SS&C Technologies (SSNC) 10-K 1 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 22, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	SSNC
Entity Registrant Name	SS&C Technologies Holdings Inc
Entity Central Index Key	1,402,436
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		251,626,214
Entity Public Float			$ 10,769,794,898

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 166,700,000	$ 64,100,000
Funds receivable and funds held on behalf of clients	1,014,700,000
Accounts receivable, net of allowance for doubtful accounts of $9.4 and $6.7, respectively (Note 3)	681,700,000	243,900,000
Contract asset	18,500,000
Prepaid expenses and other current assets	154,500,000	38,700,000
Prepaid income taxes	5,600,000	12,100,000
Restricted cash and cash equivalents	6,400,000	600,000
Total current assets	2,048,100,000	359,400,000
Property, plant and equipment, net (Note 4)	553,200,000	101,000,000
Investments (Note 5)	190,500,000	0
Unconsolidated affiliates (Note 6)	239,300,000
Deferred income taxes	4,800,000	2,300,000
Contract asset	31,500,000
Goodwill (Note 8)	7,858,000,000	3,707,800,000
Intangible and other assets, net of accumulated amortization of $1,360.2 and $954.0, respectively (Note 8)	5,182,100,000	1,369,000,000
Total assets	16,107,500,000	5,539,500,000
Current liabilities:
Current portion of long-term debt (Note 9)	87,500,000	37,900,000
Client funds obligations	1,014,700,000
Accounts payable	41,400,000	27,100,000
Income taxes payable	11,100,000	6,000,000
Accrued employee compensation and benefits	322,000,000	96,000,000
Interest payable	200,000	16,400,000
Other accrued expenses	199,200,000	55,600,000
Deferred revenue	245,700,000	204,600,000
Total current liabilities	1,921,800,000	443,600,000
Long-term debt, net of current portion (Note 9)	8,168,500,000	2,007,300,000
Other long-term liabilities	235,500,000	118,700,000
Deferred income taxes	1,201,700,000	283,500,000
Total liabilities	11,527,500,000	2,853,100,000
Commitments and contingencies (Note 16)
Stockholders’ equity (Note 10):
Preferred stock, $0.01 par value per share, 5.0 million shares authorized; no shares issued
Common stock	2,500,000	2,100,000
Additional paid-in capital	4,091,400,000	2,018,100,000
Accumulated other comprehensive loss	(343,000,000)	(82,700,000)
Retained earnings	847,100,000	766,900,000
Stockholders' equity before treasury stock	4,598,000,000	2,704,400,000
Less: cost of common stock in treasury, 1.6 million shares	(18,000,000)	(18,000,000)
Total stockholders’ equity	4,580,000,000	2,686,400,000
Total liabilities and stockholders’ equity	16,107,500,000	5,539,500,000
Class A Non-Voting Common Stock [Member]
Stockholders’ equity (Note 10):
Common stock

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Allowance for doubtful accounts receivable	$ 9.4	$ 6.7
Accumulated amortization of finite-lived intangible assets	$ 1,360.2	$ 954
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	252,400,000	208,100,000
Common stock, shares outstanding	250,800,000	206,500,000
Treasury stock, shares	1,600,000	1,600,000
Class A Non-Voting Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	0	0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Total revenues	$ 3,421.1	$ 1,675.3	$ 1,481.4
Cost of revenues:
Total cost of revenues	2,051.1	886.4	800.5
Gross profit	1,370	788.9	680.9
Operating expenses:
Selling and marketing	211	118.5	117.1
Research and development	318.2	153.3	152.7
General and administrative	313.9	119.6	122.5
Transaction expenses	97.8	0.6
Total operating expenses	940.9	392	392.3
Operating income	429.1	396.9	288.6
Interest income	9.1	1.2	1.5
Interest expense	(280.1)	(108.6)	(129.9)
Other income (expense), net	8.2	(4.5)	3.4
Equity in earnings of unconsolidated affiliates, net	2.1
Loss on extinguishment of debt, net	(43.3)	(2.3)
Income before income taxes	125.1	282.7	163.6
Provision (benefit) for income taxes (Note 15)	21.9	(46.2)	32.6
Net income	$ 103.2	$ 328.9	$ 131
Basic earnings per share	$ 0.44	$ 1.60	$ 0.65
Diluted earnings per share	$ 0.42	$ 1.55	$ 0.64
Basic weighted average number of common shares outstanding	232.5	204.9	200.3
Diluted weighted average number of common and common equivalent shares outstanding	243.7	211.6	205.8
Cash dividends declared and paid per common share	$ 0.30	$ 0.265	$ 0.25
Net income	$ 103.2	$ 328.9	$ 131
Other comprehensive (loss) income, net of tax:
Foreign currency exchange translation adjustment	(260.3)	56.4	(55.9)
Total comprehensive (loss) income, net of tax	(260.3)	56.4	(55.9)
Comprehensive (loss) income	(157.1)	385.3	75.1
Software-enabled Services [Member]
Revenues:
Total revenues	2,798.9	1,114	956.8
Cost of revenues:
Total cost of revenues	1,753	628.1	544.4
License, Maintenance and Related [Member]
Revenues:
Total revenues	622.2	561.3	524.6
Cost of revenues:
Total cost of revenues	$ 298.1	$ 258.3	$ 256.1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flow from operating activities:
Net income	$ 103.2	$ 328.9	$ 131
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	518.5	237.2	228.7
Equity in earnings of unconsolidated affiliates, net	(2.1)
Cash distributions received from unconsolidated affiliates	4.2
Stock-based compensation expense	96.9	41.5	50.5
Income tax benefit related to exercise of stock options			(46.2)
Net unrealized gains on investments	(0.9)
Amortization and write-offs of loan origination costs and original issue discounts	13.6	10.5	10.7
Loss on extinguishment of debt, net	43.3	2.3
Loss on sale or disposition of property and equipment	0.3	0.9	0.1
Deferred income taxes	(105.8)	(152)	(47.8)
Provision for doubtful accounts	4	2.4	3.5
Changes in operating assets and liabilities, excluding effects from acquisitions:
Accounts receivable	50.4	(1.8)	(10.9)
Prepaid expenses and other assets	31.9	(7.3)	(2.8)
Contract assets	(22.3)
Accounts payable	(91)	13.8	(1.3)
Accrued expenses	(2.9)	(14.8)	20.7
Income taxes prepaid and payable	(17.4)	45.6	65.1
Deferred revenue	16.2	(35.4)	17.1
Net cash provided by operating activities	640.1	471.8	418.4
Cash flow from investing activities:
Additions to property and equipment	(33.6)	(35.5)	(27.9)
Proceeds from sale of property and equipment	9.7
Cash paid for business acquisitions, net of cash acquired	(7,066.7)	(17.4)	(457.5)
Additions to capitalized software	(55.5)	(10.4)	(9.6)
Investments in securities	(16.4)		(1)
Receipts from collections of loans made	7
Proceeds from sales / maturities of investments	52.9
Net cash used in investing activities	(7,102.6)	(63.3)	(496)
Cash flow from financing activities:
Cash received from debt borrowings, net of original issue discount	8,744	45	120
Repayments of debt and acquired debt	(3,141)	(512.5)	(383.5)
Net increase in client funds obligations	604.8
Proceeds from exercise of stock options	84.9	60.2	39.2
Withholding taxes paid related to equity award net share settlement	(17.5)	(4.8)	(7.4)
Income tax benefit related to exercise of stock options			46.2
Fees paid for debt extinguishment and refinancing activities	(86.4)	(1.5)	(0.5)
Proceeds from common stock issuance, net	1,399.1
Dividends paid on common stock	(70.9)	(54.4)	(50.1)
Net cash provided by (used in) financing activities	7,517	(468)	(236.1)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(5.9)	4.5	(3.6)
Net increase (decrease) in cash, cash equivalents and restricted cash	1,048.6	(55)	(317.3)
Cash, cash equivalents and restricted cash, beginning of period	64.7	119.7	437
Cash, cash equivalents and restricted cash and cash equivalents, end of period	1,113.3	64.7	119.7
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents:
Cash and cash equivalents	166.7	64.1	117.6
Restricted cash and cash equivalents	6.4	0.6	2.1
Funds receivable and funds held on behalf of clients	940.2
Cash and cash equivalents and restricted cash	1,113.3	64.7	119.7
Supplemental disclosure of cash paid for:
Interest	249.8	102.7	126.7
Income taxes, net of refunds	143.4	67.6	8.8
Supplemental disclosure of non-cash investing activities:
Property and equipment acquired through tenant improvement allowances	$ 0.7	$ 10.3	$ 2.8

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Class A Non-Voting Common Stock [Member]
Beginning balance at Dec. 31, 2015	$ 2,105.4	$ 1.9	$ 1,793.2	$ 411.5	$ (83.2)	$ (18)
Beginning balance, shares at Dec. 31, 2015		193,100,000					2,700,000
Net income	131			131
Foreign exchange translation adjustment	(55.9)				(55.9)
Stock-based compensation expense	50.2		50.2
Exercise of options, net of withholding taxes	31.8	$ 0.1	31.7
Exercise of options, net of withholding taxes, shares		6,100,000
Conversion of Class A common stock	0.1	$ 0.1
Conversion of Class A common stock, shares		5,400,000					(2,700,000)
Income tax benefit related to exercise of stock options	46.2		46.2
Cash dividends declared - [$-value] per share (Note 10)	(50.1)			(50.1)
Ending balance at Dec. 31, 2016	2,258.7	$ 2.1	1,921.3	492.4	(139.1)	(18)
Ending balance, shares at Dec. 31, 2016		204,600,000
Net income	328.9			328.9
Foreign exchange translation adjustment	56.4				56.4
Stock-based compensation expense	41.4		41.4
Exercise of options, net of withholding taxes	55.4		55.4
Exercise of options, net of withholding taxes, shares		3,500,000
Cash dividends declared - [$-value] per share (Note 10)	(54.4)			(54.4)
Ending balance at Dec. 31, 2017	$ 2,686.4	$ 2.1	2,018.1	766.9	(82.7)	(18)
Ending balance, shares at Dec. 31, 2017	208,100,000	208,100,000					0
Net income	$ 103.2			103.2
Foreign exchange translation adjustment	(260.3)				(260.3)
Stock-based compensation expense	91.1		91.1
Exercise of options, net of withholding taxes	67.4		67.4
Exercise of options, net of withholding taxes, shares		4,100,000
Non-cash purchase price consideration (Note 7)	48.1		48.1
Cumulative effect of accounting change (Note 11)	47.9			47.9
Issuance of common stock	1,867.1	$ 0.4	1,866.7
Issuance of common stock, shares		40,200,000
Cash dividends declared - [$-value] per share (Note 10)	(70.9)			(70.9)
Ending balance at Dec. 31, 2018	$ 4,580	$ 2.5	$ 4,091.4	$ 847.1	$ (343)	$ (18)
Ending balance, shares at Dec. 31, 2018	252,400,000	252,400,000					0

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Stockholders Equity [Abstract]
Cash dividends declared per share	$ 0.30	$ 0.265	$ 0.25

Organization

Organization	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	Note 1—Organization We provide software products and software-enabled services to the financial services and healthcare industries, primarily in North America. We also have operations in Europe, Asia, Australia, South America and Africa. Our portfolio of products and software-enabled services allows our financial services clients to automate and integrate front-office functions such as trading and modeling, middle-office functions such as portfolio management and reporting, and back-office functions such as accounting, performance measurement, reconciliation, reporting, processing and clearing. Our products and software-enabled services in the healthcare industry support claims adjudication benefit management, care management, and business intelligence services. We provide our products and related services in the following vertical markets within the financial services and healthcare industries: 1. Institutional asset and wealth management; 2. Alternative investment management; 3. H ealthcare 4. Brokerage 5. R etirement 6. F inancial advisory 7. F inancial institutions

