WEX (WEX) 10-Q 8 Nov 19 2019 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-32426
Entity Registrant Name	WEX Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0526993
Entity Address, Address Line One	1 Hancock St.,
Entity Address, City or Town	Portland,
Entity Address, State or Province	ME
Entity Address, Postal Zip Code	04101
City Area Code	207
Local Phone Number	773–8171
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	WEX
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		43,289,614
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001309108
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Payment processing revenue	$ 326,873	$ 244,872	$ 907,334	$ 721,411
Account servicing revenue	109,205	78,748	303,183	236,168
Finance fee revenue	66,382	57,673	175,667	158,107
Other revenue	59,620	67,325	178,416	187,105
Total revenues	459,963	386,617	1,283,646	1,111,443
Cost of services
Service fees	14,905	13,818	43,348	39,847
Provision for credit losses	14,847	22,549	47,470	50,411
Operating interest	11,508	10,268	31,765	28,281
Depreciation and amortization	26,123	19,013	68,206	60,058
Total cost of services	165,679	146,838	479,685	410,358
General and administrative	65,423	51,126	206,075	154,148
Sales and marketing	73,689	54,611	210,639	168,849
Depreciation and amortization	36,861	29,054	105,264	88,817
Impairment charge	0	2,424	0	2,424
Operating income	118,311	102,564	281,983	286,847
Financing interest expense	(34,549)	(25,718)	(101,299)	(78,560)
Net foreign currency loss	(16,528)	(1,094)	(13,748)	(27,438)
Net unrealized (loss) gain on financial instruments	(5,650)	2,157	(39,078)	18,371
Income before income taxes	61,584	77,909	127,858	199,220
Income taxes	19,137	21,305	37,352	51,379
Net income	42,447	56,604	90,506	147,841
Less: Net (loss) income from non-controlling interests	(631)	(40)	(233)	803
Net income attributable to WEX Inc.	43,078	56,644	90,739	147,038
Accretion of non-controlling interest	(28,459)	0	(46,179)	0
Net income attributable to shareholders	$ 14,619	$ 56,644	$ 44,560	$ 147,038
Net income attributable to shareholders per share:
Basic (in dollars per share)	$ 0.34	$ 1.31	$ 1.03	$ 3.41
Diluted (in dollars per share)	$ 0.33	$ 1.30	$ 1.02	$ 3.38
Weighted average common shares outstanding:
Basic (in shares)	43,349	43,191	43,300	43,141
Diluted (in shares)	43,811	43,615	43,715	43,558
Payment processing revenue
Revenues
Payment processing revenue	$ 224,756	$ 182,871	$ 626,380	$ 530,063
Cost of services
Processing costs	$ 98,296	$ 81,190	$ 288,896	$ 231,761

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 42,447	$ 56,604	$ 90,506	$ 147,841
Foreign currency translation	(15,333)	(6,092)	(15,317)	(17,574)
Comprehensive income	27,114	50,512	75,189	130,267
Less: Comprehensive (loss) income attributable to non-controlling interests	(1,052)	(109)	(681)	540
Comprehensive income attributable to WEX Inc.	$ 28,166	$ 50,621	$ 75,870	$ 129,727

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 531,410	$ 541,498
Restricted cash	139,785	13,533
Accounts receivable (net of allowances of $49,265 in 2019 and $46,948 in 2018)	3,181,272	2,584,203
Securitized accounts receivable, restricted	119,134	109,871
Prepaid expenses and other current assets	82,857	149,021
Total current assets	4,054,458	3,398,126
Property, equipment and capitalized software (net of accumulated depreciation of $345,324 in 2019 and $307,750 in 2018)	207,647	187,868
Goodwill	2,436,411	1,832,129
Other intangible assets (net of accumulated amortization of $621,588 in 2019 and $509,055 in 2018)	1,615,206	1,034,194
Investment securities	30,458	24,406
Deferred income taxes, net	12,713	9,643
Other assets	184,413	284,229
Total assets	8,541,306	6,770,595
Liabilities and Stockholders’ Equity
Accounts payable	1,224,737	814,742
Accrued expenses	305,855	312,268
Restricted cash payable	139,785	13,533
Short-term deposits	1,158,643	927,444
Short-term debt, net	196,586	216,517
Other current liabilities	87,708	27,067
Total current liabilities	3,113,314	2,311,571
Long-term debt, net	2,700,649	2,133,923
Long-term deposits	416,295	345,231
Deferred income taxes, net	205,677	151,685
Other liabilities	107,183	32,261
Total liabilities	6,543,118	4,974,671
Commitments and contingencies (Note 15)
Redeemable non-controlling interest	146,218	0
Stockholders’ Equity
Common stock $0.01 par value; 175,000 shares authorized; 47,717 issued in 2019 and 47,557 in 2018; 43,289 shares outstanding in 2019 and 43,129 in 2018	477	475
Additional paid-in capital	661,696	593,262
Retained earnings	1,484,753	1,481,593
Accumulated other comprehensive loss	(132,160)	(117,291)
Treasury stock at cost; 4,428 shares in 2019 and 2018	(172,342)	(172,342)
Total WEX Inc. stockholders’ equity	1,842,424	1,785,697
Non-controlling interest	9,546	10,227
Total stockholders’ equity	1,851,970	1,795,924
Total liabilities and stockholders’ equity	$ 8,541,306	$ 6,770,595

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, reserve for credit losses	$ 49,265	$ 46,948
Property, equipment and capitalized software, accumulated depreciation	345,324	307,750
Accumulated amortization	$ 621,588	$ 509,055
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	175,000,000	175,000,000
Common stock, shares issued (in shares)	47,717,000	47,557,000
Common stock, shares outstanding (in shares)	43,289,000	43,129,000
Treasury stock, shares (in shares)	4,428,000	4,428,000

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Issued	Additional Paid–In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non–Controlling Interest
Beginning Balance (in shares) at Dec. 31, 2017		47,352
Beginning balance at Dec. 31, 2017	$ 1,630,100	$ 473	$ 569,319	$ 1,312,660	$ (89,230)	$ (172,342)	$ 9,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		148
Stock issued	576	$ 2	574
Share repurchases for tax withholdings	(11,810)		(11,810)
Stock-based compensation expense	8,955		8,955
Foreign currency translation	1,693				1,403		290
Net income	52,671			51,970			701
Ending Balance (in shares) at Mar. 31, 2018		47,500
Ending balance at Mar. 31, 2018	1,682,823	$ 475	567,038	1,365,268	(87,827)	(172,342)	10,211
Beginning Balance (in shares) at Dec. 31, 2017		47,352
Beginning balance at Dec. 31, 2017	1,630,100	$ 473	569,319	1,312,660	(89,230)	(172,342)	9,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	147,841
Ending Balance (in shares) at Sep. 30, 2018		47,528
Ending balance at Sep. 30, 2018	1,775,736	$ 475	584,047	1,460,337	(106,541)	(172,342)	9,760
Beginning Balance (in shares) at Mar. 31, 2018		47,500
Beginning balance at Mar. 31, 2018	1,682,823	$ 475	567,038	1,365,268	(87,827)	(172,342)	10,211
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		14
Stock issued	875	$ 0	875
Share repurchases for tax withholdings	0		0
Stock-based compensation expense	6,905		6,905
Foreign currency translation	(13,175)				(12,691)		(484)
Net income	38,567			38,425			142
Ending Balance (in shares) at Jun. 30, 2018		47,514
Ending balance at Jun. 30, 2018	1,715,995	$ 475	574,818	1,403,693	(100,518)	(172,342)	9,869
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		14
Stock issued	794	$ 0	794
Share repurchases for tax withholdings	(362)		(362)
Stock-based compensation expense	8,797		8,797
Foreign currency translation	(6,092)				(6,023)		(69)
Net income	56,604			56,644			(40)
Ending Balance (in shares) at Sep. 30, 2018		47,528
Ending balance at Sep. 30, 2018	1,775,736	$ 475	584,047	1,460,337	(106,541)	(172,342)	9,760
Beginning Balance (in shares) at Dec. 31, 2018		47,557
Beginning balance at Dec. 31, 2018	1,795,924	$ 475	593,262	1,481,593	(117,291)	(172,342)	10,227
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		117
Stock issued	405	$ 1	404
Share repurchases for tax withholdings	(9,723)		(9,723)
Stock-based compensation expense	9,703		9,703
Adjustments of redeemable non-controlling interest	0		41,400	(41,400)
Foreign currency translation	4,371				4,409		(38)
Net income	16,208			16,134			74
Ending Balance (in shares) at Mar. 31, 2019		47,674
Ending balance at Mar. 31, 2019	1,816,888	$ 476	635,046	1,456,327	(112,882)	(172,342)	10,263
Beginning Balance (in shares) at Dec. 31, 2018		47,557
Beginning balance at Dec. 31, 2018	1,795,924	$ 475	593,262	1,481,593	(117,291)	(172,342)	10,227
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments of redeemable non-controlling interest	(41,400)
Net income	90,506
Ending Balance (in shares) at Sep. 30, 2019		47,717
Ending balance at Sep. 30, 2019	1,851,970	$ 477	661,696	1,484,753	(132,160)	(172,342)	9,546
Beginning Balance (in shares) at Mar. 31, 2019		47,674
Beginning balance at Mar. 31, 2019	1,816,888	$ 476	635,046	1,456,327	(112,882)	(172,342)	10,263
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		27
Stock issued	1,876	$ 1	1,875
Share repurchases for tax withholdings	(135)		(135)
Stock-based compensation expense	15,158		15,158
Adjustments of redeemable non-controlling interest	(17,720)			(17,720)
Foreign currency translation	(4,355)				(4,366)		11
Net income	31,851			31,527			324
Ending Balance (in shares) at Jun. 30, 2019		47,701
Ending balance at Jun. 30, 2019	1,843,563	$ 477	651,944	1,470,134	(117,248)	(172,342)	10,598
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (in shares)		16
Stock issued	1,198	$ 0	1,198
Share repurchases for tax withholdings	(181)		(181)
Stock-based compensation expense	8,735		8,735
Adjustments of redeemable non-controlling interest	(28,459)			(28,459)
Foreign currency translation	(15,333)				(14,912)		(421)
Net income	42,447			43,078			(631)
Ending Balance (in shares) at Sep. 30, 2019		47,717
Ending balance at Sep. 30, 2019	$ 1,851,970	$ 477	$ 661,696	$ 1,484,753	$ (132,160)	$ (172,342)	$ 9,546

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 90,506	$ 147,841
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Net unrealized loss	43,618	3,871
Stock-based compensation	33,596	24,657
Depreciation and amortization	173,470	148,875
Debt restructuring and debt issuance cost amortization	7,561	7,717
Provision for deferred taxes	5,842	20,356
Provision for credit losses	47,470	50,411
Impairment charge	0	2,424
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable and securitized accounts receivable	(589,127)	(663,936)
Prepaid expenses and other current and other long-term assets	30,856	116,043
Accounts payable	412,700	341,548
Accrued expenses and restricted cash payable	(15,208)	(5,385)
Income taxes	(15,020)	7,402
Other current and other long-term liabilities	(14,170)	(8,411)
Amounts due under tax receivable agreement	(6,859)	(5,727)
Net cash provided by operating activities	205,235	187,686
Cash flows from investing activities
Purchases of property, equipment and capitalized software	(79,095)	(53,416)
Acquisitions, net of cash acquired	(838,006)	0
Purchase of equity investment	0	(2,617)
Purchases of investment securities	(5,430)	(1,627)
Maturities of investment securities	219	181
Net cash used for investing activities	(922,312)	(57,479)
Cash flows from financing activities
Repurchase of share-based awards to satisfy tax withholdings	(10,039)	(12,172)
Proceeds from stock option exercises	3,479	2,245
Net change in deposits	297,957	(28,485)
Net activity on other debt	(85,750)	(44,201)
Borrowings on revolving credit facility	1,267,704	1,219,693
Repayments on revolving credit facility	(1,265,251)	(1,355,931)
Borrowings on term loans	688,991	178,000
Repayments on term loans	(48,177)	(26,971)
Debt issuance costs	(3,443)	(5,310)
Net change in securitized debt	(7,766)	(7,826)
Net cash provided by (used for) financing activities	837,705	(80,958)
Effect of exchange rates on cash, cash equivalents and restricted cash	(4,464)	(15,577)
Net change in cash, cash equivalents and restricted cash	116,164	33,672
Cash, cash equivalents and restricted cash, beginning of period	555,031	522,385
Cash, cash equivalents and restricted cash, end of period	671,195	556,057
Supplemental disclosure of non-cash investing and financing activities
Capital expenditures incurred but not paid	$ 1,602	$ 5,608

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10–Q and Rule 10–01 of Regulation S–X. Accordingly, they do not include all information and notes required by GAAP for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the financial statements that are included in the Company’s Annual Report on Form 10–K for the year ended December 31, 2018 , filed with the SEC on March 18, 2019 and our Form 10–K/A filed with the SEC on March 20, 2019. In the opinion of management, all adjustments, including normal recurring accruals, considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results for any future periods or the year ending December 31, 2019 . In August 2018, the SEC issued an amendment to Rule 3–04 of Regulation S–X requiring both year-to-date information and subtotals for each interim period. We have elected to expand our analysis of changes in stockholders’ equity as of September 30, 2019 in statement form for each of the current and comparative quarter-to-date and year-to-date periods. Effective in the first quarter of 2019, the Company modified the presentation of the unaudited condensed consolidated balance sheets to separately classify its restricted cash payable. The prior period has been reclassified to conform with this presentation, which did not result in a change to current liabilities. We apply the same accounting policies in preparing our quarterly and annual financial statements, with the exception of the new leasing standard, which was required to be adopted January 1, 2019 (refer to Note 2, Recent Accounting Pronouncements ). The Company rounds amounts in the unaudited condensed consolidated financial statements to thousands and calculates all per-share data from underlying whole-dollar amounts. Thus, certain amounts may not foot, crossfoot or recalculate based on reported numbers due to rounding. Revision of Prior Period Unaudited Condensed Consolidated Financial Statements for Correction of Immaterial Errors As more fully described in our Annual Report on Form 10–K for the year ended December 31, 2018, in 2018 we revised our prior year financial statements to correct for immaterial errors in the financial statements of our Brazilian subsidiary and certain other immaterial errors impacting prior years that were not previously recorded. The accompanying quarterly financial statements have been revised for these errors. Collectively, hereinafter these revisions to correct are referred to as the “Revised” financial statements or the “Revision”. Management believes that the effects of this Revision are not material to our previously issued unaudited condensed consolidated financial statements. The effects of the Revision on our unaudited condensed consolidated statements of income and cash flows were as follows: Three Months Ended September 30, 2018 (In thousands, except per share data) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Total revenues $ 382,690 $ (614 ) $ 4,541 $ 386,617 Processing costs $ 79,580 $ 1,610 $ — $ 81,190 Provision for credit losses $ 21,435 $ 1,114 $ — $ 22,549 General and administrative $ 51,799 $ — $ (673 ) $ 51,126 Operating income $ 100,688 $ (3,338 ) $ 5,214 $ 102,564 Income taxes $ 18,751 $ (1,779 ) $ 4,333 $ 21,305 Net income $ 57,282 $ (1,559 ) $ 881 $ 56,604 Net income attributable to shareholders $ 57,322 $ (1,559 ) $ 881 $ 56,644 Net income attributable to shareholders per share Basic $ 1.33 $ (0.04 ) $ 0.02 $ 1.31 Diluted $ 1.31 $ (0.04 ) $ 0.02 $ 1.30 Nine Months Ended September 30, 2018 (In thousands, except per share data) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Total revenues $ 1,108,395 $ (2,675 ) $ 5,723 $ 1,111,443 Processing costs $ 235,508 $ (3,747 ) $ — $ 231,761 Provision for credit losses $ 46,930 $ 3,481 $ — $ 50,411 General and administrative $ 155,720 $ — $ (1,572 ) $ 154,148 Operating income $ 281,961 $ (2,409 ) $ 7,295 $ 286,847 Income taxes $ 48,278 $ (1,676 ) $ 4,777 $ 51,379 Net income $ 146,056 $ (733 ) $ 2,518 $ 147,841 Net income attributable to shareholders $ 145,253 $ (733 ) $ 2,518 $ 147,038 Net income attributable to shareholders per share Basic $ 3.37 $ (0.02 ) $ 0.06 $ 3.41 Diluted $ 3.33 $ (0.02 ) $ 0.06 $ 3.38 Nine Months Ended September 30, 2018 (In thousands) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Net cash provided by operating activities $ 183,133 $ — $ 4,553 $ 187,686 Cash, cash equivalents and restricted cash, beginning of period $ 526,938 $ — $ (4,553 ) $ 522,385

