Nonrecurring Significant Unobservable Inputs The significant unobservable inputs used in the fair value measurement of the impaired loans and repossessed assets are appraisals or other third-party price evaluations which incorporate measures such as recent sales prices for comparable properties. Fair Value of Financial Instruments The following table presents the carrying amount and estimated fair value of financial instruments that are carried either at fair value, cost, or amortized cost: March 31, 2019 Estimated Fair Value Carrying Value Total Level 1 Level 2 Level 3 (Dollars in millions) Assets Cash and cash equivalents $ 390 $ 390 $ 390 $ — $ — Investment securities available-for-sale 2,142 2,142 — 2,142 — Investment securities held-to-maturity 683 666 — 666 — Loans held-for-sale 3,874 3,874 — 3,874 — Loans held-for-investment 9,936 10,093 — 8 10,085 Loans with government guarantees 470 451 — 451 — Mortgage servicing rights 278 278 — — 278 Federal Home Loan Bank stock 303 303 — 303 — Bank owned life insurance 342 342 — 342 — Repossessed assets 8 8 — — 8 Other assets, foreclosure claims 53 53 — 53 — Derivative financial instruments, assets 57 57 — 20 37 Liabilities Retail deposits Demand deposits and savings accounts $ (6,431 ) $ (5,529 ) $ — $ (5,529 ) $ — Certificates of deposit (2,584 ) (2,590 ) — (2,590 ) — Wholesale deposits (467 ) (468 ) — (468 ) — Government deposits (1,187 ) (1,116 ) — (1,116 ) — Custodial deposits (2,784 ) (2,738 ) — (2,738 ) — Federal Home Loan Bank advances (3,351 ) (3,343 ) — (3,343 ) — Long-term debt (495 ) (459 ) — (459 ) — DOJ litigation settlement (60 ) (60 ) — — (60 ) Contingent consideration (6 ) (6 ) — — (6 ) Derivative financial instruments, liabilities (46 ) (46 ) — (46 ) — December 31, 2018 Estimated Fair Value Carrying Value Total Level 1 Level 2 Level 3 (Dollars in millions) Assets Cash and cash equivalents $ 408 $ 408 $ 408 $ — $ — Investment securities available-for-sale 2,142 2,142 — 2,142 — Investment securities held-to-maturity 703 681 — 681 — Loans held-for-sale 3,869 3,870 — 3,870 — Loans held-for-investment 9,088 8,966 — 8 8,958 Loans with government guarantees 392 374 — 374 — Mortgage servicing rights 290 290 — — 290 Federal Home Loan Bank stock 303 303 — 303 — Bank owned life insurance 340 340 — 340 — Repossessed assets 7 7 — — 7 Other assets, foreclosure claims 50 50 — 50 — Derivative financial instruments, assets 57 47 — 27 20 Liabilities Retail deposits Demand deposits and savings accounts $ (6,431 ) $ (5,475 ) $ — $ (5,475 ) $ — Certificates of deposit (2,584 ) (2,379 ) — (2,379 ) — Wholesale deposits (583 ) (585 ) — (585 ) — Government deposits (1,187 ) (1,145 ) — (1,145 ) — Custodial deposits (2,784 ) (1,664 ) — (1,664 ) — Federal Home Loan Bank advances (3,351 ) (3,383 ) — (3,383 ) — Long-term debt (495 ) (463 ) — (463 ) — DOJ litigation settlement (60 ) (60 ) — — (60 ) Contingent consideration (6 ) (6 ) — — (6 ) Derivative financial instruments, liabilities (46 ) (39 ) — (39 ) — Fair Value Option We elected the fair value option for certain items as discussed throughout the Notes to the Consolidated Financial Statements to more closely align the accounting method with the underlying economic exposure. Interest income on LHFS is accrued on the principal outstanding primarily using the "simple-interest" method. The following table reflects the change in fair value included in earnings of financial instruments for which the fair value option has been elected: Three Months Ended March 31, 2019 2018 (Dollars in millions) Assets Loans held-for-sale Net gain (loss) on loan sales $ 79 $ (88 ) The following table reflects the difference between the aggregate fair value and aggregate remaining contractual principal balance outstanding for assets and liabilities for which the fair value option has been elected: March 31, 2019 December 31, 2018 Unpaid Principal Balance Fair Value Fair Value Over / (Under) Unpaid Principal Balance Unpaid Principal Balance Fair Value Fair Value Over / (Under) Unpaid Principal Balance (Dollars in millions) Assets Nonaccrual loans Loans held-for-sale $ 8 $ 8 $ — $ 6 $ 6 $ — Loans held-for-investment 4 3 (1 ) 4 3 (1 ) Total nonaccrual loans $ 12 $ 11 $ (1 ) $ 10 $ 9 $ (1 ) Other performing loans Loans held-for-sale $ 3,698 $ 3,838 $ 140 $ 3,601 $ 3,726 $ 125 Loans held-for-investment 8 7 (1 ) 8 7 (1 ) Total other performing loans $ 3,706 $ 3,845 $ 139 $ 3,609 $ 3,733 $ 124 Total loans Loans held-for-sale $ 3,706 $ 3,846 $ 140 $ 3,607 $ 3,732 $ 125 Loans held-for-investment 12 10 (2 ) 12 10 (2 ) Total loans $ 3,718 $ 3,856 $ 138 $ 3,619 $ 3,742 $ 123 Liabilities Litigation settlement (1) $ (118 ) $ (60 ) $ 58 $ (118 ) $ (60 ) $ 58 (1) We are obligated to pay $118 million in installment payments upon meeting certain performance conditions, as described in Note 16 - Legal Proceedings, Contingencies and Commitments.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information Our operations are conducted through three operating segments: Community Banking, Mortgage Originations, and Mortgage Servicing. The Other segment includes the remaining reported activities. Operating segments are defined as components of an enterprise that engage in business activity from which revenues are earned and expenses are incurred for which discrete financial information is available that is evaluated regularly by executive management in deciding how to allocate resources and in assessing performance. The operating segments have been determined based on the products and services offered and reflect the manner in which financial information is currently evaluated by management. Each segment operates under the same banking charter, but is reported on a segmented basis for this report. Each of the operating segments is complementary to each other and because of the interrelationships of the segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. As a result of Management's evaluation of our segments, effective January 1, 2019, certain departments have been re-aligned between the Community Banking and Other segment. The income and expenses relating to these changes are reflected in our financial statements and all prior period segment financial information has been recast to conform to the current presentation. The Community Banking segment originates loans, provides deposits and fee based services to consumer, business, and mortgage lending customers through its Branch Banking, Business Banking and Commercial Banking, Government Banking, Warehouse Lending and LHFI Portfolio groups. Products offered through these groups include checking accounts, savings accounts, money market accounts, certificates of deposit, consumer loans, commercial loans, commercial real estate loans, equipment finance and leasing, home builder finance loans and warehouse lines of credit. Other financial services available include consumer and corporate card services, customized treasury management solutions, merchant services and capital markets services such as loan syndications, and investment and insurance products and services. Within the Community Banking segment, revenue from contracts with customers includes deposit account and other banking income, interchange fees and investment and insurance income. During the three months ended March 31, 2019 , deposit account and other banking income, which includes fees for outgoing wires, overdrafts, stop payments and ATM fees totaled $6 million , interchange fees totaled $3 million , and investment and insurance income totaled $1 million . These fees are recognized when obligations, under the terms of the contract with our customer, are satisfied, which generally occurs when services are performed. Revenue is measured as the amount of consideration we expect to receive in exchange for providing services. At March 31, 2019 and December 31, 2018 , we had no significant revenue related receivables or contract liabilities. The Mortgage Originations segment originates and acquires one-to-four family residential mortgage loans to sell or hold on our balance sheet. Loans originated-to-sell, comprise the majority of the lending activity. These loans are originated through mortgage branches, call centers, the Internet and third party counterparties. The Mortgage Origination segment recognizes interest income on loans that are held for sale and the gains from sales associated with these loans, whereas the interest income on LHFI and a loss on sales for the purchase of these loans is recognized in the Community Banking segment. The Mortgage Servicing segment services and subservices mortgage and other consumer loans for others on a fee for service basis and may also collect ancillary fees and earn income through the use of noninterest-bearing escrows. Revenue for those serviced and subserviced loans is earned on a contractual fee basis, with the fees varying based on our responsibilities and the status of the underlying loans. The Mortgage Servicing segment also services loans for our LHFI portfolio in the Community Banking segment and our own LHFS portfolio in the Mortgage Originations segment, for which it earns revenue via an intercompany service fee allocation. The Other segment includes the treasury functions, which include the impact of interest rate risk management, balance sheet funding activities and the administration of the investment securities portfolios, as well as miscellaneous other expenses of a corporate nature. In addition, the Other segment includes revenue and expenses related to treasury and corporate assets and liabilities and equity not directly assigned or allocated to the Community Banking, Mortgage Originations or Mortgage Servicing operating segments. Revenues are comprised of net interest income (before the provision (benefit) for loan losses) and noninterest income. Noninterest expenses and provision (benefit) for income taxes, are fully allocated to each operating segment. Allocation methodologies may be subject to periodic adjustment as the internal management accounting system is revised and the business or product lines within the segments change. The following tables present financial information by business segment for the periods indicated: Three Months Ended March 31, 2019 Community Banking Mortgage Originations Mortgage Servicing Other (1) Total (Dollars in millions) Summary of Operations Net interest income $ 103 $ 23 $ 3 $ (3 ) $ 126 Net gain (loss) on loan sales (6 ) 55 — — 49 Other noninterest income (loss) 12 16 35 (3 ) 60 Total net interest income and noninterest income (loss) 109 94 38 (6 ) 235 (Provision) benefit for loan losses (1 ) — — 1 — Compensation and benefits (24 ) (24 ) (6 ) (33 ) (87 ) Other noninterest expense and directly allocated overhead (41 ) (36 ) (25 ) (2 ) (104 ) Total noninterest expense (65 ) (60 ) (31 ) (35 ) (191 ) Income (loss) before indirect overhead allocations and income taxes 43 34 7 (40 ) 44 Overhead allocations (10 ) (10 ) (5 ) 25 — (Provision) benefit for income taxes (7 ) (5 ) — 4 (8 ) Net income (loss) $ 26 $ 19 $ 2 $ (11 ) $ 36 Intersegment (expense) revenue $ (4 ) $ 7 $ 6 $ (9 ) $ — Average balances Loans held-for-sale $ 71 $ 3,195 $ — $ — $ 3,266 Loans with government guarantees — 455 — — 455 Loans held-for-investment (2) 9,156 12 — 29 9,197 Total assets 9,577 4,624 56 4,181 18,438 Deposits 9,983 — 2,528 395 12,906 (1) Includes offsetting adjustments made to reclassify income and expenses relating to operating leases and custodial deposits for subservicing clients. (2) Includes adjustment made to reclassify operating lease assets to loans held-for-investment. Three Months Ended March 31, 2018 Community Banking Mortgage Originations Mortgage Servicing Other (1) Total (Dollars in millions) Summary of Operations Net interest income $ 69 $ 31 $ 2 $ 4 $ 106 Net gain (loss) on loan sales (2 ) 62 — — 60 Other noninterest income 8 19 19 5 51 Total net interest income and noninterest income 75 112 21 9 217 (Provision) benefit for loan losses (1 ) — — 1 — Compensation and benefits (17 ) (29 ) (4 ) (30 ) (80 ) Other noninterest expense and directly allocated overhead (26 ) (41 ) (16 ) (10 ) (93 ) Total noninterest expense (43 ) (70 ) (20 ) (40 ) (173 ) Income (loss) before indirect overhead allocations and income taxes 31 42 1 (30 ) 44 Overhead allocations (11 ) (18 ) (5 ) 34 — (Provision) benefit for income taxes (4 ) (5 ) — — (9 ) Net income (loss) $ 16 $ 19 $ (4 ) $ 4 $ 35 Intersegment (expense) revenue $ (1 ) $ — $ 5 $ (4 ) $ — Average balances Loans held-for-sale $ 12 $ 4,219 $ — $ — $ 4,231 Loans with government guarantees — 291 — — 291 Loans held-for-investment (2) 7,489 6 — 29 7,524 Total assets 7,638 5,527 35 3,890 17,090 Deposits 7,739 — 1,541 91 9,371 (1) Includes offsetting adjustments made to reclassify income and expenses relating to operating leases and custodial deposits for subservicing clients. (2) Includes adjustment made to reclassify operating lease assets to loans held-for-investment.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Adoption of New Accounting Standards The following ASUs have been adopted which impact our significant accounting policies and/or have a significant financial impact: Leases - In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) which supersedes Topic 840. The guidance requires lessees to recognize substantially all leases on their balance sheet as a right-of-use asset and a lease liability. Effective January 1, 2019, we have adopted the requirements of ASU 2016-02, Leases (Topic 842) and all related amendments. The Company has elected to apply the practical expedient of forgoing the restatement of comparative periods. In addition, we have elected the practical expedients permitted under transition guidance to not reassess leases entered into prior to adoption. As permitted under ASC 842, the Company has made an accounting policy election to exempt leases with an initial term of twelve months or less from balance sheet recognition. Instead, short-term leases will be expensed over the lease term with no impact to the balance sheet. At March 31, 2019 , our inventory of leases included various bank branches, ATM locations and retail home lending offices. Many of our leases contain options to extend or terminate early and we consider these options when evaluating the lease term to determine if they are reasonably certain to exercise based on all relevant economic and financial factors. All leases are classified as operating leases based on their terms. The following table reflects information relating to our operating leases: As of/For the Three Months Ended March 31, 2019 (Dollars in millions) Operating Leases Right-of-use asset (1) $ 20 Lease liability (1) $ 20 Lease expense (2) $ 3 Weighted-average remaining lease term (years) 4.2 Weighted-average discount rate 2.95 % (1) Right-of-use asset and lease liability are recorded in premises and equipment and other liabilities, respectively, on the Consolidated Statements of Financial Condition. (2) Includes de-minimis amount of short-term lease expense and variable lease expense. The following table presents our undiscounted cash flows on our operating lease liabilities as of March 31, 2019 and our minimum contractual obligations on our operating leases as of December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in millions) Within one year $ 8 $ 9 After one year and within two years 5 6 After two years and within three years 4 4 After three years and within four years 2 2 After four years and within five years 1 1 After five years 2 3 Total (1) $ 22 $ 25 (1) The difference between the total undiscounted cash payments on operating leases and the lease liability is solely the effect of discounting. We adopted the following accounting standard updates (ASU) during 2019 , none of which had a material impact to our financial statements: Standard Description Effective Date ASU 2019-01 Leases (Topic 842): Codification Improvements January 1, 2019 ASU 2018-20 Leases (Topic 842): Narrow-Scope Improvements for Lessors January 1, 2019 ASU 2018-16 Derivatives and hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes January 1, 2019 ASU 2018-11 Leases (Topic 842): Targeted Improvements January 1, 2019 ASU 2018-10 Codification Improvements to Topic 842, Leases January 1, 2019 ASU 2018-07 Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 1, 2019 ASU 2017-11 Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Non-controlling Interests with a Scope. January 1, 2019 ASU 2017-08 Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities January 1, 2019 ASU 2017-06 Plan Accounting - Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plans (Topic 962), Health and Welfare Benefit Plans (Topic 965): Employee Benefit Plan Master Trust Reporting January 1, 2019 Accounting Standards Issued But Not Yet Adopted The following ASUs have been issued and are expected to result in a significant change to our significant accounting policies and/or have a significant financial impact: Credit Losses - In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326). The ASU alters the current method for recognizing credit losses within the reserve account. Currently, we use the incurred loss method, whereas the new guidance requires financial assets to be presented at the net amount expected to be collected (i.e., net of expected credit losses). The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019. Our cross-functional implementation team continues to execute on its project plan and has been working with an industry leading vendor to finalize the development of our credit loss models. We expect to be capable of running a CECL parallel production process in the second half of 2019 and will be ready for the adoption of the standard in the first quarter of 2020. During the first quarter of 2019, we began to finalize our portfolio and model segmentation and we plan to prepare data for use by the models, begin model testing, and continue developing accounting internal controls around data, modeling, and CECL governance in the second quarter of 2019. We are currently evaluating the impact the adoption of the guidance will have on our Consolidated Financial Statements, and highlight that any impact will be contingent upon the underlying characteristics of the affected portfolio and macroeconomic and internal forecasts at adoption date. We do not expect any material allowance on held to maturity securities since the majority of this portfolio consists of agency-backed securities that have an immaterial risk of credit loss. The following ASUs have been issued and are not expected to have a material impact on our Consolidated Financial Statements and/or significant accounting policies: Standard Description Effective Date ASU 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses January 1, 2020 ASU 2018-18 Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606 January 1, 2020 ASU 2018-17 Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities January 1, 2020 ASU 2018-15 Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) January 1, 2020 ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment January 1, 2020

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Subsequent to March 31, 2019 , we became aware that one of our commercial borrowers was unexpectedly ceasing their reverse mortgage origination business. The following table presents our credit exposure to this borrower. March 31, 2019 May 10, 2019 (Dollars in millions) Amount outstanding Collateralized C&I loan $ 69 $ 69 Outstanding warehouse line, collateralized by agency mortgage loans 6 13 Total $ 75 $ 82 The commercial loan is collateralized by certain interest-only GNMA securities, held by a third party custodian. A recent independent valuation conducted by us indicates that this collateral has a fair value between $35 and $40 million . While it is too early to determine the extent of the loss we may have on this loan, we plan to pursue all available sources of collection including other assets of the company, a personal guarantee and other legal remedies to minimize our credit exposure related to this loan. We will determine and record the appropriate carrying value during the second quarter of 2019 . We expect to be fully repaid on the outstanding warehouse line and no further draws on this line can be made.