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2—Summary of Significant Accounting Policies Use of Estimates The preparation of the Consolidated Financial Statements in conformity with generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used for, but not limited to, collectability of accounts receivable, valuation of non-marketable securities, costs to complete certain contracts, valuation of acquired assets and liabilities, valuation of stock options, income tax accruals and the value of deferred tax assets and liabilities. Estimates are also used to determine the remaining economic lives and carrying value of fixed assets, goodwill and intangible assets. Actual results could differ from those estimates. Principles of Consolidation The Consolidated Financial Statements include the accounts of us and our subsidiaries. All significant accounts, transactions and profits between the consolidated companies have been eliminated in consolidation. We consolidate any entity in which we have a controlling financial interest. Under the voting interest model, generally the investor that has voting control (usually more than 50% of an entity’s voting interests) consolidates the entity. Under the variable interest entity (“VIE”) model, the party that has the power to direct the entity’s most significant economic activities and the ability to participate in the entity’s economics consolidates the entity. An entity is considered a VIE if it possesses one of the following characteristics: 1) the entity is thinly capitalized; 2) residual equity holders do not control the entity; 3) equity holders are shielded from economic losses; 4) equity holders do not participate fully in an entity’s residual economics; and 5) the entity was established with non-substantive voting interests. Our investments in private equity funds meet the definition of a VIE; however, the private equity fund investments are not consolidated as we do not have the power to direct the entities’ most significant economic activities. We are the lessee in a series of operating leases covering a large portion of our Kansas City, Missouri-based leased office facilities. The lessors are generally joint ventures (in which we have 50% ownership) that have been established specifically to purchase, finance and engage in leasing activities with the joint venture partners and unrelated third parties. Our analysis of our real estate joint ventures for all periods presented indicate that none qualified as a VIE and, accordingly, they have not been consolidated. Unconsolidated investments in entities over which we do not have control but have the ability to exercise influence over operating and financial policies, if any, are accounted for under the equity method of accounting. Earnings and losses from such investments are recorded on a pre-tax basis, if any. Revenue Recognition We account for the recognition of our revenue in accordance with the relevant accounting literature, primarily Accounting Standards Update 2014-09, Revenue from Contracts with Customers (ASC 606). Software-enabled Services Revenue We primarily offer software-enabled outsourcing services in which we utilize our own software to offer comprehensive fund administration services for alternative investment managers, including fund manager services, transfer agency services, funds-of-funds services, tax processing and accounting. We also use our own software applications to provide healthcare organizations a variety of medical and pharmacy benefit solutions to satisfy their information processing, quality of care, cost management concerns and payment integrity programs. Our healthcare solutions include claims adjudication, benefit management, care management, business intelligence and other ancillary services. We also offer subscription-based on-demand software applications that are managed and hosted at our facilities. The software-enabled services arrangements provide an alternative for clients who do not wish to install, run and maintain complicated financial software. Under these arrangements, the client does not have the right to take possession of the software, rather, we agree to provide access to our applications, remote use of our equipment to process transactions, access to client’s data stored on our equipment, and connectivity between our environment and the client’s computing systems. Software-enabled services are generally provided under contracts with initial terms of one to five years that require monthly or quarterly payments, and are subject to automatic annual renewal at the end of the initial term unless terminated by either party. In software-enabled services arrangements, the arrangement is a single performance obligation or a stand-ready performance obligation, which in either case is comprised of a series of distinct services that are substantially the same and have the same pattern of transfer to the customer (i.e. distinct days or months of service). We apply a measure of progress (typically time-based) to any fixed consideration and allocate variable consideration to the distinct periods of service based on usage or summarization of account information. These variable payments relate specifically to our efforts to perform the services in the period in which the fee applies. This variability is solely attributed to and resolved as a result of the transfer of these services; these fees are independent of the transfer of past or future goods or services. These fees meet the allocation objective of ASC 606 because they represent the amount of consideration we are entitled to for these services. For our software-enabled services contracts which are cancelable with 90 days’ notice or meet the allocation objective for series performance obligations under ASC 606, we have not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or when we expect to recognize this revenue. License, Maintenance and Related Revenue Agreements We generate revenues in the form of software license fees and related maintenance and services fees. License fees include perpetual license fees and term license fees that differ mainly in the duration over which the customer benefits from the software. Maintenance and services primarily consist of fees for maintenance services (including support and unspecified upgrades and enhancements when and if they are available) and, in some cases, professional services which focus on both deployment and training our customers to fully leverage the use of our products. Under ASC 606, we identify a contract with a customer, we identify the performance obligations in the contract, we determine the transaction price, we allocate the transaction price to each performance obligation in the contract and recognize revenues when (or as) we satisfy a performance obligation. Software license performance obligations are functional intellectual property that are distinct as the user can benefit from the software on its own as defined under ASC 606. Software license revenues are recognized at the point of time when the software license has been delivered. Term license fees are typically due in annual installments at the beginning of each annual period and we record a contract asset for amounts recognized as revenue in excess of amounts billed. We recognize revenues from maintenance ratably over the term of the underlying maintenance contract term because we transfer control evenly by providing a stand-ready service Revenues from professional services consist mostly of services provided on a time and materials basis. The performance obligations are satisfied, and revenues are recognized, over time as the services are provided. In contracts with multiple performance obligations, we account for individual performance obligations separately if they are distinct. We allocate the transaction price to each performance obligation based on our relative standalone selling price out of total consideration of the contract. Standalone selling price is determined utilizing observable prices to the extent available. If the standalone selling price for a performance obligation is not directly observable, we estimate it maximizing the use of observable inputs. For maintenance and support, we determine the standalone selling price based on the price at which we separately sell a renewal contract and the economic relationship between licenses and maintenance. We primarily determine the standalone selling price for sales of licenses using the residual approach. For professional services, we determine the standalone selling prices based on the price at which we separately sell those services. We occasionally enter into license agreements requiring significant customization of our software that are not material to our results of operations. We account for the license and professional service fees under these agreements as a single performance obligation, recognized over time using an input method during the development of the license. This method requires estimates to be made for costs to complete the agreement utilizing an estimate of development man-hours remaining. Revenue is recognized each period based on the hours incurred to date compared to the total hours expected to complete the project. Due to uncertainties inherent in the estimation process, it is at least reasonably possible that completion costs will be revised. Such revisions are recognized in the period in which the revisions are determined. Provisions for estimated losses on uncompleted contracts are determined on a contract-by-contract basis, and are made in the period in which such losses are first estimated or determined. We do not account for significant financing components if the period between when we transfer the promised product or service to the client and when the client pays for that product or service will be one year or less. We record revenue net of any taxes assessed by governmental authorities. Accounts Receivable, net is primarily comprised of billed and unbilled receivables for which we have an unconditional right to consideration, net of an allowance for doubtful accounts. Pre-adoption of ASC 606 We adopted ASC 606 using the modified retrospective method and as such, comparative results for the years ended December 31, 2017 and 2016 were not retrospectively adjusted. For the years ended December 31, 2017 and 2016, we recognized revenue under ASC 605 and ASC 985. Specifically, the software-enabled services revenues were recognized on a monthly basis as the services were provided, when persuasive evidence of an arrangement existed, the price was fixed or determinable and collectability was reasonably assured. Maintenance revenues were recognized ratably over the term of the maintenance agreement. Term license arrangements, many of which included bundled maintenance services, did not have vendor-specific objective evidence for the maintenance element and therefore the total term license fee was recognized ratably over the contractual term of the arrangement. We also recognized perpetual license revenues generally upon delivery of each of the related products and receipt of a signed contract, provided that collection was probable and all other revenue recognition criteria was met. Professional services revenues were generally recognized over the period during which the services were performed. Costs of Revenues Costs of revenues include all costs, including depreciation and amortization, incurred to produce revenues. Incremental costs of obtaining a contract (e.g., sales commissions) are capitalized and amortized on a basis consistent with the pattern of transfer of goods or services to the customer to which the asset relates over the expected customer relationship period if we expect to recover those costs. Prior to the adoption of ASC 606, we previously expensed these costs over the length of the initial contract excluding any renewals. The expected customer relationship period is determined based on average historical customer relationship periods, including expected renewals. Expected renewal periods are only included in the expected customer relationship period if commission amounts paid upon renewal are not commensurate with amounts paid on the initial contract. Incremental costs of obtaining a contract include only those costs we incur to obtain a contract that we would not have incurred if the contract had not been obtained. We have determined that certain commissions programs meet the requirements to be capitalized. Certain sales commissions associated with multi-year contracts are subject to an employee service requirement. As an action other than each party approving the contract is required to trigger payment of these sales commissions, they are not considered incremental costs to obtain a contract and are expensed as incurred. We expense sales commissions as incurred when the amortization period would have been one year or less. Research and Development Research and development costs associated with computer software are charged to expense as incurred. Capitalization of internally developed computer software costs in the case of software to be sold begins upon the establishment of technological feasibility based on a working model. Capitalization of internally developed computer software costs in the case of internal use software begins when management authorizes and commits funding to a project and the preliminary design stage has been completed. Our policy is to amortize these costs upon a product’s general release to the client. Amortization of capitalized software costs is calculated by the greater of (a) the ratio that current gross revenues for a product bear to the total of current and anticipated future gross revenues for that product or (b) the straight-line method over the remaining estimated economic life of the product, including the period being reported on, typically two to five years. It is reasonably possible that those estimates of anticipated future gross revenues, the remaining estimated economic life of the product, or both could be reduced significantly due to competitive pressures. Stock-based Compensation Using the fair value recognition provisions of relevant accounting literature, stock-based compensation cost is measured at the grant date based on the estimated fair value of the award and is recognized as expense over the appropriate service period. Determining the fair value of stock-based awards requires considerable judgment, including estimating the expected term of stock options and the expected volatility of our stock price. Differences between actual results and these estimates could have a material effect on our financial results. Forfeitures are accounted for as they occur. A deferred income tax asset is recorded over the vesting period as stock compensation expense is recorded for non-qualified option awards. The realizability of the deferred tax asset is ultimately based on the actual value of the stock-based award upon exercise. If the actual value is lower than the fair value determined on the date of grant, then there would be an income tax expense for the portion of the deferred tax asset that is not realizable. Transaction Expenses Transaction expenses are those costs that are directly related to our acquisition of DST Systems, Inc. (“DST”), as described in Note 7, “Acquisitions.” Transaction expenses consist primarily of certain costs associated with the amendment and restatement of our Credit Agreement, as described in Note 9, “Debt”, investment banker advisory fees, legal fees and other fees. Income Taxes We account for income taxes in accordance with the relevant accounting literature. An asset and liability approach is used to recognize deferred tax assets and liabilities for the future tax consequences of items that are recognized in our financial statements and tax returns in different years. A valuation allowance is established against net deferred tax assets if, based on the weight of available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. We account for uncertain tax positions using a two-step approach. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. We consider many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. The Tax Act added a new minimum tax on global intangible low-taxed income (“GILTI”), for which we have elected to factor such amounts into our measurement of deferred taxes under U.S. GAAP. We recorded a deferred tax liability related to GILTI of $27.4 million and $6.7 million at December 31, 2018 and December 31, 2017, respectively. Income Tax Accounting Implications of the Tax Cuts and Jobs Act Cash and Cash Equivalents We consider all highly liquid marketable securities with original maturities of three months or less at the date of acquisition to be cash equivalents. Funds receivable and funds held on behalf of clients We hold client funds on behalf of transfer agency clients and pharmacy processing clients in connection with providing our data processing services. End-of-day available client bank balances for full service mutual fund transfer agency clients are invested overnight in credit quality money market funds. Invested balances are returned to the full service mutual fund transfer agency clients’ accounts the following business day. Funds received from clients for the payment of pharmacy claims incurred by its members are invested in credit quality money market funds and certificates of deposit until the claims are paid. Client funding receivables represent amounts due to us for pharmacy claims paid in advance of receiving client funding and for pharmacy claims processed for which client funding requests have not been made. Funds held on behalf of clients in the form of cash, cash equivalents and certificates of deposit with a maturity of less than twelve months are included in Funds receivable and funds held on behalf of clients in the Consolidated Balance Sheet. Funds held on behalf of clients in the form of certificates of deposit with a maturity of greater than twelve months are classified as Investments in the Consolidated Balance Sheet. All funds held on behalf of clients represent assets that are restricted for use. We have included funds held on behalf of clients that meet the definition of restricted cash and restricted cash equivalents in the beginning and end of period balances in the Consolidated Statements of Cash Flows. Cash inflows and outflows related to investment of funds held on behalf of clients are reported on a gross basis as “Investments in securities” and “Proceeds from sales / maturities of investments” in the investing section of the Consolidated Statements of Cash Flows. Client funds obligations Client funds obligations represent funds owed to full service mutual fund transfer agency clients for cash balances invested overnight, and our contractual obligations to satisfy client pharmacy claim obligations that are recorded on the balance sheet when incurred, generally after we have processed a claim on behalf of its pharmacy clients. Restricted Cash Restricted cash primarily includes monies held by a bank as security for letters of credit issued due to lease requirements for office space. The letters of credit are expected to be renewed within the next twelve months, and as such, the restricted cash is classified as a current asset on the Consolidated Balance Sheets. Investments and unconsolidated affiliates We hold various investments, including investments in marketable securities, non-marketable securities, and partnership interests in private equity funds, joint ventures and other similar entities. The equity method of accounting is used for investments in entities, partnerships and similar interests (including investments in private equity funds where we are a limited partner and hold a greater than 5% partnership interest in the fund) in which we have significant influence but do not control. Under the equity method, we recognize income or losses from our pro-rata share of these unconsolidated affiliates’ net income or loss, which changes the carrying value of the investment of the unconsolidated affiliate. We measure equity investments in marketable securities, seed capital investments and other investments, other than those accounted for under the equity method of accounting or those that result in consolidation of the investee, at fair value, with changes in the fair value recognized in earnings. We use net asset value as a practical expedient for the fair value of partnership interests in private equity funds that are not accounted for under the equity method of accounting. Investments in non-marketable equity securities that do not have readily determinable fair values and do not qualify for the practical expedient to measure the investment using a net asset value per share are recorded using the measurement alternative in ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities We have certain investments in unconsolidated affiliates accounted for under the equity method of accounting in which our carrying value exceeds the proportionate share of net assets of the unconsolidated affiliate. The total investment in unconsolidated affiliates, including basis differences, is included in Unconsolidated affiliates on the Consolidated Balance Sheet. We record our proportionate share of the results of the unconsolidated affiliates and amortization expense related to basis differences in Equity in earnings of unconsolidated affiliates, net on the Consolidated Statement of Comprehensive (Loss) Income. Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation of property, plant and equipment is calculated using a combination of straight-line and accelerated methods over the estimated useful lives of the assets as follows: Description Useful Life Land — Buildings and improvements 40 years Equipment and software 3-5 years Furniture and fixtures 7-10 years Leasehold improvements Shorter of lease term or estimated useful life Maintenance and repairs are expensed as incurred. The costs of sold or retired assets are removed from the related asset and accumulated depreciation accounts and any gain or loss is included in the Consolidated Statements of Comprehensive (Loss) Income. Goodwill and Intangible Assets We test goodwill annually for impairment as of December 31 st Customer relationships, completed technology, trade names and other identifiable intangible assets are amortized over lives ranging from two to 17 years based on the ratio that cash flows for the intangible asset bear to the total of expected future cash flows for the intangible asset. Impairment of Long-Lived Assets We evaluate the recoverability of our long-lived assets when there is evidence that events or changes in circumstances have made recovery of the carrying value of the asset or asset group unlikely. An impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset or asset group. We have identified no such impairment losses in the years ended December 31, 2018 and 2017. Concentration of Credit Risk Financial instruments, which potentially subject us to concentrations of credit risk, consist principally of cash, cash equivalents, marketable securities, and trade receivables. We have cash investment policies that limit investments to investment grade securities. Concentrations of credit risk, with respect to trade receivables, are limited due to the fact that our client base is highly diversified. As of December 31, 2018 and 2017, we had no significant concentrations of credit. International Operations and Foreign Currency The functional currency of each foreign subsidiary is generally the local currency. Accordingly, assets and liabilities of foreign subsidiaries are translated to U.S. dollars at period-end exchange rates, and capital stock accounts are translated at historical rates. Revenues and expenses are translated using the average rates during the period. The resulting translation adjustments are excluded from net earnings and accumulated as a separate component of stockholders’ equity. Foreign currency transaction gains and losses are included within other income (expense) in the Consolidated Statements of Comprehensive (Loss) Income in the periods in which they occur. Comprehensive (Loss) Income Our comprehensive (loss) income consists of net income and foreign currency translation adjustments, which are presented in the Consolidated Statement of Comprehensive (Loss) Income, net of tax and reclassifications to earnings. The accumulated balance of other comprehensive (loss) income is reported separately from retained earnings and additional paid-in capital in the equity section of the Consolidated Balance Sheets. Total comprehensive (loss) income consists of net income and other accumulated comprehensive (loss) income disclosed in the equity section of the Consolidated Balance Sheets. Treasury Stock Treasury stock purchases are accounted for under the cost method and are included as a deduction from equity in the Stockholders’ Equity section of the Consolidated Balance Sheets. Under the cost method, the price paid for the stock is charged to the treasury stock account. Contingencies Loss contingencies from legal proceedings and claims may occur from government investigations, shareholder lawsuits, contractual claims, tax and other matters. Accruals are recognized when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. Gain contingencies (including contingent proceeds related to business divestitures) are not recognized until realized. Legal fees are expensed as incurred. Recently Adopted Accounting Pronouncements In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-15, Classification of Certain Cash Receipts and Cash Payments In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606) Recent Accounting Pronouncements Not Yet Effective In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) recognize the majority of our operating lease commitments as operating lease liabilities and assets upon adoption, which will result in an increase in the assets and liabilities recorded on our Consolidated Balance Sheet, but will not have a material impact on our Consolidated . The new standard provides for a number of optional practical expedients in transition. We will elect the practical expedients, which permit us to not reassess prior conclusions about lease identification, lease classification and initial direct costs under the new standard. We do not expect to elect the “use-of hindsight” practical expedient to determine the lease term or in assessing the likelihood that a lease purchase option will be exercised. The new standard also provides practical expedients for an entity’s ongoing accounting. We currently expect to elect the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we will not recognize right-of-use right-of-use right-of-use In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments

Accounts Receivable, Net

Accounts Receivable, Net	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Accounts Receivable, Net	Note 3—Accounts Receivable, net Accounts receivable are as follows (in millions): December 31, 2018 2017 Accounts receivable $ 516.4 $ 179.0 Unbilled accounts receivable 174.7 71.6 Allowance for doubtful accounts (9.4 ) (6.7 ) Total accounts receivable, net $ 681.7 $ 243.9 The following table represents the activity for the allowance for doubtful accounts (in millions): Year Ended December 31, 2018 2017 2016 Balance at beginning of period $ 6.7 $ 5.9 $ 3.0 Charge to costs and expenses 4.0 2.4 3.5 Write-offs, net of recoveries (1.3 ) (1.8 ) (0.4 ) Other adjustments 0.0 0.2 (0.2 ) Balance at end of period $ 9.4 $ 6.7 $ 5.9 Management establishes the allowance for doubtful accounts based on historical bad debt experience. In addition, management analyzes client accounts, client concentrations, client creditworthiness, current economic trends and changes in the client’s payment terms when evaluating the adequacy of the allowance for doubtful accounts.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Property, Plant and Equipment, Net	Note 4—Property, plant and equipment, net Property, plant and equipment and the related accumulated depreciation are as follows (in millions): December 31, 2018 2017 Land $ 54.8 $ 2.7 Building and improvements 309.5 59.9 Equipment, furniture, and fixtures 384.7 138.8 749.0 201.4 Less: accumulated depreciation and amortization (195.8 ) (100.4 ) Total property, plant and equipment, net $ 553.2 $ 101.0 Depreciation expense for the years ended December 31, 2018, 2017 and 2016 was $100.1 million, $25.9 million and $23.7 million, respectively.

Investments

Investments	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Investments	Note 5—Investments Investments are as follows (in millions): December 31, 2018 Partnership interests in private equity funds $ 102.1 Marketable equity securities 32.6 Non-marketable equity securities 45.0 Seed capital investments 10.3 Other investments 0.5 Total investments $ 190.5 We had $190.5 million of investments as of December 31, 2018 as compared to no investments as of December 31, 2017. The increase in investments was the result of acquiring the net assets of DST in the second quarter of 2018. Realized and unrealized gains and losses for our equity securities are as follows (in millions): Year Ended December 31, 2018 Unrealized losses on equity securities held as of the end of the period $ (4.5 ) Realized gains for equity securities sold during the period 0.9 Total losses recognized in other income, net $ (3.6 ) Fair Value Measurement Authoritative accounting guidance on fair value measurements establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions. As of December 31, 2018, we held certain investment assets and certain liabilities that are required to be measured at fair value on a recurring basis. These investments include money market funds, marketable equity securities and seed capital investments each of which determines fair value using quoted prices in active markets. Accordingly, the fair value measurements of these investments have been classified as Level 1 in the tables below. Investments for which we elected net asset value as a practical expedient for fair value and investments measured using the fair value measurement alternative are excluded from the table below. Fair value for deferred compensation liabilities that are credited with deemed gains or losses of the underlying hypothetical investments, primarily equity securities, have been classified as Level 1 in the tables below. We have foreign currency derivative instruments that are required to be reported at fair value. Fair value for the derivative instruments was determined using inputs from quoted prices for similar assets and liabilities in active markets that are directly or indirectly observable. Accordingly, the derivative instruments have been classified as Level 2 in the tables below. The following table present assets and liabilities measured at fair value on a recurring basis (in millions): Fair Value Measurements at Reporting Date Using December 31, 2018 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 558.0 $ 558.0 $ — $ — Marketable equity securities (2) 32.6 32.6 — — Seed capital investments (2) 10.3 10.3 — — Deferred compensation liabilities (3) (23.3 ) (23.3 ) — — Derivative instruments (4) (0.3 ) — (0.3 ) — Total $ 577.3 $ 577.6 $ (0.3 ) $ — _____________________________________________________ (1) Included in Cash and cash equivalents and Funds receivable and funds held on behalf of clients on the Consolidated Balance Sheet. (2) Included in Investments on the Consolidated Balance Sheet. (3) Included in Other long-term liabilities on the Consolidated Balance Sheet. (4) Included in Other accrued expenses on the Consolidated Balance Sheet. We have not become aware of any information indicative of fair value impairments or adjustments to the carrying value of our non-marketable equity securities for the year ended December 31, 2018. We have partnership interests in various private equity funds that are not included in the table above. Our investments in private equity funds were $102.1 million at December 31, 2018, of which $95.2 million were measured using net asset value as a practical expedient for fair value and $6.9 million were accounted for under the equity method of accounting. The investments in private equity funds represent underlying investments in domestic and international markets across various industry sectors. At December 31, 2018, one of our investments in private equity funds, representing 77% of the total value of the private equity fund investments, was primarily invested in the energy sector and real estate. We have no management rights associated with our partnership interests in this fund and withdrawals from this fund are subject to general partner consent. This fund has a termination date in 2019 with an optional two-year extension at the discretion of the general partner. We expect to receive distributions from this fund upon liquidation of the underlying investments over the next several years, however the exact timing of the distributions is unknown. We have no unfunded commitments related to this fund. Future capital commitments related to our other private equity fund investments were approximately $1.9 million as of December 31, 2018. Generally, our investments in private equity funds are non-transferable or are subject to long holding periods, and withdrawals from the private equity firm partnerships are typically not permitted. Even when transfer restrictions do not apply, there is generally no public market for the securities. Therefore, we may not be able to sell the securities at a time when we desire to do so. We may not always be able to sell those investments at the same or higher prices than we paid for them. As of December 31, 2018, we did not have plans to sell any of these investments. The maximum risk of loss related to our private equity fund investments is limited to the carrying value of our investments in the entities plus any future capital commitments, which include future commitments that we believe are unlikely to be called by the general partner .