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements The following table provides a brief description of accounting pronouncements adopted during the nine months ended September 30, 2019 and recent accounting pronouncements that could have a material effect on our financial statements: Standard Description Date/Method of Adoption Effect on financial statements or other significant matters Adopted During the Nine Months Ended September 30, 2019 ASU 2016–02 This standard requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The Company adopted ASU 2016–02 effective January 1, 2019, using the modified retrospective approach and all practical expedients permitted under the transition guidance. In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016–02, Leases (Topic 842), which requires leases with a duration greater than twelve months to be recognized on the balance sheet as right-of-use (“ROU”) assets and lease liabilities. We adopted the new standard using the modified retrospective approach and have elected the package of practical expedients permitted under the transition guidance, but have not utilized the hindsight practical expedient for expired or existing contracts. Therefore, we carried forward our historical determination of (i) whether a contract is or contains a lease, (ii) lease classification and (iii) initial direct costs. Additionally, we elected the practical expedients, which allowed us to (i) not perform an allocation of lease and non-lease components for real estate leases, (ii) continue to account for short-term leases under Topic 840 and (iii) utilize our incremental borrowing rate (“IBR”), rather than the rate implicit in each lease, to calculate the present value of the remaining lease payments. As such, the unaudited condensed consolidated financial statements for the period ended September 30, 2019 are presented under the new standard, while comparative periods presented continue to be reported in accordance with Topic 840. The most significant impact of adoption was the recording of operating lease ROU assets and operating lease liabilities on our unaudited condensed consolidated balance sheets at January 1, 2019. Refer to Note 14, Leases, for more information. The standard did not materially impact our results of operations or cash flows. ASU 2018 – 15 This standard clarifies the accounting for capitalizing implementation costs in a cloud computing arrangement that is a service contract. The standard provides that implementation costs be treated using the same criteria used for internal-use software development costs, with amortization expense being recorded in the same income statement expense line as the hosted service costs and over the expected term of the hosting arrangement. Effective January 1, 2019, the Company early adopted ASU 2018–15 on a prospective basis. Under the standard, we now capitalize implementation costs related to our cloud migration of technology platforms to the cloud. Such amounts are amortized over the lesser of the term of the hosting arrangement, considering any explicit renewal options for which we are reasonably certain to exercise, or the useful life of the underlying hosted software. This standard did not materially impact our results of operations, cash flows or consolidated financial position. Not Yet Adopted as of September 30, 2019 ASU 2016 – 13 This standard requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that impact the collectability of the reported amount. The standard is effective January 1, 2020. The current expected credit loss model outlined in the ASU differs from existing US GAAP as it is based on expected rather than incurred losses. The standard requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. The Company has established a cross-functional task force charged with evaluating the requirements of the new standard, the availability and extent of historical data, relevant economic indicators and the impact this standard will have on our processes, systems and internal controls. We are currently in the process of gathering historical data, selecting our credit loss model, assessing system requirements and evaluating disclosure requirements. Though the Company continues to assess the impact of adoption, we currently believe the most significant effects of the ASU will be incorporating economic factors into our credit loss reserve methodologies and providing expanded disclosures on expected credit losses. At this time, the impact on credit loss reserves is not expected to be material.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue	3. Revenue In accordance with Topic 606, revenue is recognized when, or as, performance obligations are satisfied as defined by the terms of the contract, in an amount that reflects the consideration to which the Company expects to be entitled in exchange for goods or services provided. The following tables disaggregate our consolidated revenue: Three Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 125,288 $ 85,128 $ 14,340 $ 224,756 Account servicing revenue 7,165 10,717 56,451 74,333 Other revenue 19,851 690 7,243 27,784 Total Topic 606 revenues $ 152,304 $ 96,535 $ 78,034 $ 326,873 Non-Topic 606 revenues Account servicing revenue $ 34,872 $ — $ — $ 34,872 Finance fee revenue 65,818 645 (81 ) 66,382 Other revenue 24,532 1,948 5,356 31,836 Total non-Topic 606 revenues $ 125,222 $ 2,593 $ 5,275 $ 133,090 Total revenues $ 277,526 $ 99,128 $ 83,309 $ 459,963 Three Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 116,023 $ 54,345 $ 12,503 $ 182,871 Account servicing revenue 6,920 9,120 26,818 42,858 Other revenue 11,721 1,063 6,359 19,143 Total Topic 606 revenues $ 134,664 $ 64,528 $ 45,680 $ 244,872 Non-Topic 606 revenues Account servicing revenue $ 35,890 $ — $ — $ 35,890 Finance fee revenue 51,644 670 5,359 57,673 Other revenue 27,371 17,612 3,199 48,182 Total non-Topic 606 revenues $ 114,905 $ 18,282 $ 8,558 $ 141,745 Total revenues $ 249,569 $ 82,810 $ 54,238 $ 386,617 Nine Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 353,413 $ 222,399 $ 50,568 $ 626,380 Account servicing revenue 20,601 32,019 148,382 201,002 Other revenue 56,446 2,488 21,018 79,952 Total Topic 606 revenues $ 430,460 $ 256,906 $ 219,968 $ 907,334 Non-Topic 606 revenues Account servicing revenue $ 102,181 $ — $ — $ 102,181 Finance fee revenue 174,067 1,498 102 175,667 Other revenue 70,914 13,722 13,828 98,464 Total non-Topic 606 revenues $ 347,162 $ 15,220 $ 13,930 $ 376,312 Total revenues $ 777,622 $ 272,126 $ 233,898 $ 1,283,646 Nine Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 335,896 $ 150,411 $ 43,756 $ 530,063 Account servicing revenue 20,770 27,584 80,545 128,899 Other revenue 39,288 3,386 19,775 62,449 Total Topic 606 revenues $ 395,954 $ 181,381 $ 144,076 $ 721,411 Non-Topic 606 revenues Account servicing revenue $ 107,269 $ — $ — $ 107,269 Finance fee revenue 140,436 1,157 16,514 158,107 Other revenue 77,687 42,815 4,154 124,656 Total non-Topic 606 revenues $ 325,392 $ 43,972 $ 20,668 $ 390,032 Total revenues $ 721,346 $ 225,353 $ 164,744 $ 1,111,443 The vast majority of the above revenue relates to services transferred to the customer over time. Point-in-time revenue recognized was immaterial during the three and nine months ended September 30, 2019 and 2018 . Contract Balances The Company’s contract assets consist of upfront payments made to customers under long-term contracts and are recorded upon payment or when due. The resulting asset is amortized against revenue as the Company performs its obligations under these arrangements. The Company’s contract liabilities consist of customer payments received before the Company has satisfied the associated performance obligations and upfront payments due to the customer. The following table provides information about these contract balances: (In thousands) Contract balance Location on the unaudited condensed consolidated balance sheets September 30, 2019 December 31, 2018 Receivables 1 Accounts receivable, net $ 43,476 $ 32,949 Contract assets Prepaid expenses and other current assets $ 4,064 $ 3,819 Contract assets Other assets $ 19,514 $ 19,232 Contract liabilities Other current liabilities $ 3,402 $ 7,612 1 The majority of the Company’s receivables, which are excluded from the table above, are either due from cardholders, who have not been deemed our customer as it relates to interchange income, or from revenues earned outside of the scope of Topic 606. In the three and nine months ended September 30, 2019 , we recognized revenue of $3.8 million and $10.2 million related to contract liabilities. In the three and nine months ended September 30, 2018 , we recognized revenue of $2.9 million and $8.2 million related to contract liabilities. Remaining Performance Obligations The Company’s unsatisfied, or partially unsatisfied performance obligations as of September 30, 2019 represent the remaining minimum monthly fees on a portion of contracts across the lines of business and contractually obligated professional services yet to be provided by the Company. It is not indicative of the Company’s future revenue, as it relates to an insignificant portion of the Company’s operations. The following table includes revenue expected to be recognized related to remaining performance obligations at the end of the reporting period. (In thousands) Remaining 2019 2020 2021 2022 2023 2024 Total Minimum monthly fees 1 $ 16,164 $ 45,053 $ 26,797 $ 14,950 $ 4,449 $ 902 $ 108,315 Professional services 2 4,619 4,637 — — — — 9,256 Total remaining performance obligations $ 20,783 $ 49,690 $ 26,797 $ 14,950 $ 4,449 $ 902 $ 117,571 1 The transaction price allocated to the remaining performance obligations represents the minimum monthly fees on certain service contracts, which contain substantive termination penalties that require the counterparty to pay the Company for the aggregate remaining minimum monthly fees upon an early termination for convenience. 2 Includes software development projects and other services sold subsequent to the core offerings, to which the customer is contractually obligated.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisitions	4. Acquisitions Asset Acquisition In December 2016, the Company entered into a contract with Chevron to issue and operate branded commercial fleet cards commencing in 2018. During October 2018, the Company entered into a definitive asset purchase agreement to acquire Chevron’s existing trade accounts receivable and customer portfolio from a third party for approximately $223.4 million . During 2018, the consideration paid consisted of approximately $162.8 million to acquire the customer portfolio and a deposit of $38.9 million was paid into escrow for a portion of the outstanding accounts receivable at the date of agreement. The actual amount of accounts receivable purchased from the third party during the second quarter of 2019 was less than the amount deposited in escrow and the Company expects to receive the excess funds from the escrow agent in the fourth quarter of 2019. As of December 31, 2018, the deposit related to the customer portfolio was recorded within other assets, while the deposit for the purchase of customer receivables was recorded in prepaid expenses and other current assets. During the second quarter of 2019, the Company determined that it obtained control of the customer portfolio and accounted for this transaction under the asset acquisition method of accounting. At that time, we allocated approximately $168 million of consideration paid to a customer relationship intangible asset and established the accounts receivable at fair value. As of September 30, 2019 , the customer relationship and acquired customer receivables were recorded within other intangible assets and accounts receivable, respectively, on our unaudited condensed consolidated balance sheet. This customer relationship intangible asset is being amortized over the 13 year term of the Chevron agreement, which has been determined to be the period of anticipated benefit and began when the Company took possession of the customer portfolio during the second quarter of 2019. Transaction costs related to the acquisition were insignificant and expensed as incurred. Business Acquisitions Acquisition-related costs on completed business combinations were $2.4 million and $11.3 million for the three and nine months ended September 30, 2019 and immaterial for the same periods of 2018 . Discovery Benefits, Inc. On March 5, 2019, the Company acquired Discovery Benefits, an employee benefits administrator, for a total purchase price of $526.1 million , including $50 million payable in January 2020, which is recorded in other current liabilities. The acquisition was primarily funded with cash on hand and through borrowings under the 2016 Credit Agreement. The seller of Discovery Benefits obtained a 4.9 percent equity interest in the newly formed parent company of WEX Health and Discovery Benefits, which constitutes the U.S. Health business. The fair value of the equity interest was determined to be $100.0 million on the acquisition date. See Note 12, Redeemable Non-Controlling Interest, for further information. This acquisition has been accounted for as a business combination, with preliminary goodwill reflecting the comprehensive suite of products and services for our partners and customers and opening go-to-market channels to include consulting firms and brokers in our Health and Employee Benefit Solutions segment. The majority of the goodwill associated with this acquisition is deductible for tax purposes. The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Cash consideration, net of $125,865 in cash and restricted cash acquired $ 250,191 Fair value of redeemable non-controlling interest 100,000 Deferred cash consideration 50,000 Total consideration, net of cash and restricted cash acquired $ 400,191 Less: Accounts receivable 10,722 Property and equipment 4,904 Customer relationships (a)(d) 213,600 Developed technologies (b)(d) 38,900 Trademarks and trade names (c)(d) 13,800 Other assets 13,601 Accounts payable (3,071 ) Accrued expenses (7,563 ) Restricted cash payable (125,346 ) Deferred income taxes (22,200 ) Other liabilities (9,814 ) Recorded goodwill $ 272,658 (a) Weighted average life - 7.3 years . (b) Weighted average life - 5.4 years . (c) Weighted average life - 7.3 years . (d) The weighted average life of all amortizable intangible assets acquired in this business combination is 7.0 years . Since the acquisition date through September 30, 2019, DBI has contributed $65.6 million in total revenues, and the amount of income before income taxes contributed to Company operations was $4.7 million . Noventis, Inc. On January 24, 2019, the Company acquired Noventis, a long-time customer and electronic payments network focused on optimizing payment delivery for bills and invoices to commercial entities, for $338.7 million , which was primarily funded with cash on hand and through borrowings under the 2016 Credit Agreement. Excluded from the consideration is $5.5 million paid to certain Noventis shareholders who held unvested option awards at the acquisition date. The modification of these awards to accelerate the vesting resulted in the Company recording this expense as general and administrative expense in our unaudited condensed consolidated statements of income for the nine months ended September 30, 2019 . This acquisition, which expands our reach as a corporate payments supplier and provides more channels to billing aggregators and financial institutions in our Travel and Corporate Payment Solutions segment, was accounted for as a business combination, resulting in the recording of goodwill. The goodwill associated with this acquisition is not deductible for tax purposes. The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Total consideration, net of $44,947 in cash acquired $ 293,767 Less: Accounts receivable 22,134 Property and equipment 549 Network relationships (a) (c) 100,900 Developed technologies (b) (c) 15,000 Other assets 2,379 Accounts payable (33,521 ) Deferred income tax liabilities (24,121 ) Other liabilities (2,367 ) Recorded goodwill $ 212,814 (a) Weighted average life - 8.3 years . (b) Weighted average life - 2.9 years . (c) The weighted average life of all amortizable intangible assets acquired in this business combination is 7.6 years . Since the acquisition date through September 30, 2019, Noventis has contributed $31.8 million in total revenues, and the amount of income before income taxes contributed to Company operations was $5.0 million . Pavestone Capital, LLC On February 14, 2019, the Company acquired Pavestone Capital, a recourse factoring company that provides working capital to businesses, for a purchase price of $28.0 million , net of cash acquired. This acquisition, which was funded with cash on hand, has been accounted for as a business combination. Pavestone complements our existing factoring business and as a result the purchase price is primarily allocated to goodwill, accounts receivable and customer relationships in amounts of $9.5 million , $14.9 million and $3.9 million , respectively. The goodwill associated with this acquisition is deductible for tax purposes. Since the acquisition date, Pavestone Capital revenues and income before income taxes, which are recorded in our Fleet Solutions segment, were not material to Company operations. No pro forma or current information has been included in these financial statements as the operations of Pavestone Capital for the period that they were not part of the Company are not material to the Company’s revenues, net income and earnings per share. Go Fuel Card On July 1, 2019, the Company acquired Go Fuel Card, a European fuel card, for a total purchase price of €235.0 million (equivalent of $266.0 million on date of purchase). This acquisition, which was funded with cash on hand, was accounted for as a business combination. The acquisition strengthens our position in the European market, grows our existing customer base and reduces our sensitivity to retail fuel prices, resulting in the recording of goodwill. The goodwill associated with the acquisition of Go Fuel Card is deductible for tax purposes. The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Total consideration $ 266,044 Less: Accounts receivable 5,589 Network relationships (a) (d) 112,893 Customer relationships (b)(d) 33,963 Brand name (c) (d) 442 Deposits (5,169 ) Accrued expenses (420 ) Recorded goodwill $ 118,746 (a) Weighted average life - 10.1 years . (b) Weighted average life - 5.0 years . (c) Weighted average life - 1.0 year . (d) The weighted average life of all amortizable intangible assets acquired in this business combination is 8.9 years . Since the acquisition date through September 30, 2019, Go Fuel Card has contributed $5.0 million in total revenues, and the amount of loss before income taxes contributed to Company operations was $5.8 million . No pro forma information has been included in these financial statements as the operations of Go Fuel Card for the period that they were not part of the Company are not material to the Company’s revenues, net income and earnings per share. 2019 Business Acquisitions The Company has not finalized the purchase accounting for Discovery Benefits, Noventis, Pavestone or Go Fuel Card and is currently evaluating the tax basis and allocation of the net assets acquired. Additionally, the Company is performing valuations of intangible assets acquired in certain of the business combinations. The preliminary estimates could change significantly upon completion of these valuations. Pro Forma Supplemental Information The pro forma information below gives effect to the Discovery Benefits and Noventis acquisitions as if they had been completed on January 1, 2018. These pro forma results have been calculated after applying the Company’s accounting policies, adjustments to reflect amortization associated with intangibles acquired and interest expense associated with the incremental borrowings under the 2016 Credit Agreement used to fund the acquisitions and related income tax results. The pro forma financial information is presented for comparative purposes only, based on certain estimates and assumptions, which the Company believes to be reasonable but not necessarily indicative of future results of operations or the results that would have been reported if the acquisitions had been completed on January 1, 2018. The following represents unaudited pro forma operational results as if the acquisitions had occurred January 1, 2018: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Total revenues $ 459,963 $ 414,723 $ 1,302,752 $ 1,193,957 Net income attributable to shareholders $ 19,178 $ 49,546 $ 53,213 $ 125,823 Net income attributable to shareholders per share: Basic $ 0.44 $ 1.15 $ 1.23 $ 2.92 Diluted $ 0.44 $ 1.14 $ 1.22 $ 2.89

Accounts Receivable

Accounts Receivable	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Accounts Receivable	5. Accounts Receivable In general, the Company’s trade accounts receivable provide for payment terms of 30 days or less. Receivables not paid within the terms of the agreement are generally subject to late fees based upon the outstanding receivable balance. The Company extends revolving credit to certain small fleets, which are subject to interest charges based on the revolving balance not paid in full. The Company had approximately $66.8 million and $18.9 million in receivables with revolving credit balances as of September 30, 2019 and December 31, 2018 , respectively. The increase in revolving credit balances during the nine months ended September 30, 2019 was due to the onboarding of a customer portfolio. Concentration of Credit Risk The receivables portfolio consists of a large group of homogeneous smaller balances across a wide range of industries, which are collectively evaluated for impairment. No one customer receivable balance represented 10 percent or more of the outstanding receivables balance at September 30, 2019 or December 31, 2018 . The following table presents the outstanding balance of trade accounts receivable that are less than 30 and 60 days past due, in each case, as a percentage of total trade accounts receivable: Delinquency Status September 30, 2019 December 31, 2018 29 days or less past due 96 % 95 % 59 days or less past due 97 % 98 % Reserves for Accounts Receivable Receivables are generally written off when they are 150 days past due or upon declaration of bankruptcy of the customer. The reserve for credit losses is primarily calculated by an analytic model that also takes into account other factors, such as the actual charge-offs for the preceding reporting periods, expected charge-offs and recoveries for the subsequent reporting periods, a review of past due accounts receivable balances, changes in payment patterns, known fraudulent activity in the portfolio, as well as leading economic and market indicators. The following table presents changes in the accounts receivable allowances: Nine Months Ended September 30, (In thousands) 2019 2018 Balance, beginning of year $ 46,948 $ 33,387 Provision for credit losses 47,470 50,411 Other 1 18,382 14,408 Charge-offs (69,864 ) (58,532 ) Recoveries of amounts previously charged-off 7,149 5,439 Currency translation (820 ) (349 ) Balance, end of period $ 49,265 $ 44,764 1