Recently Issued Accounting Pr_2

Recently Issued Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Credit Quality	Credit Quality We utilize an internal risk rating system which is applied to all consumer and commercial loans. Descriptions of our internal risk ratings as they relate to credit quality follow the ratings used by the U.S. bank regulatory agencies as listed below. Pass. Pass assets are not impaired nor do they have any known deficiencies that could impact the quality of the asset. Watch. Watch assets are defined as pass rated assets that exhibit elevated risk characteristics or other factors that deserve management’s close attention and increased monitoring. However, the asset does not exhibit a potential or well-defined weakness that would warrant a downgrade to criticized or adverse classification. Special mention. Assets identified as special mention possess credit deficiencies or potential weaknesses deserving management's close attention. Special mention assets have a potential weakness or pose an unwarranted financial risk that, if not corrected, could weaken the assets and increase risk in the future. Special mention assets are criticized, but do not expose an institution to sufficient risk to warrant adverse classification. Substandard . Assets identified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the full collection or liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. For home equity loans and other consumer loans, we evaluate credit quality based on the aging and status of payment activity and any other known credit characteristics that call into question full repayment of the asset. Substandard loans may be placed on either accrual or non-accrual status. Doubtful . An asset classified as doubtful has all the weaknesses inherent in one classified substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. A doubtful asset has a high probability of total or substantial loss, but because of specific pending events that may strengthen the asset, its classification as loss is deferred. Doubtful borrowers are usually in default, lack adequate liquidity or capital, and lack the resources necessary to remain an operating entity. Pending events can include mergers, acquisitions, liquidations, capital injections, the perfection of liens on additional collateral, the valuation of collateral, and refinancing. Generally, pending events should be resolved within a relatively short period and the ratings will be adjusted based on the new information. Due to the high probability of loss, doubtful assets are placed on non-accrual. Loss. An asset classified as loss is considered uncollectible and of such little value that the continuance as a bankable asset is not warranted. This classification does not mean that an asset has absolutely no recovery or salvage value, but, rather that it is not practical or desirable to defer writing off the asset even though partial recovery may be affected in the future. Consumer Loans Consumer loans consist of open and closed end loans extended to individuals for household, family, and other personal expenditures, and includes consumer loans, and loans to individuals secured by their personal residence, including first mortgage, home equity, and home improvement loans. Because consumer loans are usually relatively small-balance, homogeneous exposures, consumer loans are rated primarily on payment performance. Payment performance is a proxy for the strength of repayment capacity and loans are generally classified based on their payment status rather than by an individual review of each loan. In accordance with regulatory guidance, we assign risk ratings to consumer loans in the following manner: • Consumer loans are classified as Watch once the loan becomes 60 days past due. • Open and closed-end consumer loans 90 days or more past due are classified Substandard. Commercial Loans Management conducts periodic examinations which serve as an independent verification of the accuracy of the ratings assigned. Loan grades are based on different factors within the borrowing relationship: entity sales, debt service coverage, debt/total net worth, liquidity, balance sheet and income statement trends, management experience, business stability, financing structure, and financial reporting requirements. The underlying collateral is also rated based on the specific type of collateral and corresponding LTV. The combination of the borrower and collateral risk ratings results in the final rating for the borrowing relationship.
Derivative Financial Instruments	Derivative financial instruments are recorded at fair value in other assets and other liabilities on the Consolidated Statements of Financial Condition. Our policy is to present its derivative assets and derivative liabilities on the Consolidated Statement of Financial Condition on a gross basis, even when provisions allowing for set-off are in place. However, for derivative contracts cleared through certain central clearing parties, variation margin payments are recognized as settlements. We are exposed to non-performance risk by the counterparties to our various derivative financial instruments. A majority of our derivatives are centrally cleared through a Central Counterparty Clearing House or consist of residential mortgage interest rate lock commitments further limiting our exposure to non-performance risk. We believe that the non-performance risk inherent in our remaining derivative contracts is minimal based on credit standards and the collateral provisions of the derivative agreements. Derivatives not designated as hedging instruments: We maintain a derivative portfolio of interest rate swaps, futures and forward commitments used to manage exposure to changes in interest rates, MSR asset values and to meet the needs of customers. We also enter into interest rate lock commitments, which are commitments to originate mortgage loans whereby the interest rate on the loan is determined prior to funding and the customers have locked into that interest rate. Market risk on interest rate lock commitments and mortgage LHFS is managed using corresponding forward sale commitments. Changes in fair value of derivatives not designated as hedging instruments are recognized in the Consolidated Statements of Income. Derivatives designated as hedging instruments: We have designated certain interest rate swaps as fair value hedges of fixed rate certificates of deposit. Derivatives that are designated in hedging relationships are assessed for effectiveness using regression analysis at inception and throughout the hedge period. All designated hedge relationships were and are expected to be highly effective as of March 31, 2019 . Cash flows and the profit impact associated with designated hedges are reported in the same category as the underlying hedged item.
Fair Value Measurements	We utilize fair value measurements to record or disclose the fair value on certain assets and liabilities. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability through an orderly transaction between market participants at the measurement date. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, we use present value techniques and other valuation methods to estimate the fair values of our financial instruments. These valuation models rely on market-based parameters when available, such as interest rate yield curves or credit spreads. Unobservable inputs may be based on management's judgment, assumptions and estimates related to credit quality, our future earnings, interest rates and other relevant inputs. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used.
Recently Issued Accounting Pronouncements	Adoption of New Accounting Standards The following ASUs have been adopted which impact our significant accounting policies and/or have a significant financial impact: Leases - In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) which supersedes Topic 840. The guidance requires lessees to recognize substantially all leases on their balance sheet as a right-of-use asset and a lease liability. Effective January 1, 2019, we have adopted the requirements of ASU 2016-02, Leases (Topic 842) and all related amendments. The Company has elected to apply the practical expedient of forgoing the restatement of comparative periods. In addition, we have elected the practical expedients permitted under transition guidance to not reassess leases entered into prior to adoption. As permitted under ASC 842, the Company has made an accounting policy election to exempt leases with an initial term of twelve months or less from balance sheet recognition. Instead, short-term leases will be expensed over the lease term with no impact to the balance sheet. At March 31, 2019 , our inventory of leases included various bank branches, ATM locations and retail home lending offices. Many of our leases contain options to extend or terminate early and we consider these options when evaluating the lease term to determine if they are reasonably certain to exercise based on all relevant economic and financial factors. All leases are classified as operating leases based on their terms. The following table reflects information relating to our operating leases: As of/For the Three Months Ended March 31, 2019 (Dollars in millions) Operating Leases Right-of-use asset (1) $ 20 Lease liability (1) $ 20 Lease expense (2) $ 3 Weighted-average remaining lease term (years) 4.2 Weighted-average discount rate 2.95 % (1) Right-of-use asset and lease liability are recorded in premises and equipment and other liabilities, respectively, on the Consolidated Statements of Financial Condition. (2) Includes de-minimis amount of short-term lease expense and variable lease expense. The following table presents our undiscounted cash flows on our operating lease liabilities as of March 31, 2019 and our minimum contractual obligations on our operating leases as of December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in millions) Within one year $ 8 $ 9 After one year and within two years 5 6 After two years and within three years 4 4 After three years and within four years 2 2 After four years and within five years 1 1 After five years 2 3 Total (1) $ 22 $ 25 (1) The difference between the total undiscounted cash payments on operating leases and the lease liability is solely the effect of discounting. We adopted the following accounting standard updates (ASU) during 2019 , none of which had a material impact to our financial statements: Standard Description Effective Date ASU 2019-01 Leases (Topic 842): Codification Improvements January 1, 2019 ASU 2018-20 Leases (Topic 842): Narrow-Scope Improvements for Lessors January 1, 2019 ASU 2018-16 Derivatives and hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes January 1, 2019 ASU 2018-11 Leases (Topic 842): Targeted Improvements January 1, 2019 ASU 2018-10 Codification Improvements to Topic 842, Leases January 1, 2019 ASU 2018-07 Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 1, 2019 ASU 2017-11 Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Non-controlling Interests with a Scope. January 1, 2019 ASU 2017-08 Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities January 1, 2019 ASU 2017-06 Plan Accounting - Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plans (Topic 962), Health and Welfare Benefit Plans (Topic 965): Employee Benefit Plan Master Trust Reporting January 1, 2019 Accounting Standards Issued But Not Yet Adopted The following ASUs have been issued and are expected to result in a significant change to our significant accounting policies and/or have a significant financial impact: Credit Losses - In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326). The ASU alters the current method for recognizing credit losses within the reserve account. Currently, we use the incurred loss method, whereas the new guidance requires financial assets to be presented at the net amount expected to be collected (i.e., net of expected credit losses). The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019. Our cross-functional implementation team continues to execute on its project plan and has been working with an industry leading vendor to finalize the development of our credit loss models. We expect to be capable of running a CECL parallel production process in the second half of 2019 and will be ready for the adoption of the standard in the first quarter of 2020. During the first quarter of 2019, we began to finalize our portfolio and model segmentation and we plan to prepare data for use by the models, begin model testing, and continue developing accounting internal controls around data, modeling, and CECL governance in the second quarter of 2019. We are currently evaluating the impact the adoption of the guidance will have on our Consolidated Financial Statements, and highlight that any impact will be contingent upon the underlying characteristics of the affected portfolio and macroeconomic and internal forecasts at adoption date. We do not expect any material allowance on held to maturity securities since the majority of this portfolio consists of agency-backed securities that have an immaterial risk of credit loss. The following ASUs have been issued and are not expected to have a material impact on our Consolidated Financial Statements and/or significant accounting policies: Standard Description Effective Date ASU 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses January 1, 2020 ASU 2018-18 Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606 January 1, 2020 ASU 2018-17 Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities January 1, 2020 ASU 2018-15 Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) January 1, 2020 ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment January 1, 2020

Acquisitions (Tables)

Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Preliminary Purchase Price Allocation to the Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary allocation of the purchase price to the fair value of assets acquired and liabilities assumed as of the acquisition date. We deem the initial valuation of the assets and liabilities to be provisional and have left the measurement period open. These fair values may be adjusted in a future period, not to exceed one year after the acquisition date, to reflect new facts and circumstances which existed as of the acquisition date. November 30, 2018 (Dollars in millions) Assets acquired: Cash $ 9 Loans 107 Core deposit intangible (CDI) 60 Other assets 26 Total assets 202 Liabilities assumed: Deposits 1,761 Total liabilities 1,761 Fair value of net assets acquired (1,559 ) Cash consideration received (1,501 ) Goodwill $ 58
Pro Forma Information	The following table presents unaudited pro forma information as if the acquisition of the Wells Fargo branches had occurred on January 1, 2017. This pro forma information includes certain adjustments and assumptions, including but not limited to, reclassifications from 2018 net income to 2017 net income related to the acquisition-related expenses of $16 million and hedging gains of $29 million . The pro forma information is not necessarily indicative of the results of operations that would have occurred had the transaction been completed on the assumed date. For the Year Ended 2018 2017 (Dollars in millions) Net interest income $ 540 $ 482 Net income $ 196 $ 82

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of Investment Securities	The following table presents our investment securities: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in millions) March 31, 2019 Available-for-sale securities Agency - Commercial $ 1,404 $ 6 $ (34 ) $ 1,376 Agency - Residential 664 — (15 ) 649 Corporate debt obligations 53 — — 53 Municipal obligations 32 — — 32 Other MBS 31 — — 31 Certificate of deposits 1 — — 1 Total available-for-sale securities (1) $ 2,185 $ 6 $ (49 ) $ 2,142 Held-to-maturity securities Agency - Commercial $ 339 $ — $ (13 ) $ 326 Agency - Residential 344 — (4 ) 340 Total held-to-maturity securities (1) $ 683 $ — $ (17 ) $ 666 December 31, 2018 Available-for-sale securities Agency - Commercial $ 1,413 $ 4 $ (43 ) $ 1,374 Agency - Residential 686 — (24 ) 662 Corporate debt obligations 41 — — 41 Municipal obligations 33 — (1 ) 32 Other MBS 32 — — 32 Certificate of Deposits 1 — — 1 Total available-for-sale securities (1) $ 2,206 $ 4 $ (68 ) $ 2,142 Held-to-maturity securities Agency - Commercial $ 349 $ — $ (13 ) $ 336 Agency - Residential 354 — (9 ) 345 Total held-to-maturity securities (1) $ 703 $ — $ (22 ) $ 681 (1) There were no securities of a single issuer, which are not governmental or government-sponsored, that exceeded 10 percent of stockholders’ equity at March 31, 2019 or December 31, 2018 .
Summary of Unrealized Loss Positions on Investment Securities - Available-for-Sale	The following table summarizes, by duration, the unrealized loss positions on investment securities: Unrealized Loss Position with Duration 12 Months and Over Unrealized Loss Position with Duration Under 12 Months Fair Value Number of Securities Unrealized Loss Fair Value Number of Securities Unrealized Loss (Dollars in millions) March 31, 2019 Available-for-sale securities Agency - Commercial $ 1,011 73 $ (34 ) $ 21 3 $ — Agency - Residential 624 78 (15 ) — — — Municipal obligations 27 14 — — — — Corporate debt obligations — — — 11 3 — Other MBS — — — 16 2 — Held-to-maturity securities Agency - Commercial $ 326 26 $ (13 ) $ — — $ — Agency - Residential 306 55 (4 ) — — — December 31, 2018 Available-for-sale securities Agency - Commercial $ 1,025 74 $ (43 ) $ 1 1 $ — Agency - Residential 647 79 (24 ) 14 5 — Municipal obligations 28 16 (1 ) 1 2 — Corporate debt obligations — — — 7 2 — Held-to-maturity securities Agency - Commercial $ 336 26 $ (13 ) $ — — $ — Agency - Residential 345 60 (9 ) — — —
Summary of Unrealized Loss Positions on Investment Securities - Held-to-Maturity	The following table summarizes, by duration, the unrealized loss positions on investment securities: Unrealized Loss Position with Duration 12 Months and Over Unrealized Loss Position with Duration Under 12 Months Fair Value Number of Securities Unrealized Loss Fair Value Number of Securities Unrealized Loss (Dollars in millions) March 31, 2019 Available-for-sale securities Agency - Commercial $ 1,011 73 $ (34 ) $ 21 3 $ — Agency - Residential 624 78 (15 ) — — — Municipal obligations 27 14 — — — — Corporate debt obligations — — — 11 3 — Other MBS — — — 16 2 — Held-to-maturity securities Agency - Commercial $ 326 26 $ (13 ) $ — — $ — Agency - Residential 306 55 (4 ) — — — December 31, 2018 Available-for-sale securities Agency - Commercial $ 1,025 74 $ (43 ) $ 1 1 $ — Agency - Residential 647 79 (24 ) 14 5 — Municipal obligations 28 16 (1 ) 1 2 — Corporate debt obligations — — — 7 2 — Held-to-maturity securities Agency - Commercial $ 336 26 $ (13 ) $ — — $ — Agency - Residential 345 60 (9 ) — — —
Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity	The following table shows the amortized cost and estimated fair value of securities by contractual maturity: Investment Securities Available-for-Sale Investment Securities Held-to-maturity Amortized Cost Fair Value Weighted Average Yield Amortized Cost Fair Value Weighted Average Yield (Dollars in millions) March 31, 2019 Due in one year or less $ 1 $ 1 1.50 % $ — $ — — % Due after one year through five years 60 60 2.51 % 10 10 2.45 % Due after five years through 10 years 74 74 4.44 % 10 10 2.24 % Due after 10 years 2,050 2,007 2.68 % 663 646 2.46 % Total $ 2,185 $ 2,142 $ 683 $ 666

Loans Held-for-Investment (Tabl

Loans Held-for-Investment (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Summary of Loans Held-for-Investment and UPB of Loan Sales and Purchases in the Loans Held-for-Investment Portfolio	The following table presents our loans held-for-investment: March 31, 2019 December 31, 2018 (Dollars in millions) Consumer loans Residential first mortgage $ 3,100 $ 2,999 Home equity 796 731 Other 433 314 Total consumer loans 4,329 4,044 Commercial loans Commercial real estate 2,324 2,152 Commercial and industrial 1,651 1,433 Warehouse lending 1,632 1,459 Total commercial loans 5,607 5,044 Total loans held-for-investment $ 9,936 $ 9,088 The following table presents the UPB of our loan sales and purchases in the loans held-for-investment portfolio: Three Months Ended March 31, 2019 2018 (Dollars in millions) Loans Sold (1) Performing loans (2) $ 102 $ — Total loans sold $ 102 $ — Net gain associated with loan sales (3) $ 2 $ — Loans Purchased Home equity $ 49 $ — Other consumer 51 — Total loans purchased $ 100 $ — Premium associated with loans purchased $ 3 $ — (1) Upon a change in our intent, the loans were transferred to LHFS and subsequently sold. (2) During the three months ended December 31, 2018, we entered into an agreement to sell these loans, which we subsequently settled on during the three months ended March 31, 2019 . (3) Recorded in net gain on loan sales on Consolidated Statements of Operations.
Changes in ALLL and Method of Evaluation by Class of Loan	The following table presents changes in ALLL, by class of loan: Residential First Mortgage (1) Home Equity Other Consumer Commercial Real Estate Commercial and Industrial Warehouse Lending Total (Dollars in millions) Three Months Ended March 31, 2019 Beginning balance ALLL $ 38 $ 15 $ 3 $ 48 $ 18 $ 6 $ 128 Charge-offs (1 ) — (1 ) — — — (2 ) Recoveries — 1 — — — — 1 Provision (benefit) (2 ) — 2 (12 ) 12 — — Ending balance ALLL $ 35 $ 16 $ 4 $ 36 $ 30 $ 6 $ 127 Three Months Ended March 31, 2018 Beginning balance ALLL $ 47 $ 22 $ 1 $ 45 $ 19 $ 6 $ 140 Charge-offs (1 ) (1 ) — — — — (2 ) Recoveries — 1 — — — — 1 Provision (benefit) 1 (1 ) — (1 ) 1 — — Ending balance ALLL $ 47 $ 21 $ 1 $ 44 $ 20 $ 6 $ 139 (1) Includes loans with government guarantees. The following table sets forth the method of evaluation, by class of loan: Residential First Mortgage (1) Home Equity Other Consumer Commercial Real Estate Commercial and Industrial Warehouse Lending Total (Dollars in millions) March 31, 2019 Loans held-for-investment (2) Individually evaluated $ 33 $ 23 $ 1 $ — $ — $ — $ 57 Collectively evaluated 3,059 771 432 2,324 1,651 1,632 9,869 Total loans $ 3,092 $ 794 $ 433 $ 2,324 $ 1,651 $ 1,632 $ 9,926 Allowance for loan losses (2) Individually evaluated $ 4 $ 7 $ — $ — $ — $ — $ 11 Collectively evaluated 31 9 4 36 30 6 116 Total allowance for loan losses $ 35 $ 16 $ 4 $ 36 $ 30 $ 6 $ 127 December 31, 2018 Loans held-for-investment (2) Individually evaluated $ 32 $ 23 $ — $ — $ — $ — $ 55 Collectively evaluated 2,959 706 314 2,152 1,433 1,459 9,023 Total loans $ 2,991 $ 729 $ 314 $ 2,152 $ 1,433 $ 1,459 $ 9,078 Allowance for loan losses (2) Individually evaluated $ 4 $ 7 $ — $ — $ — $ — $ 11 Collectively evaluated 34 8 3 48 18 6 117 Total allowance for loan losses $ 38 $ 15 $ 3 $ 48 $ 18 $ 6 $ 128 (1) Includes allowance related to loans with government guarantees. (2) Excludes loans carried under the fair value option.
Aging Analysis of Past Due and Current Loans	The following table sets forth the LHFI aging analysis of past due and current loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due (1) Total Past Due Current Total LHFI (Dollars in millions) March 31, 2019 Consumer loans Residential first mortgage $ 3 $ 1 $ 20 $ 24 $ 3,076 $ 3,100 Home equity 1 — 3 4 792 796 Other 2 1 1 4 429 433 Total consumer loans 6 2 24 32 4,297 4,329 Commercial loans Commercial real estate — — — — 2,324 2,324 Commercial and industrial — 1 — 1 1,650 1,651 Warehouse lending — — — — 1,632 1,632 Total commercial loans — 1 — 1 5,606 5,607 Total loans (2) $ 6 $ 3 $ 24 $ 33 $ 9,903 $ 9,936 December 31, 2018 Consumer loans Residential first mortgage $ 4 $ 2 $ 19 $ 25 $ 2,974 $ 2,999 Home Equity 1 — 3 4 727 731 Other — — — — 314 314 Total consumer loans 5 2 22 29 4,015 4,044 Commercial loans Commercial real estate — — — — 2,152 2,152 Commercial and industrial — — — — 1,433 1,433 Warehouse lending — — — — 1,459 1,459 Total commercial loans — — — — 5,044 5,044 Total loans (2) $ 5 $ 2 $ 22 $ 29 $ 9,059 $ 9,088 (1) Includes less than 90 day past due performing loans which are deemed nonaccrual. Interest is not being accrued on these loans. (2) Includes $3 million of loans accounted for under the fair value option at both March 31, 2019 and December 31, 2018 .
Summary of TDRs by Type and Performing Status and Newly Modified TDRs	The following table provides a summary of TDRs by type and performing status: TDRs Performing Nonperforming Total (Dollars in millions) March 31, 2019 Consumer loans Residential first mortgage $ 22 $ 8 $ 30 Home equity 21 2 23 Total TDRs (1)(2) $ 43 $ 10 $ 53 December 31, 2018 Consumer loans Residential first mortgage $ 22 $ 8 $ 30 Home Equity 22 2 24 Total TDRs (1)(2) $ 44 $ 10 $ 54 (1) The ALLL on TDR loans totaled $10 million at both March 31, 2019 and December 31, 2018 . (2) Includes $3 million of TDR loans accounted for under the fair value option at both March 31, 2019 and December 31, 2018 . The following table provides a summary of newly modified TDRs: New TDRs Number of Accounts Pre-Modification Unpaid Principal Balance Post-Modification Unpaid Principal Balance (1) Increase in Allowance at Modification (Dollars in millions) Three Months Ended March 31, 2019 Residential first mortgages 2 $ — $ — $ — Home equity (2)(3) 2 — — — Total TDR loans 4 $ — $ — $ — Three Months Ended March 31, 2018 Residential first mortgages 6 $ 1 $ 1 $ — Home equity (2)(3) 5 1 1 — Commercial and industrial 1 5 5 1 Total TDR loans 12 $ 7 $ 7 $ 1 (1) Post-modification balances include past due amounts that are capitalized at modification date. (2) Home equity post-modification UPB reflects write downs. (3) Includes loans carried at the fair value option.
Impaired Loans	The following table presents individually evaluated impaired loans and the associated allowance: March 31, 2019 December 31, 2018 Recorded Investment Net Unpaid Principal Balance Related Allowance Recorded Investment Net Unpaid Principal Balance Related Allowance (Dollars in millions) With no related allowance recorded Consumer loans Residential first mortgage $ 16 $ 20 $ — $ 13 $ 16 $ — Home equity — 3 — 1 4 — Other consumer 1 1 — — — — Total loans with no related allowance recorded $ 17 $ 24 $ — $ 14 $ 20 $ — With an allowance recorded Consumer loans Residential first mortgage $ 18 $ 18 $ 4 $ 19 $ 20 $ 4 Home equity 22 23 7 22 23 7 Total loans with an allowance recorded $ 40 $ 41 $ 11 $ 41 $ 43 $ 11 Total Impaired loans Consumer Loans Residential first mortgage $ 34 $ 38 $ 4 $ 32 $ 36 $ 4 Home equity 22 26 7 23 27 7 Other consumer 1 1 — — — — Total impaired loans $ 57 $ 65 $ 11 $ 55 $ 63 $ 11 The following table presents average impaired loans and the interest income recognized: Three Months Ended March 31, 2019 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in millions) Consumer loans Residential first mortgage $ 34 $ — $ 33 $ — Home equity 22 — 27 1 Other consumer 1 — — — Commercial loans Commercial and industrial — — 3 — Total impaired loans $ 57 $ — $ 63 $ 1
Loan Credit Quality Indicators	March 31, 2019 Pass Watch Special Mention Substandard Total Loans (Dollars in millions) Consumer Loans Residential first mortgage $ 3,053 $ 25 $ — $ 22 $ 3,100 Home equity 771 22 — 3 796 Other consumer 431 1 — 1 433 Total consumer loans $ 4,255 $ 48 $ — $ 26 $ 4,329 Commercial Loans Commercial real estate $ 2,297 $ 20 $ 5 $ 2 $ 2,324 Commercial and industrial 1,568 19 32 32 1,651 Warehouse 1,385 232 15 — 1,632 Total commercial loans $ 5,250 $ 271 $ 52 $ 34 $ 5,607 December 31, 2018 Pass Watch Special Mention Substandard Total Loans (Dollars in millions) Consumer Loans Residential first mortgage $ 2,952 $ 28 $ — $ 19 $ 2,999 Home equity 705 23 — 3 731 Other consumer 314 — — — 314 Total consumer loans $ 3,971 $ 51 $ — $ 22 $ 4,044 Commercial Loans Commercial real estate $ 2,132 $ 14 $ 5 $ 1 $ 2,152 Commercial and industrial 1,351 53 29 — 1,433 Warehouse 1,324 120 15 — 1,459 Total commercial loans $ 4,807 $ 187 $ 49 $ 1 $ 5,044