Unconsolidated Affiliates

Unconsolidated Affiliates	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Unconsolidated Affiliates	Note 6—Unconsolidated affiliates Investments in unconsolidated affiliates are as follows (in millions): Carrying Value Excess carrying value of investment over proportionate share of net assets Ownership Percentage December 31, 2018 December 31, 2018 International Financial Data Services L.P. 50% $ 93.1 $ 48.3 Pershing Road Development Company, LLC 50% 79.1 77.7 Broadway Square Partners, LLP 50% 53.0 33.1 Other unconsolidated affiliates 14.1 — Total $ 239.3 $ 159.1 Investments in unconsolidated affiliates are accounted for under the equity method of accounting. The total investment in unconsolidated affiliates, including basis differences, is included in Unconsolidated affiliates on the Consolidated Balance Sheet. We record our proportionate share of the results of the unconsolidated affiliates and amortization expense related to basis differences in Equity in earnings of unconsolidated affiliates, net on the Consolidated Statement of Comprehensive (Loss) Income. Equity in earnings of unconsolidated affiliates are as follows (in millions): Year Ended December 31, 2018 International Financial Data Services L.P. $ 2.9 Pershing Road Development Company, LLC 0.2 Broadway Square Partners, LLP (1.5 ) Other unconsolidated affiliates 0.5 Total $ 2.1 International Financial Data Services L.P. (“IFDS L.P.”) is a 50% owned joint venture with State Street Corporation with operations in Canada, Ireland and Luxembourg. Pershing Road Development Company, LLC (“PRDC LLC”) is a 50% owned special-purpose entity formed to develop and lease office space to the U.S. government. Broadway Square Partners, LLP (“Broadway Square Partners”) is a 50% owned real estate joint venture. The difference between the amount at which each of IFDS L.P., PRDC LLC and Broadway Square Partners, is carried, and the amount of underlying equity in net assets, will be amortized as a component of equity in earnings of unconsolidated affiliates over approximately 15 years, 28 years and 40 years, respectively. The following tables summarize related party transactions and balances outstanding with our related parties, which is entirely comprised of transactions with our unconsolidated affiliates (in millions): Year Ended December 31, 2018 Operating revenues from related parties $ 5.6 Amounts paid to related parties (1) 14.4 Distributions received from related parties 11.8 December 31, 2018 Outstanding advances/loans to related parties $ 6.1 Trade accounts receivable from related parties 1.2 Total amounts receivable from related parties $ 7.3 Amounts payable to related parties $ — (1) Excludes amounts paid to our unconsolidated joint ventures related to loans, advancements and other capital investments. Operating revenues from related parties were primarily generated from services provided for the use of our proprietary software and software development services. Payments to our related parties primarily included payments for rent and other facility and maintenance costs pursuant to the properties we lease from our unconsolidated real estate joint ventures. Distributions received include $4.2 million return on investment and $7.8 million return of investment, primarily related to our investments in IFDS L.P., Broadway Square Partners and PRDC LLC.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	Note 7—Acquisitions 2018 Acquisitions Intralinks Holdings Inc. On November 16, 2018, we purchased all of the outstanding stock of Intralinks Holdings, Inc. (“Intralinks”) for approximately $1.0 billion in cash, which was funded with incremental term loan debt and 9.9 million shares of our common stock, plus the costs of effecting the transaction and the assumption of certain liabilities. Intralinks provides financial technology for the global banking, deal making and capital markets communities. Intralinks enables and secures the flow of information through its virtual data room offerings, facilitating strategic initiatives such as mergers and acquisitions, capital raising and investor reporting. The net assets and results of operations of Intralinks have been included in our Consolidated Financial Statements from November 16, 2018. The fair value of the intangible assets, consisting of customer relationships, completed technologies and trade names, was determined using the income approach. Specifically, the relief from-royalty method was utilized for the completed technology and trade name and the excess earnings method was utilized for the customer relationships. The completed technology and customer relationships are amortized each year based on the ratio that the projected cash flows for the intangible assets bear to the total of current and expected future cash flows for the intangible assets. The tradename is amortized on a straight-line basis. The completed technology is amortized over approximately seven years, customer relationships are amortized over approximately twelve years, the trade name is amortized over approximately thirteen years, in each case the estimated lives of the assets. The fair value of deferred revenue was determined using the market approach. The remainder of the purchase price was allocated to goodwill and is not tax deductible. There are $36.3 million in revenues from Intralinks’ operations included in the Consolidated Statement of Comprehensive (Loss) Income for the year ended December 31, 2018. Eze Software On October 1, 2018, we purchased all of the outstanding stock of Eze Software (“Eze”) for approximately $1.45 billion in cash, plus the costs of effecting the transaction and the assumption of certain liabilities. We funded the acquisition with a combination of cash and $875.0 million in incremental term loan debt. Eze provides investment management solutions designed to optimize operational and investment alpha running throughout the entire investment process. The net assets and results of operations of Eze have been included in our Consolidated Financial Statements from October 1, 2018. The fair value of the intangible assets, consisting of customer relationships, completed technologies, and trade names, was determined using the income approach. Specifically, the relief from-royalty method was utilized for the completed technology and trade name and the excess earnings method was utilized for the customer relationships. The intangible assets are amortized each year based on the ratio that the projected cash flows for the intangible assets bear to the total of current and expected future cash flows for the intangible assets. The completed technology is amortized over approximately seven years, customer relationships are amortized over approximately sixteen years, the trade name is amortized over approximately ten years, in each case the estimated lives of the assets. The remainder of the purchase price was allocated to goodwill and a portion is tax deductible. There are $69.9 million in revenues from Eze’s operations included in the Consolidated Statement of Comprehensive (Loss) Income for the year ended December 31, 2018. CACEIS North America On June 1, 2018, we purchased all of the outstanding stock of CACEIS North America (“CACEIS”) for approximately $20.0 million in cash, plus the costs of effecting the transaction and the assumption of certain liabilities. CACEIS provides fund administration services and support for complex investment strategies. The net assets and results of operations of CACEIS have been included in our Consolidated Financial Statements from June 1, 2018. The fair value of the intangible assets, consisting of customer relationships, was determined using the income approach, specifically, the excess earnings method. The customer relationships are amortized each year based on the ratio that the projected cash flows for the intangible assets bear to the total of current and expected future cash flows for the intangible assets. The customer relationships are amortized over approximately sixteen years, which is the estimated life of the asset. The remainder of the purchase price was allocated to goodwill and is not tax deductible. There are $6.4 million in revenues from CACEIS’s operations included in the Consolidated Statement of Comprehensive (Loss) Income for the year ended December 31, 2018. DST Systems Inc. On April 16, 2018, we purchased all of the outstanding stock of DST Systems, Inc. (“DST”) for approximately $5.1 billion in cash, plus the costs of effecting the transaction. In connection with this acquisition, we entered into the Credit Agreement pursuant to which our subsidiaries SS&C and SS&C SARL borrowed an aggregate of approximately $7.4 billion (approximately $524.5 million of which was rolled over from our existing credit facility). DST is a global provider of specialized technology, strategic advisory and business operations outsourcing to the financial services and healthcare industries. The net assets and results of operations of DST have been included in our Consolidated Financial Statements from April 16, 2018. The fair value of the intangible assets, consisting of customer relationships, completed technologies, trade names and a non-compete agreement, was determined using the income approach. Specifically, the relief from-royalty method was utilized for the completed technology and trade name, the excess earnings method was utilized for the customer relationships and the lost profits method was utilized for the non-compete agreements. The intangible assets are amortized each year based on the ratio that the projected cash flows for the intangible assets bear to the total of current and expected future cash flows for the intangible assets. The completed technology is amortized over approximately twelve years, customer relationships are amortized over approximately fourteen years, the trade name is amortized over approximately twelve years and the non-compete agreement is amortized over approximately two years, in each case the estimated lives of the assets. The fair value of the fixed assets was determined using a combination of income, market and cost approaches, dependent on the type of fixed asset that was valued. The fair value of investments was determined based on the nature of the underlying investment. The fair value of investments in marketable equity securities and seed capital investments were determined using quoted prices in active markets for identical assets. The fair value of investment in partnership interests in private equity funds was primarily determined using the net asset value of the fund. The fair value of investments in non-marketable equity securities was determined based on recent observable transactions of similar equity securities of the investee. The fair value of the investments in unconsolidated affiliates was determined using a combination of income and market approaches. The remainder of the purchase price was allocated to goodwill and is not tax deductible. There are $1.6 billion in revenues and $82.4 million of net income from DST’s operations included in the Consolidated Statement of Comprehensive (Loss) Income for the year ended December 31, 2018. 2017 Acquisitions CommonWealth Fund Services Ltd. On October 13, 2017, we purchased all of the outstanding stock of CommonWealth Fund Services Ltd. (“CommonWealth”) for approximately $16.4 million, plus the costs of effecting the transaction and the assumption of certain liabilities. CommonWealth provides a full range of administration services to hedge funds, private equity funds, real estate funds, fund of funds, family offices and other institutions. The net assets and results of operations of CommonWealth have been included in our Consolidated Financial Statements from October 13, 2017. The fair value of the intangible assets, consisting of customer relationships and trade names, was determined using the income approach. Specifically, the excess earnings method was utilized for the customer relationships and the relief-from-royalty method was utilized for the trade name. The intangible assets are amortized each year based on the ratio that the projected cash flows for the intangible assets bear to the total of current and expected future cash flows for the intangible assets. The customer relationships are being amortized over approximately fifteen years and the trade name is being amortized over approximately two years, in each case the estimated lives of the assets. The remainder of the purchase price was allocated to goodwill and is not tax deductible. The following summarizes the preliminary allocation of the purchase price for the 2018 acquisitions of Intralinks, Eze, CACEIS and DST. The assets and liabilities pending finalization include the valuation of acquired tangible and intangible assets and the evaluation of taxes. The following also summarizes the final allocation of the purchase price for the 2017 acquisition of CommonWealth (in millions): Intralinks Eze CACEIS DST CommonWealth Accounts receivable $ 58.3 $ 45.0 $ 1.5 $ 406.8 $ 0.8 Fixed assets 8.0 15.9 0.4 507.4 0.1 Other assets 31.9 8.2 0.4 386.4 0.2 Investments — — — 474.0 — Acquired client relationships and contracts 646.1 463.8 9.8 1,889.1 6.7 Completed technology 123.2 168.1 — 550.0 — Trade names 43.1 13.0 — 139.0 0.1 Non-compete agreements — — — 43.0 — Goodwill 823.4 838.5 9.7 2,643.8 10.9 Current portion of long-term debt — — — (605.8 ) — Accounts payable (5.9 ) (3.3 ) (0.1 ) (98.3 ) (0.1 ) Accrued employee compensation and benefits (45.6 ) (17.0 ) (0.3 ) (174.9 ) — Deferred revenue (35.3 ) (0.9 ) (0.1 ) (34.2 ) — Deferred income taxes (176.4 ) (77.1 ) (1.3 ) (760.4 ) (1.8 ) Long-term debt — — — (29.4 ) — Client funds obligations — — — (376.2 ) — Other liabilities assumed (18.8 ) (5.0 ) (0.3 ) (298.5 ) (0.3 ) Consideration paid, net of cash acquired $ 1,452.0 $ 1,449.2 $ 19.7 $ 4,661.8 $ 16.6 Additionally, we acquired Modestspark in October 2017 for approximately $2.8 million. The consideration paid, net of cash acquired for DST above includes $48.1 million of non-cash consideration related to the fair value of unvested acquired equity awards with a pre-acquisition service period. This amount is excluded from “Cash paid for business acquisitions, net of cash acquired” for 2018 on the Company’s Consolidated Statement of Cash Flows. Cash acquired for DST includes $347.0 million of restricted cash and cash equivalents classified as funds held on behalf of clients. The Company recorded severance expense related to reductions in headcount in connection with the integration efforts associated with the acquisitions of DST, Eze and Intralinks. The majority of the positions eliminated in the reduction in force were effective in June 2018 for DST. The reduction was completed in December 2018. The amount of severance expense recognized in the Company’s Consolidated Statement of Comprehensive (Loss) Income for 2018 was as follows (in millions): For the Year Ended December 31, Consolidated Statements of Comprehensive (Loss) Income Classification 2018 Cost of software-enabled services $ 38.3 Cost of license, maintenance and other related 0.5 Total cost of revenues 38.8 Selling and marketing 3.5 Research and development 12.7 General and administrative 7.6 Total operating expenses 23.8 Total severance expense $ 62.6 The fair value of acquired accounts receivable balances approximates the contractual amounts due from acquired customers, except for approximately $7.9 million, $7.5 million and $6.1 million of contractual amounts that are not expected to be collected as of the acquisition date and that were also reserved by the companies we acquired – Intralinks, Eze and DST, respectively. The goodwill associated with each of the transactions above is a result of expected synergies from combining the operations of businesses acquired with us and intangible assets that do not qualify for separate recognition, such as an assembled workforce. The following unaudited pro forma condensed consolidated results of operations are provided for illustrative purposes only and assume that the acquisitions of Intralinks, Eze, CACEIS and DST occurred on January 1, 2017 and CommonWealth and Modestspark occurred on January 1, 2016, after giving effect to certain adjustments, including amortization of intangibles, interest, transaction costs and tax effects. This unaudited pro forma information (in millions, except per share data) should not be relied upon as being indicative of the historical results that would have been obtained if the acquisitions had actually occurred on that date, nor of the results that may be obtained in the future. Year Ended December 31, 2018 2017 Revenues $ 4,624.7 $ 4,501.6 Net income $ 103.1 $ 120.8 Basic EPS $ 0.44 $ 0.59 Diluted EPS $ 0.42 $ 0.57 Basic weighted average number of common shares outstanding 232.5 204.9 Diluted weighted average number of common and common equivalent shares outstanding 243.7 211.6

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Note 8—Goodwill and intangible assets The following table summarizes changes in goodwill (in millions): Balance at December 31, 2016 $ 3,652.7 2017 acquisitions 13.3 Adjustments to prior acquisitions (0.6 ) Effect of foreign currency translation 42.4 Balance at December 31, 2017 $ 3,707.8 2018 acquisitions 4,315.4 Adjustments to prior acquisitions 0.2 Effect of foreign currency translation (165.4 ) Balance at December 31, 2018 $ 7,858.0 A summary of the components of intangible assets is as follows (in millions): December 31, 2018 2017 Customer relationships $ 4,618.4 $ 1,665.8 Completed technology 1,379.6 550.9 Trade names 255.6 61.1 Other 45.7 2.8 Total intangible assets 6,299.3 2,280.6 Less: accumulated amortization (1,338.0 ) (938.8 ) Total intangible assets, net $ 4,961.3 $ 1,341.8 Total estimated amortization expense, related to intangible assets, for each of the next five years and thereafter, as of December 31, 2018, is expected to approximate (in millions): Year Ending December 31, 2019 $ 632.8 2020 571.3 2021 510.2 2022 476.9 2023 442.9 Thereafter 2,327.2 Total $ 4,961.3 Amortization expense associated with customer relationships, completed technology and other amortizable intangible assets was $410.7 million, $205.9 million and $201.5 million for the years ended December 31, 2018, 2017 and 2016, respectively. Net capitalized software costs of $42.6 million and $12.1 million are included in the December 31, 2018 and 2017 Consolidated Balance Sheets, respectively, under “Intangible and other assets”. Amortization expense related to capitalized software development costs was $7.7 million, $5.4 million, and $3.5 million for each of the years ended December 31, 2018, 2017, and 2016, respectively.