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings per Share	6. Earnings per Share Basic earnings per share is computed by dividing net income attributable to shareholders by the weighted average number of shares of common stock and vested deferred stock units (“DSUs”) outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested performance-based awards for which the performance condition has been met as of the date of determination using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options and the average unrecognized compensation expense for unvested share-based compensation awards, would be used to purchase the Company’s common stock at the average market price during the period. The following table summarizes net income attributable to shareholders and reconciles basic and diluted shares outstanding used in the earnings per share computations: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2019 2018 2019 2018 Net income attributable to shareholders $ 14,619 $ 56,644 $ 44,560 $ 147,038 Weighted average common shares outstanding – Basic 43,349 43,191 43,300 43,141 Dilutive impact of share-based compensation awards 462 424 415 417 Weighted average common shares outstanding – Diluted 43,811 43,615 43,715 43,558 For the three and nine months ended September 30, 2019 and 2018

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	7. Derivative Instruments The Company is exposed to certain market risks relating to its ongoing business operations. From time to time, the Company enters into derivative instrument arrangements to manage various risks including interest rate risk. As of December 31, 2018, we had four interest rate swap contracts in effect with a collective notional amount at inception of $1.0 billion , with maturity dates from December 30, 2020 to December 31, 2022, at interest rates between 1.108 percent and 2.212 percent . On March 12, 2019, the Company entered into three additional interest rate swap contracts. The following table presents relevant information for the interest rate swap agreements entered into during the nine months ended September 30, 2019 : Tranche A Tranche B Tranche C Notional amount at inception (in thousands) $150,000 $100,000 $200,000 Maturity date 3/12/2022 3/12/2022 3/12/2023 Fixed interest rate 2.41750% 2.42500% 2.41325% As of September 30, 2019 , outstanding interest rate swap contracts are intended to fix the future interest payments associated with $1.4 billion of the $2.4 billion of outstanding borrowings under our 2016 Credit Agreement. The following table presents information on the location and amounts of interest rate swap gains and losses: (In thousands) Three Months Ended September 30, Nine Months Ended September 30, Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Statement 2019 2018 2019 2018 Interest rate swap agreements – unrealized portion Net unrealized (loss) gain on financial instruments $ (5,834 ) $ 2,340 $ (39,903 ) $ 19,792 Interest rate swap agreements – realized portion Financing interest income $ 1,355 $ 1,866 $ 5,613 $ 3,542 See Note 11, Fair Value,

Deposits

Deposits	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Deposits	8. Deposits WEX Bank’s regulatory status enables it to raise capital to fund the Company’s working capital requirements by issuing deposits, subject to FDIC rules governing minimum financial ratios. See Note 19, Supplementary Regulatory Capital Disclosure, for further information concerning these FDIC requirements. WEX Bank accepts its deposits through: (i) certain customers as required collateral for credit that has been extended (“customer deposits”); (ii) contractual arrangements with brokerage firms for both certificate of deposit and money market deposit products (“brokered deposits”); and (iii) a listing service that provides certificates of deposit with financial institutions (“institutional deposits”). Customer deposits are generally non-interest bearing, while brokered deposits are issued at variable rates based on LIBOR or the Federal Funds rate and institutional deposits contain varying terms. The following table presents the composition of deposits, which are classified based on their contractual maturities: (In thousands) September 30, 2019 December 31, 2018 Interest-bearing brokered money market deposits (a) $ 275,970 $ 283,790 Customer deposits 121,849 138,072 Certificates of deposit with maturities within 1 year (a)(b) 760,824 505,582 Short-term deposits 1,158,643 927,444 Certificates of deposit with maturities greater than 1 year and less than 5 years (a)(b) 416,295 345,231 Total deposits $ 1,574,938 $ 1,272,675 Weighted average cost of funds on certificates of deposit outstanding 2.40 % 2.36 % Weighted average cost of interest-bearing brokered money market deposits 2.19 % 2.49 % (a) As of September 30, 2019 , all brokered deposits were in denominations of $250 thousand or less, corresponding to FDIC deposit insurance limits. (b) Original maturities range from 2 months to 5 years , with interest rates ranging from 1.70 percent to 3.52 percent as of September 30, 2019 . At December 31, 2018 , original maturities ranged from 6 months to 5 years with interest rates ranging from 1.30 percent to 3.52 percent . In accordance with regulatory requirements, WEX Bank maintains reserves against a portion of its outstanding customer deposits by keeping balances with the Federal Reserve Bank. The required reserve was $12.5 million and $11.1 million at September 30, 2019 and December 31, 2018 , respectively. ICS Purchases From time to time, WEX Bank utilizes alternative funding sources such as Promontory Interfinancial Network, LLC’s ICS service, which provides for one-way buy transactions among banks for the purposes of purchasing cost-effective variable-rate funding without collateralization. WEX Bank may purchase brokered money market demand accounts and demand deposit accounts in amounts not to exceed $125.0 million through this service. There were no outstanding balances for ICS purchases at September 30, 2019 and December 31, 2018

Financing and Other Debt

Financing and Other Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Financing and Other Debt	9. Financing and Other Debt The following table summarizes the Company’s total outstanding debt by type: (In thousands) September 30, 2019 December 31, 2018 Tranche A term loan 936,190 423,637 Tranche B term loan 1,460,718 1,321,447 Term loans under 2016 Credit Agreement (a) 2,396,908 1,745,084 Notes outstanding (a) 400,000 400,000 Securitized debt 94,921 106,872 Participation debt 44,265 114,849 WEX Latin America debt 817 16,242 Total gross debt $ 2,936,911 $ 2,383,047 (a) See Note 11, Fair Value, for more information regarding the Company’s 2016 Credit Agreement and Notes. The following table summarizes the Company’s total outstanding debt by balance sheet classification: (In thousands) September 30, 2019 December 31, 2018 Current portion of gross debt $ 204,613 $ 223,241 Less: Unamortized debt issuance costs (8,027 ) (6,724 ) Short-term debt, net $ 196,586 $ 216,517 Long-term portion of gross debt $ 2,732,298 $ 2,159,806 Less: Unamortized debt issuance costs (31,649 ) (25,883 ) Long-term debt, net $ 2,700,649 $ 2,133,923 Supplemental information under 2016 Credit Agreement: Letters of credit (b) $ 51,310 $ 53,514 Remaining borrowing capacity on revolving credit facility (c) $ 718,690 $ 666,486 (b) Collateral for lease agreements, virtual card and fuel payment processing activity at the Company’s foreign subsidiaries. (c) Contingent on maintaining compliance with the financial covenants as defined in the Company’s 2016 Credit Agreement. 2016 Credit Agreement As of December 31, 2018, the 2016 Credit Agreement, provided for a secured tranche A term loan in an original principal amount of $480.0 million , a secured tranche B term loan in an original principal amount of $1,335.0 million and a $720.0 million secured revolving credit facility, with a $250.0 million sublimit for letters of credit and $20.0 million sublimit for swingline loans. Under the 2016 Credit Agreement, the Company has granted a security interest in substantially all of the assets of the Company, subject to exceptions including the assets of WEX Bank and certain foreign subsidiaries. On January 18, 2019, the Company entered into a Fifth Amendment to the 2016 Credit Agreement, which provided additional tranche A term loans in the original principal amount of $300 million . In addition, subject to certain conditions, the Fifth Amendment provided delayed draw commitments for an incremental $275.0 million tranche A term loan and an incremental $25.0 million of revolving credit commitments (subject to conversion of the delayed draw incremental tranche A term loan commitments and incremental revolving credit commitments to commitments of the other type). On March 5, 2019, the Company drew down this commitment in order to fund the acquisition of Discovery Benefits, consisting of $250.0 million of tranche A term loans and an incremental $50.0 million of revolving credit commitments. On May 17, 2019, the Company entered into a Sixth Amendment to the 2016 Credit Agreement, which provided additional tranche B term loans in the original principal amount of $150.0 million and extended the maturity date of tranche B term loans by three years to May 2026. Amounts due under the revolving credit facility and tranche A term loans of the 2016 Credit Agreement mature in July 2023. Prior to maturity, amounts borrowed under the tranche A and tranche B term loan facilities will be reduced by mandatory quarterly payments of $12.5 million and $3.7 million , respectively. The revolving loans and tranche A term loans outstanding under the 2016 Credit Agreement bear interest at variable rates, at the Company’s option, plus an applicable margin determined based on the Company’s consolidated leverage ratio. The tranche B term loans bear interest at a variable rate plus a margin equal to 2.25 percent for base rate loans and 1.25 percent for eurocurrency rate loans. As of September 30, 2019 and December 31, 2018, amounts outstanding under the 2016 Credit Agreement bore a weighted average effective interest rate of 4.2 percent and 4.7 percent , respectively. The Company maintains interest rate swap agreements to manage the interest rate risk associated with its outstanding variable-interest rate borrowings under the 2016 Credit Agreement. See Note 7, Derivative Instruments, for further discussion. The Company accounted for the January 2019 amendment to the 2016 Credit Agreement as a debt modification. The Company accounted for the May 2019 amendment to the 2016 Credit Agreement as both a debt modification and extinguishment, and consequently recorded a loss on extinguishment of debt of $1.3 million related to the write-off of unamortized debt issuance costs during the nine months ended September 30, 2019 . During the nine months ended September 30, 2019 , the Company incurred and expensed $10.6 million of third party costs associated with the January and May 2019 debt amendments, which are classified within general and administrative expenses in our unaudited condensed consolidated statements of income. During the nine months ended September 30, 2019 , the Company incurred and capitalized lender costs of $3.4 million associated with the January 2019 debt amendment and a debt discount of $11.0 million associated with the May 2019 debt amendment. These costs are being amortized into interest expense over the 2016 Credit Agreement’s term using the effective interest method. Debt Covenants As more fully described in the Company’s Annual Report on Form 10 – K for the year ended December 31, 2018, the 2016 Credit Agreement and the Indenture contain covenants that limit the ability of the Company and its subsidiaries, including its restricted subsidiaries and, in certain limited circumstances, WEX Bank and the Company’s other regulated subsidiaries, to (i) incur additional debt, (ii) pay dividends or make other distributions on, redeem or repurchase capital stock, or make investments or other restricted payments, (iii) enter into transactions with affiliates, (iv) dispose of assets or issue stock of restricted subsidiaries or regulated subsidiaries, (v) create liens on assets, or (vi) effect a consolidation or merger or sell all, or substantially all, of the Company’s assets. As of September 30, 2019 , the Company was in compliance with all material covenants of its 2016 Credit Agreement and the Indenture. Notes Outstanding As of both September 30, 2019 and December 31, 2018 , the Company had $400.0 million of 4.75 percent fixed-rate senior notes outstanding, which will mature on February 1, 2023. Interest is payable semiannually in arrears on February 1 and August 1 of each year. Australian Securitization Facility The Company maintains a securitized debt agreement with the Bank of Tokyo-Mitsubishi UFJ, Ltd., which has been extended through April 2020. Under the terms of the agreement, each month, on a revolving basis, the Company sells certain of its Australian receivables to the Company’s Australian Securitization Subsidiary. The Australian Securitization Subsidiary, in turn, uses the receivables as collateral to issue asset-backed commercial paper (“securitized debt”) for approximately 85 percent of the securitized receivables. The amount collected on the securitized receivables is restricted to pay the securitized debt and is not available for general corporate purposes. The Company pays a variable interest rate on the outstanding balance of the securitized debt, based on the Australian Bank Bill Rate plus an applicable margin. The interest rate was 1.98 percent and 2.89 percent as of September 30, 2019 and December 31, 2018 , respectively. The Company had $73.4 million and $87.0 million of securitized debt under this facility as of September 30, 2019 and December 31, 2018 , respectively. European Securitization Facility On April 7, 2016, the Company entered into a five year securitized debt agreement with the Bank of Tokyo-Mitsubishi UFJ, Ltd. Under the terms of the agreement, the Company sells certain of its receivables from selected European countries to its European Securitization Subsidiary. The European Securitization Subsidiary, in turn, uses the receivables as collateral to issue securitized debt. The amount collected on the securitized receivables is restricted to pay the securitized debt and is not available for general corporate purposes. The amounts of receivables to be securitized under this agreement is determined by management on a monthly basis. The interest rate was 1.06 percent and 0.98 percent as of September 30, 2019 and December 31, 2018 , respectively. The Company had $21.5 million and $18.0 million of securitized debt under this facility as of September 30, 2019 and December 31, 2018 , respectively. Participation Debt From time to time, WEX Bank enters into participation agreements with third-party banks to fund customers’ balances that exceed WEX Bank’s lending limit to individual customers. Associated unsecured borrowings carry a variable interest rate of 1 month to 3 month LIBOR plus a margin of 225 basis points. The following table provides the amounts outstanding under the participation debt agreements in place: September 30, 2019 December 31, 2018 (In thousands) Amounts Available Amounts Outstanding Remaining Funding Capacity Amounts Available Amounts Outstanding Remaining Funding Capacity Short-term debt, net (a) $ 180,000 $ 44,265 $ 135,735 $ 130,000 $ 64,849 $ 65,151 Long-term debt, net (a) — — — 50,000 50,000 — $ 180,000 $ 44,265 $ 135,735 $ 180,000 $ 114,849 $ 65,151 Average interest rate 4.47 % 4.30 % (a) Amounts outstanding under agreements terminating on December 27, 2019 and August 31, 2020. Borrowed Federal Funds WEX Bank borrows from uncommitted federal funds lines to supplement the financing of the Company’s accounts receivable. Our federal funds lines of credit were $334.0 million and $309.0 million as of September 30, 2019 and December 31, 2018 , respectively. There were no outstanding borrowings as of September 30, 2019 and December 31, 2018 . WEX Latin America Debt WEX Latin America had debt of approximately $0.8 million and $16.2 million as of September 30, 2019 and December 31, 2018 , respectively. This is comprised of credit facilities and loan arrangements related to our accounts receivable. These borrowings are recorded in short-term debt. As of September 30, 2019 and December 31, 2018 , the interest rate was 27.62 percent and 23.59 percent