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing [Abstract]
Changes in the Fair Value of Residential First Mortgage MSRs	Changes in the fair value of residential first mortgage MSRs were as follows: Three Months Ended March 31, 2019 2018 (Dollars in millions) Balance at beginning of period $ 290 $ 291 Additions from loans sold with servicing retained 67 84 Reductions from sales (45 ) (141 ) Changes in fair value due to (1): Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other (11 ) (5 ) Changes in estimates of fair value due to interest rate risk (2) (23 ) 10 Fair value of MSRs at end of period $ 278 $ 239 (1) Changes in fair value are included within net return on mortgage servicing rights on the Consolidated Statements of Operations. (2) Represents estimated MSR value change resulting primarily from market-driven changes which we manage through the use of derivatives.
Summary of Adverse Changes to Weighted-Average Assumptions on the Fair Value of Servicing Rights	The following table summarizes the hypothetical effect on the fair value of servicing rights using adverse changes of 10 percent and 20 percent to the weighted average of certain significant assumptions used in valuing these assets: March 31, 2019 December 31, 2018 Fair value impact due to Fair value impact due to Actual 10% adverse change 20% adverse change Actual 10% adverse change 20% adverse change (Dollars in millions) (Dollars in millions) Option adjusted spread 5.51 % $ 270 $ 266 5.42 % $ 284 $ 280 Constant prepayment rate 10.17 % 260 247 9.57 % 278 268 Weighted average cost to service per loan $ 86.11 272 269 $ 85.57 286 283
Summary of Income and Fees	The following table summarizes income and fees associated with owned mortgage servicing rights: Three Months Ended March 31, 2019 2018 (Dollars in millions) Net return on mortgage servicing rights Servicing fees, ancillary income and late fees (1) $ 19 $ 14 Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other (11 ) $ (5 ) Changes in estimates of fair value due to interest rate risk (23 ) 10 Gain (loss) on MSR derivatives (2) 22 (11 ) Net transaction costs on sale of MSR assets (1 ) (4 ) Total return included in net return on mortgage servicing rights $ 6 $ 4 (1) Servicing fees are recorded on an accrual basis. Ancillary income and late fees are recorded on a cash basis. (2) Changes in the derivatives utilized as economic hedges to offset changes in fair value of the MSRs. The following table summarizes income and fees associated with our mortgage loans subserviced for others: Three Months Ended March 31, 2019 2018 (Dollars in millions) Loan administration income on mortgage loans subserviced Servicing fees, ancillary income and late fees (1) $ 24 $ 10 Charges on subserviced escrow balances (12 ) (5 ) Other servicing charges (1 ) — Total income on mortgage loans subserviced, included in loan administration $ 11 $ 5 (1) Servicing fees are recorded on an accrual basis. Ancillary income and late fees are recorded on cash basis.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amount, Estimated Fair Value and Maturity and Net Gain (Loss) Recognized on Designated Instruments	The following table presents the net gain (loss) recognized on designated instruments, net of the impact of offsetting positions: Amount Recorded in Net Interest Income (1) Three Months Ended March 31, 2019 2018 (Dollars in millions) Gain (loss) on cash flow hedging relationships in interest contracts: Amount of gain (loss) reclassified from AOCI into income $ — $ (1 ) Total gain (loss) on hedges $ — $ (1 ) (1) The gain (loss) on fair value hedging relationships in interest contracts was de minimis and zero for the three months ending March 31, 2019 and March 31, 2018 , respectively. During the second quarter of 2018, we de-designated all of our remaining cash flow hedge relationships. The following table presents the notional amount, estimated fair value and maturity of our derivative financial instruments: March 31, 2019 (1) Notional Amount Fair Value (2) Expiration Dates (Dollars in millions) Derivatives in fair value hedge relationships: Assets Interest rate swap on CDs $ 10 $ — 2019 Derivatives not designated as hedging instruments: Assets Futures $ 234 $ — 2019-2023 Mortgage-backed securities forwards 2,001 4 2019 Rate lock commitments 4,102 37 2019 Interest rate swaps and swaptions 894 16 2019-2029 Total derivative assets $ 7,231 $ 57 Liabilities Futures $ 1,295 $ 1 2019-2023 Mortgage-backed securities forwards 4,942 41 2019 Rate lock commitments 143 — 2019 Interest rate swaps 1,350 4 2019-2049 Total derivative liabilities $ 7,730 $ 46 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes. (2) Derivative assets and liabilities are included in other assets and other liabilities on the Consolidated Statements of Financial Condition, respectively. December 31, 2018 (1) Notional Amount Fair Value (2) Expiration Dates (Dollars in millions) Derivatives in fair value hedge relationships: Assets Interest rate swaps on CDs $ 20 $ — 2019 Liabilities Interest rate swaps on CDs $ 10 $ — 2019 Derivatives not designated as hedging instruments: Assets Futures $ 248 $ — 2019-2023 Mortgage backed securities forwards 362 4 2019 Rate lock commitments 2,221 20 2019 Interest rate swaps and swaptions 1,662 23 2019-2049 Total derivative assets $ 4,493 $ 47 Liabilities Futures $ 1,513 $ 1 2019-2023 Mortgage backed securities forwards 4,625 31 2019 Rate lock commitments 45 — 2019 Interest rate swaps 755 7 2019-2028 Total derivative liabilities $ 6,938 $ 39 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes. (2) Derivative assets and liabilities are included in other assets and other liabilities on the Consolidated Statements of Financial Condition, respectively.
Derivatives Subject to a Master Netting Arrangement	The following tables present the derivatives subject to a master netting arrangement, including the cash pledged as collateral: Gross Amounts Netted in the Statement of Financial Position Net Amount Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Gross Amount Financial Instruments Cash Collateral (Dollars in millions) March 31, 2019 Derivatives not designated as hedging instruments: Assets Mortgage backed securities forwards $ 4 $ — $ 4 $ — $ — Interest rate swaps and swaptions (1) 16 — 16 — 3 Total derivative assets $ 20 $ — $ 20 $ — $ 3 Liabilities Futures $ 1 $ — $ 1 $ — $ 1 Mortgage backed securities forwards 41 — 41 — 42 Interest rate swaps (1) 4 — 4 — 28 Total derivative liabilities $ 46 $ — $ 46 $ — $ 71 December 31, 2018 Derivatives not designated as hedging instruments: Assets Mortgage-backed securities forwards $ 4 $ — $ 4 $ — $ — Interest rate swaps and swaptions (1) 23 — 23 — 14 Total derivative assets $ 27 $ — $ 27 $ — $ 14 Liabilities Futures $ 1 $ — $ 1 $ — $ 1 Mortgage-backed securities forwards 31 — 31 — 29 Interest rate swaps (1) 7 — 7 — 23 Total derivative liabilities $ 39 $ — $ 39 $ — $ 53 (1) Variation margin pledged to or received from a Central Counterparty Clearing House to cover the prior day's fair value of open positions, is considered settlement of the derivative position for accounting purposes.
Net Gain (Loss) Recognized in Income on Derivative Instruments	The following table presents net gain (loss) recognized in income on derivative instruments, net of the impact of offsetting positions: Three Months Ended March 31, 2019 2018 (Dollars in millions) Derivatives not designated as hedging instruments: Location of Gain (Loss) Futures Net return on mortgage servicing rights $ — $ (2 ) Interest rate swaps and swaptions Net return on mortgage servicing rights 13 (5 ) Mortgage-backed securities forwards Net return on mortgage servicing rights 9 (4 ) Rate lock commitments and forward agency and loan sales Net gain on loan sales 8 (8 ) Forward commitments Other noninterest income 1 — Interest rate swaps (1) Other noninterest income 1 — Total derivative gain (loss) $ 32 $ (19 ) (1) Includes customer-initiated commercial interest rate swaps.

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Breakdown of FHLB Advances Outstanding	The following is a breakdown of our FHLB advances outstanding: March 31, 2019 December 31, 2018 Amount Rate Amount Rate (Dollars in millions) Short-term fixed rate term advances $ 2,830 2.55 % $ 2,993 2.52 % Other short-term borrowings 271 2.45 % 251 2.87 % Total short-term Federal Home Loan Bank advances and other borrowings 3,101 3,244 Long-term Federal Home Loan Bank fixed rate advances (1) 250 1.68 % 150 1.53 % Total Federal Home Loan Bank advances $ 3,351 $ 3,394 (1) Includes the current portion of fixed rate advances of $50 million at both March 31, 2019 and December 31, 2018 .
Detailed Information on FHLB Advances and Other Borrowings	The following table contains detailed information on our FHLB advances and other borrowings: Three Months Ended March 31, 2019 2018 (Dollars in millions) Maximum outstanding at any month end $ 3,391 $ 5,740 Average outstanding balance 2,878 5,322 Average remaining borrowing capacity 3,314 1,399 Weighted average interest rate 2.45 % 1.65 %
Maturity Dates of FHLB Advances and Other Borrowings	The following table outlines the maturity dates of our FHLB advances and other borrowings: March 31, 2019 (Dollars in millions) 2019 $ 3,151 2020 — 2021 — 2022 — Thereafter 200 Total $ 3,351
Long-Term Debt, Net of Debt Issuance Costs	The following table presents long-term debt, net of debt issuance costs: March 31, 2019 December 31, 2018 Amount Interest Rate Amount Interest Rate (Dollars in millions) Senior Notes Senior notes, matures 2021 $ 248 6.125 % $ 248 6.125 % Trust Preferred Securities Floating Three Month LIBOR Plus: 3.25%, matures 2032 $ 26 5.86 % $ 26 6.07 % 3.25%, matures 2033 26 6.04 % 26 5.69 % 3.25%, matures 2033 26 5.85 % 26 6.05 % 2.00%, matures 2035 26 4.79 % 26 4.44 % 2.00%, matures 2035 26 4.79 % 26 4.44 % 1.75%, matures 2035 51 4.36 % 51 4.54 % 1.50%, matures 2035 25 4.29 % 25 3.94 % 1.45%, matures 2037 25 4.06 % 25 4.24 % 2.50%, matures 2037 16 5.11 % 16 5.29 % Total Trust Preferred Securities 247 247 Total other long-term debt $ 495 $ 495

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The following table sets forth the components in accumulated other comprehensive income (loss): Three Months Ended March 31, 2019 2018 (Dollars in millions) Investment securities Beginning balance $ (47 ) $ (18 ) Unrealized gain (loss) 21 (32 ) Less: Tax provision (benefit) 5 (8 ) Net unrealized gain (loss) 16 (24 ) Reclassification of certain income tax effects (1) — (5 ) Other comprehensive income (loss), net of tax 16 (29 ) Ending balance $ (31 ) $ (47 ) Cash Flow Hedges Beginning balance $ — $ 2 Unrealized gain — 19 Less: Tax provision — 5 Net unrealized gain — 14 Reclassifications out of AOCI (2) — 1 Net unrealized gain reclassified out of AOCI — 1 Other comprehensive income, net of tax — 15 Ending balance $ — $ 17 (1) Income tax effects of the Tax Cuts and Jobs Act are reclassified from AOCI to retained earnings due to early adoption of ASU 2018-02. (2) Reclassifications are reported in interest expense on the Consolidated Statement of Operations.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share of Common Stock	The following table sets forth the computation of basic and diluted earnings per share of common stock: Three Months Ended March 31, 2019 2018 (Dollars in millions, except share data) Net income $ 36 $ 35 Weighted Average Shares Weighted average common shares outstanding 56,897,799 57,356,654 Effect of dilutive securities Stock-based awards 692,473 957,731 Weighted average diluted common shares 57,590,272 58,314,385 Earnings per common share Basic earnings per common share $ 0.64 $ 0.61 Effect of dilutive securities Stock-based awards (0.01 ) (0.01 ) Diluted earnings per common share $ 0.63 $ 0.60

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Provision for Income Tax and Effective Tax Provision Rate	The following table presents our provision for income tax and effective tax provision rate: Three Months Ended March 31, 2019 2018 (Dollars in millions) Provision for income taxes $ 8 $ 9 Effective tax provision rate 18.4 % 20.1 %

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Restricted Stock Activity	The following table summarizes restricted stock and restricted stock units activity: Three Months Ended March 31, 2019 Shares Weighted — Average Grant-Date Fair Value per Share Restricted Stock and Restricted Stock Units Non-vested balance at beginning of period 1,620,568 $ 27.27 Granted 60,879 30.68 Vested (31,364 ) 34.45 Canceled and forfeited (17,701 ) 32.17 Non-vested balance at end of period 1,632,382 $ 27.20

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital Ratios	The following tables present the regulatory capital ratios as of the dates indicated: Flagstar Bancorp Actual For Capital Adequacy Purposes Well-Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio (Dollars in millions) March 31, 2019 Tangible capital (to adjusted avg. total assets) $ 1,520 8.37 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,520 8.37 % $ 727 4.0 % $ 909 5.0 % Common equity Tier 1 capital (to RWA) 1,280 9.69 % 594 4.5 % 859 6.5 % Tier 1 capital (to RWA) 1,520 11.51 % 793 6.0 % 1,057 8.0 % Total capital (to RWA) 1,650 12.49 % 1,057 8.0 % 1,321 10.0 % December 31, 2018 Tangible capital (to adjusted avg. total assets) $ 1,505 8.29 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,505 8.29 % $ 726 4.0 % $ 908 5.0 % Common equity Tier 1 capital (to RWA) 1,265 10.54 % 540 4.5 % 780 6.5 % Tier 1 capital (to RWA) 1,505 12.54 % 720 6.0 % 960 8.0 % Total capital (to RWA) 1,637 13.63 % 960 8.0 % 1,201 10.0 % N/A - Not applicable Flagstar Bank Actual For Capital Adequacy Purposes Well-Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio (Dollars in millions) March 31, 2019 Tangible capital (to adjusted avg. total assets) $ 1,641 9.04 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,641 9.04 % $ 726 4.0 % $ 908 5.0 % Common equity tier 1 capital (to RWA) 1,641 12.44 % 594 4.5 % 858 6.5 % Tier 1 capital (to RWA) 1,641 12.44 % 792 6.0 % 1,055 8.0 % Total capital (to RWA) 1,771 13.42 % 1,055 8.0 % 1,319 10.0 % December 31, 2018 Tangible capital (to adjusted avg. total assets) $ 1,574 8.67 % N/A N/A N/A N/A Tier 1 leverage (to adjusted avg. total assets) 1,574 8.67 % $ 726 4.0 % $ 908 5.0 % Common equity tier 1 capital (to RWA) 1,574 13.12 % 540 4.5 % 780 6.5 % Tier 1 capital (to RWA) 1,574 13.12 % 720 6.0 % 960 8.0 % Total capital (to RWA) 1,705 14.21 % 960 8.0 % 1,200 10.0 % N/A - Not applicable

Legal Proceedings, Contingenc_2

Legal Proceedings, Contingencies and Commitments (Tables)	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Summary of Contractual Amount of Significant Commitments	The following table is a summary of the contractual amount of significant commitments: March 31, 2019 December 31, 2018 (Dollars in millions) Commitments to extend credit Mortgage loans interest-rate lock commitments $ 4,286 $ 2,293 Warehouse loan commitments 2,222 2,334 Commercial and industrial commitments 1,007 918 Other commercial commitments 1,529 1,260 HELOC commitments 454 429 Other consumer commitments 189 108 Standby and commercial letters of credit 64 63