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	Note 9—Debt At December 31, 2018 and 2017, debt consisted of the following (in millions): December 31, 2018 2017 Senior secured credit facilities, weighted-average interest rate of 4.77% and 3.75%, respectively $ 8,319.1 $ 1,492.2 5.875% senior notes due 2023 — 600.0 Other indebtedness 28.2 — Unamortized original issue discount and debt issuance costs (91.3 ) (47.0 ) 8,256.0 2,045.2 Less current portion of long-term debt 87.5 37.9 Long-term debt $ 8,168.5 $ 2,007.3 Senior Secured Credit Facilities On April 16, 2018, in connection with our acquisition of DST Systems, Inc. (“DST”), we entered into an amended and restated credit agreement with SS&C Technologies, Inc. (“SS&C”), SS&C European Holdings SARL, an indirect wholly-owned subsidiary of SS&C (“SS&C SARL”) and SS&C Technologies Holdings Europe SARL, an indirect wholly-owned subsidiary of SS&C (“SS&C Tech SARL”) as the borrowers (“Credit Agreement”). The Credit Agreement includes four tranches of term loans (together the “Initial Term Loans”): (i) a $518.6 million term B-1 facility which matures on July 8, 2022 for SS&C (“Term B-1 Loan”); (ii) a $5.9 million term B-2 facility which matures on July 8, 2022 for SS&C SARL (“Term B-2 Loan”) (iii) a new $5.046 billion term B-3 facility, which matures on April 16, 2025 for SS&C (“Term B-3 Loan”); and (iv) a new $1.8 billion term B-4 facility, which matures on April 16, 2025 for SS&C SARL (“Term B-4 Loan”). In addition, the Credit Agreement has a revolving credit facility with a five-year term available for borrowings by SS&C with $250.0 million in available commitments (“Revolving Credit Facility”), of which $242.4 million was available as of December 31, 2018. The Revolving Credit Facility also contains a $25 million letter of credit sub-facility, of which $7.6 million was utilized as of December 31, 2018. The majority of the initial proceeds from the Initial Term Loans was used to satisfy the consideration required to fund the acquisition of DST, repay certain amounts outstanding under our then-existing credit agreement (“Prior Credit Agreement”), repay all of the outstanding principal amount of our 5.875% Senior Notes due 2023 (“Senior Notes”) and to repay acquired debt associated with DST. The refinancing of the Prior Credit Agreement was evaluated in accordance with FASB ASC 470-50, Debt-Modifications and Extinguishments Loss on extinguishment of debt On October 1, 2018, in connection with our acquisition of Eze, Holdings, we entered into an amendment (the “Commitment Increase Amendment”) to the Credit Agreement. Pursuant to the Commitment Increase Amendment, a new $875.0 million senior secured term B-5 facility (“Term B-5 Loan”, and together with the Initial Term Loans, the “Term Loans”) was made available to us, the proceeds of which was used to finance, in part, the Eze acquisition. On November 16, 2018, in connection with our acquisition of Intralinks, Holdings, we entered into an amendment (the “Incremental Term Loan Amendment”) to the Credit Agreement. Pursuant to the Incremental Term Loan Amendment, an additional $1.0 billion senior secured term B-5 facility (“Term B-5 Loan”, and together with the Initial Term Loans, the “Term Loans”) was made available to us, the proceeds of which was used to finance, in part, the Intralinks acquisition. The Term Loans and Revolving Credit Facility bear interest, at the election of the borrowers, at the base rate (as defined in the Credit Agreement) or LIBOR, plus the applicable interest rate margin for the credit facility. Amounts drawn on the Revolving Credit Facility initially bear interest at either LIBOR plus 2.25% or at the base rate plus 1.25%, and is subject to a step-down at any time our consolidated net secured leverage ratio is less than 4.75 times, to 2.00% in the case of the LIBOR margin and 1.00% in the case of the base rate margin. The Term B-1 Loan and Term B-2 Loan bear interest at either LIBOR plus 2.25% or at the base rate plus 1.25%. The Term B-3 Loan, Term B-4 Loan and Term B-5 Loan initially bear interest at either LIBOR plus 2.50% or at the base rate plus 1.50%, and are subject to a step-down at any time our consolidated net secured leverage ratio is less than 4.75 times, to 2.25% in the case of the LIBOR margin and 1.25% in the case of the base rate margin. As of December 31, 2018, there was $514.5 million in principal amount outstanding under the Term B-1 Loan, $4,309.6 million in principal amount outstanding under the Term B-3 Loan, $1,634.7 million in principal amount outstanding under the Term B-4 Loan and $1,860.3 million in principal amount outstanding under the Term B-5 Loan. There was no principal amount outstanding under the Term B-2 Loan. SS&C and SS&C SARL SARL SS&C’s and SS&C SARL The obligations of the U.S. loan parties under the Credit Agreement are secured by substantially all of the assets of such persons (subject to customary exceptions and limitations), including a pledge of all of the capital stock of substantially all of the U.S. wholly-owned restricted subsidiaries of such persons (with customary exceptions and limitations) and 65% of the capital stock of certain foreign restricted subsidiaries of such persons (with customary exceptions and limitations). All obligations of the non-U.S. loan parties under the Credit Agreement are secured by substantially all of our and the other guarantors’ assets (subject to customary exceptions and limitations), including a pledge of all of the capital stock of substantially all of our wholly-owned restricted subsidiaries (with customary exceptions and limitations). The Credit Agreement includes negative covenants that, among other things and subject to certain thresholds and exceptions, limit our ability and the ability of its restricted subsidiaries to incur debt or liens, make investments (including in the form of loans and acquisitions), merge, liquidate or dissolve, sell property and assets, including capital stock of its subsidiaries, pay dividends on its capital stock or redeem, repurchase or retire its capital stock, alter the business we conduct, amend, prepay, redeem or purchase subordinated debt, or engage in transactions with its affiliates. The Credit Agreement also contains customary representations and warranties, affirmative covenants and events of default, subject to customary thresholds and exceptions. In addition, the Credit Agreement contains a financial covenant for the benefit of the Revolving Credit Facility requiring us to maintain a minimum consolidated net secured leverage ratio. In addition, under the Credit Agreement, certain defaults under agreements governing other material indebtedness could result in an event of default under the Credit Agreement, in which case the lenders could elect to accelerate payments under the Credit Agreement and terminate any commitments they have to provide future borrowings. Senior Notes On April 16, 2018, we redeemed all of the outstanding principal amount of our Senior Notes utilizing a portion of the proceeds from the Initial Term Loans described above. The redemption of the Senior Notes required the payment of a “make whole” premium calculated pursuant to the indenture governing the Senior Notes. See Loss on extinguishment of debt Other indebtedness In connection with the acquisition of DST, we assumed a mortgage with a principal amount of £21.0 million, which matures in October 2020 (“U.K. Mortgage”) and a $4.1 million mortgage on property in the U.S. The outstanding amount under the U.K. Mortgage was $24.2 million at December 31, 2018 with a fixed interest rate of 3.1%. Principal payments of £1.0 million are payable semi-annually in April and October of each year and accrued interest payable quarterly, with the outstanding balance due at maturity. Debt issuance costs In connection with the Credit Agreement, we capitalized an aggregate of $55.3 million in financing costs in 2018. Other costs incurred in connection with the Credit Agreement, which did not meet the criteria for capitalization, are included in Transaction expenses in the Consolidated Statement of Comprehensive (Loss) Income. Loss on extinguishment of debt We recorded a $44.4 million loss on extinguishment of debt in connection with the entry into the Credit Agreement and redemption of the Senior Notes during 2018. The loss on early extinguishment of debt includes the write-off of a portion of the unamortized capitalized financing fees and the unamortized original issue discount related to the Prior Credit Agreement for amounts accounted for as a debt extinguishment, a make-whole premium paid in connection with the redemption of the Senior Notes and the write-off of all unamortized capitalized financing fees and unamortized original issue discount related to the Senior Notes. During the fourth quarter of 2018, we purchased $45.0 million principal amount of our Term Loans in privately negotiated transactions, which resulted in a gain on extinguishment of debt totaling $1.1 million. Fair value of debt The carrying amounts and fair values of financial instruments are as follows (in millions): December 31, 2018 December 31, 2017 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 8,319.1 $ 7,847.4 $ 1,492.2 $ 1,500.8 5.875% senior notes due 2023 — — 600.0 631.3 Other indebtedness 28.2 28.3 — — The above fair values, which are Level 2 liabilities, were computed based on comparable quoted market prices. The fair values of cash, accounts receivable, net, short-term borrowings, and accounts payable approximate the carrying amounts due to the short-term maturities of these instruments. Future maturities of debt At December 31, 2018, annual maturities of long-term debt during the next five years and thereafter are as follows (in millions): Year ending December 31, 2019 $ 87.4 2020 106.5 2021 84.8 2022 578.4 2023 and thereafter 7,490.2 Total $ 8,347.3

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	Note 10—Stockholders’ Equity Two-for-one Stock Split. On May 25, 2016, our Board of Directors approved a two-for-one stock split to be effected in the form of a stock dividend. The record date for the stock split was June 7, 2016 and the payment date was June 24, 2016. All share and per share amounts (other than for our Class A non-voting common stock) have been retroactively restated for all periods presented to reflect the stock split. Conversion of Class A Common Stock. On March 30, 2016, William C. Stone converted 2.7 million shares of Class A non-voting stock into 2.7 million shares of our common stock, or 5.4 million shares of common stock on a post-split basis. Each share of Class A non-voting common stock converted automatically into one share of our common stock upon the expiration of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. Public offering. In April 2018, we completed a public offering of our common stock. The offering included 30.3 million newly issued shares of common stock sold by us (including 3.9 million shares of common stock sold pursuant to the underwriters’ option to purchase additional shares) at an offering price to the public of $47.50 per share for which we received total net proceeds of approximately $1.4 billion Other Common Stock Issuance. In November 2018, we issued 9.9 million shares in connection with our acquisition of Intralinks. Dividends. In 2018, we paid a quarterly cash dividend of $0.07 per share of common stock on March 15, 2018 and June 15, 2018 and $0.08 per share of common stock on September 18, 2018 and December 17, 2018 to stockholders of record as of the close of business on March 1, 2018, June 1, 2018, September 4, 2018 and December 1, 2018, respectively, totaling $70.9 million. In 2017, we paid a quarterly cash dividend of $0.0625 per share of common stock on March 15, 2017, June 15, 2017 and $0.07 per share of common stock on September 15, 2017 and December 15, 2017 to stockholders of record as of the close of business on March 1, 2017, June 1, 2017, September 1, 2017 and December 1, 2017, respectively, totaling $54.4 million Other comprehensive loss. Accumulated other comprehensive loss balances, net of tax consist of the following (in millions): Foreign Currency Translation Accumulated Other Comprehensive Loss Balance, December 31, 2016 $ (139.1 ) $ (139.1 ) Net current period other comprehensive income 56.4 56.4 Balance, December 31, 2017 $ (82.7 ) $ (82.7 ) Net current period other comprehensive loss (260.3 ) (260.3 ) Balance, December 31, 2018 $ (343.0 ) $ (343.0 ) Adjustments to accumulated other comprehensive (loss) income attributable to us are as follows (in millions): Year Ended December 31, 2018 Year Ended December 31, 2017 Year Ended December 31, 2016 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Cumulative translation adjustments Current period translation adjustments $ (260.9 ) $ 0.6 $ 56.9 $ (0.5 ) $ (55.7 ) $ (0.2 ) Net cumulative translation adjustments (260.9 ) 0.6 56.9 (0.5 ) (55.7 ) (0.2 ) Total other comprehensive (loss) income $ (260.9 ) $ 0.6 $ 56.9 $ (0.5 ) $ (55.7 ) $ (0.2 )

Revenues

Revenues	12 Months Ended
	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenues	Note 11—Revenue Adoption of ASC Topic 606, “Revenue from Contracts with Customers” On January 1, 2018, we adopted ASC 606 using the modified retrospective method for those contracts that were not completed as of the date of adoption. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts continue to be reported in accordance with ASC 605 and 985. The most significant impact of the standard to us relates to the timing of revenue recognition for arrangements involving term licenses. Under ASC 606, we are required to recognize term license revenues upon the transfer of the license and recognize the associated maintenance revenues over the contract period, as opposed to our prior practice of recognizing both the term license and maintenance revenues ratably over the contract period. In addition, we are required to capitalize and amortize incremental costs of obtaining a contract, such as certain sales commission costs, over the expected customer relationship period if we expect to recover those costs. We previously expensed these costs over the length of the initial contract excluding any renewals. We recorded an increase to retained earnings of $65.8 million, or $47.9 million net of tax, as of January 1, 2018 due to the cumulative impact of adopting ASC 606, with the impact primarily related to our term license revenues. The impact to revenues for the year ended December 31, 2018 related to these adjustments was a decrease of $39.9 million. The impact of adoption of ASC 606 on our Consolidated Statement of Comprehensive (Loss) Income was as follows (in millions): Year Ended December 31, 2018 As Reported Without adoption of ASC 606 Effect of Change Revenues: License, maintenance and related $ 622.2 $ 590.0 $ 32.2 Operating expenses: Selling and marketing $ 211.0 $ 214.4 $ (3.4 ) The impact of adoption of ASC 606 on our Consolidated Balance Sheet was as follows (in millions): As of December 31, 2018 As Reported Balance without adoption of ASC 606 Effect of Change Assets: Accounts receivable, net $ 681.7 $ 686.8 $ (5.1 ) Contract asset (current) 18.5 — 18.5 Prepaid expenses and other current assets 154.5 147.9 6.6 Contract asset (non-current) 31.5 — 31.5 Liabilities: Deferred revenue $ 245.7 $ 295.8 $ (50.1 ) Other long-term liabilities 235.5 233.3 2.2 The adoption of ASC 606 had no impact on our total cash flows from operations. Deferred revenues primarily represents unrecognized fees billed or collected for maintenance and professional services. Deferred revenues are recognized as (or when) we perform under the contract. Deferred revenues are recorded on a net basis with contract assets at the contract level. Accordingly, as of December 31, 2018, approximately $32.4 million of deferred revenue is presented net within contract assets arising from the same contracts. The amount of revenues recognized in the period that was included in the opening deferred revenues balance was $208.7 million for the year ended December 31, 2018. As of December 31, 2018, revenue of approximately $357.0 million is expected to be recognized from remaining performance obligations for license, maintenance and related revenues, of which $233.5 million is expected to be recognized over the next twelve months. Revenue Disaggregation The following table disaggregates our revenues by geography (in millions): Year Ended December 31, 2018 2017 (1) 2016 (1) United States $ 2,479.8 $ 1,222.4 $ 1,081.3 United Kingdom 503.9 115.8 105.3 Asia-Pacific and Japan 145.8 112.7 90.1 Europe (excluding United Kingdom), Middle East and Africa 145.4 102.1 101.3 Canada 96.3 76.4 65.7 Americas, excluding United States and Canada 49.9 45.9 37.7 Total $ 3,421.1 $ 1,675.3 $ 1,481.4 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. The following table disaggregates our revenues by source (in millions): Year Ended December 31, 2018 2017 (1) 2016 (1) Software-enabled services $ 2,798.9 $ 1,114.0 $ 956.8 Maintenance and term licenses 508.8 463.6 414.7 Perpetual licenses 29.5 19.8 23.9 Professional services 83.9 77.9 86.0 Total $ 3,421.1 $ 1,675.3 $ 1,481.4 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method.