Off-Balance Sheet Arrangements

Off-Balance Sheet Arrangements	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Off-Balance Sheet Arrangements	10. Off–Balance Sheet Arrangements WEX Europe Services Accounts Receivable Factoring During the first quarter of 2017, WEX Europe Services entered into a factoring arrangement with an unrelated third-party financial institution. Under this arrangement, customer accounts receivable balances are sold without recourse to the extent that they are maintained at or below the credit limit established by the buyer. If customer receivable balances exceed the buyer’s credit limit, the Company maintains the risk of default. The Company obtained a true-sale opinion from an independent attorney, which states that the factoring agreement provides legal isolation upon WEX Europe Services bankruptcy or receivership under local law and creates a sale of receivables for amounts transferred both below and above the established credit limits. Additionally, there are no indications of the Company’s continuing involvement in the factored receivables. As such, transfers under this arrangement are treated as sales and are accounted for as reductions in trade accounts receivable because effective control of the receivables is transferred to the buyer. The Company sold approximately $156.0 million and $470.3 million of accounts receivable under this arrangement during the three and nine months ended September 30, 2019 , respectively. For the three and nine months ended September 30, 2018 the Company sold approximately $171.2 million and $532.1 million of accounts receivable, respectively. Proceeds received, which are recorded net of applicable costs, including interest and commissions, are recorded in operating activities in the statements of cash flows. The loss on factoring was $0.8 million and $2.6 million for the three and nine months ended September 30, 2019 , respectively, and $1.1 million and $3.5 million for the three and nine months ended September 30, 2018 , respectively, and was recorded within cost of services. As of September 30, 2019 and December 31, 2018 , the amount of outstanding transferred receivables in excess of the established credit limit was $0.4 million and $0.2 million , respectively. Charge-backs on balances in excess of the credit limit during the nine months ended September 30, 2019 and September 30, 2018 were insignificant. WEX Bank Accounts Receivable Factoring In August 2018, WEX Bank entered into a factoring agreement with an unrelated third-party financial institution to sell certain of our trade accounts receivable under non-recourse transactions. The Company obtained a true-sale opinion from an independent attorney, which states that the factoring agreement provides legal isolation upon WEX Bank bankruptcy or receivership under local law. WEX Bank continues to service the receivables post-transfer with no participating interest. As such, transfers under this arrangement are treated as a sale and are accounted for as a reduction in trade accounts receivable because effective control of the receivables is transferred to the buyer. The Company sold approximately $5.0 billion and $11.0 billion of accounts receivable under this arrangement during the three and nine months ended September 30, 2019 , respectively. For both the three and nine months ended September 30, 2018 , the Company sold approximately $1.3 billion of accounts receivable. Proceeds received, which are reported net of a negotiated discount rate, are recorded in operating activities in the statements of cash flows. The loss on factoring, which is recorded within cost of services, was $1.2 million and $2.9 million for the three and nine months ended September 30, 2019 , respectively, and $0.4 million for both the three and nine months ended September 30, 2018 . WEX Latin America Securitization of Receivables During the second quarter of 2017, WEX Latin America entered into a securitized debt agreement to transfer certain unsecured receivables associated with our salary payment card product to an investment fund managed by an unrelated third-party financial institution. WEX Latin America holds a non-controlling equity interest in the investment fund. During the nine months ended September 30, 2019 , the Company did not make equity contributions to the investment fund. As of December 31, 2017 and through June 30, 2018, this securitization arrangement did not meet the derecognition conditions due to continuing involvement with the transferred assets and accordingly WEX Latin America reported the transferred receivables and securitized debt on our balance sheet. During the nine months ended September 30, 2018, the Company recognized operating interest expense of $4.4 million under this financing arrangement. During the third quarter of 2018, the securitization agreements were amended, resulting in the Company giving effective control of the transferred receivables to the buyer. The Company received a true-sale opinion from an independent attorney stating that the amended agreements provide legal isolation upon WEX Latin America bankruptcy or receivership under local law. As such, transfers under this arrangement are treated as sales and are accounted for as reductions in trade accounts receivable. During the three and nine months ended September 30, 2019 , the Company sold $21.4 million and $57.0 million of receivables, respectively, and recognized a gain on sale of $4.8 million and $12.0 million , respectively. For both the three and nine months ended September 30, 2018 , the Company sold $20.2 million of receivables and recognized a gain on sale of $3.2 million . The gain recognized consists of the difference between the sales price and the carrying value of the receivables and is recorded within other revenue. Cash proceeds from the transfer of these receivables are recorded in operating activities in the statements of cash flows.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value	11. Fair Value Certain of the Company’s financial assets and liabilities are recorded at fair value. The Company determines fair value based upon quoted prices when available or through the use of alternative approaches, such as model pricing, when market quotes are not readily accessible or available. These valuation techniques may be based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs create the following fair value hierarchy: • Level 1 – Quoted prices for identical instruments in active markets. • Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. • Level 3 – Instruments whose significant value drivers are unobservable. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents the Company’s financial instruments that are measured at fair value: (In thousands) Fair Value Hierarchy September 30, 2019 December 31, 2018 Financial Assets: Money market funds (a) 1 $ 76,004 $ 71,228 Investment securities Municipal bonds 2 $ 309 $ 404 Asset-backed securities 2 255 279 Mortgage-backed securities 2 177 260 Equity security measured at net asset value NAV 5,000 — Fixed-income mutual fund 1 24,717 23,463 Total investment securities $ 30,458 $ 24,406 Executive deferred compensation plan trust (b) 1 $ 7,661 $ 6,398 Interest rate swaps (c) 2 $ 2,891 $ 17,994 Liabilities Interest rate swaps (d) 2 $ 24,800 $ — (a) The fair value is recorded in cash and cash equivalents. (b) The fair value is recorded in prepaid expenses and other current assets and other assets based on the timing of payment obligations. (c) The fair value is recorded in prepaid expenses and other current assets or other assets depending on the timing of expected discounted cash flows. (d) The fair value is recorded in other current liabilities or other liabilities depending on the timing of expected discounted cash flows. Money Market Funds A portion of the Company’s cash and cash equivalents are invested in a money market fund that primarily consists of short-term government securities, which are classified as Level 1 in the fair value hierarchy because they are valued using quoted market prices in an active market. Investment Securities When available, the Company uses quoted market prices to determine the fair value of investment securities; such inputs are classified as Level 1 of the fair-value hierarchy. These securities primarily consist of an open-ended mutual fund, which is invested in fixed-income securities and is held in order to satisfy the regulatory requirements of WEX Bank. For mortgage-backed and asset-backed debt securities and municipal bonds, the Company generally uses quoted prices for recent trading activity of assets with similar characteristics to the debt security or bond being valued. The securities and bonds priced using such methods are generally valued using Level 2 inputs. Executive Deferred Compensation Plan Trust The investments held in the executive deferred compensation plan trust are classified as Level 1 in the fair value hierarchy because the fair value is determined using quoted prices for identical instruments in active markets. Interest Rate Swaps The Company determines the fair value of its interest rate swaps based on the discounted cash flows of the difference between the projected fixed payments on the swaps and the implied floating payments using the current LIBOR curve, which are Level 2 inputs of the fair value hierarchy. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Notes Outstanding The Notes outstanding had a fair value of $405.0 million and $392.0 million as of September 30, 2019 and December 31, 2018 , respectively. The fair value of the Notes is based on market rates for the issuance of our debt and is classified as Level 2 in the fair value hierarchy. 2016 Credit Agreement The Company determines the fair value of the amount outstanding under its 2016 Credit Agreement based on the market rates for the issuance of the Company’s debt, which are Level 2 inputs in the fair value hierarchy. As of both September 30, 2019 and December 31, 2018 , the carrying value of the 2016 Credit Agreement approximated its fair value. Other Assets and Liabilities

Redeemable Non-Controlling Inte

Redeemable Non-Controlling Interest	9 Months Ended
	Sep. 30, 2019
Noncontrolling Interest [Abstract]
Redeemable Non-Controlling Interest	12. Redeemable Non-Controlling Interest On March 5, 2019, the Company acquired Discovery Benefits, an employee benefits administrator. The seller of Discovery Benefits obtained a 4.9 percent equity interest in the newly formed parent company of WEX Health and Discovery Benefits (“the U.S. Health business”). The seller’s 4.9 percent non-controlling interest in WEX Health and DBI was initially established at carrying value and fair value, respectively. On the date of acquisition, the excess of the fair value of the 4.9 percent equity interest in WEX Health over its carrying value was recognized as an equity transaction, resulting in a $41.4 million increase to additional paid-in capital. The agreement provides the seller with a put right and the Company with a call right for the equity interest, which can be exercised no earlier than five and seven years following the date of acquisition, respectively. Upon exercise of the put or call right, the purchase price is calculated based on a revenue multiple of peer companies (as defined in the acquisition agreement) applied to trailing twelve month revenues of the U.S. Health business. The put option makes the non-controlling interest redeemable and, therefore, the non-controlling interest is classified as temporary equity outside of stockholders’ equity. The redeemable non-controlling interest is reported at the higher of its redemption value or the non-controlling interest holder’s proportionate share of the U.S. Health business’ net carrying value. Subsequent remeasurement of the equity interest to fair value during the first quarter of 2019 resulted in an increase to redeemable non-controlling interest of $41.4 million and an offsetting decrease to retained earnings that did not impact earnings per share. During the nine months ended September 30, 2019 , we recalculated the redeemable non-controlling interest using revenue multiples as defined by the acquisition agreement and described above, resulting in a $46.2 million increase to the redeemable non-controlling interest. The adjustment reduced both retained earnings and earnings per share attributable to shareholders for the nine months ended September 30, 2019 . Subsequent increases or decreases in the redemption value of the non-controlling interest will be offset against retained earnings and impact earnings per share. The following table presents the changes in the Company’s redeemable non-controlling interest: (In thousands) Nine Months Ended September 30, 2019 Balance, beginning of period $ — Acquisition of Discovery Benefits at fair value 25,757 Establishing redeemable non-controlling interest for WEX Health at carrying value 32,843 Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value 41,400 Net income attributable to redeemable non-controlling interest 39 Accretion of non-controlling interest 46,179 Balance, end of period $ 146,218

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes The Company’s effective tax rate was 31.1 percent and 29.2 percent for the three and nine months ended September 30, 2019 , respectively, as compared to 27.3 percent and 25.8 percent for the three and nine months ended September 30, 2018 , respectively. The increase in our tax rate was primarily due to the jurisdictional earnings mix and increase in the estimated valuation allowance related to the state net operating losses for the Company’s separate state filings. While our accounting for the impact of the 2017 Tax Cut and Jobs Act as of December 31, 2018 was deemed to be complete, amounts recorded were based on prevailing regulations and available information as of December 31, 2018. Additional guidance issued by the Internal Revenue Service may continue to impact our recorded amounts after December 31, 2018. Undistributed earnings of certain foreign subsidiaries of the Company amounted to $76.8 million and $64.9 million at September 30, 2019 and December 31, 2018 , respectively. These earnings and profits are considered to be indefinitely reinvested. Upon distribution of these earnings in the form of dividends or otherwise, the Company would be subject to withholding taxes payable, where applicable, to foreign countries, but would have no further federal income tax liability.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	14. Leases We have operating leases for buildings, primarily for office space. For building leases with terms greater than twelve months, we account for lease and non-lease components as a single lease component. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Short-term lease payments are recognized on a straight-line basis and variable short-term lease payments are recognized in the period in which the obligation is incurred. We determine whether or not a contract contains a lease at inception of the contract. Many of our lease agreements contain renewal or termination clauses that we factor into our determination of the lease term if we are reasonably certain to exercise any such options. The following table presents supplemental balance sheet information related to our leases: (In thousands) Balance Sheet Location September 30, 2019 Assets Operating lease ROU assets Other assets $ 69,617 Liabilities Current operating lease liabilities Other current liabilities 12,469 Non-current operating lease liabilities Other liabilities 69,567 Total lease liabilities $ 82,036 The following table presents the weighted average remaining lease term and discount rate: Operating leases September 30, 2019 Weighted average remaining term (in years) 8.8 Weighted average discount rate 4.6 % The following table presents the maturities of our lease liabilities: (In thousands) September 30, 2019 Remaining 2019 $ 3,958 2020 15,501 2021 14,726 2022 12,888 2023 9,225 2024 and thereafter 44,264 Total lease payments $ 100,562 Less: Imputed interest 18,526 Total lease obligations $ 82,036 Less: Current portion of lease obligations 12,469 Long-term lease obligations $ 69,567 In addition to the total lease obligations presented in the table above, we have a 14 year building operating lease with undiscounted payment obligations of $30.0 million that is expected to commence during 2020. We recognized $4.1 million and $13.1 million of operating lease expense during the three and nine months ended September 30, 2019 , respectively, which includes immaterial short-term leases and variable lease costs. These amounts are classified as general and administrative expense on our statements of income. The following table presents supplemental cash flow and other information related to our leases: (In thousands) Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 12,234 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 8,388

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. Commitments and Contingencies Litigation The Company is subject to legal proceedings and claims in the ordinary course of business. As of the date of this filing, the current estimate of a reasonably possible loss contingency from all legal proceedings is not material to the Company’s consolidated financial position, results of operations, cash flows or liquidity. Commitments Significant commitments and contingencies as of September 30, 2019 are consistent with those discussed in Note 19, Commitments and Contingencies, to the consolidated financial statements in the Annual Report on Form 10–K for the year ended December 31, 2018 .

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	16. Stock–Based Compensation The Company regularly grants equity awards under its stockholder-approved equity plans to certain employees and directors. The fair value of equity awards granted during the nine months ended September 30, 2019 and 2018 totaled $55.0 million and $34.8 million , respectively. The fair value of restricted stock units, deferred stock units and performance based restricted stock units is based on the closing market price of the Company’s stock on the grant date as reported by the NYSE. The fair value of each service-based stock option award is estimated on the grant date using a Black-Scholes-Merton option-pricing model. The table below presents the weighted average fair value of service-based stock options by year of grant and the assumptions used in estimating those fair values: 2019 2018 Weighted average grant date fair value $ 58.28 $ 51.27 Weighted average expected life (in years) 6.0 6.0 Weighted average exercise price $ 184.81 $ 158.23 Expected stock price volatility 27.21 % 27.35 % Risk-free interest rate 2.37 % 2.69 %

Restructuring Activities

Restructuring Activities	9 Months Ended
	Sep. 30, 2019
Restructuring and Related Activities [Abstract]
Restructuring Activities	17. Restructuring Activities In the first quarter of 2015, the Company commenced a restructuring initiative as a result of its global review of operations. The Company identified certain initiatives to further streamline the business, improve efficiency and globalize operations, all with an objective to improve scale and increase profitability. The Company continued its efforts to improve overall operational efficiency and began a second restructuring initiative during the second quarter of 2016. In connection with the Electronic Funds Source, LLC acquisition, the Company initiated a third restructuring program in the third quarter of 2016. Total restructuring charges incurred to date under these initiatives, which primarily consisted of employee costs and office closure costs, were $27.1 million as of September 30, 2019 . During the nine months ended September 30, 2019, the Company continued its strategic shift related to its global restructuring initiatives, resulting in $2.3 million of charges related to severance. Restructuring charges were immaterial for the nine months ended September 30, 2018. Based on current plans, which are subject to change, the Company does not expect to incur any material charges under these initiatives in future periods.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Information	18. Segment Information The Company determines its operating segments and reports information in accordance with how the Company’s chief operating decision maker (“CODM”) allocates resources and assesses performance. The Company’s CODM is its Chief Executive Officer. The operating segments are aggregated into the three reportable segments described below. • Fleet Solutions primarily provides customers with payment and transaction processing services specifically designed for the needs of commercial and government fleets. This segment also provides information management services to these fleet customers. • Travel and Corporate Solutions focuses on the complex payment environment of business-to-business payments, providing customers with payment processing solutions for their corporate payment and transaction monitoring needs. • Health and Employee Benefit Solutions provides healthcare payment products and SaaS consumer directed platforms, as well as payroll related benefits to customers. The following tables present the Company’s reportable segment revenues: Three Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Revenues Payment processing revenue $ 125,288 $ 85,128 $ 14,340 $ 224,756 Account servicing revenue 42,037 10,717 56,451 109,205 Finance fee revenue 65,818 645 (81 ) 66,382 Other revenue 44,383 2,638 12,599 59,620 Total revenues $ 277,526 $ 99,128 $ 83,309 $ 459,963 Interest income $ 825 $ 402 $ 449 $ 1,676 Three Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Revenues Payment processing revenue $ 116,023 $ 54,345 $ 12,503 $ 182,871 Account servicing revenue 42,810 9,120 26,818 78,748 Finance fee revenue 51,644 670 5,359 57,673 Other revenue 39,092 18,675 9,558 67,325 Total revenues $ 249,569 $ 82,810 $ 54,238 $ 386,617 Interest income $ 1,092 $ 172 $ 4,513 $ 5,777 Nine Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Total Revenues Payment processing revenue $ 353,413 $ 222,399 $ 50,568 $ 626,380 Account servicing revenue 122,782 32,019 148,382 303,183 Finance fee revenue 174,067 1,498 102 175,667 Other revenue 127,360 16,210 34,846 178,416 Total revenues $ 777,622 $ 272,126 $ 233,898 $ 1,283,646 Interest income $ 4,844 $ 1,209 $ 1,036 $ 7,089 Nine Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Total Revenues Payment processing revenue $ 335,896 $ 150,411 $ 43,756 $ 530,063 Account servicing revenue 128,039 27,584 80,545 236,168 Finance fee revenue 140,436 1,157 16,514 158,107 Other revenue 116,975 46,201 23,929 187,105 Total revenues $ 721,346 $ 225,353 $ 164,744 $ 1,111,443 Interest income $ 3,127 $ 715 $ 14,847 $ 18,689 The CODM evaluates the financial performance of each segment using segment adjusted operating income, which excludes: (i) acquisition and divestiture related items (including acquisition-related intangible amortization); (ii) debt restructuring costs; (iii) stock-based compensation; (iv) restructuring and other costs; (v) certain impairment charges and (vi) unallocated corporate expenses. Additionally, we do not allocate foreign currency gains and losses, financing interest expense, unrealized and realized gains and losses on financial instruments, income taxes and adjustments attributable to non-controlling interests to our operating segments. The following table reconciles segment adjusted operating income to income before income taxes: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2019 2018 2019 2018 Segment adjusted operating income Fleet Solutions $ 133,348 $ 112,952 $ 348,900 $ 333,878 Travel and Corporate Solutions 47,356 39,377 122,581 99,074 Health and Employee Benefit Solutions 21,427 13,137 62,353 42,816 Total segment adjusted operating income $ 202,131 $ 165,466 $ 533,834 $ 475,768 Reconciliation: Total segment adjusted operating income $ 202,131 $ 165,466 $ 533,834 $ 475,768 Less: Unallocated corporate expenses 17,016 13,414 52,135 42,378 Acquisition-related intangible amortization 42,800 33,439 116,502 103,596 Other acquisition and divestiture related items 7,907 1,536 24,704 2,792 Debt restructuring costs 1,162 317 10,640 3,798 Stock-based compensation 9,522 9,799 34,956 25,659 Restructuring and other costs 5,413 1,973 12,914 8,274 Impairment charge — 2,424 — 2,424 Operating income 118,311 102,564 281,983 286,847 Financing interest expense (34,549 ) (25,718 ) (101,299 ) (78,560 ) Net foreign currency loss (16,528 ) (1,094 ) (13,748 ) (27,438 ) Net unrealized (loss) gain on financial instruments (5,650 ) 2,157 (39,078 ) 18,371 Income before income taxes $ 61,584 $ 77,909 $ 127,858 $ 199,220

Supplementary Regulatory Capita

Supplementary Regulatory Capital Disclosure	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Supplementary Regulatory Capital Disclosure	19. Supplementary Regulatory Capital Disclosure The Company’s subsidiary, WEX Bank, is subject to various regulatory capital requirements administered by the FDIC and the Utah Department of Financial Institutions. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, WEX Bank must meet specific capital guidelines that involve quantitative measures of WEX Bank’s assets, liabilities and certain off-balance sheet items. WEX Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Failure to meet minimum capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators that, if undertaken, could limit our business activities and have a material effect on our business, results of operations and financial condition. Quantitative measures established by regulation to ensure capital adequacy require WEX Bank to maintain minimum amounts and ratios as defined in the regulations. As of September 30, 2019 , the most recent FDIC exam report categorized WEX Bank as “well capitalized” under the regulatory framework for prompt corrective action. There are no conditions or events subsequent to that examination report that management believes have changed WEX Bank’s capital rating. The following table presents WEX Bank’s actual and regulatory minimum capital amounts and ratios: (In thousands) Actual Amount Ratio Minimum for Capital Adequacy Purposes Amount Ratio Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio September 30, 2019 Total Capital to risk-weighted assets $ 361,900 12.71 % $ 227,829 8.0 % $ 284,786 10.0 % Tier 1 Capital to average assets $ 346,875 11.13 % $ 124,630 4.0 % $ 155,787 5.0 % Common equity to risk-weighted assets $ 346,875 12.18 % $ 128,154 4.5 % $ 185,111 6.5 % Tier 1 Capital to risk-weighted assets $ 346,875 12.18 % $ 170,872 6.0 % $ 227,829 8.0 % December 31, 2018 Total Capital to risk-weighted assets $ 323,178 12.82 % $ 201,749 8.0 % $ 252,186 10.0 % Tier 1 Capital to average assets $ 305,734 10.88 % $ 112,401 4.0 % $ 140,501 5.0 % Common equity to risk-weighted assets $ 305,734 12.12 % $ 113,484 4.5 % $ 163,921 6.5 % Tier 1 Capital to risk-weighted assets $ 305,734 12.12 % $ 151,312 6.0 % $ 201,749 8.0 %