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Financial Instruments Carried at Fair Value	The following tables present the financial instruments carried at fair value by caption on the Consolidated Statement of Financial Condition and by level in the valuation hierarchy. March 31, 2019 Level 1 Level 2 Level 3 Total Fair Value (Dollars in millions) Investment securities available-for-sale Agency - Commercial $ — $ 1,376 $ — $ 1,376 Agency - Residential — 649 — 649 Municipal obligations — 32 — 32 Corporate debt obligations — 53 — 53 Other MBS — 31 — 31 Certificate of Deposit — 1 — 1 Loans held-for-sale Residential first mortgage loans — 3,846 — 3,846 Loans held-for-investment Residential first mortgage loans — 8 — 8 Home equity — — 2 2 Mortgage servicing rights — — 278 278 Derivative assets Rate lock commitments (fallout-adjusted) — — 37 37 Mortgage-backed securities forwards — 4 — 4 Interest rate swaps and swaptions — 16 — 16 Total assets at fair value $ — $ 6,016 $ 317 $ 6,333 Derivative liabilities Futures $ — $ (1 ) $ — $ (1 ) Mortgage backed securities forwards — (41 ) — (41 ) Interest rate swaps — (4 ) — (4 ) DOJ litigation settlement — — (60 ) (60 ) Contingent consideration — — (6 ) (6 ) Total liabilities at fair value $ — $ (46 ) $ (66 ) $ (112 ) December 31, 2018 Level 1 Level 2 Level 3 Total Fair Value (Dollars in millions) Investment securities available-for-sale Agency - Commercial $ — $ 1,374 $ — $ 1,374 Agency - Residential — 662 — 662 Municipal obligations — 32 — 32 Corporate debt obligations — 41 — 41 Other MBS — 32 — 32 Loans held-for-sale Residential first mortgage loans — 3,732 — 3,732 Loans held-for-investment Residential first mortgage loans — 8 — 8 Home equity — — 2 2 Mortgage servicing rights — — 290 290 Derivative assets Rate lock commitments (fallout-adjusted) — — 20 20 Mortgage-backed securities forwards — 4 — 4 Interest rate swaps and swaptions — 23 — 23 Total assets at fair value $ — $ 5,908 $ 312 $ 6,220 Derivative liabilities Futures $ — $ (1 ) $ — $ (1 ) Mortgage-backed securities forwards — (31 ) — (31 ) Interest rate swaps — (7 ) — (7 ) DOJ litigation settlement — — (60 ) (60 ) Contingent consideration — — (6 ) (6 ) Total liabilities at fair value $ — $ (39 ) $ (66 ) $ (105 )
Roll Forward of Financial Instruments Classified as Level 3	The following tables include a roll forward of the Consolidated Statements of Financial Condition amounts (including the change in fair value) for financial instruments classified by us within Level 3 of the valuation hierarchy: Balance at Beginning of Period Total Gains (Losses) Recorded in Earnings (1) Purchases / Originations Sales Settlement Transfers In (Out) Balance at End of Period (Dollars in millions) Three Months Ended March 31, 2019 Assets Loans held-for-investment Home equity $ 2 $ — $ — $ — $ — $ — $ 2 Mortgage servicing rights (2) 290 (34 ) 67 (45 ) — — 278 Rate lock commitments (net) (2)(3) 20 25 50 — — (58 ) 37 Totals $ 312 $ (9 ) $ 117 $ (45 ) $ — $ (58 ) $ 317 Liabilities DOJ litigation settlement $ (60 ) $ — $ — $ — $ — $ — $ (60 ) Contingent consideration (6 ) — — — — — (6 ) Totals $ (66 ) $ — $ — $ — $ — $ — $ (66 ) Three Months Ended March 31, 2018 Assets Loans held-for-investment Home equity $ 4 $ 1 $ — $ — $ (1 ) $ — $ 4 Mortgage servicing rights (2) 291 5 84 (141 ) — — 239 Rate lock commitments (net) (2)(3) 24 (34 ) 62 — — (22 ) 30 Totals $ 319 $ (28 ) $ 146 $ (141 ) $ (1 ) $ (22 ) $ 273 Liabilities DOJ litigation settlement $ (60 ) $ — $ — $ — $ — $ — $ (60 ) Contingent consideration (25 ) 2 — — 2 — (21 ) Totals $ (85 ) $ 2 $ — $ — $ 2 $ — $ (81 ) (1) There were no unrealized gains (losses) recorded in OCI during the three months ended March 31, 2019 and 2018 . (2) We utilized swaptions, futures, forward agency and loan sales and interest rate swaps to manage the risk associated with mortgage servicing rights and rate lock commitments. Gains and losses for individual lines do not reflect the effect of our risk management activities related to such Level 3 instruments. (3) Rate lock commitments are reported on a fallout-adjusted basis. Transfers out of Level 3 represent the settlement value of the commitments that are transferred to LHFS, which are classified as Level 2 assets.
Quantitative Information about Recurring Level 3 Fair Value Instruments	The following tables present the quantitative information about recurring Level 3 fair value financial instruments and the fair value measurements as of: Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) March 31, 2019 Assets Loans held-for-investment Home equity $ 2 Discounted cash flows Discount rate 7.2% -10.8% (9.0%) (1) Mortgage servicing rights $ 278 Discounted cash flows Option adjusted spread 2.3% - 25.9% (5.5%) (1) Rate lock commitments (net) $ 37 Consensus pricing Origination pull-through rate 78.9% - 87.2% (80.4%) (1) Liabilities DOJ litigation settlement $ (60 ) Discounted cash flows See description below See description below Contingent consideration $ (6 ) Discounted cash flows Beta 0.6 - 1.6 (1.1) (2) Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) December 31, 2018 Assets Loans held-for-investment Home equity $ 2 Discounted cash flows Discount rate 7.2% - 10.8% (9.0%) (1) Mortgage servicing rights $ 290 Discounted cash flows Option adjusted spread 2.1% - 25.9% (5.4%) (1) Rate lock commitments (net) $ 20 Consensus pricing Origination pull-through rate 75.0% - 87.2% (76.8%) (1) Liabilities DOJ litigation settlement $ (60 ) Discounted cash flows See description below See description below Contingent consideration $ (6 ) Discounted cash flows Beta 0.6 - 1.6 (1.1) (2) (1) Unobservable inputs were weighted by their relative fair value of the instruments. (2) Unobservable inputs were not weighted as only one instrument exists.
Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents assets measured at fair value on a nonrecurring basis: Total (1) Level 2 Level 3 Gains (Losses) (Dollars in millions) March 31, 2019 Loans held-for-sale (2) $ 7 $ 7 $ — $ (1 ) Impaired loans held-for-investment (2) Residential first mortgage loans 13 — 13 (5 ) Repossessed assets (3) 8 8 (3 ) Totals $ 28 $ 7 $ 21 $ (9 ) December 31, 2018 Loans held-for-sale (2) $ 5 $ 5 $ — $ (1 ) Impaired loans held-for-investment (2) Residential first mortgage loans 12 — 12 (4 ) Repossessed assets (3) 7 — 7 (3 ) Totals $ 24 $ 5 $ 19 $ (8 ) (1) The fair values are determined at various dates during the three months ended March 31, 2019 and the year ended December 31, 2018 , respectively. (2) Gains (losses) reflect fair value adjustments on assets for which we did not elect the fair value option. (3) Gains (losses) reflect write downs of repossessed assets based on the estimated fair value of the specific assets.
Quantitative Information about Nonrecurring Level 3 Fair Value Financial Instruments	The following table presents the quantitative information about nonrecurring Level 3 fair value financial instruments and the fair value measurements: Fair Value Valuation Technique Unobservable Input Range (Weighted Average) (Dollars in millions) March 31, 2019 Impaired loans held-for-investment Loans held-for-investment $ 13 Fair value of collateral Loss severity discount 25% - 30% (26.7%) (1) Repossessed assets $ 8 Fair value of collateral Loss severity discount 0% - 100% (23.3%) (1) December 31, 2018 Impaired loans held-for-investment Loans held-for-investment $ 12 Fair value of collateral Loss severity discount 25% - 30% (28.3%) (1) Repossessed assets $ 7 Fair value of collateral Loss severity discount 0% - 100% (25.8%) (1) (1) Unobservable inputs were weighted by their relative fair value of the instruments.
Carrying Amount and Estimated Fair Value of Financial Instruments	The following table presents the carrying amount and estimated fair value of financial instruments that are carried either at fair value, cost, or amortized cost: March 31, 2019 Estimated Fair Value Carrying Value Total Level 1 Level 2 Level 3 (Dollars in millions) Assets Cash and cash equivalents $ 390 $ 390 $ 390 $ — $ — Investment securities available-for-sale 2,142 2,142 — 2,142 — Investment securities held-to-maturity 683 666 — 666 — Loans held-for-sale 3,874 3,874 — 3,874 — Loans held-for-investment 9,936 10,093 — 8 10,085 Loans with government guarantees 470 451 — 451 — Mortgage servicing rights 278 278 — — 278 Federal Home Loan Bank stock 303 303 — 303 — Bank owned life insurance 342 342 — 342 — Repossessed assets 8 8 — — 8 Other assets, foreclosure claims 53 53 — 53 — Derivative financial instruments, assets 57 57 — 20 37 Liabilities Retail deposits Demand deposits and savings accounts $ (6,431 ) $ (5,529 ) $ — $ (5,529 ) $ — Certificates of deposit (2,584 ) (2,590 ) — (2,590 ) — Wholesale deposits (467 ) (468 ) — (468 ) — Government deposits (1,187 ) (1,116 ) — (1,116 ) — Custodial deposits (2,784 ) (2,738 ) — (2,738 ) — Federal Home Loan Bank advances (3,351 ) (3,343 ) — (3,343 ) — Long-term debt (495 ) (459 ) — (459 ) — DOJ litigation settlement (60 ) (60 ) — — (60 ) Contingent consideration (6 ) (6 ) — — (6 ) Derivative financial instruments, liabilities (46 ) (46 ) — (46 ) — December 31, 2018 Estimated Fair Value Carrying Value Total Level 1 Level 2 Level 3 (Dollars in millions) Assets Cash and cash equivalents $ 408 $ 408 $ 408 $ — $ — Investment securities available-for-sale 2,142 2,142 — 2,142 — Investment securities held-to-maturity 703 681 — 681 — Loans held-for-sale 3,869 3,870 — 3,870 — Loans held-for-investment 9,088 8,966 — 8 8,958 Loans with government guarantees 392 374 — 374 — Mortgage servicing rights 290 290 — — 290 Federal Home Loan Bank stock 303 303 — 303 — Bank owned life insurance 340 340 — 340 — Repossessed assets 7 7 — — 7 Other assets, foreclosure claims 50 50 — 50 — Derivative financial instruments, assets 57 47 — 27 20 Liabilities Retail deposits Demand deposits and savings accounts $ (6,431 ) $ (5,475 ) $ — $ (5,475 ) $ — Certificates of deposit (2,584 ) (2,379 ) — (2,379 ) — Wholesale deposits (583 ) (585 ) — (585 ) — Government deposits (1,187 ) (1,145 ) — (1,145 ) — Custodial deposits (2,784 ) (1,664 ) — (1,664 ) — Federal Home Loan Bank advances (3,351 ) (3,383 ) — (3,383 ) — Long-term debt (495 ) (463 ) — (463 ) — DOJ litigation settlement (60 ) (60 ) — — (60 ) Contingent consideration (6 ) (6 ) — — (6 ) Derivative financial instruments, liabilities (46 ) (39 ) — (39 ) —
Changes in Fair Value Included in Earnings	The following table reflects the change in fair value included in earnings of financial instruments for which the fair value option has been elected: Three Months Ended March 31, 2019 2018 (Dollars in millions) Assets Loans held-for-sale Net gain (loss) on loan sales $ 79 $ (88 )
Differences Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding	The following table reflects the difference between the aggregate fair value and aggregate remaining contractual principal balance outstanding for assets and liabilities for which the fair value option has been elected: March 31, 2019 December 31, 2018 Unpaid Principal Balance Fair Value Fair Value Over / (Under) Unpaid Principal Balance Unpaid Principal Balance Fair Value Fair Value Over / (Under) Unpaid Principal Balance (Dollars in millions) Assets Nonaccrual loans Loans held-for-sale $ 8 $ 8 $ — $ 6 $ 6 $ — Loans held-for-investment 4 3 (1 ) 4 3 (1 ) Total nonaccrual loans $ 12 $ 11 $ (1 ) $ 10 $ 9 $ (1 ) Other performing loans Loans held-for-sale $ 3,698 $ 3,838 $ 140 $ 3,601 $ 3,726 $ 125 Loans held-for-investment 8 7 (1 ) 8 7 (1 ) Total other performing loans $ 3,706 $ 3,845 $ 139 $ 3,609 $ 3,733 $ 124 Total loans Loans held-for-sale $ 3,706 $ 3,846 $ 140 $ 3,607 $ 3,732 $ 125 Loans held-for-investment 12 10 (2 ) 12 10 (2 ) Total loans $ 3,718 $ 3,856 $ 138 $ 3,619 $ 3,742 $ 123 Liabilities Litigation settlement (1) $ (118 ) $ (60 ) $ 58 $ (118 ) $ (60 ) $ 58 (1) We are obligated to pay $118 million in installment payments upon meeting certain performance conditions, as described in Note 16 - Legal Proceedings, Contingencies and Commitments.

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Financial Information by Business Segment	The following tables present financial information by business segment for the periods indicated: Three Months Ended March 31, 2019 Community Banking Mortgage Originations Mortgage Servicing Other (1) Total (Dollars in millions) Summary of Operations Net interest income $ 103 $ 23 $ 3 $ (3 ) $ 126 Net gain (loss) on loan sales (6 ) 55 — — 49 Other noninterest income (loss) 12 16 35 (3 ) 60 Total net interest income and noninterest income (loss) 109 94 38 (6 ) 235 (Provision) benefit for loan losses (1 ) — — 1 — Compensation and benefits (24 ) (24 ) (6 ) (33 ) (87 ) Other noninterest expense and directly allocated overhead (41 ) (36 ) (25 ) (2 ) (104 ) Total noninterest expense (65 ) (60 ) (31 ) (35 ) (191 ) Income (loss) before indirect overhead allocations and income taxes 43 34 7 (40 ) 44 Overhead allocations (10 ) (10 ) (5 ) 25 — (Provision) benefit for income taxes (7 ) (5 ) — 4 (8 ) Net income (loss) $ 26 $ 19 $ 2 $ (11 ) $ 36 Intersegment (expense) revenue $ (4 ) $ 7 $ 6 $ (9 ) $ — Average balances Loans held-for-sale $ 71 $ 3,195 $ — $ — $ 3,266 Loans with government guarantees — 455 — — 455 Loans held-for-investment (2) 9,156 12 — 29 9,197 Total assets 9,577 4,624 56 4,181 18,438 Deposits 9,983 — 2,528 395 12,906 (1) Includes offsetting adjustments made to reclassify income and expenses relating to operating leases and custodial deposits for subservicing clients. (2) Includes adjustment made to reclassify operating lease assets to loans held-for-investment. Three Months Ended March 31, 2018 Community Banking Mortgage Originations Mortgage Servicing Other (1) Total (Dollars in millions) Summary of Operations Net interest income $ 69 $ 31 $ 2 $ 4 $ 106 Net gain (loss) on loan sales (2 ) 62 — — 60 Other noninterest income 8 19 19 5 51 Total net interest income and noninterest income 75 112 21 9 217 (Provision) benefit for loan losses (1 ) — — 1 — Compensation and benefits (17 ) (29 ) (4 ) (30 ) (80 ) Other noninterest expense and directly allocated overhead (26 ) (41 ) (16 ) (10 ) (93 ) Total noninterest expense (43 ) (70 ) (20 ) (40 ) (173 ) Income (loss) before indirect overhead allocations and income taxes 31 42 1 (30 ) 44 Overhead allocations (11 ) (18 ) (5 ) 34 — (Provision) benefit for income taxes (4 ) (5 ) — — (9 ) Net income (loss) $ 16 $ 19 $ (4 ) $ 4 $ 35 Intersegment (expense) revenue $ (1 ) $ — $ 5 $ (4 ) $ — Average balances Loans held-for-sale $ 12 $ 4,219 $ — $ — $ 4,231 Loans with government guarantees — 291 — — 291 Loans held-for-investment (2) 7,489 6 — 29 7,524 Total assets 7,638 5,527 35 3,890 17,090 Deposits 7,739 — 1,541 91 9,371 (1) Includes offsetting adjustments made to reclassify income and expenses relating to operating leases and custodial deposits for subservicing clients. (2) Includes adjustment made to reclassify operating lease assets to loans held-for-investment.

Recently Issued Accounting Pr_3

Recently Issued Accounting Pronouncements (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Information Relating to Operating Leases	The following table reflects information relating to our operating leases: As of/For the Three Months Ended March 31, 2019 (Dollars in millions) Operating Leases Right-of-use asset (1) $ 20 Lease liability (1) $ 20 Lease expense (2) $ 3 Weighted-average remaining lease term (years) 4.2 Weighted-average discount rate 2.95 % (1) Right-of-use asset and lease liability are recorded in premises and equipment and other liabilities, respectively, on the Consolidated Statements of Financial Condition. (2) Includes de-minimis amount of short-term lease expense and variable lease expense.
Undiscounted Cash Flows on Operating Leases	The following table presents our undiscounted cash flows on our operating lease liabilities as of March 31, 2019 and our minimum contractual obligations on our operating leases as of December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in millions) Within one year $ 8 $ 9 After one year and within two years 5 6 After two years and within three years 4 4 After three years and within four years 2 2 After four years and within five years 1 1 After five years 2 3 Total (1) $ 22 $ 25 (1) The difference between the total undiscounted cash payments on operating leases and the lease liability is solely the effect of discounting.
Accounting Standards Adopted and Accounting Standards Issued and Note Expected to Have a Material Impact	The following ASUs have been issued and are not expected to have a material impact on our Consolidated Financial Statements and/or significant accounting policies: Standard Description Effective Date ASU 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses January 1, 2020 ASU 2018-18 Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606 January 1, 2020 ASU 2018-17 Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities January 1, 2020 ASU 2018-15 Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) January 1, 2020 ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment January 1, 2020 We adopted the following accounting standard updates (ASU) during 2019 , none of which had a material impact to our financial statements: Standard Description Effective Date ASU 2019-01 Leases (Topic 842): Codification Improvements January 1, 2019 ASU 2018-20 Leases (Topic 842): Narrow-Scope Improvements for Lessors January 1, 2019 ASU 2018-16 Derivatives and hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes January 1, 2019 ASU 2018-11 Leases (Topic 842): Targeted Improvements January 1, 2019 ASU 2018-10 Codification Improvements to Topic 842, Leases January 1, 2019 ASU 2018-07 Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 1, 2019 ASU 2017-11 Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Non-controlling Interests with a Scope. January 1, 2019 ASU 2017-08 Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities January 1, 2019 ASU 2017-06 Plan Accounting - Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plans (Topic 962), Health and Welfare Benefit Plans (Topic 965): Employee Benefit Plan Master Trust Reporting January 1, 2019

Subsequent Events (Tables)

Subsequent Events (Tables)	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Credit Exposure to Commercial Borrower	The following table presents our credit exposure to this borrower. March 31, 2019 May 10, 2019 (Dollars in millions) Amount outstanding Collateralized C&I loan $ 69 $ 69 Outstanding warehouse line, collateralized by agency mortgage loans 6 13 Total $ 75 $ 82

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ in Millions	Nov. 30, 2018USD ($)branch	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Mar. 19, 2018USD ($)	Mar. 12, 2018USD ($)
Business Acquisition [Line Items]
Goodwill and intangible assets		$ 182	$ 190
Wells Fargo Branches Acquisition
Business Acquisition [Line Items]
Number of bank branches acquired | branch	52
Goodwill	$ 58
Acquisition-related costs expensed in period		$ 1	$ 15
Pro forma reclassification of acquisition-related expenses				$ 16
Pro forma reclassification of hedging gains				$ 29
Loans	107
Deposits	$ 1,761
Wells Fargo Branches Acquisition | Core Deposits Intangible
Business Acquisition [Line Items]
Estimated useful life	10 years
Santander Bank And Desert Community Bank Acquisitions
Business Acquisition [Line Items]
Goodwill and intangible assets					$ 51
Santander Bank Mortgage Loan Warehouse Business
Business Acquisition [Line Items]
Loans						$ 499
Commitments						$ 1,700
Desert Community Bank Branch Acquisition
Business Acquisition [Line Items]
Loans					59
Deposits					$ 614