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based Compensation	Note 12—Stock-based Compensation In February 2016, our Board of Directors adopted the Amended and Restated 2014 Stock Incentive Plan (the “Amended 2014 Plan”), which became effective in May 2016 upon stockholder approval and which amended and restated our 2014 Stock Option Plan (the “2014 Plan”) (together with the Amended 2014 Plan, the “2014 Plans”). The Amended 2014 Plan was adopted with an initial share capacity of 24.0 million shares available for the grant of awards and was adopted with the intent of being our only equity plan by authorizing the issuance of full-value awards (that is, restricted stock awards (“RSAs”) and restricted stock units (“RSUs”)) and by expanding the class of participants to include non-employee directors. Since the adoption of the Amended 2014 Plan, we have not made any grants of equity or equity-based awards under the 2008 Stock Incentive Plan or the 2006 Equity Incentive Plan. The 2014 Plan authorizes stock options to be granted for up to 6.0 million shares of our common stock. Under the 2014 Plan, the exercise price of stock options is set on the grant date and may not be less than the fair market value per share on such date. Generally, stock options expire ten years from the date of grant. We have granted time-based stock options under the 2014 Plan. In April 2008, our Board of Directors adopted, and our stockholders approved, an equity-based incentive plan (“the 2008 Plan”), which authorizes equity awards to be granted for up to 21.8 million shares of our common stock, which was calculated based on an initial authorization of 2.8 million shares of our common stock and an annual increase to be added on the first day of each of our fiscal years during the term of the 2008 Plan beginning in fiscal 2009 equal to the lesser of (i) 2.8 million shares of common stock, (ii) 2% of the outstanding shares on such date or (iii) an amount determined by our Board of Directors. Under the 2008 Plan, which became effective in July 2008, the exercise price of awards is set on the grant date and may not be less than the fair market value per share on such date. Generally, awards expire ten years from the date of grant. We have granted time-based options and RSUs under the 2008 Plan. In August 2006, our Board of Directors adopted an equity-based incentive plan (“the 2006 Plan”), which authorizes equity awards to be granted for up to 22.3 million shares of our common stock. Under the 2006 Plan, the exercise price of awards is set on the grant date and may not be less than the fair market value per share on such date. Generally, awards expire ten years from the date of grant. We have granted RSAs of our common stock and both time-based and performance-based options under the 2006 Plan. We generally settle RSUs, RSAs, stock appreciation rights (“SARs”) and stock option exercises with newly issued common shares. Restricted stock units. During the year ended December 31, 2018, we granted 24,970 RSUs under the 2014 Plan, which vest 50% at the time of granting and continue to vest 1/36 th Restricted stock awards. We did not grant any RSAs during the years ended December 31, 2018 and 2017. The RSAs vest in full upon a change in control, subject to certain conditions. At both December 31, 2018 and 2017, there was less than $0.1 million of unearned non-cash stock-based compensation related to the RSAs that we expect to recognize as expense over a weighted average remaining period of approximately 3 months and 15 months, respectively. Time-based options and SARs. Time-based options and SARs granted under the 2006 Plan, the 2008 Plan, the 2014 Plans generally vest 25% on the first anniversary of the grant date and 1/36 th For the time-based options and SARs valued using the Black-Scholes option-pricing model, we used the following weighted-average assumptions: Time-Based awards 2018 2017 2016 Expected term to exercise (years) 4.0 4.0 4.0 Expected volatility 25.26 % 25.61 % 27.64 % Risk-free interest rate 2.67 % 1.92 % 1.30 % Expected dividend yield 0.70 % 0.73 % 0.82 % Total stock options, SARs, RSUs and RSAs. The amount of stock-based compensation expense recognized in our Consolidated Statements of Comprehensive (Loss) Income for the years ended December 31, 2018, 2017 and 2016 was as follows (in millions): Year Ended December 31, 2018 Year Ended December 31, 2017 Year Ended December 31, 2016 Consolidated Statements of Comprehensive (Loss) Income Classification Options, SARs RSUs RSAs Total Options, SARs RSUs RSAs Total Options, SARs RSUs RSAs Total Cost of software-enabled services $ 25.7 $ 13.7 $ — $ 39.4 $ 11.1 $ 0.1 $ — $ 11.2 $ 10.1 $ 0.1 $ — $ 10.2 Cost of license, maintenance and other related 3.9 0.8 — 4.7 3.6 0.6 — 4.2 3.5 1.5 — 5.0 Total cost of revenues 29.6 14.5 — 44.1 14.7 0.7 — 15.4 13.6 1.6 — 15.2 Selling and marketing 7.3 4.5 — 11.8 8.5 1.0 0.1 9.6 8.9 2.4 0.2 11.5 Research and development 8.0 1.0 — 9.0 6.2 1.3 — 7.5 6.0 2.3 — 8.3 General and administrative 16.1 15.9 — 32.0 8.6 0.4 — 9.0 11.3 4.2 — 15.5 Total operating expenses 31.4 21.4 — 52.8 23.3 2.7 0.1 26.1 26.2 8.9 0.2 35.3 Total stock-based compensation expense $ 61.0 $ 35.9 $ — $ 96.9 $ 38.0 $ 3.4 $ 0.1 $ 41.5 $ 39.8 $ 10.5 $ 0.2 $ 50.5 The associated future income tax benefit recognized was $33.7 million, $10.3 million and $18.4 million for the years ended December 31, 2018, 2017 and 2016, respectively. For the year ended December 31, 2018, the amount of cash received from the exercise of stock options was $84.9 million, with an associated tax benefit from stock awards realized of $34.6 million. The intrinsic value of options and SARs exercised during the year ended December 31, 2018 was approximately $107.6 million. For the year ended December 31, 2017, the amount of cash received from the exercise of stock options was $60.2 million, with an associated tax benefit from stock awards realized of $25.0 million. The intrinsic value of options and SARs exercised during the year ended December 31, 2017 was approximately $71.1 million. For the year ended December 31, 2016, the amount of cash received from the exercise of stock options was $39.2 million, with an associated tax benefit from stock awards realized of $62.1 million. The intrinsic value of options and SARs exercised during the year ended December 31, 2016 was approximately $141.2 million. In connection with our acquisition of DST in April 2018, we converted DST’s unvested stock options, unvested RSUs and unvested PSUs into equity awards and rights to receive our common stock. During the year ended December 31, 2018, we recognized stock-based compensation expense of $49.3 million related to these assumed awards, of which $31.1 million related to one-time charges for the accelerated vesting of certain awards. The following table summarizes stock option and SAR activity as of and for the years ended December 31, 2018, 2017 and 2016 (share data in millions): Weighted Average Shares Exercise Price Outstanding at December 31, 2015 30.2 $ 20.64 Granted (1) 2.4 $ 30.39 Cancelled/forfeited (1.6 ) $ 31.15 Exercised (6.0 ) $ 7.53 Outstanding at December 31, 2016 25.0 $ 24.04 Granted (2) 11.5 $ 36.63 Cancelled/forfeited (1.4 ) $ 31.59 Exercised (3.8 ) $ 19.08 Outstanding at December 31, 2017 31.3 $ 28.92 Granted (2) 13.2 $ 47.50 Equity awards assumed from DST 0.7 $ 48.85 Cancelled/forfeited (1.4 ) $ 38.56 Exercised (4.0 ) $ 24.71 Outstanding at December 31, 2018 39.8 $ 35.48 (1) Of the grants during 2016, 1.0 million were granted under the Amended 2014 Plan and 1.4 million were granted under the 2008 Plan. (2) Granted under the Amended 2014 Plan. The following table summarizes RSU activity as of and for the years ended December 31, 2018, 2017 and 2016 (share data in millions): Weighted Average Grant Date Shares Fair Value Outstanding at December 31, 2015 1.0 $ 31.01 Granted — $ — Cancelled/forfeited (0.1 ) $ 31.22 Vested (0.5 ) $ 30.95 Outstanding at December 31, 2016 0.4 $ 31.06 Granted — $ — Cancelled/forfeited — $ 31.36 Vested (0.2 ) $ 31.03 Outstanding at December 31, 2017 0.2 $ 31.04 Granted — $ 50.62 Equity awards assumed from DST 2.0 $ 50.71 Cancelled/forfeited — $ 48.71 Vested (0.8 ) $ 46.45 Outstanding at December 31, 2018 1.4 $ 50.44 The following table summarizes information about vested stock options and SARs outstanding that are currently exercisable and stock options and SARs outstanding that are expected to vest at December 31, 2018: Outstanding, Vested Stock Options and SARs Currently Exercisable Outstanding Stock Options and SARs Expected to Vest Weighted Weighted Weighted Average Weighted Average Average Aggregate Remaining Average Aggregate Remaining Exercise Intrinsic Contractual Exercise Intrinsic Contractual Shares Price Value Term Shares Price Value Term (In millions) (In millions) (Years) (In millions) (In millions) (Years) 17.5 $ 25.85 $ 338.0 5.90 39.8 $ 35.47 $ 419.4 7.75

Defined Contribution Plans

Defined Contribution Plans	12 Months Ended
	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Defined Contribution Plans	Note 13—Defined Contribution Plans We sponsor defined contribution plans that cover our domestic and non-domestic employees following the completion of an eligibility period. During the years ended December 31, 2018, 2017 and 2016, we incurred $60.8 million, $18.1 million and $14.8 million, respectively, of employer contribution expenses under these plans. Additionally, we sponsor a defined benefit pension plan in the United Kingdom, which has a net benefit asset as of December 31, 2018 of $0.8 million.