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10–Q and Rule 10–01 of Regulation S–X. Accordingly, they do not include all information and notes required by GAAP for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the financial statements that are included in the Company’s Annual Report on Form 10–K for the year ended December 31, 2018 , filed with the SEC on March 18, 2019 and our Form 10–K/A filed with the SEC on March 20, 2019. In the opinion of management, all adjustments, including normal recurring accruals, considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results for any future periods or the year ending December 31, 2019 . In August 2018, the SEC issued an amendment to Rule 3–04 of Regulation S–X requiring both year-to-date information and subtotals for each interim period. We have elected to expand our analysis of changes in stockholders’ equity as of September 30, 2019 in statement form for each of the current and comparative quarter-to-date and year-to-date periods. Effective in the first quarter of 2019, the Company modified the presentation of the unaudited condensed consolidated balance sheets to separately classify its restricted cash payable. The prior period has been reclassified to conform with this presentation, which did not result in a change to current liabilities. We apply the same accounting policies in preparing our quarterly and annual financial statements, with the exception of the new leasing standard, which was required to be adopted January 1, 2019 (refer to Note 2, Recent Accounting Pronouncements ). The Company rounds amounts in the unaudited condensed consolidated financial statements to thousands and calculates all per-share data from underlying whole-dollar amounts. Thus, certain amounts may not foot, crossfoot or recalculate based on reported numbers due to rounding.
New Accounting Standards	Standard Description Date/Method of Adoption Effect on financial statements or other significant matters Adopted During the Nine Months Ended September 30, 2019 ASU 2016–02 This standard requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The Company adopted ASU 2016–02 effective January 1, 2019, using the modified retrospective approach and all practical expedients permitted under the transition guidance. In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016–02, Leases (Topic 842), which requires leases with a duration greater than twelve months to be recognized on the balance sheet as right-of-use (“ROU”) assets and lease liabilities. We adopted the new standard using the modified retrospective approach and have elected the package of practical expedients permitted under the transition guidance, but have not utilized the hindsight practical expedient for expired or existing contracts. Therefore, we carried forward our historical determination of (i) whether a contract is or contains a lease, (ii) lease classification and (iii) initial direct costs. Additionally, we elected the practical expedients, which allowed us to (i) not perform an allocation of lease and non-lease components for real estate leases, (ii) continue to account for short-term leases under Topic 840 and (iii) utilize our incremental borrowing rate (“IBR”), rather than the rate implicit in each lease, to calculate the present value of the remaining lease payments. As such, the unaudited condensed consolidated financial statements for the period ended September 30, 2019 are presented under the new standard, while comparative periods presented continue to be reported in accordance with Topic 840. The most significant impact of adoption was the recording of operating lease ROU assets and operating lease liabilities on our unaudited condensed consolidated balance sheets at January 1, 2019. Refer to Note 14, Leases, for more information. The standard did not materially impact our results of operations or cash flows. ASU 2018 – 15 This standard clarifies the accounting for capitalizing implementation costs in a cloud computing arrangement that is a service contract. The standard provides that implementation costs be treated using the same criteria used for internal-use software development costs, with amortization expense being recorded in the same income statement expense line as the hosted service costs and over the expected term of the hosting arrangement. Effective January 1, 2019, the Company early adopted ASU 2018–15 on a prospective basis. Under the standard, we now capitalize implementation costs related to our cloud migration of technology platforms to the cloud. Such amounts are amortized over the lesser of the term of the hosting arrangement, considering any explicit renewal options for which we are reasonably certain to exercise, or the useful life of the underlying hosted software. This standard did not materially impact our results of operations, cash flows or consolidated financial position. Not Yet Adopted as of September 30, 2019 ASU 2016 – 13 This standard requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that impact the collectability of the reported amount. The standard is effective January 1, 2020. The current expected credit loss model outlined in the ASU differs from existing US GAAP as it is based on expected rather than incurred losses. The standard requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. The Company has established a cross-functional task force charged with evaluating the requirements of the new standard, the availability and extent of historical data, relevant economic indicators and the impact this standard will have on our processes, systems and internal controls. We are currently in the process of gathering historical data, selecting our credit loss model, assessing system requirements and evaluating disclosure requirements. Though the Company continues to assess the impact of adoption, we currently believe the most significant effects of the ASU will be incorporating economic factors into our credit loss reserve methodologies and providing expanded disclosures on expected credit losses. At this time, the impact on credit loss reserves is not expected to be material.
Receivables	In general, the Company’s trade accounts receivable provide for payment terms of 30 days or less. Receivables not paid within the terms of the agreement are generally subject to late fees based upon the outstanding receivable balance.
Earnings per Share	Basic earnings per share is computed by dividing net income attributable to shareholders by the weighted average number of shares of common stock and vested deferred stock units (“DSUs”) outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested performance-based awards for which the performance condition has been met as of the date of determination using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options and the average unrecognized compensation expense for unvested share-based compensation awards, would be used to purchase the Company’s common stock at the average market price during the period.
Derivative Instruments	The Company is exposed to certain market risks relating to its ongoing business operations. From time to time, the Company enters into derivative instrument arrangements to manage various risks including interest rate risk
Fair Value of Financial Instruments	The fair value of the Notes is based on market rates for the issuance of our debt and is classified as Level 2 in the fair value hierarchy. 2016 Credit Agreement • Level 1 – Quoted prices for identical instruments in active markets. Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. • Level 3 – Instruments whose significant value drivers are unobservable. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Investment Securities When available, the Company uses quoted market prices to determine the fair value of investment securities; such inputs are classified as Level 1 of the fair-value hierarchy. These securities primarily consist of an open-ended mutual fund, which is invested in fixed-income securities and is held in order to satisfy the regulatory requirements of WEX Bank. For mortgage-backed and asset-backed debt securities and municipal bonds, the Company generally uses quoted prices for recent trading activity of assets with similar characteristics to the debt security or bond being valued. The securities and bonds priced using such methods are generally valued using Level 2 inputs.
Leases	We have operating leases for buildings, primarily for office space. For building leases with terms greater than twelve months, we account for lease and non-lease components as a single lease component. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Short-term lease payments are recognized on a straight-line basis and variable short-term lease payments are recognized in the period in which the obligation is incurred. We determine whether or not a contract contains a lease at inception of the contract. Many of our lease agreements contain renewal or termination clauses that we factor into our determination of the lease term if we are reasonably certain to exercise any such options.
Segment Information	The Company determines its operating segments and reports information in accordance with how the Company’s chief operating decision maker (“CODM”) allocates resources and assesses performance. The Company’s CODM is its Chief Executive Officer. The operating segments are aggregated into the three reportable segments described below. • Fleet Solutions primarily provides customers with payment and transaction processing services specifically designed for the needs of commercial and government fleets. This segment also provides information management services to these fleet customers. • Travel and Corporate Solutions focuses on the complex payment environment of business-to-business payments, providing customers with payment processing solutions for their corporate payment and transaction monitoring needs. • Health and Employee Benefit Solutions

Basis of Presentation (Tables)

Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	The effects of the Revision on our unaudited condensed consolidated statements of income and cash flows were as follows: Three Months Ended September 30, 2018 (In thousands, except per share data) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Total revenues $ 382,690 $ (614 ) $ 4,541 $ 386,617 Processing costs $ 79,580 $ 1,610 $ — $ 81,190 Provision for credit losses $ 21,435 $ 1,114 $ — $ 22,549 General and administrative $ 51,799 $ — $ (673 ) $ 51,126 Operating income $ 100,688 $ (3,338 ) $ 5,214 $ 102,564 Income taxes $ 18,751 $ (1,779 ) $ 4,333 $ 21,305 Net income $ 57,282 $ (1,559 ) $ 881 $ 56,604 Net income attributable to shareholders $ 57,322 $ (1,559 ) $ 881 $ 56,644 Net income attributable to shareholders per share Basic $ 1.33 $ (0.04 ) $ 0.02 $ 1.31 Diluted $ 1.31 $ (0.04 ) $ 0.02 $ 1.30 Nine Months Ended September 30, 2018 (In thousands, except per share data) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Total revenues $ 1,108,395 $ (2,675 ) $ 5,723 $ 1,111,443 Processing costs $ 235,508 $ (3,747 ) $ — $ 231,761 Provision for credit losses $ 46,930 $ 3,481 $ — $ 50,411 General and administrative $ 155,720 $ — $ (1,572 ) $ 154,148 Operating income $ 281,961 $ (2,409 ) $ 7,295 $ 286,847 Income taxes $ 48,278 $ (1,676 ) $ 4,777 $ 51,379 Net income $ 146,056 $ (733 ) $ 2,518 $ 147,841 Net income attributable to shareholders $ 145,253 $ (733 ) $ 2,518 $ 147,038 Net income attributable to shareholders per share Basic $ 3.37 $ (0.02 ) $ 0.06 $ 3.41 Diluted $ 3.33 $ (0.02 ) $ 0.06 $ 3.38 Nine Months Ended September 30, 2018 (In thousands) As Previously Reported Brazil Adjustments Other Immaterial Adjustments As Revised Net cash provided by operating activities $ 183,133 $ — $ 4,553 $ 187,686 Cash, cash equivalents and restricted cash, beginning of period $ 526,938 $ — $ (4,553 ) $ 522,385

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Tables)	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table provides a brief description of accounting pronouncements adopted during the nine months ended September 30, 2019 and recent accounting pronouncements that could have a material effect on our financial statements: Standard Description Date/Method of Adoption Effect on financial statements or other significant matters Adopted During the Nine Months Ended September 30, 2019 ASU 2016–02 This standard requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The Company adopted ASU 2016–02 effective January 1, 2019, using the modified retrospective approach and all practical expedients permitted under the transition guidance. In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016–02, Leases (Topic 842), which requires leases with a duration greater than twelve months to be recognized on the balance sheet as right-of-use (“ROU”) assets and lease liabilities. We adopted the new standard using the modified retrospective approach and have elected the package of practical expedients permitted under the transition guidance, but have not utilized the hindsight practical expedient for expired or existing contracts. Therefore, we carried forward our historical determination of (i) whether a contract is or contains a lease, (ii) lease classification and (iii) initial direct costs. Additionally, we elected the practical expedients, which allowed us to (i) not perform an allocation of lease and non-lease components for real estate leases, (ii) continue to account for short-term leases under Topic 840 and (iii) utilize our incremental borrowing rate (“IBR”), rather than the rate implicit in each lease, to calculate the present value of the remaining lease payments. As such, the unaudited condensed consolidated financial statements for the period ended September 30, 2019 are presented under the new standard, while comparative periods presented continue to be reported in accordance with Topic 840. The most significant impact of adoption was the recording of operating lease ROU assets and operating lease liabilities on our unaudited condensed consolidated balance sheets at January 1, 2019. Refer to Note 14, Leases, for more information. The standard did not materially impact our results of operations or cash flows. ASU 2018 – 15 This standard clarifies the accounting for capitalizing implementation costs in a cloud computing arrangement that is a service contract. The standard provides that implementation costs be treated using the same criteria used for internal-use software development costs, with amortization expense being recorded in the same income statement expense line as the hosted service costs and over the expected term of the hosting arrangement. Effective January 1, 2019, the Company early adopted ASU 2018–15 on a prospective basis. Under the standard, we now capitalize implementation costs related to our cloud migration of technology platforms to the cloud. Such amounts are amortized over the lesser of the term of the hosting arrangement, considering any explicit renewal options for which we are reasonably certain to exercise, or the useful life of the underlying hosted software. This standard did not materially impact our results of operations, cash flows or consolidated financial position. Not Yet Adopted as of September 30, 2019 ASU 2016 – 13 This standard requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that impact the collectability of the reported amount. The standard is effective January 1, 2020. The current expected credit loss model outlined in the ASU differs from existing US GAAP as it is based on expected rather than incurred losses. The standard requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. The Company has established a cross-functional task force charged with evaluating the requirements of the new standard, the availability and extent of historical data, relevant economic indicators and the impact this standard will have on our processes, systems and internal controls. We are currently in the process of gathering historical data, selecting our credit loss model, assessing system requirements and evaluating disclosure requirements. Though the Company continues to assess the impact of adoption, we currently believe the most significant effects of the ASU will be incorporating economic factors into our credit loss reserve methodologies and providing expanded disclosures on expected credit losses. At this time, the impact on credit loss reserves is not expected to be material.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Summary of Disaggregation of Revenue	The following tables disaggregate our consolidated revenue: Three Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 125,288 $ 85,128 $ 14,340 $ 224,756 Account servicing revenue 7,165 10,717 56,451 74,333 Other revenue 19,851 690 7,243 27,784 Total Topic 606 revenues $ 152,304 $ 96,535 $ 78,034 $ 326,873 Non-Topic 606 revenues Account servicing revenue $ 34,872 $ — $ — $ 34,872 Finance fee revenue 65,818 645 (81 ) 66,382 Other revenue 24,532 1,948 5,356 31,836 Total non-Topic 606 revenues $ 125,222 $ 2,593 $ 5,275 $ 133,090 Total revenues $ 277,526 $ 99,128 $ 83,309 $ 459,963 Three Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 116,023 $ 54,345 $ 12,503 $ 182,871 Account servicing revenue 6,920 9,120 26,818 42,858 Other revenue 11,721 1,063 6,359 19,143 Total Topic 606 revenues $ 134,664 $ 64,528 $ 45,680 $ 244,872 Non-Topic 606 revenues Account servicing revenue $ 35,890 $ — $ — $ 35,890 Finance fee revenue 51,644 670 5,359 57,673 Other revenue 27,371 17,612 3,199 48,182 Total non-Topic 606 revenues $ 114,905 $ 18,282 $ 8,558 $ 141,745 Total revenues $ 249,569 $ 82,810 $ 54,238 $ 386,617 Nine Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 353,413 $ 222,399 $ 50,568 $ 626,380 Account servicing revenue 20,601 32,019 148,382 201,002 Other revenue 56,446 2,488 21,018 79,952 Total Topic 606 revenues $ 430,460 $ 256,906 $ 219,968 $ 907,334 Non-Topic 606 revenues Account servicing revenue $ 102,181 $ — $ — $ 102,181 Finance fee revenue 174,067 1,498 102 175,667 Other revenue 70,914 13,722 13,828 98,464 Total non-Topic 606 revenues $ 347,162 $ 15,220 $ 13,930 $ 376,312 Total revenues $ 777,622 $ 272,126 $ 233,898 $ 1,283,646 Nine Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Topic 606 revenues Payment processing revenue $ 335,896 $ 150,411 $ 43,756 $ 530,063 Account servicing revenue 20,770 27,584 80,545 128,899 Other revenue 39,288 3,386 19,775 62,449 Total Topic 606 revenues $ 395,954 $ 181,381 $ 144,076 $ 721,411 Non-Topic 606 revenues Account servicing revenue $ 107,269 $ — $ — $ 107,269 Finance fee revenue 140,436 1,157 16,514 158,107 Other revenue 77,687 42,815 4,154 124,656 Total non-Topic 606 revenues $ 325,392 $ 43,972 $ 20,668 $ 390,032 Total revenues $ 721,346 $ 225,353 $ 164,744 $ 1,111,443
Summary of Contract Assets and Liabilities	The following table provides information about these contract balances: (In thousands) Contract balance Location on the unaudited condensed consolidated balance sheets September 30, 2019 December 31, 2018 Receivables 1 Accounts receivable, net $ 43,476 $ 32,949 Contract assets Prepaid expenses and other current assets $ 4,064 $ 3,819 Contract assets Other assets $ 19,514 $ 19,232 Contract liabilities Other current liabilities $ 3,402 $ 7,612 1 The majority of the Company’s receivables, which are excluded from the table above, are either due from cardholders, who have not been deemed our customer as it relates to interchange income, or from revenues earned outside of the scope of Topic 606.
Schedule of Remaining Performance Obligations	The following table includes revenue expected to be recognized related to remaining performance obligations at the end of the reporting period. (In thousands) Remaining 2019 2020 2021 2022 2023 2024 Total Minimum monthly fees 1 $ 16,164 $ 45,053 $ 26,797 $ 14,950 $ 4,449 $ 902 $ 108,315 Professional services 2 4,619 4,637 — — — — 9,256 Total remaining performance obligations $ 20,783 $ 49,690 $ 26,797 $ 14,950 $ 4,449 $ 902 $ 117,571 1 The transaction price allocated to the remaining performance obligations represents the minimum monthly fees on certain service contracts, which contain substantive termination penalties that require the counterparty to pay the Company for the aggregate remaining minimum monthly fees upon an early termination for convenience. 2 Includes software development projects and other services sold subsequent to the core offerings, to which the customer is contractually obligated.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of Business Acquisitions	The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Cash consideration, net of $125,865 in cash and restricted cash acquired $ 250,191 Fair value of redeemable non-controlling interest 100,000 Deferred cash consideration 50,000 Total consideration, net of cash and restricted cash acquired $ 400,191 Less: Accounts receivable 10,722 Property and equipment 4,904 Customer relationships (a)(d) 213,600 Developed technologies (b)(d) 38,900 Trademarks and trade names (c)(d) 13,800 Other assets 13,601 Accounts payable (3,071 ) Accrued expenses (7,563 ) Restricted cash payable (125,346 ) Deferred income taxes (22,200 ) Other liabilities (9,814 ) Recorded goodwill $ 272,658 (a) Weighted average life - 7.3 years . (b) Weighted average life - 5.4 years . (c) Weighted average life - 7.3 years . (d) The weighted average life of all amortizable intangible assets acquired in this business combination is 7.0 years . The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Total consideration, net of $44,947 in cash acquired $ 293,767 Less: Accounts receivable 22,134 Property and equipment 549 Network relationships (a) (c) 100,900 Developed technologies (b) (c) 15,000 Other assets 2,379 Accounts payable (33,521 ) Deferred income tax liabilities (24,121 ) Other liabilities (2,367 ) Recorded goodwill $ 212,814 (a) Weighted average life - 8.3 years . (b) Weighted average life - 2.9 years . (c) The weighted average life of all amortizable intangible assets acquired in this business combination is 7.6 years . The following is a summary of the preliminary allocation of the purchase price to the assets and liabilities acquired, based on the estimated fair value at the date of acquisition: (In thousands) Total consideration $ 266,044 Less: Accounts receivable 5,589 Network relationships (a) (d) 112,893 Customer relationships (b)(d) 33,963 Brand name (c) (d) 442 Deposits (5,169 ) Accrued expenses (420 ) Recorded goodwill $ 118,746 (a) Weighted average life - 10.1 years . (b) Weighted average life - 5.0 years . (c) Weighted average life - 1.0 year . (d) The weighted average life of all amortizable intangible assets acquired in this business combination is 8.9 years .
Business Acquisition, Pro Forma Information	The following represents unaudited pro forma operational results as if the acquisitions had occurred January 1, 2018: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Total revenues $ 459,963 $ 414,723 $ 1,302,752 $ 1,193,957 Net income attributable to shareholders $ 19,178 $ 49,546 $ 53,213 $ 125,823 Net income attributable to shareholders per share: Basic $ 0.44 $ 1.15 $ 1.23 $ 2.92 Diluted $ 0.44 $ 1.14 $ 1.22 $ 2.89