Acquisitions - Preliminary Purc

Acquisitions - Preliminary Purchase Price Allocation to the Fair Value of Assets Acquired and Liabilities Assumed (Details) - Wells Fargo Branches Acquisition $ in Millions	Nov. 30, 2018USD ($)
Assets acquired
Cash	$ 9
Loans	107
Core deposit intangible (CDI)	60
Other assets	26
Total assets	202
Liabilities assumed:
Deposits	1,761
Total liabilities	1,761
Fair value of net assets acquired	(1,559)
Cash consideration received	(1,501)
Goodwill	$ 58

Acquisitions - Pro Forma Inform

Acquisitions - Pro Forma Information (Details) - Wells Fargo Branches Acquisition - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net interest income	$ 540	$ 482
Net income	$ 196	$ 82

Investment Securities - Summary

Investment Securities - Summary of Investment Securities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale securities
Amortized Cost	$ 2,185	$ 2,206
Gross Unrealized Gains	6	4
Gross Unrealized Losses	(49)	(68)
Fair Value	2,142	2,142
Held-to-maturity securities
Amortized Cost	683	703
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(17)	(22)
Fair Value	666	681
Agency - Commercial
Available-for-sale securities
Amortized Cost	1,404	1,413
Gross Unrealized Gains	6	4
Gross Unrealized Losses	(34)	(43)
Fair Value	1,376	1,374
Held-to-maturity securities
Amortized Cost	339	349
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(13)	(13)
Fair Value	326	336
Agency - Residential
Available-for-sale securities
Amortized Cost	664	686
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(15)	(24)
Fair Value	649	662
Held-to-maturity securities
Amortized Cost	344	354
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(4)	(9)
Fair Value	340	345
Corporate debt obligations
Available-for-sale securities
Amortized Cost	53	41
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	53	41
Municipal obligations
Available-for-sale securities
Amortized Cost	32	33
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(1)
Fair Value	32	32
Other MBS
Available-for-sale securities
Amortized Cost	31	32
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	31	32
Certificate of deposits
Available-for-sale securities
Amortized Cost	1	1
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 1	$ 1

Investment Securities (Details)

Investment Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Schedule of Trading and Available-for-sale Securities [Line Items]
Other than temporary impairment	$ 0	$ 0
Agency Securities
Schedule of Trading and Available-for-sale Securities [Line Items]
Percentage of total securities	96.00%

Investment Securities - Availab

Investment Securities - Available-for-Sale Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Purchase of AFS securities	$ 16,000,000	$ 4,000,000
AFS securities sold	1,000,000
Gain on AFS securities	0
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Investment securities pledged	$ 1,900,000,000		$ 1,900,000,000

Investment Securities - Held-to

Investment Securities - Held-to-Maturity Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Purchase of HTM securities	$ 0	$ 0

Investment Securities - Summa_2

Investment Securities - Summary of Unrealized Loss Positions on Investment Securities (Details) $ in Millions	Mar. 31, 2019USD ($)security	Dec. 31, 2018USD ($)security
Other MBS
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	$ 0
Unrealized Loss Position with Duration Under 12 Months	$ 16
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	0
Unrealized Loss Position with Duration Under 12 Months | security	2
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ 0
Unrealized Loss Position with Duration Under 12 Months	0
Corporate debt obligations
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	0	$ 0
Unrealized Loss Position with Duration Under 12 Months	$ 11	$ 7
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	0	0
Unrealized Loss Position with Duration Under 12 Months | security	3	2
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ 0	$ 0
Unrealized Loss Position with Duration Under 12 Months	0	0
Municipal obligations
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	27	28
Unrealized Loss Position with Duration Under 12 Months	$ 0	$ 1
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	14	16
Unrealized Loss Position with Duration Under 12 Months | security	0	2
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ 0	$ (1)
Unrealized Loss Position with Duration Under 12 Months	0	0
Agency - Residential
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	624	647
Unrealized Loss Position with Duration Under 12 Months	$ 0	$ 14
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	78	79
Unrealized Loss Position with Duration Under 12 Months | security	0	5
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ (15)	$ (24)
Unrealized Loss Position with Duration Under 12 Months	0	0
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	306	345
Unrealized Loss Position with Duration Under 12 Months	$ 0	$ 0
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	55	60
Unrealized Loss Position with Duration Under 12 Months | security	0	0
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ (4)	$ (9)
Unrealized Loss Position with Duration Under 12 Months	0	0
Agency - Commercial
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	1,011	1,025
Unrealized Loss Position with Duration Under 12 Months	$ 21	$ 1
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	73	74
Unrealized Loss Position with Duration Under 12 Months | security	3	1
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ (34)	$ (43)
Unrealized Loss Position with Duration Under 12 Months	0	0
Fair Value
Unrealized Loss Position with Duration 12 Months and Over	326	336
Unrealized Loss Position with Duration Under 12 Months	$ 0	$ 0
Number of Securities
Unrealized Loss Position with Duration 12 Months and Over | security	26	26
Unrealized Loss Position with Duration Under 12 Months | security	0	0
Unrealized Loss
Unrealized Loss Position with Duration 12 Months and Over	$ (13)	$ (13)
Unrealized Loss Position with Duration Under 12 Months	$ 0	$ 0

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Investment Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 1
Due after one year through five years	60
Due after five years through 10 years	74
Due after 10 years	2,050
Amortized Cost	2,185	$ 2,206
Investment Securities Available-for-Sale, Estimated Fair Value
Due in one year or less	1
Due after one year through five years	60
Due after five years through 10 years	74
Due after 10 years	2,007
Fair Value	$ 2,142	2,142
Investment Securities Available-for-Sale, Weighted-Average Yield
Due in one year or less	1.50%
Due after one year through five years	2.51%
Due after five years through 10 years	4.44%
Due after 10 years	2.68%
Investment Securities Held-to-maturity, Amortized cost
Due in one year or less	$ 0
Due after one year through five years	10
Due after five years through 10 years	10
Due after 10 years	663
Amortized Cost	683	703
Investment Securities Held-to-maturity, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	10
Due after five years through 10 years	10
Due after 10 years	646
Fair Value	$ 666	$ 681
Investment Securities Held-to-maturity, Weighted-Average Yield
Due in one year or less	0.00%
Due after one year through five years	2.45%
Due after five years through 10 years	2.24%
Due after 10 years	2.46%

Loans Held-for-Sale (Details)

Loans Held-for-Sale (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Receivables Held-for-sale [Abstract]
Loans held-for-sale	$ 3,874		$ 3,869
Net gain (loss) on loan sales	47
Net gain (loss) on loan sales	49	$ 60
Loans held-for-sale recorded at lower of cost or fair value	$ 28		$ 137

Loans Held-for-Investment - Sum

Loans Held-for-Investment - Summary of Loans Held-for-Investment (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	$ 9,936	$ 9,088
Residential first mortgage loans
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	3,100	2,999
Home equity
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	796	731
Other
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	433	314
Consumer loans
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	4,329	4,044
Commercial real estate
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	2,324	2,152
Commercial and industrial
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	1,651	1,433
Warehouse lending
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	1,632	1,459
Commercial Loans
Loans and Leases Receivable, Net Amount [Abstract]
Loans held-for-investment	$ 5,607	$ 5,044

Loans Held-for-Investment - S_2

Loans Held-for-Investment - Summary of the UPB of Loan Sales and Purchases in the Loans Held-for-Investment Portfolio (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable
Loans purchased	$ 100	$ 0
Premium associated with loans purchased	3	0
Residential first mortgage
Accounts, Notes, Loans and Financing Receivable
Loans sold	102	0
Net gain associated with loan sales	2	0
Residential first mortgage | Performing
Accounts, Notes, Loans and Financing Receivable
Loans sold	102	0
Home equity
Accounts, Notes, Loans and Financing Receivable
Loans purchased	49	0
Other consumer
Accounts, Notes, Loans and Financing Receivable
Loans purchased	$ 51	$ 0

Loans Held-for-Investment - Nar

Loans Held-for-Investment - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Receivables [Abstract]
Loans pledged as collateral	$ 6,500,000,000		$ 6,800,000,000
Accrued interest on nonaccrual loans	1,000,000	$ 1,000,000
Loans 90 days past due and still accruing interest	$ 0		$ 0

Loans Held-for-Investment - Cha

Loans Held-for-Investment - Changes in ALLL by Class of Loan (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	$ 128	$ 140
Charge-offs	(2)	(2)
Recoveries	1	1
Provision (benefit)	0	0
Ending balance ALLL	127	139
Residential first mortgage
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	38	47
Charge-offs	(1)	(1)
Recoveries	0	0
Provision (benefit)	(2)	1
Ending balance ALLL	35	47
Home equity
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	15	22
Charge-offs	0	(1)
Recoveries	1	1
Provision (benefit)	0	(1)
Ending balance ALLL	16	21
Other Consumer
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	3	1
Charge-offs	(1)	0
Recoveries	0	0
Provision (benefit)	2	0
Ending balance ALLL	4	1
Commercial real estate
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	48	45
Charge-offs	0	0
Recoveries	0	0
Provision (benefit)	(12)	(1)
Ending balance ALLL	36	44
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	18	19
Charge-offs	0	0
Recoveries	0	0
Provision (benefit)	12	1
Ending balance ALLL	30	20
Warehouse lending
Allowance for Loan Losses [Roll Forward]
Beginning balance ALLL	6	6
Charge-offs	0	0
Recoveries	0	0
Provision (benefit)	0	0
Ending balance ALLL	$ 6	$ 6

Loans Held-for-Investment - Met

Loans Held-for-Investment - Method of Evaluation by Class of Loan (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Loans held-for-investment
Individually evaluated	$ 57	$ 55
Collectively evaluated	9,869	9,023
Total loans	9,926	9,078
Allowance for loan losses
Individually evaluated	11	11
Collectively evaluated	116	117
Total allowance for loan losses	127	128	$ 139	$ 140
Residential first mortgage
Loans held-for-investment
Individually evaluated	33	32
Collectively evaluated	3,059	2,959
Total loans	3,092	2,991
Allowance for loan losses
Individually evaluated	4	4
Collectively evaluated	31	34
Total allowance for loan losses	35	38	47	47
Home equity
Loans held-for-investment
Individually evaluated	23	23
Collectively evaluated	771	706
Total loans	794	729
Allowance for loan losses
Individually evaluated	7	7
Collectively evaluated	9	8
Total allowance for loan losses	16	15	21	22
Other Consumer
Loans held-for-investment
Individually evaluated	1	0
Collectively evaluated	432	314
Total loans	433	314
Allowance for loan losses
Individually evaluated	0	0
Collectively evaluated	4	3
Total allowance for loan losses	4	3	1	1
Commercial real estate
Loans held-for-investment
Individually evaluated	0	0
Collectively evaluated	2,324	2,152
Total loans	2,324	2,152
Allowance for loan losses
Individually evaluated	0	0
Collectively evaluated	36	48
Total allowance for loan losses	36	48	44	45
Commercial and industrial
Loans held-for-investment
Individually evaluated	0	0
Collectively evaluated	1,651	1,433
Total loans	1,651	1,433
Allowance for loan losses
Individually evaluated	0	0
Collectively evaluated	30	18
Total allowance for loan losses	30	18	20	19
Warehouse lending
Loans held-for-investment
Individually evaluated	0	0
Collectively evaluated	1,632	1,459
Total loans	1,632	1,459
Allowance for loan losses
Individually evaluated	0	0
Collectively evaluated	6	6
Total allowance for loan losses	$ 6	$ 6	$ 6	$ 6

Loans Held-for-Investment - Agi

Loans Held-for-Investment - Aging Analysis of Past Due and Current Loans (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Loans, Aging [Abstract]
Total Past Due	$ 33	$ 29
Current	9,903	9,059
Total LHFI	9,936	9,088
Loans greater than 90 days past due accounted for under the fair value option	3	3
Residential first mortgage
Loans, Aging [Abstract]
Total Past Due	24	25
Current	3,076	2,974
Total LHFI	3,100	2,999
Home equity
Loans, Aging [Abstract]
Total Past Due	4	4
Current	792	727
Total LHFI	796	731
Other
Loans, Aging [Abstract]
Total Past Due	4	0
Current	429	314
Total LHFI	433	314
Consumer loans
Loans, Aging [Abstract]
Total Past Due	32	29
Current	4,297	4,015
Total LHFI	4,329	4,044
Commercial real estate
Loans, Aging [Abstract]
Total Past Due	0	0
Current	2,324	2,152
Total LHFI	2,324	2,152
Commercial and industrial
Loans, Aging [Abstract]
Total Past Due	1	0
Current	1,650	1,433
Total LHFI	1,651	1,433
Warehouse lending
Loans, Aging [Abstract]
Total Past Due	0	0
Current	1,632	1,459
Total LHFI	1,632	1,459
Commercial loans
Loans, Aging [Abstract]
Total Past Due	1	0
Current	5,606	5,044
Total LHFI	5,607	5,044
30-59 Days Past Due
Loans, Aging [Abstract]
Total Past Due	6	5
30-59 Days Past Due | Residential first mortgage
Loans, Aging [Abstract]
Total Past Due	3	4
30-59 Days Past Due | Home equity
Loans, Aging [Abstract]
Total Past Due	1	1
30-59 Days Past Due | Other
Loans, Aging [Abstract]
Total Past Due	2	0
30-59 Days Past Due | Consumer loans
Loans, Aging [Abstract]
Total Past Due	6	5
30-59 Days Past Due | Commercial real estate
Loans, Aging [Abstract]
Total Past Due	0	0
30-59 Days Past Due | Commercial and industrial
Loans, Aging [Abstract]
Total Past Due	0	0
30-59 Days Past Due | Warehouse lending
Loans, Aging [Abstract]
Total Past Due	0	0
30-59 Days Past Due | Commercial loans
Loans, Aging [Abstract]
Total Past Due	0	0
60-89 Days Past Due
Loans, Aging [Abstract]
Total Past Due	3	2
60-89 Days Past Due | Residential first mortgage
Loans, Aging [Abstract]
Total Past Due	1	2
60-89 Days Past Due | Home equity
Loans, Aging [Abstract]
Total Past Due	0	0
60-89 Days Past Due | Other
Loans, Aging [Abstract]
Total Past Due	1	0
60-89 Days Past Due | Consumer loans
Loans, Aging [Abstract]
Total Past Due	2	2
60-89 Days Past Due | Commercial real estate
Loans, Aging [Abstract]
Total Past Due	0	0
60-89 Days Past Due | Commercial and industrial
Loans, Aging [Abstract]
Total Past Due	1	0
60-89 Days Past Due | Warehouse lending
Loans, Aging [Abstract]
Total Past Due	0	0
60-89 Days Past Due | Commercial loans
Loans, Aging [Abstract]
Total Past Due	1	0
90 Days or Greater Past Due
Loans, Aging [Abstract]
Total Past Due	24	22
90 Days or Greater Past Due | Residential first mortgage
Loans, Aging [Abstract]
Total Past Due	20	19
90 Days or Greater Past Due | Home equity
Loans, Aging [Abstract]
Total Past Due	3	3
90 Days or Greater Past Due | Other
Loans, Aging [Abstract]
Total Past Due	1	0
90 Days or Greater Past Due | Consumer loans
Loans, Aging [Abstract]
Total Past Due	24	22
90 Days or Greater Past Due | Commercial real estate
Loans, Aging [Abstract]
Total Past Due	0	0
90 Days or Greater Past Due | Commercial and industrial
Loans, Aging [Abstract]
Total Past Due	0	0
90 Days or Greater Past Due | Warehouse lending
Loans, Aging [Abstract]
Total Past Due	0	0
90 Days or Greater Past Due | Commercial loans
Loans, Aging [Abstract]
Total Past Due	$ 0	$ 0

Loans Held-for-Investment - S_3

Loans Held-for-Investment - Summary of TDRs by Type and Performing Status (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Troubled Debt Restructurings
TDRs	$ 53	$ 54
Allowance for loan losses on TDR loans	10	10
TDR loans under fair value option	3	3
Consumer loans | Residential first mortgage
Troubled Debt Restructurings
TDRs	30	30
Consumer loans | Home equity
Troubled Debt Restructurings
TDRs	23	24
Performing
Troubled Debt Restructurings
TDRs	43	44
Performing | Consumer loans | Residential first mortgage
Troubled Debt Restructurings
TDRs	22	22
Performing | Consumer loans | Home equity
Troubled Debt Restructurings
TDRs	21	22
Nonperforming
Troubled Debt Restructurings
TDRs	10	10
Nonperforming | Consumer loans | Residential first mortgage
Troubled Debt Restructurings
TDRs	8	8
Nonperforming | Consumer loans | Home equity
Troubled Debt Restructurings
TDRs	$ 2	$ 2

Loans Held-for-Investment - S_4

Loans Held-for-Investment - Summary of Newly Modified TDR's (Details)	3 Months Ended
	Mar. 31, 2019USD ($)loan	Mar. 31, 2018USD ($)loan
Troubled Debt Restructurings
Number of Accounts | loan	4	12
Pre-Modification Unpaid Principal Balance	$ 0	$ 7,000,000
Post-Modification Unpaid Principal Balance	0	7,000,000
Increase in Allowance at Modification	0	$ 1,000,000
Modifications subsequent to default	$ 0
Residential first mortgage
Troubled Debt Restructurings
Number of Accounts | loan	2	6
Pre-Modification Unpaid Principal Balance	$ 0	$ 1,000,000
Post-Modification Unpaid Principal Balance	0	1,000,000
Increase in Allowance at Modification	$ 0	$ 0
Number of loans modified in previous 12 months that have defaulted | loan	0	2
Modifications subsequent to default		$ 1,000,000
Home equity
Troubled Debt Restructurings
Number of Accounts | loan	2	5
Pre-Modification Unpaid Principal Balance	$ 0	$ 1,000,000
Post-Modification Unpaid Principal Balance	0	1,000,000
Increase in Allowance at Modification	$ 0	$ 0
Commercial and industrial
Troubled Debt Restructurings
Number of Accounts | loan		1
Pre-Modification Unpaid Principal Balance		$ 5,000,000
Post-Modification Unpaid Principal Balance		5,000,000
Increase in Allowance at Modification		$ 1,000,000

Loans Held-for-Investment - Imp

Loans Held-for-Investment - Impaired Loans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Impaired Loans
With no related allowance recorded, recorded investment	$ 17		$ 14
With no related allowance recorded, unpaid principal balance	24		20
With an allowance recorded, recorded investment	40		41
With an allowance recorded, unpaid principal balance	41		43
With an allowance recorded, related allowance	11		11
Total recorded investment	57		55
Total unpaid principal balance	65		63
Average Recorded Investment	57	$ 63
Interest Income Recognized	0	1
Residential first mortgage
Impaired Loans
With no related allowance recorded, recorded investment	16		13
With no related allowance recorded, unpaid principal balance	20		16
With an allowance recorded, recorded investment	18		19
With an allowance recorded, unpaid principal balance	18		20
With an allowance recorded, related allowance	4		4
Total recorded investment	34		32
Total unpaid principal balance	38		36
Average Recorded Investment	34	33
Interest Income Recognized	0	0
Home equity
Impaired Loans
With no related allowance recorded, recorded investment	0		1
With no related allowance recorded, unpaid principal balance	3		4
With an allowance recorded, recorded investment	22		22
With an allowance recorded, unpaid principal balance	23		23
With an allowance recorded, related allowance	7		7
Total recorded investment	22		23
Total unpaid principal balance	26		27
Average Recorded Investment	22	27
Interest Income Recognized	0	1
Other consumer
Impaired Loans
With no related allowance recorded, recorded investment	1		0
With no related allowance recorded, unpaid principal balance	1		0
With an allowance recorded, related allowance	0		0
Total recorded investment	1		0
Total unpaid principal balance	1		$ 0
Average Recorded Investment	1	0
Interest Income Recognized	0	0
Commercial and industrial
Impaired Loans
Average Recorded Investment	0	3
Interest Income Recognized	$ 0	$ 0