Basic and Diluted Earnings per

Basic and Diluted Earnings per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Basic and Diluted Earnings per Share	Note 14—Basic and diluted earnings per share Earnings per share (“EPS”) is calculated in accordance with the relevant standards. Basic EPS includes no dilution and is computed by dividing income available to our common stockholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income by the weighted average number of common and common equivalent shares outstanding during the period. Common equivalent shares consist of stock options, SARs and RSUs and RSAs using the treasury stock method. Common equivalent shares are excluded from the computation of diluted earnings per share if the effect of including such common equivalent shares is anti-dilutive because their total assumed proceeds exceed the average fair value of common stock for the period. We have two classes of common stock, each with identical participation rights to earnings and liquidation preferences, and therefore the calculation of EPS as described above is identical to the calculation under the two-class method. The following table sets forth the computation of basic and diluted EPS (in millions, except per share amounts): Year Ended December 31, 2018 2017 2016 Net income $ 103.2 $ 328.9 $ 131.0 Shares: Weighted average common shares outstanding — used in calculation of basic EPS 232.5 204.9 200.3 Weighted average common stock equivalents — options and restricted shares 11.2 6.7 5.5 Weighted average common and common equivalent shares outstanding — used in calculation of diluted EPS 243.7 211.6 205.8 Earnings per share - Basic $ 0.44 $ 1.60 $ 0.65 Earnings per share - Diluted $ 0.42 $ 1.55 $ 0.64 Weighted average stock options, SARs, RSUs and RSAs representing 5.5 million, 10.6 million and 14.1 million shares were outstanding for the years ended December 31, 2018, 2017 and 2016, respectively, but were not included in the computation of diluted EPS because the effect of including them would be anti-dilutive.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 15—Income Taxes The sources of income before income taxes were as follows (in millions): Year Ended December 31, 2018 2017 2016 U.S. $ (10.9 ) $ 153.8 $ 68.2 Foreign 136.0 128.9 95.4 Income before income taxes $ 125.1 $ 282.7 $ 163.6 The income tax provision (benefit) consists of the following (in millions): Year Ended December 31, 2018 2017 2016 Current: Federal $ 66.4 $ 81.1 $ 47.6 Foreign 37.8 21.4 18.9 State 23.5 3.3 13.9 Total 127.7 105.8 80.4 Deferred: Federal (75.4 ) (144.7 ) (38.6 ) Foreign 0.2 (2.8 ) (4.1 ) State (30.6 ) (4.5 ) (5.1 ) Total (105.8 ) (152.0 ) (47.8 ) Total $ 21.9 $ (46.2 ) $ 32.6 The reconciliation between the expected tax expense and the actual tax provision (benefit) is computed by applying the U.S. federal corporate income tax rate of 21% (35% for years ended December 31, 2017 and 2016) to income before income taxes as follows (in millions): Year Ended December 31, 2018 2017 2016 Computed “expected” tax expense $ 26.3 $ 98.9 $ 57.3 (Decrease) increase in income tax expense resulting from: State income taxes (net of federal income tax benefit) (6.0 ) 7.5 5.6 Foreign operations 10.7 (36.2 ) (33.6 ) Enactment of Tax Act — (88.0 ) — Effects of stock based compensation (14.6 ) (13.6 ) — Effect of valuation allowance 4.6 (3.3 ) 2.1 Uncertain tax positions (0.9 ) (8.2 ) 6.5 Tax credits (4.0 ) (0.6 ) (3.7 ) Other 5.8 (2.7 ) (1.6 ) Provision (benefit) provision for income taxes $ 21.9 $ (46.2 ) $ 32.6 On December 22, 2017, the Tax Act was enacted into law, reducing the U.S. corporate income tax rate from 35% to 21%. In accordance with SAB 118, we made a provisional beneficial estimate of $88.0 million in the fourth quarter of 2017 to account for specific income tax effects of the Tax Act. Pursuant to SAB 118, we were allowed a measurement period of up to one year after the enactment date of the Tax Act to finalize the accounting of the related tax impacts. We completed our accounting of the Tax Act in the fourth quarter of 2018 and made no significant adjustments to the provisional estimates made in the prior year. The components of deferred income taxes at December 31, 2018 and 2017 are as follows (in millions): 2018 2017 Deferred Deferred Deferred Deferred Tax Tax Tax Tax Assets Liabilities Assets Liabilities Net operating loss carryforwards 54.8 — 24.2 — Deferred compensation 47.6 — 22.4 — Tax credit carryforwards 34.6 — 26.3 — Accrued expenses 25.3 — 13.3 — Other 24.8 — 0.9 — Customer relationships — 834.4 — 220.8 Other intangible assets — 204.5 — 53.7 Unconsolidated investments — 134.4 0.6 — Acquired technology — 66.5 — 53.3 Trade names — 49.9 — 6.3 Property and equipment — 43.4 — 6.3 Unremitted foreign earnings — 9.0 — 7.2 Deferred revenue — 5.7 — 0.2 Total 187.1 1,347.8 87.7 347.8 Valuation allowance (36.2 ) — (21.1 ) — Total $ 150.9 $ 1,347.8 $ 66.6 $ 347.8 At December 31, 2018 and 2017, we had accrued a deferred income tax liability for foreign withholding taxes of $9.0 million and $7.2 million, respectively, on the unremitted earnings of our major Canadian subsidiary and certain unconsolidated foreign affiliates we do not control and whose earnings cannot be considered permanently reinvested. We have not accrued any deferred income taxes for withholding, foreign local or U.S. state income taxes on the unremitted earnings of other foreign subsidiaries as those earnings are permanently reinvested. At December 31, 2018, we have domestic federal net operating loss carryforwards of $93.3 million, which will begin to expire in 2021 and state net operating loss carryforwards of $90.6 million, which will begin to expire in 2021. At December 31, 2018, we have foreign net operating loss carryforwards of $123.7 million, of which $66.6 million can be carried forward indefinitely. The remaining $57.1 million will begin to expire in 2019. At December 31, 2018, we have tax credit carryforwards of $34.6 million relating to domestic and foreign jurisdictions, of which $27.6 million relate to domestic tax credits that are expected to be utilized before they begin to expire in 2019, $4.5 million relate to domestic tax credits that are not expected to be utilized before they begin to expire in 2022, $1.4 million relate to foreign jurisdictions that are expected to be utilized before they begin to expire in 2025 and $1.1 million relate to foreign jurisdictions not expected to be utilized before they begin to expire in 2026. The domestic credits consist primarily of federal and state R&D credits, while the foreign credits consist primarily of minimum alternative tax credit carryforwards at our India operations. A valuation allowance is recorded against deferred tax assets if, based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. We have recorded valuation allowances of $36.2 million at December 31, 2018 related primarily to certain foreign and state net operating loss carryforwards and tax credit carryforwards and $21.1 million at December 31, 2017 related to certain foreign net operating loss carryforwards and tax credit carryforwards. Of the $36.2 million valuation allowance recorded at December 31, 2018, $12.4 million relates to foreign net operating losses that do not expire. The change in the valuation allowance from 2017 to 2018 is primarily due to foreign and state net operating losses generated but not expected to be utilized as well as the acquisition of foreign net operating loss and tax credit carryforwards not expected to be utilized, due in part to the utilization of the tax attributes being limited to offset only income with certain characteristics. The following table summarizes the activity related to our unrecognized tax benefits for the years ended December 31, 2018 and 2017 (in millions): Balance at December 31, 2016 $ 63.0 Increases related to current year tax positions 7.6 Decreases related to prior tax positions (4.8 ) Settlements (6.0 ) Lapse in statute of limitation (2.8 ) Foreign exchange translation adjustment 0.6 Balance at December 31, 2017 $ 57.6 Increases related to current year tax positions 6.5 Increases related to prior tax positions 2.6 Increases related to acquired tax positions 83.3 Lapse in statute of limitation (9.0 ) Foreign exchange translation adjustment (0.5 ) Balance at December 31, 2018 $ 140.5 We accrued potential penalties and interest on the unrecognized tax benefits of $2.3 million and $0.5 million during 2018 and 2017, respectively, and have recorded a total liability for potential penalties and interest, including penalties and interest related to acquired unrecognized tax benefits, of $25.2 million and $3.6 million at December 31, 2018 and 2017, respectively. Our unrecognized tax benefits decreased from 2016 to 2017 due to settlements with federal and state tax authorities, a lapse in the statute of limitations for certain domestic tax filings and decreases in prior tax positions, offset partially by an increase related to current tax positions. Our unrecognized tax benefits increased from 2017 to 2018 due to acquired uncertain tax positions, primarily consisting of domestic tax positions, and an increase in current and prior year tax positions, offset partially by a lapse in the statute of limitations for certain domestic tax filings. Our unrecognized tax benefits as of December 31, 2018 relate to domestic and foreign taxing jurisdictions and are recorded in other long-term liabilities on our Consolidated Balance Sheet at December 31, 2018. We are subject to examination by tax authorities throughout the world, including such major jurisdictions as the U.S., United Kingdom, India, California, Massachusetts, Missouri and New York. In these major jurisdictions, we are no longer subject to examination by tax authorities prior to tax years ending 2010, 2016, 2016, 2007, 2015, 2015 and 2011, respectively. Our U.S. federal income tax returns are currently under audit or in appeals for the tax periods ended December 31, 2010 through December 31, 2015. Our India income tax returns are currently under audit for tax periods ending March 31, 2016 through March, 2017. Our California state income tax returns are currently under audit or in appeals for the tax periods ended December 31, 2007 through 2016. Our New York state income tax returns are currently under audit for the tax periods ended December 31, 2011 through 2014.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 16—Commitments and Contingencies Our contractual cash obligations for our operations including future minimum lease payments for the non-cancelable term of all operating leases and committed purchase obligations, excluding future sublease income, as of December 31, 2018, are as follows (in millions): December 31, Operating Leases Purchase Obligations Total 2019 $ 83.8 $ 101.8 $ 185.6 2020 76.5 46.7 123.2 2021 71.2 36.8 108.0 2022 61.6 12.7 74.3 2023 and thereafter 257.8 — 257.8 Total $ 550.9 $ 198.0 $ 748.9 Total rental expense was $72.0 million, $47.4 million and $33.3 million for the years ended December 31, 2018, 2017 and 2016, respectively. We sublease office space to other parties under noncancelable leases and we received rental income under these leases of $5.4 million, $5.4 million and $1.3 million for the years ended December 31, 2018, 2017 and 2016, respectively. Future minimum lease receipts under these leases as of December 31, 2018 are as follows (in millions): 2019 $ 5.2 2020 6.0 2021 4.4 2022 2.7 2023 and thereafter 2.6 Total $ 20.9 Legal Proceedings From time to time, we are subject to legal proceedings and claims. In our opinion, we are not involved in any litigation or proceedings that would have a material adverse effect on us or our business. A putative class action suit was filed against DST, the Compensation Committee of DST’s Board of Directors, the Advisory Committee of DST Systems, Inc. 401(k) Profit Sharing Plan (the “Plan”) and certain of DST’s present and/or former officers and directors, alleging breach of fiduciary duties and other violations of the Employee Retirement Income Security Act. On September 1, 2017, a complaint was filed purportedly on behalf of the Plan in the Southern District of New York, captioned Ferguson, et al v. Ruane Cunniff & Goldfarb Inc., et al., naming as defendants the DST, the Compensation Committee of DST’s Board of Directors, the Advisory Committee of the Plan and certain of DST’s present and/or former officers and directors. We intend to defend this case vigorously, and, because it is still in its preliminary stages, has not yet determined what effect this lawsuit will have, if any, on its financial position or results of operations. In connection with an investigation of the Plan and the activities of its fiduciaries, the U.S. Department of Labor through its Employee Benefits Security Administration issued a letter dated February 23, 2018 stating that, based on facts gathered, it appeared that certain fiduciaries of the Plan may have breached their fiduciary obligations and violated certain provisions of the Employee Retirement Income Security Act in connection with the administration of the Plan. The letter stated that if the fiduciaries fail to take corrective action, the matter may be referred to the Office of the Solicitor of Labor for possible legal action. The letter further stated that if the fiduciaries take proper corrective action based on a settlement agreement with the Department of Labor, it will not bring a lawsuit with regard to these issues, and close its investigation without further action. We have not yet determined what effect this letter will have, if any, on its financial position or results of operations. On September 28, 2018, a complaint was filed in the United States District Court for the Southern District of New York captioned Robert Canfield, et al. v. SS&C Technologies Holdings, Inc., et al., Case No. l 8-cv-8913, on behalf of five individual plaintiffs. The Complaint names as defendants SS&C Technologies Holdings, Inc., DST Systems, Inc., The Advisory Committee of the DST Systems, Inc. 401(k) Profit Sharing Plan, The Compensation Committee of the Board of Directors of DST Systems, Inc., and Ruane, Cuniff & Goldfarb, Inc. The underlying claim is the same as in the above-described Ferguson matter, with the exception that it is an individual action and not a putative class action. On November 5, 2018, a complaint was filed in the United States District Court for the Southern District of New York captioned Mark Mendon and Jill Pehlman v. SS&C Technologies Holdings, Inc., et al. individually and on behalf of the DST Systems, Inc. 401(k) Profit Sharing Plan. The Complaint names as defendants SS&C Technologies Holdings, Inc., DST Systems, Inc., The Advisory Committee of the DST Systems, Inc. 401 (k) Profit Sharing Plan, The Compensation Committee of the Board of Directors of DST Systems, Inc., and Ruane, Cuniff & Goldfarb, Inc. The underlying claim is the same as in the above-described Ferguson matter, with the exception that it is an individual action and not a putative class action. DST Systems, Inc., the Advisory Committee of the Plan, and the Compensation Committee of DST’s Board of Directors have been named in approximately 278 substantially similar individual demands for arbitration through February 22, 2019, by former and current DST employees demanding arbitration under the DST Employee Arbitration Program and Agreement. The underlying claim in each is the same as in the above-described Ferguson matter, with the exception that each is an individual claim and not a putative class action. As of February 22, 2019, the parties have jointly submitted 21 of the demands for arbitration to the American Arbitration Association. The remaining demands for arbitration have not yet been submitted.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment and Geographic Information	Note 17—Segment and Geographic Information We operate in one operating segment. Our geographic regions consist of the United States, Canada, Americas excluding the United States and Canada, Europe and Asia Pacific and Japan. Long-lived assets as of December 31, were (in millions): 2018 2017 2016 United States $ 425.2 $ 97.2 $ 76.9 Europe, Middle East and Africa 108.5 4.6 4.2 Asia-Pacific and Japan 24.7 6.0 6.4 Canada 6.0 7.9 6.9 Americas, excluding United States and Canada 0.4 0.4 0.8 Total $ 564.8 $ 116.1 $ 95.2

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	Note 18—Selected Quarterly Financial Data (Unaudited) The following tables set forth selected unaudited quarterly Consolidated Statements of Comprehensive (Loss) Income data for each of the quarters indicated. The unaudited information should be read in conjunction with our Consolidated Financial Statements and related notes included elsewhere in this report. We believe that the following unaudited information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period. First Second Third Fourth Quarter Quarter Quarter Quarter ($ in millions, except per share data) 2018 Revenues $ 421.9 $ 895.8 $ 992.4 $ 1,111.0 Gross profit 192.4 292.3 412.3 473.0 Operating income (loss) 86.8 (50.7 ) 180.6 212.4 Net income (loss) 51.2 (63.7 ) 57.0 58.7 Basic earnings (loss) per share $ 0.25 $ (0.27 ) $ 0.24 $ 0.24 Diluted earnings (loss) per share $ 0.24 $ (0.27 ) $ 0.23 $ 0.23 Cash dividends declared and paid per common share $ 0.07 $ 0.07 $ 0.08 $ 0.08 First Second Third Fourth Quarter Quarter Quarter Quarter ($ in millions, except per share data) 2017 Revenues $ 407.7 $ 411.0 $ 418.2 $ 438.4 Gross profit 190.2 187.3 198.4 213.0 Operating income 89.7 89.9 103.9 113.3 Net income 48.1 51.1 64.2 165.4 Basic earnings per share $ 0.24 $ 0.25 $ 0.31 $ 0.80 Diluted earnings per share $ 0.23 $ 0.24 $ 0.30 $ 0.77 Cash dividends declared and paid per common share $ 0.0625 $ 0.0625 $ 0.07 $ 0.07