Accounts Receivable (Tables)

Accounts Receivable (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Past Due Financing Receivables	The following table presents the outstanding balance of trade accounts receivable that are less than 30 and 60 days past due, in each case, as a percentage of total trade accounts receivable: Delinquency Status September 30, 2019 December 31, 2018 29 days or less past due 96 % 95 % 59 days or less past due 97 % 98 %
Changes in Reserves for Credit Losses Related to Accounts Receivable	The following table presents changes in the accounts receivable allowances: Nine Months Ended September 30, (In thousands) 2019 2018 Balance, beginning of year $ 46,948 $ 33,387 Provision for credit losses 47,470 50,411 Other 1 18,382 14,408 Charge-offs (69,864 ) (58,532 ) Recoveries of amounts previously charged-off 7,149 5,439 Currency translation (820 ) (349 ) Balance, end of period $ 49,265 $ 44,764 1

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Reconciliation of Income and Share Data Used in Basic and Diluted Earnings Per Share Computations	The following table summarizes net income attributable to shareholders and reconciles basic and diluted shares outstanding used in the earnings per share computations: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2019 2018 2019 2018 Net income attributable to shareholders $ 14,619 $ 56,644 $ 44,560 $ 147,038 Weighted average common shares outstanding – Basic 43,349 43,191 43,300 43,141 Dilutive impact of share-based compensation awards 462 424 415 417 Weighted average common shares outstanding – Diluted 43,811 43,615 43,715 43,558

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table presents relevant information for the interest rate swap agreements entered into during the nine months ended September 30, 2019 : Tranche A Tranche B Tranche C Notional amount at inception (in thousands) $150,000 $100,000 $200,000 Maturity date 3/12/2022 3/12/2022 3/12/2023 Fixed interest rate 2.41750% 2.42500% 2.41325%
Location and Amounts of Derivative Gains and Losses in Condensed Consolidated Statements of Income	The following table presents information on the location and amounts of interest rate swap gains and losses: (In thousands) Three Months Ended September 30, Nine Months Ended September 30, Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Statement 2019 2018 2019 2018 Interest rate swap agreements – unrealized portion Net unrealized (loss) gain on financial instruments $ (5,834 ) $ 2,340 $ (39,903 ) $ 19,792 Interest rate swap agreements – realized portion Financing interest income $ 1,355 $ 1,866 $ 5,613 $ 3,542

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Schedule of Deposits	The following table presents the composition of deposits, which are classified based on their contractual maturities: (In thousands) September 30, 2019 December 31, 2018 Interest-bearing brokered money market deposits (a) $ 275,970 $ 283,790 Customer deposits 121,849 138,072 Certificates of deposit with maturities within 1 year (a)(b) 760,824 505,582 Short-term deposits 1,158,643 927,444 Certificates of deposit with maturities greater than 1 year and less than 5 years (a)(b) 416,295 345,231 Total deposits $ 1,574,938 $ 1,272,675 Weighted average cost of funds on certificates of deposit outstanding 2.40 % 2.36 % Weighted average cost of interest-bearing brokered money market deposits 2.19 % 2.49 % (a) As of September 30, 2019 , all brokered deposits were in denominations of $250 thousand or less, corresponding to FDIC deposit insurance limits. (b) Original maturities range from 2 months to 5 years , with interest rates ranging from 1.70 percent to 3.52 percent as of September 30, 2019 . At December 31, 2018 , original maturities ranged from 6 months to 5 years with interest rates ranging from 1.30 percent to 3.52 percent .

Financing and Other Debt (Table

Financing and Other Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Outstanding Debt	The following table summarizes the Company’s total outstanding debt by type: (In thousands) September 30, 2019 December 31, 2018 Tranche A term loan 936,190 423,637 Tranche B term loan 1,460,718 1,321,447 Term loans under 2016 Credit Agreement (a) 2,396,908 1,745,084 Notes outstanding (a) 400,000 400,000 Securitized debt 94,921 106,872 Participation debt 44,265 114,849 WEX Latin America debt 817 16,242 Total gross debt $ 2,936,911 $ 2,383,047 (a) See Note 11, Fair Value, for more information regarding the Company’s 2016 Credit Agreement and Notes. The following table summarizes the Company’s total outstanding debt by balance sheet classification: (In thousands) September 30, 2019 December 31, 2018 Current portion of gross debt $ 204,613 $ 223,241 Less: Unamortized debt issuance costs (8,027 ) (6,724 ) Short-term debt, net $ 196,586 $ 216,517 Long-term portion of gross debt $ 2,732,298 $ 2,159,806 Less: Unamortized debt issuance costs (31,649 ) (25,883 ) Long-term debt, net $ 2,700,649 $ 2,133,923 Supplemental information under 2016 Credit Agreement: Letters of credit (b) $ 51,310 $ 53,514 Remaining borrowing capacity on revolving credit facility (c) $ 718,690 $ 666,486 (b) Collateral for lease agreements, virtual card and fuel payment processing activity at the Company’s foreign subsidiaries. (c) Contingent on maintaining compliance with the financial covenants as defined in the Company’s 2016 Credit Agreement.
Schedule of Amounts Outstanding Under Participation Debt Agreements in Place	The following table provides the amounts outstanding under the participation debt agreements in place: September 30, 2019 December 31, 2018 (In thousands) Amounts Available Amounts Outstanding Remaining Funding Capacity Amounts Available Amounts Outstanding Remaining Funding Capacity Short-term debt, net (a) $ 180,000 $ 44,265 $ 135,735 $ 130,000 $ 64,849 $ 65,151 Long-term debt, net (a) — — — 50,000 50,000 — $ 180,000 $ 44,265 $ 135,735 $ 180,000 $ 114,849 $ 65,151 Average interest rate 4.47 % 4.30 % (a) Amounts outstanding under agreements terminating on December 27, 2019 and August 31, 2020.

Fair Value Fair Value (Tables)

Fair Value Fair Value (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	The following table presents the Company’s financial instruments that are measured at fair value: (In thousands) Fair Value Hierarchy September 30, 2019 December 31, 2018 Financial Assets: Money market funds (a) 1 $ 76,004 $ 71,228 Investment securities Municipal bonds 2 $ 309 $ 404 Asset-backed securities 2 255 279 Mortgage-backed securities 2 177 260 Equity security measured at net asset value NAV 5,000 — Fixed-income mutual fund 1 24,717 23,463 Total investment securities $ 30,458 $ 24,406 Executive deferred compensation plan trust (b) 1 $ 7,661 $ 6,398 Interest rate swaps (c) 2 $ 2,891 $ 17,994 Liabilities Interest rate swaps (d) 2 $ 24,800 $ — (a) The fair value is recorded in cash and cash equivalents. (b) The fair value is recorded in prepaid expenses and other current assets and other assets based on the timing of payment obligations. (c) The fair value is recorded in prepaid expenses and other current assets or other assets depending on the timing of expected discounted cash flows. (d) The fair value is recorded in other current liabilities or other liabilities depending on the timing of expected discounted cash flows.

Redeemable Non-Controlling In_2

Redeemable Non-Controlling Interest (Tables)	9 Months Ended
	Sep. 30, 2019
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest	The following table presents the changes in the Company’s redeemable non-controlling interest: (In thousands) Nine Months Ended September 30, 2019 Balance, beginning of period $ — Acquisition of Discovery Benefits at fair value 25,757 Establishing redeemable non-controlling interest for WEX Health at carrying value 32,843 Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value 41,400 Net income attributable to redeemable non-controlling interest 39 Accretion of non-controlling interest 46,179 Balance, end of period $ 146,218

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Supplemental Balance Sheet Information Related to Leases	The following table presents supplemental balance sheet information related to our leases: (In thousands) Balance Sheet Location September 30, 2019 Assets Operating lease ROU assets Other assets $ 69,617 Liabilities Current operating lease liabilities Other current liabilities 12,469 Non-current operating lease liabilities Other liabilities 69,567 Total lease liabilities $ 82,036
Schedule of Lease Term and Discount Rate	The following table presents supplemental cash flow and other information related to our leases: (In thousands) Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 12,234 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 8,388 The following table presents the weighted average remaining lease term and discount rate: Operating leases September 30, 2019 Weighted average remaining term (in years) 8.8 Weighted average discount rate 4.6 %
Schedule of Maturities of Lease Liabilities	The following table presents the maturities of our lease liabilities: (In thousands) September 30, 2019 Remaining 2019 $ 3,958 2020 15,501 2021 14,726 2022 12,888 2023 9,225 2024 and thereafter 44,264 Total lease payments $ 100,562 Less: Imputed interest 18,526 Total lease obligations $ 82,036 Less: Current portion of lease obligations 12,469 Long-term lease obligations $ 69,567

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Assumptions Used	The table below presents the weighted average fair value of service-based stock options by year of grant and the assumptions used in estimating those fair values: 2019 2018 Weighted average grant date fair value $ 58.28 $ 51.27 Weighted average expected life (in years) 6.0 6.0 Weighted average exercise price $ 184.81 $ 158.23 Expected stock price volatility 27.21 % 27.35 % Risk-free interest rate 2.37 % 2.69 %

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Schedule of Reportable Segment Results	The following tables present the Company’s reportable segment revenues: Three Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Revenues Payment processing revenue $ 125,288 $ 85,128 $ 14,340 $ 224,756 Account servicing revenue 42,037 10,717 56,451 109,205 Finance fee revenue 65,818 645 (81 ) 66,382 Other revenue 44,383 2,638 12,599 59,620 Total revenues $ 277,526 $ 99,128 $ 83,309 $ 459,963 Interest income $ 825 $ 402 $ 449 $ 1,676 Three Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Benefit Solutions Total Revenues Payment processing revenue $ 116,023 $ 54,345 $ 12,503 $ 182,871 Account servicing revenue 42,810 9,120 26,818 78,748 Finance fee revenue 51,644 670 5,359 57,673 Other revenue 39,092 18,675 9,558 67,325 Total revenues $ 249,569 $ 82,810 $ 54,238 $ 386,617 Interest income $ 1,092 $ 172 $ 4,513 $ 5,777 Nine Months Ended September 30, 2019 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Total Revenues Payment processing revenue $ 353,413 $ 222,399 $ 50,568 $ 626,380 Account servicing revenue 122,782 32,019 148,382 303,183 Finance fee revenue 174,067 1,498 102 175,667 Other revenue 127,360 16,210 34,846 178,416 Total revenues $ 777,622 $ 272,126 $ 233,898 $ 1,283,646 Interest income $ 4,844 $ 1,209 $ 1,036 $ 7,089 Nine Months Ended September 30, 2018 (In thousands) Fleet Solutions Travel and Corporate Solutions Health and Employee Total Revenues Payment processing revenue $ 335,896 $ 150,411 $ 43,756 $ 530,063 Account servicing revenue 128,039 27,584 80,545 236,168 Finance fee revenue 140,436 1,157 16,514 158,107 Other revenue 116,975 46,201 23,929 187,105 Total revenues $ 721,346 $ 225,353 $ 164,744 $ 1,111,443 Interest income $ 3,127 $ 715 $ 14,847 $ 18,689
Reconciliation of Adjusted Net Income to Income Before Income Taxes	The following table reconciles segment adjusted operating income to income before income taxes: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2019 2018 2019 2018 Segment adjusted operating income Fleet Solutions $ 133,348 $ 112,952 $ 348,900 $ 333,878 Travel and Corporate Solutions 47,356 39,377 122,581 99,074 Health and Employee Benefit Solutions 21,427 13,137 62,353 42,816 Total segment adjusted operating income $ 202,131 $ 165,466 $ 533,834 $ 475,768 Reconciliation: Total segment adjusted operating income $ 202,131 $ 165,466 $ 533,834 $ 475,768 Less: Unallocated corporate expenses 17,016 13,414 52,135 42,378 Acquisition-related intangible amortization 42,800 33,439 116,502 103,596 Other acquisition and divestiture related items 7,907 1,536 24,704 2,792 Debt restructuring costs 1,162 317 10,640 3,798 Stock-based compensation 9,522 9,799 34,956 25,659 Restructuring and other costs 5,413 1,973 12,914 8,274 Impairment charge — 2,424 — 2,424 Operating income 118,311 102,564 281,983 286,847 Financing interest expense (34,549 ) (25,718 ) (101,299 ) (78,560 ) Net foreign currency loss (16,528 ) (1,094 ) (13,748 ) (27,438 ) Net unrealized (loss) gain on financial instruments (5,650 ) 2,157 (39,078 ) 18,371 Income before income taxes $ 61,584 $ 77,909 $ 127,858 $ 199,220

Supplementary Regulatory Capi_2

Supplementary Regulatory Capital Disclosure (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table presents WEX Bank’s actual and regulatory minimum capital amounts and ratios: (In thousands) Actual Amount Ratio Minimum for Capital Adequacy Purposes Amount Ratio Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio September 30, 2019 Total Capital to risk-weighted assets $ 361,900 12.71 % $ 227,829 8.0 % $ 284,786 10.0 % Tier 1 Capital to average assets $ 346,875 11.13 % $ 124,630 4.0 % $ 155,787 5.0 % Common equity to risk-weighted assets $ 346,875 12.18 % $ 128,154 4.5 % $ 185,111 6.5 % Tier 1 Capital to risk-weighted assets $ 346,875 12.18 % $ 170,872 6.0 % $ 227,829 8.0 % December 31, 2018 Total Capital to risk-weighted assets $ 323,178 12.82 % $ 201,749 8.0 % $ 252,186 10.0 % Tier 1 Capital to average assets $ 305,734 10.88 % $ 112,401 4.0 % $ 140,501 5.0 % Common equity to risk-weighted assets $ 305,734 12.12 % $ 113,484 4.5 % $ 163,921 6.5 % Tier 1 Capital to risk-weighted assets $ 305,734 12.12 % $ 151,312 6.0 % $ 201,749 8.0 %

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenues	$ 459,963			$ 386,617			$ 1,283,646	$ 1,111,443
Provision for credit losses	14,847			22,549			47,470	50,411
General and administrative	65,423			51,126			206,075	154,148
Operating income	118,311			102,564			281,983	286,847
Income taxes	19,137			21,305			37,352	51,379
Net income	42,447	$ 31,851	$ 16,208	56,604	$ 38,567	$ 52,671	90,506	147,841
Net income attributable to shareholders	$ 14,619			$ 56,644			$ 44,560	$ 147,038
Net income attributable to shareholders per share:
Basic (in dollars per share)	$ 0.34			$ 1.31			$ 1.03	$ 3.41
Diluted (in dollars per share)	$ 0.33			$ 1.30			$ 1.02	$ 3.38
Net cash provided by operating activities							$ 205,235	$ 187,686
Cash, cash equivalents and restricted cash, beginning of period	$ 671,195			$ 556,057			671,195	556,057	$ 555,031	$ 522,385
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenues				382,690				1,108,395
Provision for credit losses				21,435				46,930
General and administrative				51,799				155,720
Operating income				100,688				281,961
Income taxes				18,751				48,278
Net income				57,282				146,056
Net income attributable to shareholders				$ 57,322				$ 145,253
Net income attributable to shareholders per share:
Basic (in dollars per share)				$ 1.33				$ 3.37
Diluted (in dollars per share)				$ 1.31				$ 3.33
Net cash provided by operating activities								$ 183,133
Cash, cash equivalents and restricted cash, beginning of period										526,938
Brazil Adjustments | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenues				$ (614)				(2,675)
Provision for credit losses				1,114				3,481
General and administrative				0				0
Operating income				(3,338)				(2,409)
Income taxes				(1,779)				(1,676)
Net income				(1,559)				(733)
Net income attributable to shareholders				$ (1,559)				$ (733)
Net income attributable to shareholders per share:
Basic (in dollars per share)				$ (0.04)				$ (0.02)
Diluted (in dollars per share)				$ (0.04)				$ (0.02)
Net cash provided by operating activities								$ 0
Cash, cash equivalents and restricted cash, beginning of period										0
Other Immaterial Adjustments | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenues				$ 4,541				5,723
Provision for credit losses				0				0
General and administrative				(673)				(1,572)
Operating income				5,214				7,295
Income taxes				4,333				4,777
Net income				881				2,518
Net income attributable to shareholders				$ 881				$ 2,518
Net income attributable to shareholders per share:
Basic (in dollars per share)				$ 0.02				$ 0.06
Diluted (in dollars per share)				$ 0.02				$ 0.06
Net cash provided by operating activities								$ 4,553
Cash, cash equivalents and restricted cash, beginning of period										$ (4,553)
Payment processing revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Processing costs	$ 98,296			$ 81,190			$ 288,896	231,761
Payment processing revenue | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Processing costs				79,580				235,508
Payment processing revenue | Brazil Adjustments | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Processing costs				1,610				(3,747)
Payment processing revenue | Other Immaterial Adjustments | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Processing costs				$ 0				$ 0