Loans Held-for-Investment - Loa

Loans Held-for-Investment - Loan Credit Quality Indicators (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Loans held-for-investment
Loans held-for-investment	$ 9,926	$ 9,078
Loans held-for-investment	9,936	9,088
Consumer Loans
Loans held-for-investment
Loans held-for-investment	4,329	4,044
Consumer Loans | Pass
Loans held-for-investment
Loans held-for-investment	4,255	3,971
Consumer Loans | Watch
Loans held-for-investment
Loans held-for-investment	48	51
Consumer Loans | Special Mention
Loans held-for-investment
Loans held-for-investment	0	0
Consumer Loans | Substandard
Loans held-for-investment
Loans held-for-investment	26	22
Residential first mortgage
Loans held-for-investment
Loans held-for-investment	3,092	2,991
Loans held-for-investment	3,100	2,999
Residential first mortgage | Pass
Loans held-for-investment
Loans held-for-investment	3,053	2,952
Residential first mortgage | Watch
Loans held-for-investment
Loans held-for-investment	25	28
Residential first mortgage | Special Mention
Loans held-for-investment
Loans held-for-investment	0	0
Residential first mortgage | Substandard
Loans held-for-investment
Loans held-for-investment	22	19
Home equity
Loans held-for-investment
Loans held-for-investment	794	729
Loans held-for-investment	796	731
Home equity | Pass
Loans held-for-investment
Loans held-for-investment	771	705
Home equity | Watch
Loans held-for-investment
Loans held-for-investment	22	23
Home equity | Special Mention
Loans held-for-investment
Loans held-for-investment	0	0
Home equity | Substandard
Loans held-for-investment
Loans held-for-investment	3	3
Other Consumer
Loans held-for-investment
Loans held-for-investment	433	314
Loans held-for-investment	433	314
Other Consumer | Pass
Loans held-for-investment
Loans held-for-investment	431	314
Other Consumer | Watch
Loans held-for-investment
Loans held-for-investment	1	0
Other Consumer | Special Mention
Loans held-for-investment
Loans held-for-investment	0	0
Other Consumer | Substandard
Loans held-for-investment
Loans held-for-investment	1	0
Commercial Loans
Loans held-for-investment
Loans held-for-investment	5,607	5,044
Commercial Loans | Pass
Loans held-for-investment
Loans held-for-investment	5,250	4,807
Commercial Loans | Watch
Loans held-for-investment
Loans held-for-investment	271	187
Commercial Loans | Special Mention
Loans held-for-investment
Loans held-for-investment	52	49
Commercial Loans | Substandard
Loans held-for-investment
Loans held-for-investment	34	1
Commercial real estate
Loans held-for-investment
Loans held-for-investment	2,324	2,152
Loans held-for-investment	2,324	2,152
Commercial real estate | Pass
Loans held-for-investment
Loans held-for-investment	2,297	2,132
Commercial real estate | Watch
Loans held-for-investment
Loans held-for-investment	20	14
Commercial real estate | Special Mention
Loans held-for-investment
Loans held-for-investment	5	5
Commercial real estate | Substandard
Loans held-for-investment
Loans held-for-investment	2	1
Commercial and industrial
Loans held-for-investment
Loans held-for-investment	1,651	1,433
Loans held-for-investment	1,651	1,433
Commercial and industrial | Pass
Loans held-for-investment
Loans held-for-investment	1,568	1,351
Commercial and industrial | Watch
Loans held-for-investment
Loans held-for-investment	19	53
Commercial and industrial | Special Mention
Loans held-for-investment
Loans held-for-investment	32	29
Commercial and industrial | Substandard
Loans held-for-investment
Loans held-for-investment	32	0
Warehouse lending
Loans held-for-investment
Loans held-for-investment	1,632	1,459
Loans held-for-investment	1,632	1,459
Warehouse lending | Pass
Loans held-for-investment
Loans held-for-investment	1,385	1,324
Warehouse lending | Watch
Loans held-for-investment
Loans held-for-investment	232	120
Warehouse lending | Special Mention
Loans held-for-investment
Loans held-for-investment	15	15
Warehouse lending | Substandard
Loans held-for-investment
Loans held-for-investment	$ 0	$ 0

Loans with Government Guarant_2

Loans with Government Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
Debt instrument, term	10 years
Loans with government guarantees	$ 470	$ 392
Repossessed assets and associated claims	$ 53	$ 50

Variable Interest Entities (Det

Variable Interest Entities (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)loanentity	Dec. 31, 2018USD ($)loanentity
Private-label Securitizations
Number of VIEs | entity	0	0
Agency - Commercial
Private-label Securitizations
Ownership interest investment	5.00%
FSTAR 2007-1 Mortgage Securitization
Private-label Securitizations
Number of mortgage securitization trust loans | loan	1,427	1,513
Aggregate principal balance | $	$ 46	$ 49

Mortgage Servicing Rights - Cha

Mortgage Servicing Rights - Changes in the Fair Value of Residential First Mortgage MSRs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Servicing Asset at Fair Value [Roll Forward]
Balance at beginning of period	$ 290
Changes in fair value due to
Fair value of MSRs at end of period	278
Residential first mortgage loans
Servicing Asset at Fair Value [Roll Forward]
Balance at beginning of period	290	$ 291
Additions from loans sold with servicing retained	67	84
Reductions from sales	(45)	(141)
Changes in fair value due to
Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other	(11)	(5)
Changes in estimates of fair value due to interest rate risk	(23)	10
Fair value of MSRs at end of period	$ 278	$ 239

Mortgage Servicing Rights - Sum

Mortgage Servicing Rights - Summary of Adverse Changes to Weighted-Average Assumptions on the Fair Value of Servicing Rights (Details) - Mortgage servicing rights $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)$ / loan	Dec. 31, 2018USD ($)$ / loan
Actual
Option adjusted spread	5.51%	5.42%
Constant prepayment rate	10.17%	9.57%
Weighted average cost to service per loan (in dollars per share) | $ / loan	86.11	85.57
Fair value impact due to 10% adverse change
Option adjusted spread	$ 270	$ 284
Constant prepayment rate	260	278
Weighted average cost to service per loan (in dollars per share)	272	286
Fair value impact due to 20% adverse change
Option adjusted spread	266	280
Constant prepayment rate	247	268
Weighted average cost to service per loan (in dollars per share)	$ 269	$ 283

Mortgage Servicing Rights - S_2

Mortgage Servicing Rights - Summary of Income and Fees (Details) - Residential first mortgage - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Servicing Assets at Fair Value [Line Items]
Total return included in net return on mortgage servicing rights	$ 6	$ 4
Net return on mortgage servicing rights
Servicing Assets at Fair Value [Line Items]
Servicing fees, ancillary income and late fees	19	14
Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes, and other	(11)	(5)
Changes in estimates of fair value due to interest rate risk	(23)	10
Gain (loss) on MSR derivatives	22	(11)
Net transaction costs on sale of MSR assets	(1)	(4)
Loan administration income on mortgage loans subserviced
Servicing Assets at Fair Value [Line Items]
Servicing fees, ancillary income and late fees	24	10
Charges on subserviced escrow balances	(12)	(5)
Other servicing charges	(1)	0
Total income on mortgage loans subserviced, included in loan administration	$ 11	$ 5

Derivative Financial Instrume_3

Derivative Financial Instruments - Notional Amount, Estimated Fair Value and Maturity of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Other liabilities
Liabilities
Notional amount	$ 7,730	$ 6,938
Fair value	46	39
Derivatives designated as hedging instruments | Interest rate swap on CDs | Other assets
Assets
Notional amount		20
Fair value		0
Derivatives designated as hedging instruments | Interest rate swap on CDs | Other liabilities
Assets
Notional amount	10
Fair value	0
Liabilities
Notional amount		10
Fair value		0
Derivatives not designated as hedging instruments
Assets
Fair value	20	27
Liabilities
Fair value	46	39
Derivatives not designated as hedging instruments | Other assets
Assets
Notional amount	7,231	4,493
Fair value	57	47
Derivatives not designated as hedging instruments | Futures
Liabilities
Fair value	1	1
Derivatives not designated as hedging instruments | Futures | Other assets
Assets
Notional amount	234	248
Fair value	0	0
Derivatives not designated as hedging instruments | Futures | Other liabilities
Liabilities
Notional amount	1,295	1,513
Fair value	1	1
Derivatives not designated as hedging instruments | Mortgage-backed securities forwards
Assets
Fair value	4	4
Liabilities
Fair value	41	31
Derivatives not designated as hedging instruments | Mortgage-backed securities forwards | Other assets
Assets
Notional amount	2,001	362
Fair value	4	4
Derivatives not designated as hedging instruments | Mortgage-backed securities forwards | Other liabilities
Liabilities
Notional amount	4,942	4,625
Fair value	41	31
Derivatives not designated as hedging instruments | Rate lock commitments | Other assets
Assets
Notional amount	4,102	2,221
Fair value	37	20
Derivatives not designated as hedging instruments | Rate lock commitments | Other liabilities
Liabilities
Notional amount	143	45
Fair value	0	0
Derivatives not designated as hedging instruments | Interest rate swaps and swaptions
Assets
Fair value	16	23
Derivatives not designated as hedging instruments | Interest rate swaps and swaptions | Other assets
Assets
Notional amount	894	1,662
Fair value	16	23
Derivatives not designated as hedging instruments | Interest rate swaps
Liabilities
Fair value	4	7
Derivatives not designated as hedging instruments | Interest rate swaps | Other liabilities
Liabilities
Notional amount	1,350	755
Fair value	$ 4	$ 7

Derivative Financial Instrume_4

Derivative Financial Instruments - Derivatives Subject to a Master Netting Arrangement (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	$ 3	$ 14
Liabilities
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	71	53
Derivatives not designated as hedging instruments
Assets
Gross Amount	20	27
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	20	27
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	3	14
Liabilities
Gross Amount	46	39
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	46	39
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	71	53
Derivatives not designated as hedging instruments | Mortgage-backed securities forwards
Assets
Gross Amount	4	4
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	4	4
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	0	0
Liabilities
Gross Amount	41	31
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	41	31
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	42	29
Derivatives not designated as hedging instruments | Interest rate swaps and swaptions
Assets
Gross Amount	16	23
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	16	23
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	3	14
Derivatives not designated as hedging instruments | Futures
Liabilities
Gross Amount	1	1
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	1	1
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	1	1
Derivatives not designated as hedging instruments | Interest rate swaps
Liabilities
Gross Amount	4	7
Gross Amounts Netted in the Statement of Financial Position	0	0
Net Amount Presented in the Statement of Financial Position	4	7
Gross Amounts Not Offset in the Statement of Financial Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statement of Financial Condition, Cash Collateral	$ 28	$ 23

Derivative Financial Instrume_5

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Right to reclaim cash	$ 71	$ 53
Obligation to return cash	3	14
Carrying Value | Interest rate swap on CDs
Derivative [Line Items]
Derivative instrument	10	30
Derivatives not designated as hedging instruments
Derivative [Line Items]
Right to reclaim cash	71	53
Obligation to receive cash irrespective of position	44	30
Obligation to return cash	3	14
Derivatives designated as hedging instruments
Derivative [Line Items]
Right to reclaim cash	$ 27	$ 23

Derivative Financial Instrume_6

Derivative Financial Instruments - Net Gain (Loss) Recognized on Designated Instruments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss)
Amount of gain (loss) reclassified from AOCI into income	$ 126,000,000	$ 106,000,000
Fair Value Hedges
Derivative Instruments, Gain (Loss)
Total gain (loss) on hedges		0
Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss)
Total gain (loss) on hedges	0	(1,000,000)
Derivatives designated as hedging instruments | Accumulated other comprehensive income, cash flow hedge | Reclassification out of accumulated other comprehensive income
Derivative Instruments, Gain (Loss)
Amount of gain (loss) reclassified from AOCI into income	$ 0	$ (1,000,000)

Derivative Financial Instrume_7

Derivative Financial Instruments - Net Gain (Loss) Recognized in Income on Derivative Instruments (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative [Line Items]
Derivative gain (loss)	$ 32	$ (19)
Futures | Net return (loss) on mortgage servicing rights
Derivative [Line Items]
Derivative gain (loss)	0	(2)
Interest rate swaps | Net return (loss) on mortgage servicing rights
Derivative [Line Items]
Derivative gain (loss)	13	(5)
Interest rate swaps | Other noninterest income
Derivative [Line Items]
Derivative gain (loss)	1	0
Mortgage-backed securities forwards | Net return (loss) on mortgage servicing rights
Derivative [Line Items]
Derivative gain (loss)	9	(4)
Rate lock commitments and forward agency and loan sales | Net (loss) gain on loan sales
Derivative [Line Items]
Derivative gain (loss)	8	(8)
Forward commitments | Other noninterest income
Derivative [Line Items]
Derivative gain (loss)	$ 1	$ 0

Borrowings - Breakdown of FHLB

Borrowings - Breakdown of FHLB Advances Outstanding (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount	$ 3,101	$ 3,244
Current portion of fixed rate advances	250	150
Total	3,351	3,394
Long-term Federal Home Loan Bank fixed rate advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Current portion of fixed rate advances	50	50
Short-term fixed rate term advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount	$ 2,830	$ 2,993
Rate	2.55%	2.52%
Other short-term borrowings
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount	$ 271	$ 251
Rate	2.45%	2.87%
Long-term Federal Home Loan Bank fixed rate advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Rate	1.68%	1.53%
Current portion of fixed rate advances	$ 250	$ 150

Borrowings - Detailed Informati

Borrowings - Detailed Information on FHLB Advances and Other Borrowings (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Debt Disclosure [Abstract]
Maximum outstanding at any month end	$ 3,391	$ 5,740
Average outstanding balance	2,878	5,322
Average remaining borrowing capacity	$ 3,314	$ 1,399
Weighted average interest rate	2.45%	1.65%

Borrowings - Maturity Dates of

Borrowings - Maturity Dates of FHLB Advances and Other Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
2019	$ 3,151
2020	0
2021	0
2022	0
Thereafter	200
Total	$ 3,351	$ 3,394

Borrowings - Summary of Long-Te

Borrowings - Summary of Long-Term Debt, Net of Debt Issuance Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 247	$ 247
Long-term debt	495	495
Senior notes, matures 2021
Trust Preferred Securities [Abstract]
Senior notes	$ 248	$ 248
Interest rate	6.125%	6.125%
Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2032
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 26	$ 26
Interest rate	5.86%	6.07%
Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2033
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 26	$ 26
Interest rate	6.04%	5.69%
Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2033
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 26	$ 26
Interest rate	5.85%	6.05%
Trust Preferred Securities, Floating Three Month LIBOR Plus 2.00%, matures 2035
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 26	$ 26
Interest rate	4.79%	4.44%
Trust Preferred Securities, Floating Three Month LIBOR Plus 2.00%, matures 2035
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 26	$ 26
Interest rate	4.79%	4.44%
Trust Preferred Securities, Floating Three Month LIBOR Plus 1.75%, matures 2035
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 51	$ 51
Interest rate	4.36%	4.54%
Trust Preferred Securities, Floating Three Month LIBOR Plus 1.50%, matures 2035
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 25	$ 25
Interest rate	4.29%	3.94%
Trust Preferred Securities, Floating Three Month LIBOR Plus 1.45%, matures 2037
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 25	$ 25
Interest rate	4.06%	4.24%
Trust Preferred Securities, Floating Three Month LIBOR Plus 2.50%, matures 2037
Trust Preferred Securities [Abstract]
Trust preferred securities	$ 16	$ 16
Interest rate	5.11%	5.29%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2032
Trust Preferred Securities [Abstract]
Variable rate on interest rate	3.25%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2033
Trust Preferred Securities [Abstract]
Variable rate on interest rate	3.25%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 3.25%, matures 2033
Trust Preferred Securities [Abstract]
Variable rate on interest rate	3.25%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 2.00%, matures 2035
Trust Preferred Securities [Abstract]
Variable rate on interest rate	2.00%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 2.00%, matures 2035
Trust Preferred Securities [Abstract]
Variable rate on interest rate	2.00%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 1.75%, matures 2035
Trust Preferred Securities [Abstract]
Variable rate on interest rate	1.75%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 1.50%, matures 2035
Trust Preferred Securities [Abstract]
Variable rate on interest rate	1.50%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 1.45%, matures 2037
Trust Preferred Securities [Abstract]
Variable rate on interest rate	1.45%
Three Month LIBOR | Trust Preferred Securities, Floating Three Month LIBOR Plus 2.50%, matures 2037
Trust Preferred Securities [Abstract]
Variable rate on interest rate	2.50%

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Jul. 11, 2016	Mar. 31, 2019
Debt Instrument
Payment of interest on trust preferred securities		$ 0
Senior Note Maturing 2021 | 6.125% senior notes
Debt Instrument
Debt instrument face amount	$ 250,000,000
Debt instrument redemption rate	100.00%
Treasury Rate | Senior Note Maturing 2021 | 6.125% senior notes
Debt Instrument
Variable rate on interest rate	0.50%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated other comprehensive income (loss)
Beginning balance	$ 1,570	$ 1,399
Other comprehensive income (loss), net of tax	16	(14)
Ending balance	1,574	1,427
Investment securities
Accumulated other comprehensive income (loss)
Beginning balance	(47)	(18)
Unrealized gain (loss)	21	(32)
Less: Tax provision (benefit)	5	(8)
Net unrealized loss, net of tax	16	(24)
Reclassification of certain income tax effects	0	(5)
Other comprehensive income (loss), net of tax	16	(29)
Ending balance	(31)	(47)
Cash Flow Hedges
Accumulated other comprehensive income (loss)
Beginning balance	0	2
Unrealized gain (loss)	0	19
Less: Tax provision (benefit)	0	5
Net unrealized loss, net of tax	0	14
Reclassification out of AOCI	0	1
Net unrealized gain reclassified out of AOCI	0	1
Other comprehensive income (loss), net of tax	0	15
Ending balance	$ 0	$ 17

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 36	$ 35
Weighted Average Shares
Weighted average common shares outstanding (in shares)	56,897,799	57,356,654
Effect of dilutive securities
Stock-based awards (in shares)	692,473	957,731
Weighted average diluted common shares (in shares)	57,590,272	58,314,385
Earnings per common share
Basic earnings per common share (in dollars per share)	$ 0.64	$ 0.61
Effect of dilutive securities
Stock-based awards (in dollars per share)	(0.01)	(0.01)
Diluted earnings per common share (in dollars per share)	$ 0.63	$ 0.60

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 8	$ 9
Effective tax provision rate	18.40%	20.10%
Unrecognized tax benefits, recognition period	12 months