Revenue - Summary of Disaggrega

Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	$ 326,873	$ 244,872	$ 907,334	$ 721,411
Non-topic 606 revenues	133,090	141,745	376,312	390,032
Total revenues	459,963	386,617	1,283,646	1,111,443
Fleet Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	152,304	134,664	430,460	395,954
Non-topic 606 revenues	125,222	114,905	347,162	325,392
Total revenues	277,526	249,569	777,622	721,346
Travel and Corporate Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	96,535	64,528	256,906	181,381
Non-topic 606 revenues	2,593	18,282	15,220	43,972
Total revenues	99,128	82,810	272,126	225,353
Health and Employee Benefit Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	78,034	45,680	219,968	144,076
Non-topic 606 revenues	5,275	8,558	13,930	20,668
Total revenues	83,309	54,238	233,898	164,744
Payment processing revenue
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	224,756	182,871	626,380	530,063
Payment processing revenue | Fleet Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	125,288	116,023	353,413	335,896
Payment processing revenue | Travel and Corporate Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	85,128	54,345	222,399	150,411
Payment processing revenue | Health and Employee Benefit Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	14,340	12,503	50,568	43,756
Account servicing revenue
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	74,333	42,858	201,002	128,899
Non-topic 606 revenues	34,872	35,890	102,181	107,269
Total revenues	109,205	78,748	303,183	236,168
Account servicing revenue | Fleet Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	7,165	6,920	20,601	20,770
Non-topic 606 revenues	34,872	35,890	102,181	107,269
Total revenues	42,037	42,810	122,782	128,039
Account servicing revenue | Travel and Corporate Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	10,717	9,120		27,584
Non-topic 606 revenues	0	0	0	0
Total revenues	10,717	9,120	32,019	27,584
Account servicing revenue | Health and Employee Benefit Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	56,451	26,818		80,545
Non-topic 606 revenues	0	0	0	0
Total revenues	56,451	26,818	148,382	80,545
Finance fee revenue
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Non-topic 606 revenues	66,382	57,673	175,667	158,107
Finance fee revenue | Fleet Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Non-topic 606 revenues	65,818	51,644	174,067	140,436
Finance fee revenue | Travel and Corporate Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Non-topic 606 revenues	645	670	1,498	1,157
Finance fee revenue | Health and Employee Benefit Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Non-topic 606 revenues	(81)	5,359	102	16,514
Other revenue
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	27,784	19,143	79,952	62,449
Non-topic 606 revenues	31,836	48,182	98,464	124,656
Total revenues	59,620	67,325	178,416	187,105
Other revenue | Fleet Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	19,851	11,721	56,446	39,288
Non-topic 606 revenues	24,532	27,371	70,914	77,687
Total revenues	44,383	39,092	127,360	116,975
Other revenue | Travel and Corporate Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	690	1,063	2,488	3,386
Non-topic 606 revenues	1,948	17,612	13,722	42,815
Total revenues	2,638	18,675	16,210	46,201
Other revenue | Health and Employee Benefit Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Topic 606 revenues	7,243	6,359	21,018	19,775
Non-topic 606 revenues	5,356	3,199	13,828	4,154
Total revenues	$ 12,599	$ 9,558	$ 34,846	$ 23,929

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue recognized related to contract liabilities	$ 3.8	$ 2.9	$ 10.2	$ 8.2

Revenue - Contract Assets and L

Revenue - Contract Assets and Liabilities From Contracts with Customers (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	$ 1,158,643	$ 927,444
Accounts receivable, net
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract assets	43,476	32,949
Prepaid expenses and other current assets
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract assets	4,064	3,819
Other assets
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Noncurrent other assets	19,514	19,232
Other current liabilities
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	$ 3,402	$ 7,612

Revenue - Remaining Performance

Revenue - Remaining Performance Obligation (Details) $ in Thousands	Sep. 30, 2019USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 20,783
Performance obligations expected to be satisfied, expected timing	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 16,164
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	4,619
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 49,690
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 45,053
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	4,637
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 26,797
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 26,797
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 14,950
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 14,950
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 4,449
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 4,449
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 902
Performance obligations expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 902
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 117,571
Performance obligations expected to be satisfied, expected timing
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Monthly Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 108,315
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil) | Professional Services
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 9,256

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ in Thousands, € in Millions

Jul. 01, 2019USD ($)

Jul. 01, 2019EUR (€)

Mar. 05, 2019USD ($)

Feb. 14, 2019USD ($)

Jan. 24, 2019USD ($)

Oct. 31, 2018USD ($)

Sep. 30, 2019USD ($)

Sep. 30, 2018USD ($)

Sep. 30, 2019USD ($)

Sep. 30, 2019USD ($)

Sep. 30, 2019USD ($)

Sep. 30, 2018USD ($)

Dec. 31, 2018USD ($)

Jun. 30, 2019USD ($)

Business Acquisition [Line Items]

Payment for trade accounts receivable portfolio

$ 223,400

Premium in excess of receivables' estimated fair value

$ 162,800

Payment in escrow for carrying value of accounts receivable

38,900

Term of agreement

13 years

Acquisition and merger costs related to business combinations

$ 2,400

$ 0

$ 11,300

$ 0

Purchase price of acquisition, net of cash acquired

838,006

$ 0

Goodwill

2,436,411

$ 2,436,411

$ 2,436,411

$ 2,436,411

$ 1,832,129

Discovery Benefits

Business Acquisition [Line Items]

Consideration transferred

$ 526,100

Deferred cash consideration

50,000

Fair value of equity interests acquired

100,000

Revenue from acquiree since acquisition

65,600

Income before income taxes from acquiree since acquisition

$ 4,700

Purchase price of acquisition, net of cash acquired

250,191

Goodwill

272,658

Accounts receivable acquired

$ 10,722

Noventis

Business Acquisition [Line Items]

Consideration transferred

$ 338,700

Revenue from acquiree since acquisition

31,800

Income before income taxes from acquiree since acquisition

$ 5,000

Amount of accelerated vesting of options

5,500

Goodwill

212,814

Accounts receivable acquired

22,134

Pavestone Capital

Business Acquisition [Line Items]

Purchase price of acquisition, net of cash acquired

$ 28,000

Goodwill

9,500

Accounts receivable acquired

14,900

Go Fuel Card

Business Acquisition [Line Items]

Consideration transferred

$ 266,000

€ 235

Revenue from acquiree since acquisition

5,000

Income before income taxes from acquiree since acquisition

$ 5,800

Goodwill

118,746

Accounts receivable acquired

5,589

Discovery Benefits

Business Acquisition [Line Items]

Ownership percentage by noncontrolling interest

4.90%

Customer relationships

Business Acquisition [Line Items]

Asset acquisition, customer relationship intangible assets

$ 168,000

Customer relationships | Discovery Benefits

Business Acquisition [Line Items]

Customer relationships acquired

$ 213,600

Customer relationships | Noventis

Business Acquisition [Line Items]

Customer relationships acquired

$ 100,900

Customer relationships | Pavestone Capital

Business Acquisition [Line Items]

Customer relationships acquired

$ 3,900

Customer relationships | Go Fuel Card

Business Acquisition [Line Items]

Customer relationships acquired

$ 33,963

Acquisitions - Schedules of Ass

Acquisitions - Schedules of Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	Jul. 01, 2019	Mar. 05, 2019	Jan. 24, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Cash consideration, net of $125,865 in cash and restricted cash acquired				$ 838,006	$ 0
Less:
Recorded goodwill				$ 2,436,411		$ 1,832,129
Weighted average life (in years)		7 years
Discovery Benefits
Business Acquisition [Line Items]
Cash consideration, net of $125,865 in cash and restricted cash acquired		$ 250,191
Fair value of redeemable non-controlling interest		100,000
Deferred cash consideration		50,000
Restricted cash		125,865
Less:
Accounts receivable		10,722
Property and equipment		4,904
Other assets		13,601
Accounts payable		(3,071)
Accrued expenses		(7,563)
Restricted cash payable		(125,346)
Deferred income taxes		(22,200)
Other liabilities		(9,814)
Recorded goodwill		$ 272,658
Noventis
Business Acquisition [Line Items]
Total consideration			$ 293,767
Restricted cash			44,947
Less:
Accounts receivable			22,134
Property and equipment			549
Other assets			2,379
Accounts payable			(33,521)
Deferred income taxes			(24,121)
Other liabilities			(2,367)
Recorded goodwill			$ 212,814
Weighted average life (in years)			7 years 7 months 6 days
Go Fuel Card
Business Acquisition [Line Items]
Total consideration	$ 266,044
Less:
Accounts receivable	5,589
Deposits	(5,169)
Accrued expenses	(420)
Recorded goodwill	$ 118,746
Weighted average life (in years)	8 years 10 months 24 days
Network Relationships | Go Fuel Card
Less:
Intangible assets	$ 112,893
Weighted average life (in years)	10 years 1 month 6 days
Customer relationships
Less:
Weighted average life (in years)		7 years 3 months 18 days
Customer relationships | Discovery Benefits
Business Acquisition [Line Items]
Total consideration		$ 400,191
Less:
Intangible assets		$ 213,600
Customer relationships | Noventis
Less:
Intangible assets			$ 100,900
Weighted average life (in years)			8 years 3 months 18 days
Customer relationships | Go Fuel Card
Less:
Intangible assets	$ 33,963
Weighted average life (in years)	5 years
Developed technologies
Less:
Weighted average life (in years)		5 years 4 months 24 days
Developed technologies | Discovery Benefits
Less:
Intangible assets		$ 38,900
Developed technologies | Noventis
Less:
Intangible assets			$ 15,000
Weighted average life (in years)			2 years 10 months 24 days
Trademarks and trade names
Less:
Weighted average life (in years)		7 years 3 months 18 days
Trademarks and trade names | Discovery Benefits
Less:
Intangible assets		$ 13,800
Trademarks and trade names | Go Fuel Card
Less:
Intangible assets	$ 442
Weighted average life (in years)	1 year

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro Forma Information (Details) - Discovery Benefits and Noventis - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenues	$ 459,963	$ 414,723	$ 1,302,752	$ 1,193,957
Net income attributable to shareholders	$ 19,178	$ 49,546	$ 53,213	$ 125,823
Net income attributable to shareholders per share:
Basic (in dollars per share)	$ 0.44	$ 1.15	$ 1.23	$ 2.92
Diluted (in dollars per share)	$ 0.44	$ 1.14	$ 1.22	$ 2.89

Accounts Receivable - Additiona

Accounts Receivable - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Trade receivable payments terms (30 days or less)	30 days
Threshold period past due for write-off of trade accounts receivable	150 days
Revolving line-of-credit facility under 2016 Credit Agreement
Concentration Risk [Line Items]
Receivables with revolving credit balances	$ 66.8	$ 18.9
29 days or less past due | Credit Concentration Risk | Accounts receivable, net
Concentration Risk [Line Items]
Concentration risk, percentage	96.00%	95.00%
59 days or less past due | Credit Concentration Risk | Accounts receivable, net
Concentration Risk [Line Items]
Concentration risk, percentage	97.00%	98.00%

Accounts Receivable - Changes i

Accounts Receivable - Changes in Reserves for Accounts Receivable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of year	$ 46,948	$ 33,387
Provision for credit losses	47,470	50,411
Other	18,382	14,408
Charge-offs	(69,864)	(58,532)
Recoveries of amounts previously charged-off	7,149	5,439
Currency translation	(820)	(349)
Balance, end of period	$ 49,265	$ 44,764

Earnings per Share - Summary of

Earnings per Share - Summary of Net Earning Attributable to Shareholders and Reconciliation of Basic and Diluted Shares (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income attributable to shareholders	$ 14,619	$ 56,644	$ 44,560	$ 147,038
Weighted average common shares outstanding – Basic (in shares)	43,349	43,191	43,300	43,141
Dilutive impact of share-based compensation awards (in shares)	462	424	415	417
Weighted average common shares outstanding – Diluted (in shares)	43,811	43,615	43,715	43,558

Earnings per Share - Stock Opti

Earnings per Share - Stock Options and Restricted Stock Units (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	0	0

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Details) $ in Thousands	Sep. 30, 2019USD ($)	Mar. 12, 2019contract	Dec. 31, 2018USD ($)contract
Derivative [Line Items]
Lines of credit outstanding	$ 51,310		$ 53,514
Interest rate swaps
Derivative [Line Items]
Number of interest rate swap contracts entered into | contract		3	4
Borrowings under derivative agreements	1,400,000		$ 1,000,000
Interest rate swaps | Minimum
Derivative [Line Items]
Fixed rate variable interest			1.108%
Interest rate swaps | Maximum
Derivative [Line Items]
Fixed rate variable interest			2.212%
2016 Credit Agreement
Derivative [Line Items]
Lines of credit outstanding	$ 2,400,000

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Interest Rate Swaps (Details) - Derivatives Not Designated as Hedging Instruments $ in Thousands	Sep. 30, 2019USD ($)
Tranche A
Derivative [Line Items]
Notional amount at inception (in thousands)	$ 150,000
Fixed interest rate	2.4175%
Tranche B
Derivative [Line Items]
Notional amount at inception (in thousands)	$ 100,000
Fixed interest rate	2.425%
Tranche C
Derivative [Line Items]
Notional amount at inception (in thousands)	$ 200,000
Fixed interest rate	2.41325%

Derivative Instruments - Locati

Derivative Instruments - Location and Amounts of Interest Rate Swap Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains on financial instruments	$ (5,650)	$ 2,157	$ (39,078)	$ 18,371
Derivatives Not Designated as Hedging Instruments | Net unrealized gain on interest rate swap agreements | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains on financial instruments	(5,834)	2,340	(39,903)	19,792
Derivatives Not Designated as Hedging Instruments | Financing interest income | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains on financial instruments	$ 1,355	$ 1,866	$ 5,613	$ 3,542

Deposits - Schedule of Composi

Deposits - Schedule of Composition of Deposits (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Interest-bearing brokered money market deposits	$ 275,970	$ 283,790
Customer deposits	121,849	138,072
Certificates of deposit with maturities within 1 year	760,824	505,582
Short-term deposits	1,158,643	927,444
Certificates of deposit with maturities greater than 1 year and less than 5 years	416,295	345,231
Total deposits	$ 1,574,938	$ 1,272,675
Weighted average cost of funds on certificates of deposit outstanding (as a percent)	2.40%	2.36%
Weighted average cost of interest-bearing money market deposits (as a percent)	2.19%	2.49%
Minimum
Debt Instrument [Line Items]
Certificate of deposits maturities period	2 months	6 months
Certificate of deposits, fixed interest rates range (as a percent)	1.70%	1.30%
Maximum
Debt Instrument [Line Items]
Certificate of deposits maturities period	5 years	5 years
Certificate of deposits, fixed interest rates range (as a percent)	3.52%	3.52%

Financing and Other Debt - Sche

Financing and Other Debt - Schedule of Debt (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,936,911,000	$ 2,383,047,000
Current portion of gross debt	204,613,000	223,241,000
Less: Unamortized debt issuance costs	(8,027,000)	(6,724,000)
Short-term debt, net	196,586,000	216,517,000
Long-term portion of gross debt	2,732,298,000	2,159,806,000
Less: Unamortized debt issuance costs	(31,649,000)	(25,883,000)
Long-term debt, net	2,700,649,000	2,133,923,000
Supplemental information under 2016 Credit Agreement:
Letters of credit	51,310,000	53,514,000
Amounts Available	718,690,000	666,486,000
2016 Credit Agreement
Supplemental information under 2016 Credit Agreement:
Letters of credit	2,400,000,000
Loan Participations and Assignments
Debt Instrument [Line Items]
Long-term debt, gross	44,265,000	114,849,000
Supplemental information under 2016 Credit Agreement:
Amounts Available	180,000,000	180,000,000
Secured debt
Debt Instrument [Line Items]
Long-term debt, gross	94,921,000	106,872,000
Line of Credit
Debt Instrument [Line Items]
Long-term debt, gross		0
Line of Credit | Secured debt | 2016 Credit Agreement
Debt Instrument [Line Items]
Long-term debt, gross	2,396,908,000	1,745,084,000
Line of Credit | Secured debt | Tranche A term loan
Debt Instrument [Line Items]
Long-term debt, gross	936,190,000	423,637,000
Line of Credit | Secured debt | Tranche B term loan
Debt Instrument [Line Items]
Long-term debt, gross	1,460,718,000	1,321,447,000
Notes payable | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 400,000,000	$ 400,000,000