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Tangible Capital
Tangible capital (to tangible assets), actual amount	$ 1,520	$ 1,505
Tangible capital (to tangible assets), actual ratio	8.37%	8.29%
Tier One Leverage Capital
Tier 1 capital actual amount	$ 1,520	$ 1,505
Tier 1 capital (to adjusted tangible assets), actual ratio	8.37%	8.29%
Tier 1 capital, for capital adequacy purposes amount	$ 727	$ 726
Tier 1 capital (to adjusted tangible assets), for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 capital capitalized under prompt corrective action provision amount	$ 909	$ 908
Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio	5.00%	5.00%
Common Equity Tier 1 Capital
Common equity Tier 1 capital (to RWA), actual amount	$ 1,280	$ 1,265
Common equity Tier 1 capital (to RWA), actual ratio	9.69%	10.54%
Common equity Tier 1 capital (to RWA), for capital adequacy purposes, amount	$ 594	$ 540
Common equity Tier 1 capital (to RWA), for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 capital (to RWA), well capitalized under prompt corrective action provisions, amount	$ 859	$ 780
Common equity Tier 1 capital (to RWA), well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier One Risk Based Capital [Abstract]
Tier 1 capital, actual amount	$ 1,520	$ 1,505
Tier 1 capital (to risk-weighted assets), actual ratio	11.51%	12.54%
Tier 1 capital, for capital adequacy purposes amount	$ 793	$ 720
Tier 1 capital (to risk-weighted assets), for capital adequacy purposes ratio	6.00%	6.00%
Tier 1 capital, capitalized under prompt corrective action provision amount	$ 1,057	$ 960
Tier 1 capital (to risk-weighted assets), capitalized under prompt corrective action provision ratio	8.00%	8.00%
Capital [Abstract]
Total capital, actual amount	$ 1,650	$ 1,637
Total capital (to risk-weighted assets), actual ratio	12.49%	13.63%
Total capital, for capital adequacy purposes amount	$ 1,057	$ 960
Total capital (to risk-weighted assets), for capital adequacy purposes ratio	8.00%	8.00%
Total capital, capitalized under prompt corrective action provisions amount	$ 1,321	$ 1,201
Total capital (to risk-weighted assets), capitalized under prompt corrective action provisions ratio	10.00%	10.00%
Bank
Tangible Capital
Tangible capital (to tangible assets), actual amount	$ 1,641	$ 1,574
Tangible capital (to tangible assets), actual ratio	9.04%	8.67%
Tier One Leverage Capital
Tier 1 capital actual amount	$ 1,641	$ 1,574
Tier 1 capital (to adjusted tangible assets), actual ratio	9.04%	8.67%
Tier 1 capital, for capital adequacy purposes amount	$ 726	$ 726
Tier 1 capital (to adjusted tangible assets), for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 capital capitalized under prompt corrective action provision amount	$ 908	$ 908
Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio	5.00%	5.00%
Common Equity Tier 1 Capital
Common equity Tier 1 capital (to RWA), actual amount	$ 1,641	$ 1,574
Common equity Tier 1 capital (to RWA), actual ratio	12.44%	13.12%
Common equity Tier 1 capital (to RWA), for capital adequacy purposes, amount	$ 594	$ 540
Common equity Tier 1 capital (to RWA), for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 capital (to RWA), well capitalized under prompt corrective action provisions, amount	$ 858	$ 780
Common equity Tier 1 capital (to RWA), well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier One Risk Based Capital [Abstract]
Tier 1 capital, actual amount	$ 1,641	$ 1,574
Tier 1 capital (to risk-weighted assets), actual ratio	12.44%	13.12%
Tier 1 capital, for capital adequacy purposes amount	$ 792	$ 720
Tier 1 capital (to risk-weighted assets), for capital adequacy purposes ratio	6.00%	6.00%
Tier 1 capital, capitalized under prompt corrective action provision amount	$ 1,055	$ 960
Tier 1 capital (to risk-weighted assets), capitalized under prompt corrective action provision ratio	8.00%	8.00%
Capital [Abstract]
Total capital, actual amount	$ 1,771	$ 1,705
Total capital (to risk-weighted assets), actual ratio	13.42%	14.21%
Total capital, for capital adequacy purposes amount	$ 1,055	$ 960
Total capital (to risk-weighted assets), for capital adequacy purposes ratio	8.00%	8.00%
Total capital, capitalized under prompt corrective action provisions amount	$ 1,319	$ 1,200
Total capital (to risk-weighted assets), capitalized under prompt corrective action provisions ratio	10.00%	10.00%

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 3	$ 2
Employee Stock Purchase Plan | 2017 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation shares authorized (in shares)	800,000
Shares issued during period (in shares)	32,878

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Restricted Stock Activity (Details) - Restricted Stock and Restricted Stock Units	3 Months Ended
	Mar. 31, 2019$ / sharesshares
Shares
Non-vested balance at beginning of period (in shares) | shares	1,620,568
Granted (in shares) | shares	60,879
Vested (in shares) | shares	(31,364)
Canceled and forfeited (in shares) | shares	(17,701)
Non-vested balance at end of period (in shares) | shares	1,632,382
Weighted — Average Grant-Date Fair Value per Share
Non-vested balance at beginning of period (in dollars per share) | $ / shares	$ 27.27
Granted (in dollars per share) | $ / shares	30.68
Vested (in dollars per share) | $ / shares	34.45
Canceled and forfeited (in dollars per share) | $ / shares	32.17
Non-vested balance at end of period (in dollars per share) | $ / shares	$ 27.20

Legal Proceedings, Contingenc_3

Legal Proceedings, Contingencies and Commitments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Loss Contingencies
Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio	5.00%	5.00%
Business acquisition threshold	33.30%
Accrued reserve for contingent liabilities	$ 2	$ 2
Letter of credit, reserve amount	$ 3	$ 3
Bank
Loss Contingencies
Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio	5.00%	5.00%
DOJ Agreement | Bank
Loss Contingencies
Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio	11.00%
DOJ Agreement
Loss Contingencies
Litigation settlement, initial payment	$ 15
Litigation settlement payment amount	118
DOJ Agreement | Subsequent Payments
Loss Contingencies
Litigation expense (up to)	$ 25

Legal Proceedings, Contingenc_4

Legal Proceedings, Contingencies and Commitments - Summary of the Contractual Amount of Significant Commitments (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Mortgage loans interest-rate lock commitments
Loss Contingencies
Commitments to extend credit	$ 4,286	$ 2,293
Warehouse loan commitments
Loss Contingencies
Commitments to extend credit	2,222	2,334
Commercial and industrial commitments
Loss Contingencies
Commitments to extend credit	1,007	918
Other commercial commitments
Loss Contingencies
Commitments to extend credit	1,529	1,260
HELOC commitments
Loss Contingencies
Commitments to extend credit	454	429
Other consumer commitments
Loss Contingencies
Commitments to extend credit	189	108
Standby and commercial letters of credit
Loss Contingencies
Commitments to extend credit	$ 64	$ 63

Fair Value Measurements - Finan

Fair Value Measurements - Financial Instruments Carried at Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivative assets
Investment securities available-for-sale	$ 2,142	$ 2,142
Loans held-for-sale, fair value	3,846	3,732
Loans held-for-investment	10	10
Mortgage servicing rights	278	290
Total assets at fair value	3,856	3,742
Agency - Commercial
Derivative assets
Investment securities available-for-sale	1,376	1,374
Agency - Residential
Derivative assets
Investment securities available-for-sale	649	662
Municipal obligations
Derivative assets
Investment securities available-for-sale	32	32
Corporate debt obligations
Derivative assets
Investment securities available-for-sale	53	41
Certificates of deposit
Derivative assets
Investment securities available-for-sale	1	1
Total Fair Value
Derivative assets
Investment securities available-for-sale	2,142	2,142
Loans held-for-sale, fair value	3,874	3,870
Loans held-for-investment	10,093	8,966
Mortgage servicing rights	278	290
Derivative liabilities
Contingent consideration	(6)	(6)
Level 1 | Total Fair Value
Derivative assets
Investment securities available-for-sale	0	0
Loans held-for-sale, fair value	0	0
Loans held-for-investment	0	0
Mortgage servicing rights	0	0
Derivative liabilities
Contingent consideration	0	0
Level 2 | Total Fair Value
Derivative assets
Investment securities available-for-sale	2,142	2,142
Loans held-for-sale, fair value	3,874	3,870
Loans held-for-investment	8	8
Mortgage servicing rights	0	0
Derivative liabilities
Contingent consideration	0	0
Level 3 | Total Fair Value
Derivative assets
Investment securities available-for-sale	0	0
Loans held-for-sale, fair value	0	0
Loans held-for-investment	10,085	8,958
Mortgage servicing rights	278	290
Derivative liabilities
Contingent consideration	(6)	(6)
Recurring | Total Fair Value
Derivative assets
Mortgage servicing rights	278	290
Total assets at fair value	6,333	6,220
Derivative liabilities
DOJ litigation settlement	(60)	(60)
Total liabilities at fair value	(112)	(105)
Recurring | Total Fair Value | Rate lock commitments
Derivative assets
Derivative assets	37	20
Recurring | Total Fair Value | Futures
Derivative liabilities
Derivative liabilities	(1)
Recurring | Total Fair Value | Mortgage-backed securities forwards
Derivative assets
Derivative assets	4	4
Derivative liabilities
Derivative liabilities	(41)	(31)
Recurring | Total Fair Value | Interest rate swaps and swaptions
Derivative assets
Derivative assets	16	23
Recurring | Total Fair Value | Futures
Derivative liabilities
Derivative liabilities		(1)
Recurring | Total Fair Value | Interest rate swaps
Derivative liabilities
Derivative liabilities	(4)	(7)
Recurring | Total Fair Value | Contingent consideration
Derivative liabilities
Contingent consideration	(6)	(6)
Recurring | Total Fair Value | Residential first mortgage loans
Derivative assets
Loans held-for-sale, fair value	3,846	3,732
Loans held-for-investment	8	8
Recurring | Total Fair Value | Home equity
Derivative assets
Loans held-for-investment	2	2
Recurring | Total Fair Value | Agency - Commercial
Derivative assets
Investment securities available-for-sale	1,376	1,374
Recurring | Total Fair Value | Agency - Residential
Derivative assets
Investment securities available-for-sale	649	662
Recurring | Total Fair Value | Municipal obligations
Derivative assets
Investment securities available-for-sale	32	32
Recurring | Total Fair Value | Corporate debt obligations
Derivative assets
Investment securities available-for-sale	53	41
Recurring | Total Fair Value | Other MBS
Derivative assets
Investment securities available-for-sale	31	32
Recurring | Total Fair Value | Certificates of deposit
Derivative assets
Investment securities available-for-sale	1
Recurring | Level 1
Derivative assets
Mortgage servicing rights	0	0
Total assets at fair value	0	0
Derivative liabilities
DOJ litigation settlement	0	0
Total liabilities at fair value	0	0
Recurring | Level 1 | Rate lock commitments
Derivative assets
Derivative assets	0	0
Recurring | Level 1 | Futures
Derivative liabilities
Derivative liabilities	0
Recurring | Level 1 | Mortgage-backed securities forwards
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Recurring | Level 1 | Interest rate swaps and swaptions
Derivative assets
Derivative assets	0	0
Recurring | Level 1 | Futures
Derivative liabilities
Derivative liabilities		0
Recurring | Level 1 | Interest rate swaps
Derivative liabilities
Derivative liabilities	0	0
Recurring | Level 1 | Contingent consideration
Derivative liabilities
Contingent consideration	0	0
Recurring | Level 1 | Residential first mortgage loans
Derivative assets
Loans held-for-sale, fair value	0	0
Loans held-for-investment	0	0
Recurring | Level 1 | Home equity
Derivative assets
Loans held-for-investment	0	0
Recurring | Level 1 | Agency - Commercial
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 1 | Agency - Residential
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 1 | Municipal obligations
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 1 | Corporate debt obligations
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 1 | Other MBS
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 1 | Certificates of deposit
Derivative assets
Investment securities available-for-sale	0
Recurring | Level 2
Derivative assets
Mortgage servicing rights	0	0
Total assets at fair value	6,016	5,908
Derivative liabilities
DOJ litigation settlement	0	0
Total liabilities at fair value	(46)	(39)
Recurring | Level 2 | Rate lock commitments
Derivative assets
Derivative assets	0	0
Recurring | Level 2 | Futures
Derivative liabilities
Derivative liabilities	(1)
Recurring | Level 2 | Mortgage-backed securities forwards
Derivative assets
Derivative assets	4	4
Derivative liabilities
Derivative liabilities	(41)	(31)
Recurring | Level 2 | Interest rate swaps and swaptions
Derivative assets
Derivative assets	16	23
Recurring | Level 2 | Futures
Derivative liabilities
Derivative liabilities		(1)
Recurring | Level 2 | Interest rate swaps
Derivative liabilities
Derivative liabilities	(4)	(7)
Recurring | Level 2 | Contingent consideration
Derivative liabilities
Contingent consideration	0	0
Recurring | Level 2 | Residential first mortgage loans
Derivative assets
Loans held-for-sale, fair value	3,846	3,732
Loans held-for-investment	8	8
Recurring | Level 2 | Home equity
Derivative assets
Loans held-for-investment	0	0
Recurring | Level 2 | Agency - Commercial
Derivative assets
Investment securities available-for-sale	1,376	1,374
Recurring | Level 2 | Agency - Residential
Derivative assets
Investment securities available-for-sale	649	662
Recurring | Level 2 | Municipal obligations
Derivative assets
Investment securities available-for-sale	32	32
Recurring | Level 2 | Corporate debt obligations
Derivative assets
Investment securities available-for-sale	53	41
Recurring | Level 2 | Other MBS
Derivative assets
Investment securities available-for-sale	31	32
Recurring | Level 2 | Certificates of deposit
Derivative assets
Investment securities available-for-sale	1
Recurring | Level 3
Derivative assets
Mortgage servicing rights	278	290
Total assets at fair value	317	312
Derivative liabilities
DOJ litigation settlement	(60)	(60)
Total liabilities at fair value	(66)	(66)
Recurring | Level 3 | Rate lock commitments
Derivative assets
Derivative assets	37	20
Recurring | Level 3 | Futures
Derivative liabilities
Derivative liabilities	0
Recurring | Level 3 | Mortgage-backed securities forwards
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Recurring | Level 3 | Interest rate swaps and swaptions
Derivative assets
Derivative assets	0	0
Recurring | Level 3 | Futures
Derivative liabilities
Derivative liabilities		0
Recurring | Level 3 | Interest rate swaps
Derivative liabilities
Derivative liabilities	0	0
Recurring | Level 3 | Contingent consideration
Derivative liabilities
Contingent consideration	(6)	(6)
Recurring | Level 3 | Residential first mortgage loans
Derivative assets
Loans held-for-sale, fair value	0	0
Loans held-for-investment	0	0
Recurring | Level 3 | Home equity
Derivative assets
Loans held-for-investment	2	2
Recurring | Level 3 | Agency - Commercial
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 3 | Agency - Residential
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 3 | Municipal obligations
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 3 | Corporate debt obligations
Derivative assets
Investment securities available-for-sale	0	0
Recurring | Level 3 | Other MBS
Derivative assets
Investment securities available-for-sale	0	$ 0
Recurring | Level 3 | Certificates of deposit
Derivative assets
Investment securities available-for-sale	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Measurement Input, Expected Term | Level 3 | Residential Mortgage Servicing Rights Capitalized
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average life	4 years 6 months	5 years 2 months 12 days

Fair Value Measurements - Roll

Fair Value Measurements - Roll Forward of Financial Instruments Classified as Level 3 (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Liabilities, Unobservable Input Reconciliation
Unrealized gains (losses) recorded in OCI	$ 0	$ 0
Unrealized gains (losses) recorded in OCI	0	0
Recurring | Home equity
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period	2,000,000
Total Gains (Losses) Recorded in Earnings	0
Purchases / Originations	0
Sales	0
Settlement	0
Transfers In (Out)	0
Recurring | Mortgage servicing rights
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period	290,000,000
Total Gains (Losses) Recorded in Earnings	(34,000,000)
Purchases / Originations	67,000,000
Sales	(45,000,000)
Settlement	0
Transfers In (Out)	0
Recurring | Rate lock commitments
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period	20,000,000
Total Gains (Losses) Recorded in Earnings	25,000,000
Purchases / Originations	50,000,000
Sales	0
Settlement	0
Transfers In (Out)	(58,000,000)
Recurring | DOJ litigation settlement
Liabilities, Unobservable Input Reconciliation
Balance at Beginning of Period	(60,000,000)
Total unrealized gains/(losses) recorded in earnings	0
Purchases / Originations	0
Sales	0
Settlement	0
Transfers In (Out)	0
Recurring | Contingent consideration
Liabilities, Unobservable Input Reconciliation
Balance at Beginning of Period	(6,000,000)
Total unrealized gains/(losses) recorded in earnings	0
Purchases / Originations	0
Sales	0
Settlement	0
Transfers In (Out)	0
Recurring | Level 3
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period	312,000,000	319,000,000
Total Gains (Losses) Recorded in Earnings	(9,000,000)	(28,000,000)
Purchases / Originations	117,000,000	146,000,000
Sales	(45,000,000)	(141,000,000)
Settlement	0	(1,000,000)
Transfers In (Out)	(58,000,000)	(22,000,000)
Balance at End of Period	317,000,000	273,000,000
Liabilities, Unobservable Input Reconciliation
Balance at Beginning of Period	(66,000,000)	(85,000,000)
Total unrealized gains/(losses) recorded in earnings	0	2,000,000
Purchases / Originations	0	0
Sales	0	0
Settlement	0	2,000,000
Transfers In (Out)	0	0
Balance at End of Period	(66,000,000)	(81,000,000)
Recurring | Level 3 | Home equity
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period		4,000,000
Total Gains (Losses) Recorded in Earnings		1,000,000
Purchases / Originations		0
Sales		0
Settlement		(1,000,000)
Transfers In (Out)		0
Balance at End of Period	2,000,000	4,000,000
Recurring | Level 3 | Mortgage servicing rights
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period		291,000,000
Total Gains (Losses) Recorded in Earnings		5,000,000
Purchases / Originations		84,000,000
Sales		(141,000,000)
Settlement		0
Transfers In (Out)		0
Balance at End of Period	278,000,000	239,000,000
Recurring | Level 3 | Rate lock commitments
Assets, Unobservable Input Reconciliation
Balance at Beginning of Period		24,000,000
Total Gains (Losses) Recorded in Earnings		(34,000,000)
Purchases / Originations		62,000,000
Sales		0
Settlement		0
Transfers In (Out)		(22,000,000)
Balance at End of Period	37,000,000	30,000,000
Recurring | Level 3 | DOJ litigation settlement
Liabilities, Unobservable Input Reconciliation
Balance at Beginning of Period		(60,000,000)
Total unrealized gains/(losses) recorded in earnings		0
Purchases / Originations		0
Sales		0
Settlement		0
Transfers In (Out)		0
Balance at End of Period	(60,000,000)	(60,000,000)
Recurring | Level 3 | Contingent consideration
Liabilities, Unobservable Input Reconciliation
Balance at Beginning of Period		(25,000,000)
Total unrealized gains/(losses) recorded in earnings		2,000,000
Purchases / Originations		0
Sales		0
Settlement		2,000,000
Transfers In (Out)		0
Balance at End of Period	$ (6,000,000)	$ (21,000,000)