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Required reserve based on the outstanding customer deposits	$ 12,500,000	$ 11,100,000
Maximum money market and demand deposit accounts purchasable	125,000,000
Outstanding balance of ICS purchases	$ 0	$ 0

Financing and Other Debt - Addi

Financing and Other Debt - Additional Information (Details) - USD ($)	Jan. 18, 2019	Apr. 07, 2016	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018	May 17, 2019	Mar. 05, 2019
Debt Instrument [Line Items]
Debt issuance costs	$ 3,400,000					$ 11,000,000
Amounts Available			$ 718,690,000	$ 718,690,000	$ 666,486,000
Long-term debt			$ 2,936,911,000	$ 2,936,911,000	$ 2,383,047,000
2016 Credit Agreement
Debt Instrument [Line Items]
Average interest rate			4.20%	4.20%	4.70%
Delayed Draw Commitment
Debt Instrument [Line Items]
Current borrowing capacity	275,000,000
Loan Participations and Assignments
Debt Instrument [Line Items]
Average interest rate			4.47%	4.47%	4.30%
Amounts Available			$ 180,000,000	$ 180,000,000	$ 180,000,000
Long-term debt			$ 44,265,000	$ 44,265,000	$ 114,849,000
Loan Participations and Assignments | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Margin on variable rate, percent				2.25%
Australian Securitization Facility
Debt Instrument [Line Items]
Percentage used as collateral			85.00%	85.00%
Interest rate during period, percent				1.98%	2.89%
Short-term debt, net			$ 73,400,000	$ 73,400,000	$ 87,000,000
European Securitization Facility
Debt Instrument [Line Items]
Interest rate during period, percent				1.06%	0.98%
Debt instrument, term		5 years
Securitized debt			21,500,000	$ 21,500,000	$ 18,000,000
Credit Facility Term Loans | Tranche A term loan
Debt Instrument [Line Items]
Current borrowing capacity					480,000,000		$ 250,000,000
Incremental revolving commitments	300,000,000
Mandatory quarterly payments				12,500,000
Loss on extinguishment of debt			1,300,000
General and administrative costs incurred	(10,600,000)
Credit Facility Term Loans | Tranche B term loan
Debt Instrument [Line Items]
Current borrowing capacity					1,335,000,000
Incremental revolving commitments						$ 150,000,000
Mandatory quarterly payments				$ 3,700,000
Credit Facility Term Loans | Tranche B term loan | Base Rate
Debt Instrument [Line Items]
Margin on variable rate, percent				2.25%
Credit Facility Term Loans | Tranche B term loan | Eurocurrency Rate
Debt Instrument [Line Items]
Margin on variable rate, percent				1.25%
Credit Facility Term Loans | Revolving line-of-credit facility under 2016 Credit Agreement
Debt Instrument [Line Items]
Incremental revolving commitments							$ 50,000,000
Revolving line-of-credit facility under 2016 Credit Agreement | 2016 Credit Agreement
Debt Instrument [Line Items]
Current borrowing capacity					720,000,000
Incremental revolving commitments	$ 25,000,000
Line of Credit
Debt Instrument [Line Items]
Long-term debt					$ 0
WEX Latin America
Debt Instrument [Line Items]
Interest rate during period, percent				27.62%	23.59%
WEX Latin America debt			817,000	$ 817,000	$ 16,242,000
Letter of Credit | Revolving line-of-credit facility under 2016 Credit Agreement | 2016 Credit Agreement
Debt Instrument [Line Items]
Current borrowing capacity					250,000,000
Swingline Loan | Revolving line-of-credit facility under 2016 Credit Agreement | 2016 Credit Agreement
Debt Instrument [Line Items]
Current borrowing capacity					20,000,000
Senior Notes | Notes payable
Debt Instrument [Line Items]
Senior notes			$ 400,000,000	$ 400,000,000	$ 400,000,000
Interest rate, stated percentage			4.75%	4.75%	4.75%
Long-term debt			$ 400,000,000	$ 400,000,000	$ 400,000,000
Line of Credit
Debt Instrument [Line Items]
Amounts Available			$ 334,000,000	$ 334,000,000	$ 309,000,000

Financing and Other Debt - Amou

Financing and Other Debt - Amounts Outstanding Under Participation Debt Agreements (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Amounts Available	$ 718,690,000	$ 666,486,000
Loan Participations and Assignments
Debt Instrument [Line Items]
Amounts Available	180,000,000	180,000,000
Amounts Outstanding	44,265,000	114,849,000
Remaining Funding Capacity	$ 135,735,000	$ 65,151,000
Average interest rate	4.47%	4.30%
Short-term Debt | Loan Participations and Assignments
Debt Instrument [Line Items]
Amounts Available	$ 180,000,000	$ 130,000,000
Amounts Outstanding	44,265,000	64,849,000
Remaining Funding Capacity	135,735,000	65,151,000
Long-term Debt | Loan Participations and Assignments
Debt Instrument [Line Items]
Amounts Available	0	50,000,000
Amounts Outstanding	$ 0	$ 50,000,000

Off-Balance Sheet Arrangements

Off-Balance Sheet Arrangements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of factoring receivables	$ 5,000,000,000	$ 1,300,000,000	$ 11,000,000,000
Gain (loss) on sale of factoring receivables	(1,200,000)	(400,000)	(2,900,000)
Operating interest	1,676,000	5,777,000	7,089,000	$ 18,689,000
WEX Europe Services
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of factoring receivables	156,000,000	171,200,000	470,300,000	532,100,000
Gain (loss) on sale of factoring receivables	(800,000)	(1,100,000)	(2,600,000)	(3,500,000)
Amount of transferred receivables in excess of established credit limit	400,000		400,000		$ 200,000
WEX Latin America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain (loss) on sale of factoring receivables	4,800,000	3,200,000	12,000,000
WEX Latin America Securitization Facility | WEX Latin America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of factoring receivables	$ 21,400,000	$ 20,200,000	57,000,000
Equity contributions to investment fund			$ 0
Operating interest				$ 4,400,000

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value and Related Hierarchy Levels (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Assets:
Total investment securities	$ 30,458	$ 24,406
Level 1
Financial Assets:
Executive deferred compensation plan trust	7,661	6,398
Level 2 | Interest rate swaps
Financial Assets:
Derivative asset	2,891	17,994
Liabilities
Interest rate swaps	24,800	0
Money Market Funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	76,004	71,228
Municipal bonds | Level 2
Financial Assets:
Total investment securities	309	404
Asset-backed securities | Level 2
Financial Assets:
Total investment securities	255	279
Mortgage-backed securities | Level 2
Financial Assets:
Total investment securities	177	260
Equity security measured at net asset value | NAV
Financial Assets:
Total investment securities	5,000	0
Fixed-income mutual fund | Level 1
Financial Assets:
Total investment securities	$ 24,717	$ 23,463

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Senior Notes | Estimate of Fair Value Measurement | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 405	$ 392

Redeemable Non-Controlling In_3

Redeemable Non-Controlling Interest - Narrative (Details) - USD ($) $ in Thousands	Mar. 05, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Noncontrolling Interest [Line Items]
Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value		$ 28,459	$ 17,720	$ 0		$ 41,400
Accretion of non-controlling interest		$ (28,459)			$ 0	$ (46,179)	$ 0
Additional Paid-in Capital
Noncontrolling Interest [Line Items]
Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value				$ (41,400)
Discovery Benefits
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling interest	4.90%
Discovery Benefits | Additional Paid-in Capital
Noncontrolling Interest [Line Items]
Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value	$ 41,400
Discovery Benefits | Non–Controlling Interest
Noncontrolling Interest [Line Items]
Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value	$ 41,400
Minimum | Discovery Benefits
Noncontrolling Interest [Line Items]
Call rights, exercise period						5 years
Maximum | Discovery Benefits
Noncontrolling Interest [Line Items]
Call rights, exercise period						7 years

Redeemable Non-Controlling In_4

Redeemable Non-Controlling Interest - Schedule of Redeemable Non-Controlling Interest (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, beginning of period			$ 0		$ 0
Acquisition of Discovery Benefits at fair value					25,757
Establishing redeemable non-controlling interest for WEX Health at carrying value					32,843
Adjustment to redeemable non-controlling interest to reflect WEX Health at fair value	$ 28,459	$ 17,720	$ 0		41,400
Net income attributable to redeemable non-controlling interest					39
Accretion of non-controlling interest	28,459			$ 0	46,179	$ 0
Balance, end of period	$ 146,218				$ 146,218

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	31.10%	27.30%	29.20%	25.80%
Undistributed earnings of certain foreign subsidiaries	$ 76.8		$ 76.8		$ 64.9

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information (Details) $ in Thousands	Sep. 30, 2019USD ($)
Assets
Operating lease ROU assets	$ 69,617
Liabilities
Current operating lease liabilities	12,469
Non-current operating lease liabilities	69,567
Total lease liabilities	$ 82,036

Leases - Schedule of Lease Term

Leases - Schedule of Lease Term and Discount Rate (Details)	Sep. 30, 2019
Leases [Abstract]
Weighted-average remaining operating lease term (in years)	8 years 9 months 18 days
Weighted-average discount rate (as a percent)	4.60%

Leases - Maturities of Lease Pa

Leases - Maturities of Lease Payments (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Remaining 2019	$ 3,958
2020	15,501
2021	14,726
2022	12,888
2023	9,225
2024 and thereafter	44,264
Total lease payments	100,562
Less: Imputed interest	18,526
Total lease liabilities	82,036
Less: Current portion of lease obligations	12,469
Long-term lease obligations	$ 69,567

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Leases [Abstract]
Additional lease not yet commenced, term (in years)	14 years	14 years
Additional lease not yet commenced	$ 30	$ 30
Operating lease cost	$ 4.1	$ 13.1

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 12,234
Right-of-use assets obtained in exchange for lease liabilities:	$ 8,388

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement [Abstract]
Fair value of units awarded	$ 55	$ 34.8

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Assumptions Used to Calculate Fair Value of Stock Options (Details) - Stock Options - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value (in dollars per share)	$ 58.28	$ 51.27
Weighted average expected life (in years)	6 years	6 years
Weighted average exercise price (in dollars per share)	$ 184.81	$ 158.23
Expected stock price volatility (as a percent)	27.21%	27.35%
Weighted average risk–free rate	2.37%	2.69%

Restructuring Activities - Addi

Restructuring Activities - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Employee and Office Closure Costs | Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date	$ 27.1
Severance | Restructuring Plan 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs	$ 2.3

Segment Information - Additiona

Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 30, 2019segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segment Information - Revenue b

Segment Information - Revenue by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Topic 606 revenues	$ 326,873	$ 244,872	$ 907,334	$ 721,411
Total revenues	459,963	386,617	1,283,646	1,111,443
Non-topic 606 revenues	133,090	141,745	376,312	390,032
Interest income	1,676	5,777	7,089	18,689
Fleet Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	152,304	134,664	430,460	395,954
Total revenues	277,526	249,569	777,622	721,346
Non-topic 606 revenues	125,222	114,905	347,162	325,392
Interest income	825	1,092	4,844	3,127
Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	96,535	64,528	256,906	181,381
Total revenues	99,128	82,810	272,126	225,353
Non-topic 606 revenues	2,593	18,282	15,220	43,972
Interest income	402	172	1,209	715
Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	78,034	45,680	219,968	144,076
Total revenues	83,309	54,238	233,898	164,744
Non-topic 606 revenues	5,275	8,558	13,930	20,668
Interest income	449	4,513	1,036	14,847
Payment processing revenue
Segment Reporting Information [Line Items]
Topic 606 revenues	224,756	182,871	626,380	530,063
Payment processing revenue | Fleet Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	125,288	116,023	353,413	335,896
Payment processing revenue | Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	85,128	54,345	222,399	150,411
Payment processing revenue | Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	14,340	12,503	50,568	43,756
Account servicing revenue
Segment Reporting Information [Line Items]
Topic 606 revenues	74,333	42,858	201,002	128,899
Total revenues	109,205	78,748	303,183	236,168
Non-topic 606 revenues	34,872	35,890	102,181	107,269
Account servicing revenue | Fleet Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	7,165	6,920	20,601	20,770
Total revenues	42,037	42,810	122,782	128,039
Non-topic 606 revenues	34,872	35,890	102,181	107,269
Account servicing revenue | Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	10,717	9,120		27,584
Total revenues	10,717	9,120	32,019	27,584
Non-topic 606 revenues	0	0	0	0
Account servicing revenue | Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	56,451	26,818		80,545
Total revenues	56,451	26,818	148,382	80,545
Non-topic 606 revenues	0	0	0	0
Finance fee revenue
Segment Reporting Information [Line Items]
Non-topic 606 revenues	66,382	57,673	175,667	158,107
Finance fee revenue | Fleet Solutions
Segment Reporting Information [Line Items]
Non-topic 606 revenues	65,818	51,644	174,067	140,436
Finance fee revenue | Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Non-topic 606 revenues	645	670	1,498	1,157
Finance fee revenue | Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Non-topic 606 revenues	(81)	5,359	102	16,514
Other revenue
Segment Reporting Information [Line Items]
Topic 606 revenues	27,784	19,143	79,952	62,449
Total revenues	59,620	67,325	178,416	187,105
Non-topic 606 revenues	31,836	48,182	98,464	124,656
Other revenue | Fleet Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	19,851	11,721	56,446	39,288
Total revenues	44,383	39,092	127,360	116,975
Non-topic 606 revenues	24,532	27,371	70,914	77,687
Other revenue | Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	690	1,063	2,488	3,386
Total revenues	2,638	18,675	16,210	46,201
Non-topic 606 revenues	1,948	17,612	13,722	42,815
Other revenue | Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Topic 606 revenues	7,243	6,359	21,018	19,775
Total revenues	12,599	9,558	34,846	23,929
Non-topic 606 revenues	$ 5,356	$ 3,199	$ 13,828	$ 4,154

Segment Information - Reconcili

Segment Information - Reconciliation of Adjusted Operating Income to Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Adjusted operating income	$ 202,131	$ 165,466	$ 533,834	$ 475,768
Stock-based compensation			33,596	24,657
Impairment charge	0	2,424	0	2,424
Operating income	118,311	102,564	281,983	286,847
Financing interest expense	(34,549)	(25,718)	(101,299)	(78,560)
Net foreign currency loss	(16,528)	(1,094)	(13,748)	(27,438)
Net unrealized gains on financial instruments	(5,650)	2,157	(39,078)	18,371
Income before income taxes	61,584	77,909	127,858	199,220
Fleet Solutions
Segment Reporting Information [Line Items]
Adjusted operating income	133,348	112,952	348,900	333,878
Travel and Corporate Solutions
Segment Reporting Information [Line Items]
Adjusted operating income	47,356	39,377	122,581	99,074
Health and Employee Benefit Solutions
Segment Reporting Information [Line Items]
Adjusted operating income	21,427	13,137	62,353	42,816
Segment reconciling items
Segment Reporting Information [Line Items]
Unallocated corporate expenses	17,016	13,414	52,135	42,378
Acquisition-related intangible amortization	42,800	33,439	116,502	103,596
Other acquisition and divestiture related items	7,907	1,536	24,704	2,792
Debt restructuring costs	1,162	317	10,640	3,798
Stock-based compensation	9,522	9,799	34,956	25,659
Restructuring and other costs	5,413	1,973	12,914	8,274
Impairment charge	$ 0	$ 2,424	$ 0	$ 2,424

Supplementary Regulatory Capi_3

Supplementary Regulatory Capital Disclosure (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Total Capital to risk-weighted assets, Actual Amount	$ 361,900	$ 323,178
Total Capital to risk-weighted assets, Actual, Ratio	12.71%	12.82%
Total Capital to risk-weighted assets, Minimum for Capital Adequacy Purposes Amount	$ 227,829	$ 201,749
Total Capital to risk-weighted assets, Minimum for Capital Adequacy Purposes, Ratio	8.00%	8.00%
Total Capital to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 284,786	$ 252,186
Total Capital to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital to average assets, Actual Amount	$ 346,875	$ 305,734
Tier 1 Capital to average assets, Actual, Ratio	11.13%	10.88%
Tier 1 Capital to average assets, Minimum for Capital Adequacy Purposes Amount	$ 124,630	$ 112,401
Tier 1 Capital to average assets, Minimum for Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital to average assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 155,787	$ 140,501
Tier 1 Capital to average assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provision, Ratio	5.00%	5.00%
Common equity to risk-weighted assets, Actual Amount	$ 346,875	$ 305,734
Common equity to risk-weighted assets, Actual, Ratio	12.18%	12.12%
Common equity to risk-weighted assets, Minimum for Capital Adequacy Purposes Amount	$ 128,154	$ 113,484
Common equity to risk-weighted assets, Minimum for Capital Adequacy Purposes, Ratio	4.50%	4.50%
Common equity to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 185,111	$ 163,921
Common equity to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier 1 Capital to risk-weighted assets, Actual Amount	$ 346,875	$ 305,734
Tier 1 Capital to risk-weighted assets, Actual, Ratio	12.18%	12.12%
Tier 1 Capital to risk-weighted assets, Minimum for Capital Adequacy Purposes Amount	$ 170,872	$ 151,312
Tier 1 Capital to risk-weighted assets, Minimum for Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 Capital to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 227,829	$ 201,749
Tier 1 capital to risk-weighted assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions Amount, Ratio	8.00%	8.00%

Uncategorized Items - wex093020

Label	Element	Value
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 1,630,738,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	638,000	[1]
Treasury Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ (172,342,000)
Common Stock [Member]
Shares, Issued	us-gaap_SharesIssued	47,352,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 473,000
AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(89,230,000)
Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	9,220,000
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	569,319,000
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	1,313,298,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 638,000	[1]
[1]	Includes the impact of the Company’s modified retrospective adoption as part of Topic 606.