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information about Recurring Level 3 Fair Value Instruments (Details) - Recurring - Level 3 $ in Millions	Mar. 31, 2019USD ($)$ / loan	Dec. 31, 2018USD ($)$ / loan
Home equity
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held-for-investment	$ 2	$ 2
Home equity | Discount rate | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.072	0.072
Home equity | Discount rate | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.108	0.108
Home equity | Discount rate | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.090	0.090
Home equity | Constant prepayment rate | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.125	0.136
Home equity | Constant prepayment rate | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.188	0.203
Home equity | Constant prepayment rate | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.156	0.169
Home equity | Constant default rate | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.030	0.030
Home equity | Constant default rate | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.045	0.046
Home equity | Constant default rate | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans held for investment, fair value input	0.037	0.038
Mortgage servicing rights
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage servicing rights	$ 278	$ 290
Mortgage servicing rights | Constant prepayment rate | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0	0
Mortgage servicing rights | Constant prepayment rate | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0.114	0.107
Mortgage servicing rights | Constant prepayment rate | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0.102	0.096
Mortgage servicing rights | Weighted average cost to service per loan | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan | $ / loan	67	67
Mortgage servicing rights | Weighted average cost to service per loan | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan | $ / loan	95	95
Mortgage servicing rights | Weighted average cost to service per loan | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan | $ / loan	86	86
Mortgage servicing rights | Option adjusted spread | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0.023	0.021
Mortgage servicing rights | Option adjusted spread | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0.259	0.259
Mortgage servicing rights | Option adjusted spread | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Weighted average cost to service per loan	0.055	0.054
Rate lock commitments
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative assets	$ 37	$ 20
Rate lock commitments | Origination pull-through rate | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Rate lock commitment, fair value input	0.798	0.750
Rate lock commitments | Origination pull-through rate | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Rate lock commitment, fair value input	0.872	0.872
Rate lock commitments | Origination pull-through rate | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Rate lock commitment, fair value input	0.804	0.768
DOJ litigation settlement
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
DOJ litigation settlement	$ (60)	$ (60)
Contingent consideration
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Contingent consideration	$ (6)	$ (6)
Contingent consideration | Beta | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	0.6	0.6
Contingent consideration | Beta | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	1.6	1.6
Contingent consideration | Beta | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	1.1	1.1
Contingent consideration | Equity volatility | Lower range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	0.266	0.266
Contingent consideration | Equity volatility | Upper range
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	0.589	0.589
Contingent consideration | Equity volatility | Weighted Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair value inputs, equity volatility	0.400	0.400

Fair Value Measurements - Qua_2

Fair Value Measurements - Quantitative Information about Nonrecurring Level 3 Fair Value Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	$ 3,846		$ 3,732
Total assets at fair value	3,856		3,742
Net gain (loss) on loan sales	49	$ 60
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	7		5
Repossessed assets	8		7
Total assets at fair value	28		24
Fair value losses on loans	(1)		(1)
Fair value losses on repossessed assets	(3)		(3)
Net gain (loss) on loan sales	(9)		(8)
Nonrecurring | Residential first mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held-for-investment	13		12
Fair value losses on loans	(5)		(4)
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	7		5
Repossessed assets			0
Total assets at fair value	7		5
Nonrecurring | Level 2 | Residential first mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held-for-investment	0		0
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	0		0
Repossessed assets	8		7
Total assets at fair value	21		19
Nonrecurring | Level 3 | Residential first mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held-for-investment	$ 13		$ 12

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - Nonrecurring - Level 3 $ in Millions	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Residential first mortgage loans
Fair Value Inputs, Assets, Quantitative Information
Loans held-for-investment	$ 13	$ 12
Residential first mortgage loans | Loss severity discount | Lower range
Fair Value Inputs, Assets, Quantitative Information
Loans held for investment, fair value input	0.25	0.25
Residential first mortgage loans | Loss severity discount | Upper range
Fair Value Inputs, Assets, Quantitative Information
Loans held for investment, fair value input	0.30	0.30
Residential first mortgage loans | Loss severity discount | Weighted Average
Fair Value Inputs, Assets, Quantitative Information
Loans held for investment, fair value input	0.267	0.283
Repossessed assets
Fair Value Inputs, Assets, Quantitative Information
Loans held-for-investment	$ 8	$ 7
Repossessed assets | Loss severity discount | Lower range
Fair Value Inputs, Assets, Quantitative Information
Repossessed asset, fair value input	0	0
Repossessed assets | Loss severity discount | Upper range
Fair Value Inputs, Assets, Quantitative Information
Repossessed asset, fair value input	1	1
Repossessed assets | Loss severity discount | Weighted Average
Fair Value Inputs, Assets, Quantitative Information
Repossessed asset, fair value input	0.233	0.258

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Fair Value Included in Earnings (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Investment securities available-for-sale	$ 2,142	$ 2,142
Investment securities held-to-maturity	666	681
Loans held-for-sale	3,846	3,732
Loans held-for-investment	10	10
Mortgage servicing rights	278	290
Carrying Value
Assets
Cash and cash equivalents	390	408
Investment securities available-for-sale	2,142	2,142
Investment securities held-to-maturity	683	703
Loans held-for-sale	3,874	3,869
Loans held-for-investment	9,936	9,088
Loans with government guarantees	470	392
Mortgage servicing rights	278	290
Federal Home Loan Bank stock	303	303
Bank owned life insurance	342	340
Repossessed assets	8	7
Other assets, foreclosure claims	53	50
Derivative financial instruments, assets	57	57
Liabilities
Federal Home Loan Bank advances	(3,351)	(3,351)
Long-term debt	(495)	(495)
DOJ litigation settlement	(60)	(60)
Contingent consideration	(6)	(6)
Derivative financial instruments, liabilities	(46)	(46)
Carrying Value | Demand deposits and savings accounts
Liabilities
Deposits	(6,431)	(6,431)
Carrying Value | Certificates of deposit
Liabilities
Deposits	(2,584)	(2,584)
Carrying Value | Wholesale deposits
Liabilities
Deposits	(467)	(583)
Carrying Value | Government deposits
Liabilities
Deposits	(1,187)	(1,187)
Carrying Value | Custodial deposits
Liabilities
Deposits	(2,784)	(2,784)
Estimated Fair Value
Assets
Cash and cash equivalents	390	408
Investment securities available-for-sale	2,142	2,142
Investment securities held-to-maturity	666	681
Loans held-for-sale	3,874	3,870
Loans held-for-investment	10,093	8,966
Loans with government guarantees	451	374
Mortgage servicing rights	278	290
Federal Home Loan Bank stock	303	303
Bank owned life insurance	342	340
Repossessed assets	8	7
Other assets, foreclosure claims	53	50
Derivative financial instruments, assets	57	47
Liabilities
Federal Home Loan Bank advances	(3,343)	(3,383)
Long-term debt	(459)	(463)
DOJ litigation settlement	(60)	(60)
Contingent consideration	(6)	(6)
Derivative financial instruments, liabilities	(46)	(39)
Estimated Fair Value | Demand deposits and savings accounts
Liabilities
Deposits	(5,529)	(5,475)
Estimated Fair Value | Certificates of deposit
Liabilities
Deposits	(2,590)	(2,379)
Estimated Fair Value | Wholesale deposits
Liabilities
Deposits	(468)	(585)
Estimated Fair Value | Government deposits
Liabilities
Deposits	(1,116)	(1,145)
Estimated Fair Value | Custodial deposits
Liabilities
Deposits	(2,738)	(1,664)
Estimated Fair Value | Level 1
Assets
Cash and cash equivalents	390	408
Investment securities available-for-sale	0	0
Investment securities held-to-maturity	0	0
Loans held-for-sale	0	0
Loans held-for-investment	0	0
Loans with government guarantees	0	0
Mortgage servicing rights	0	0
Federal Home Loan Bank stock	0	0
Bank owned life insurance	0	0
Repossessed assets	0	0
Other assets, foreclosure claims	0	0
Derivative financial instruments, assets	0	0
Liabilities
Federal Home Loan Bank advances	0	0
Long-term debt	0	0
DOJ litigation settlement	0	0
Contingent consideration	0	0
Derivative financial instruments, liabilities	0	0
Estimated Fair Value | Level 1 | Demand deposits and savings accounts
Liabilities
Deposits	0	0
Estimated Fair Value | Level 1 | Certificates of deposit
Liabilities
Deposits	0	0
Estimated Fair Value | Level 1 | Wholesale deposits
Liabilities
Deposits	0	0
Estimated Fair Value | Level 1 | Government deposits
Liabilities
Deposits	0	0
Estimated Fair Value | Level 1 | Custodial deposits
Liabilities
Deposits	0	0
Estimated Fair Value | Level 2
Assets
Cash and cash equivalents	0	0
Investment securities available-for-sale	2,142	2,142
Investment securities held-to-maturity	666	681
Loans held-for-sale	3,874	3,870
Loans held-for-investment	8	8
Loans with government guarantees	451	374
Mortgage servicing rights	0	0
Federal Home Loan Bank stock	303	303
Bank owned life insurance	342	340
Repossessed assets	0	0
Other assets, foreclosure claims	53	50
Derivative financial instruments, assets	20	27
Liabilities
Federal Home Loan Bank advances	(3,343)	(3,383)
Long-term debt	(459)	(463)
DOJ litigation settlement	0	0
Contingent consideration	0	0
Derivative financial instruments, liabilities	(46)	(39)
Estimated Fair Value | Level 2 | Demand deposits and savings accounts
Liabilities
Deposits	(5,529)	(5,475)
Estimated Fair Value | Level 2 | Certificates of deposit
Liabilities
Deposits	(2,590)	(2,379)
Estimated Fair Value | Level 2 | Wholesale deposits
Liabilities
Deposits	(468)	(585)
Estimated Fair Value | Level 2 | Government deposits
Liabilities
Deposits	(1,116)	(1,145)
Estimated Fair Value | Level 2 | Custodial deposits
Liabilities
Deposits	(2,738)	(1,664)
Estimated Fair Value | Level 3
Assets
Cash and cash equivalents	0	0
Investment securities available-for-sale	0	0
Investment securities held-to-maturity	0	0
Loans held-for-sale	0	0
Loans held-for-investment	10,085	8,958
Loans with government guarantees	0	0
Mortgage servicing rights	278	290
Federal Home Loan Bank stock	0	0
Bank owned life insurance	0	0
Repossessed assets	8	7
Other assets, foreclosure claims	0	0
Derivative financial instruments, assets	37	20
Liabilities
Federal Home Loan Bank advances	0	0
Long-term debt	0	0
DOJ litigation settlement	(60)	(60)
Contingent consideration	(6)	(6)
Derivative financial instruments, liabilities	0	0
Estimated Fair Value | Level 3 | Demand deposits and savings accounts
Liabilities
Deposits	0	0
Estimated Fair Value | Level 3 | Certificates of deposit
Liabilities
Deposits	0	0
Estimated Fair Value | Level 3 | Wholesale deposits
Liabilities
Deposits	0	0
Estimated Fair Value | Level 3 | Government deposits
Liabilities
Deposits	0	0
Estimated Fair Value | Level 3 | Custodial deposits
Liabilities
Deposits	$ 0	$ 0

Fair Value Measurements - Diffe

Fair Value Measurements - Differences Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	$ 3,718		$ 3,619
Total assets at fair value	3,856		3,742
Assets, fair value over/(under) UPB	138		123
Litigation settlement
Fair Value, Option, Quantitative Disclosures [Line Items]
Litigation settlement payment amount	118
Nonperforming
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	12		10
Total assets at fair value	11		9
Assets, fair value over/(under) UPB	(1)		(1)
Performing
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	3,706		3,609
Total assets at fair value	3,845		3,733
Assets, fair value over/(under) UPB	139		124
Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	3,706		3,607
Total assets at fair value	3,846		3,732
Assets, fair value over/(under) UPB	140		125
Loans held-for-sale | Nonperforming
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	8		6
Total assets at fair value	8		6
Assets, fair value over/(under) UPB	0		0
Loans held-for-sale | Performing
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	3,698		3,601
Total assets at fair value	3,838		3,726
Assets, fair value over/(under) UPB	140		125
Loans held-for-investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	12		12
Total assets at fair value	10		10
Assets, fair value over/(under) UPB	(2)		(2)
Loans held-for-investment | Nonperforming
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	4		4
Total assets at fair value	3		3
Assets, fair value over/(under) UPB	(1)		(1)
Loans held-for-investment | Performing
Fair Value, Option, Quantitative Disclosures [Line Items]
Assets, unpaid principal balance (UPB)	8		8
Total assets at fair value	7		7
Assets, fair value over/(under) UPB	(1)		(1)
Litigation settlement
Fair Value, Option, Quantitative Disclosures [Line Items]
Liabilities, unpaid principal balance (UPB)	(118)		(118)
Long-term debt, fair value	(60)		(60)
Liabilities, fair value over/(under) UPB	58		$ 58
Net gain (loss) on loan sales | Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value, gain (loss)	$ 79	$ (88)

Segment Information - Narrative

Segment Information - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)segment
Segment Reporting Information [Line Items]
Number of operating segments | segment	3
Outgoing Wires, Overdrafts Stop Payments and ATM Fees
Segment Reporting Information [Line Items]
Revenues	$ 6
Interchange Fees
Segment Reporting Information [Line Items]
Revenues	3
Investment and Insurance Income
Segment Reporting Information [Line Items]
Revenues	$ 1

Segment Information - Financial

Segment Information - Financial Information by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary of Operations
Net interest income	$ 126	$ 106
Net gain (loss) on loan sales	49	60
Other noninterest income (loss)	60	51
Total net interest income and noninterest income (loss)	235	217
(Provision) benefit for loan losses	0	0
Compensation and benefits	(87)	(80)
Other noninterest expense and directly allocated overhead	(104)	(93)
Total noninterest expense	(191)	(173)
Income (loss) before indirect overhead allocations and income taxes	44	44
Overhead allocations	0	0
(Provision) benefit for income taxes	(8)	(9)
Net income	36	35
Average balances
Loans held-for-sale	3,266	4,231
Loans with government guarantees	455	291
Loans held-for-investment	9,197	7,524
Total assets	18,438	17,090
Deposits	12,906	9,371
Intersegment Eliminations
Summary of Operations
Total net interest income and noninterest income (loss)	0	0
Community Banking
Summary of Operations
Net interest income	103	69
Net gain (loss) on loan sales	(6)	(2)
Other noninterest income (loss)	12	8
Total net interest income and noninterest income (loss)	109	75
(Provision) benefit for loan losses	(1)	(1)
Compensation and benefits	(24)	(17)
Other noninterest expense and directly allocated overhead	(41)	(26)
Total noninterest expense	(65)	(43)
Income (loss) before indirect overhead allocations and income taxes	43	31
Overhead allocations	(10)	(11)
(Provision) benefit for income taxes	(7)	(4)
Net income	26	16
Average balances
Loans held-for-sale	71	12
Loans with government guarantees	0	0
Loans held-for-investment	9,156	7,489
Total assets	9,577	7,638
Deposits	9,983	7,739
Community Banking | Intersegment Eliminations
Summary of Operations
Total net interest income and noninterest income (loss)	(4)	(1)
Mortgage Originations
Summary of Operations
Net interest income	23	31
Net gain (loss) on loan sales	55	62
Other noninterest income (loss)	16	19
Total net interest income and noninterest income (loss)	94	112
(Provision) benefit for loan losses	0	0
Compensation and benefits	(24)	(29)
Other noninterest expense and directly allocated overhead	(36)	(41)
Total noninterest expense	(60)	(70)
Income (loss) before indirect overhead allocations and income taxes	34	42
Overhead allocations	(10)	(18)
(Provision) benefit for income taxes	(5)	(5)
Net income	19	19
Average balances
Loans held-for-sale	3,195	4,219
Loans with government guarantees	455	291
Loans held-for-investment	12	6
Total assets	4,624	5,527
Deposits	0	0
Mortgage Originations | Intersegment Eliminations
Summary of Operations
Total net interest income and noninterest income (loss)	7	0
Mortgage Servicing
Summary of Operations
Net interest income	3	2
Net gain (loss) on loan sales	0	0
Other noninterest income (loss)	35	19
Total net interest income and noninterest income (loss)	38	21
(Provision) benefit for loan losses	0	0
Compensation and benefits	(6)	(4)
Other noninterest expense and directly allocated overhead	(25)	(16)
Total noninterest expense	(31)	(20)
Income (loss) before indirect overhead allocations and income taxes	7	1
Overhead allocations	(5)	(5)
(Provision) benefit for income taxes	0	0
Net income	2	(4)
Average balances
Loans held-for-sale	0	0
Loans with government guarantees	0	0
Loans held-for-investment	0	0
Total assets	56	35
Deposits	2,528	1,541
Mortgage Servicing | Intersegment Eliminations
Summary of Operations
Total net interest income and noninterest income (loss)	6	5
Other
Summary of Operations
Net interest income	(3)	4
Net gain (loss) on loan sales	0	0
Other noninterest income (loss)	(3)	5
Total net interest income and noninterest income (loss)	(6)	9
(Provision) benefit for loan losses	1	1
Compensation and benefits	(33)	(30)
Other noninterest expense and directly allocated overhead	(2)	(10)
Total noninterest expense	(35)	(40)
Income (loss) before indirect overhead allocations and income taxes	(40)	(30)
Overhead allocations	25	34
(Provision) benefit for income taxes	4	0
Net income	(11)	4
Average balances
Loans held-for-sale	0	0
Loans with government guarantees	0	0
Loans held-for-investment	29	29
Total assets	4,181	3,890
Deposits	395	91
Other | Intersegment Eliminations
Summary of Operations
Total net interest income and noninterest income (loss)	$ (9)	$ (4)

Recently Issued Accounting Pr_4

Recently Issued Accounting Pronouncements - Information Relating to Operating Leases (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Accounting Policies [Abstract]
Right-of-use asset	$ 20
Lease liability	20
Lease expense	$ 3
Weighted-average remaining lease term	4 years 2 months 23 days
Weighted-average discount rate	2.95%

Recently Issued Accounting Pr_5

Recently Issued Accounting Pronouncements - Undiscounted Cash Flows on Operating Leases (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
March 31, 2019
Within one year	$ 8
After one year and within two years	5
After two years and within three years	4
After three years and within four years	2
After four years and within five years	1
After five years	2
Total	$ 22
December 31, 2018
Year 1		$ 9
After one year and within two years		6
After two years and within three years		4
After three years and within four years		2
After four years and within five years		1
After five years		3
Total		$ 25

Subsequent Events - Credit Expo

Subsequent Events - Credit Exposure to Commercial Borrower (Details) - USD ($) $ in Millions	May 10, 2019	Mar. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Amount outstanding		$ 9,936	$ 9,088
Collateralized
Subsequent Event [Line Items]
Amount outstanding		75
Collateralized | Subsequent Event
Subsequent Event [Line Items]
Amount outstanding	$ 82
C&I Loan
Subsequent Event [Line Items]
Amount outstanding		1,651	1,433
C&I Loan | Commercial Borrower | Collateralized
Subsequent Event [Line Items]
Amount outstanding		69
C&I Loan | Commercial Borrower | Collateralized | Subsequent Event
Subsequent Event [Line Items]
Amount outstanding	69
Warehouse Lending
Subsequent Event [Line Items]
Amount outstanding		1,632	$ 1,459
Warehouse Lending | Commercial Borrower | Collateralized
Subsequent Event [Line Items]
Amount outstanding		$ 6
Warehouse Lending | Commercial Borrower | Collateralized | Subsequent Event
Subsequent Event [Line Items]
Amount outstanding	$ 13

Subsequent Events - Narrative (

Subsequent Events - Narrative (Details) - USD ($) $ in Millions	May 10, 2019	Mar. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Estimated fair value of loans		$ 10	$ 10
C&I Loan | Commercial Borrower | Interest-Only GNMA Securities | Minimum | Subsequent Event
Subsequent Event [Line Items]
Estimated fair value of loans	$ 0
C&I Loan | Commercial Borrower | Interest-Only GNMA Securities | Maximum | Subsequent Event
Subsequent Event [Line Items]
Estimated fair value of loans	$ 40