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Event	Note 19—Subsequent Event Dividend declared. On February 12, 2019, our Board of Directors declared a quarterly cash dividend of $0.10 per share of common stock payable on March 15, 2019 to stockholders of record as of the close of business on March 1, 2019.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of the Consolidated Financial Statements in conformity with generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used for, but not limited to, collectability of accounts receivable, valuation of non-marketable securities, costs to complete certain contracts, valuation of acquired assets and liabilities, valuation of stock options, income tax accruals and the value of deferred tax assets and liabilities. Estimates are also used to determine the remaining economic lives and carrying value of fixed assets, goodwill and intangible assets. Actual results could differ from those estimates.
Principles of Consolidation	Principles of Consolidation The Consolidated Financial Statements include the accounts of us and our subsidiaries. All significant accounts, transactions and profits between the consolidated companies have been eliminated in consolidation. We consolidate any entity in which we have a controlling financial interest. Under the voting interest model, generally the investor that has voting control (usually more than 50% of an entity’s voting interests) consolidates the entity. Under the variable interest entity (“VIE”) model, the party that has the power to direct the entity’s most significant economic activities and the ability to participate in the entity’s economics consolidates the entity. An entity is considered a VIE if it possesses one of the following characteristics: 1) the entity is thinly capitalized; 2) residual equity holders do not control the entity; 3) equity holders are shielded from economic losses; 4) equity holders do not participate fully in an entity’s residual economics; and 5) the entity was established with non-substantive voting interests. Our investments in private equity funds meet the definition of a VIE; however, the private equity fund investments are not consolidated as we do not have the power to direct the entities’ most significant economic activities. We are the lessee in a series of operating leases covering a large portion of our Kansas City, Missouri-based leased office facilities. The lessors are generally joint ventures (in which we have 50% ownership) that have been established specifically to purchase, finance and engage in leasing activities with the joint venture partners and unrelated third parties. Our analysis of our real estate joint ventures for all periods presented indicate that none qualified as a VIE and, accordingly, they have not been consolidated. Unconsolidated investments in entities over which we do not have control but have the ability to exercise influence over operating and financial policies, if any, are accounted for under the equity method of accounting. Earnings and losses from such investments are recorded on a pre-tax basis, if any.
Revenue Recognition	Revenue Recognition We account for the recognition of our revenue in accordance with the relevant accounting literature, primarily Accounting Standards Update 2014-09, Revenue from Contracts with Customers (ASC 606). Software-enabled Services Revenue We primarily offer software-enabled outsourcing services in which we utilize our own software to offer comprehensive fund administration services for alternative investment managers, including fund manager services, transfer agency services, funds-of-funds services, tax processing and accounting. We also use our own software applications to provide healthcare organizations a variety of medical and pharmacy benefit solutions to satisfy their information processing, quality of care, cost management concerns and payment integrity programs. Our healthcare solutions include claims adjudication, benefit management, care management, business intelligence and other ancillary services. We also offer subscription-based on-demand software applications that are managed and hosted at our facilities. The software-enabled services arrangements provide an alternative for clients who do not wish to install, run and maintain complicated financial software. Under these arrangements, the client does not have the right to take possession of the software, rather, we agree to provide access to our applications, remote use of our equipment to process transactions, access to client’s data stored on our equipment, and connectivity between our environment and the client’s computing systems. Software-enabled services are generally provided under contracts with initial terms of one to five years that require monthly or quarterly payments, and are subject to automatic annual renewal at the end of the initial term unless terminated by either party. In software-enabled services arrangements, the arrangement is a single performance obligation or a stand-ready performance obligation, which in either case is comprised of a series of distinct services that are substantially the same and have the same pattern of transfer to the customer (i.e. distinct days or months of service). We apply a measure of progress (typically time-based) to any fixed consideration and allocate variable consideration to the distinct periods of service based on usage or summarization of account information. These variable payments relate specifically to our efforts to perform the services in the period in which the fee applies. This variability is solely attributed to and resolved as a result of the transfer of these services; these fees are independent of the transfer of past or future goods or services. These fees meet the allocation objective of ASC 606 because they represent the amount of consideration we are entitled to for these services. For our software-enabled services contracts which are cancelable with 90 days’ notice or meet the allocation objective for series performance obligations under ASC 606, we have not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or when we expect to recognize this revenue. License, Maintenance and Related Revenue Agreements We generate revenues in the form of software license fees and related maintenance and services fees. License fees include perpetual license fees and term license fees that differ mainly in the duration over which the customer benefits from the software. Maintenance and services primarily consist of fees for maintenance services (including support and unspecified upgrades and enhancements when and if they are available) and, in some cases, professional services which focus on both deployment and training our customers to fully leverage the use of our products. Under ASC 606, we identify a contract with a customer, we identify the performance obligations in the contract, we determine the transaction price, we allocate the transaction price to each performance obligation in the contract and recognize revenues when (or as) we satisfy a performance obligation. Software license performance obligations are functional intellectual property that are distinct as the user can benefit from the software on its own as defined under ASC 606. Software license revenues are recognized at the point of time when the software license has been delivered. Term license fees are typically due in annual installments at the beginning of each annual period and we record a contract asset for amounts recognized as revenue in excess of amounts billed. We recognize revenues from maintenance ratably over the term of the underlying maintenance contract term because we transfer control evenly by providing a stand-ready service Revenues from professional services consist mostly of services provided on a time and materials basis. The performance obligations are satisfied, and revenues are recognized, over time as the services are provided. In contracts with multiple performance obligations, we account for individual performance obligations separately if they are distinct. We allocate the transaction price to each performance obligation based on our relative standalone selling price out of total consideration of the contract. Standalone selling price is determined utilizing observable prices to the extent available. If the standalone selling price for a performance obligation is not directly observable, we estimate it maximizing the use of observable inputs. For maintenance and support, we determine the standalone selling price based on the price at which we separately sell a renewal contract and the economic relationship between licenses and maintenance. We primarily determine the standalone selling price for sales of licenses using the residual approach. For professional services, we determine the standalone selling prices based on the price at which we separately sell those services. We occasionally enter into license agreements requiring significant customization of our software that are not material to our results of operations. We account for the license and professional service fees under these agreements as a single performance obligation, recognized over time using an input method during the development of the license. This method requires estimates to be made for costs to complete the agreement utilizing an estimate of development man-hours remaining. Revenue is recognized each period based on the hours incurred to date compared to the total hours expected to complete the project. Due to uncertainties inherent in the estimation process, it is at least reasonably possible that completion costs will be revised. Such revisions are recognized in the period in which the revisions are determined. Provisions for estimated losses on uncompleted contracts are determined on a contract-by-contract basis, and are made in the period in which such losses are first estimated or determined. We do not account for significant financing components if the period between when we transfer the promised product or service to the client and when the client pays for that product or service will be one year or less. We record revenue net of any taxes assessed by governmental authorities. Accounts Receivable, net is primarily comprised of billed and unbilled receivables for which we have an unconditional right to consideration, net of an allowance for doubtful accounts. Pre-adoption of ASC 606 We adopted ASC 606 using the modified retrospective method and as such, comparative results for the years ended December 31, 2017 and 2016 were not retrospectively adjusted. For the years ended December 31, 2017 and 2016, we recognized revenue under ASC 605 and ASC 985. Specifically, the software-enabled services revenues were recognized on a monthly basis as the services were provided, when persuasive evidence of an arrangement existed, the price was fixed or determinable and collectability was reasonably assured. Maintenance revenues were recognized ratably over the term of the maintenance agreement. Term license arrangements, many of which included bundled maintenance services, did not have vendor-specific objective evidence for the maintenance element and therefore the total term license fee was recognized ratably over the contractual term of the arrangement. We also recognized perpetual license revenues generally upon delivery of each of the related products and receipt of a signed contract, provided that collection was probable and all other revenue recognition criteria was met. Professional services revenues were generally recognized over the period during which the services were performed.
Costs of Revenues	Costs of Revenues Costs of revenues include all costs, including depreciation and amortization, incurred to produce revenues. Incremental costs of obtaining a contract (e.g., sales commissions) are capitalized and amortized on a basis consistent with the pattern of transfer of goods or services to the customer to which the asset relates over the expected customer relationship period if we expect to recover those costs. Prior to the adoption of ASC 606, we previously expensed these costs over the length of the initial contract excluding any renewals. The expected customer relationship period is determined based on average historical customer relationship periods, including expected renewals. Expected renewal periods are only included in the expected customer relationship period if commission amounts paid upon renewal are not commensurate with amounts paid on the initial contract. Incremental costs of obtaining a contract include only those costs we incur to obtain a contract that we would not have incurred if the contract had not been obtained. We have determined that certain commissions programs meet the requirements to be capitalized. Certain sales commissions associated with multi-year contracts are subject to an employee service requirement. As an action other than each party approving the contract is required to trigger payment of these sales commissions, they are not considered incremental costs to obtain a contract and are expensed as incurred. We expense sales commissions as incurred when the amortization period would have been one year or less.
Research and Development	Research and Development Research and development costs associated with computer software are charged to expense as incurred. Capitalization of internally developed computer software costs in the case of software to be sold begins upon the establishment of technological feasibility based on a working model. Capitalization of internally developed computer software costs in the case of internal use software begins when management authorizes and commits funding to a project and the preliminary design stage has been completed. Our policy is to amortize these costs upon a product’s general release to the client. Amortization of capitalized software costs is calculated by the greater of (a) the ratio that current gross revenues for a product bear to the total of current and anticipated future gross revenues for that product or (b) the straight-line method over the remaining estimated economic life of the product, including the period being reported on, typically two to five years. It is reasonably possible that those estimates of anticipated future gross revenues, the remaining estimated economic life of the product, or both could be reduced significantly due to competitive pressures.
Stock-based Compensation	Stock-based Compensation Using the fair value recognition provisions of relevant accounting literature, stock-based compensation cost is measured at the grant date based on the estimated fair value of the award and is recognized as expense over the appropriate service period. Determining the fair value of stock-based awards requires considerable judgment, including estimating the expected term of stock options and the expected volatility of our stock price. Differences between actual results and these estimates could have a material effect on our financial results. Forfeitures are accounted for as they occur. A deferred income tax asset is recorded over the vesting period as stock compensation expense is recorded for non-qualified option awards. The realizability of the deferred tax asset is ultimately based on the actual value of the stock-based award upon exercise. If the actual value is lower than the fair value determined on the date of grant, then there would be an income tax expense for the portion of the deferred tax asset that is not realizable.
Transaction Expenses	Transaction Expenses Transaction expenses are those costs that are directly related to our acquisition of DST Systems, Inc. (“DST”), as described in Note 7, “Acquisitions.” Transaction expenses consist primarily of certain costs associated with the amendment and restatement of our Credit Agreement, as described in Note 9, “Debt”, investment banker advisory fees, legal fees and other fees.
Income Taxes	Income Taxes We account for income taxes in accordance with the relevant accounting literature. An asset and liability approach is used to recognize deferred tax assets and liabilities for the future tax consequences of items that are recognized in our financial statements and tax returns in different years. A valuation allowance is established against net deferred tax assets if, based on the weight of available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. We account for uncertain tax positions using a two-step approach. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. We consider many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. The Tax Act added a new minimum tax on global intangible low-taxed income (“GILTI”), for which we have elected to factor such amounts into our measurement of deferred taxes under U.S. GAAP. We recorded a deferred tax liability related to GILTI of $27.4 million and $6.7 million at December 31, 2018 and December 31, 2017, respectively. Income Tax Accounting Implications of the Tax Cuts and Jobs Act
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all highly liquid marketable securities with original maturities of three months or less at the date of acquisition to be cash equivalents.
Funds Receivable and Funds Held on Behalf of Clients	Funds receivable and funds held on behalf of clients We hold client funds on behalf of transfer agency clients and pharmacy processing clients in connection with providing our data processing services. End-of-day available client bank balances for full service mutual fund transfer agency clients are invested overnight in credit quality money market funds. Invested balances are returned to the full service mutual fund transfer agency clients’ accounts the following business day. Funds received from clients for the payment of pharmacy claims incurred by its members are invested in credit quality money market funds and certificates of deposit until the claims are paid. Client funding receivables represent amounts due to us for pharmacy claims paid in advance of receiving client funding and for pharmacy claims processed for which client funding requests have not been made. Funds held on behalf of clients in the form of cash, cash equivalents and certificates of deposit with a maturity of less than twelve months are included in Funds receivable and funds held on behalf of clients in the Consolidated Balance Sheet. Funds held on behalf of clients in the form of certificates of deposit with a maturity of greater than twelve months are classified as Investments in the Consolidated Balance Sheet. All funds held on behalf of clients represent assets that are restricted for use. We have included funds held on behalf of clients that meet the definition of restricted cash and restricted cash equivalents in the beginning and end of period balances in the Consolidated Statements of Cash Flows. Cash inflows and outflows related to investment of funds held on behalf of clients are reported on a gross basis as “Investments in securities” and “Proceeds from sales / maturities of investments” in the investing section of the Consolidated Statements of Cash Flows.
Client Funds Obligations	Client funds obligations Client funds obligations represent funds owed to full service mutual fund transfer agency clients for cash balances invested overnight, and our contractual obligations to satisfy client pharmacy claim obligations that are recorded on the balance sheet when incurred, generally after we have processed a claim on behalf of its pharmacy clients.
Restricted Cash	Restricted Cash Restricted cash primarily includes monies held by a bank as security for letters of credit issued due to lease requirements for office space. The letters of credit are expected to be renewed within the next twelve months, and as such, the restricted cash is classified as a current asset on the Consolidated Balance Sheets.
Investments and Unconsolidated Affiliates	Investments and unconsolidated affiliates We hold various investments, including investments in marketable securities, non-marketable securities, and partnership interests in private equity funds, joint ventures and other similar entities. The equity method of accounting is used for investments in entities, partnerships and similar interests (including investments in private equity funds where we are a limited partner and hold a greater than 5% partnership interest in the fund) in which we have significant influence but do not control. Under the equity method, we recognize income or losses from our pro-rata share of these unconsolidated affiliates’ net income or loss, which changes the carrying value of the investment of the unconsolidated affiliate. We measure equity investments in marketable securities, seed capital investments and other investments, other than those accounted for under the equity method of accounting or those that result in consolidation of the investee, at fair value, with changes in the fair value recognized in earnings. We use net asset value as a practical expedient for the fair value of partnership interests in private equity funds that are not accounted for under the equity method of accounting. Investments in non-marketable equity securities that do not have readily determinable fair values and do not qualify for the practical expedient to measure the investment using a net asset value per share are recorded using the measurement alternative in ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities We have certain investments in unconsolidated affiliates accounted for under the equity method of accounting in which our carrying value exceeds the proportionate share of net assets of the unconsolidated affiliate. The total investment in unconsolidated affiliates, including basis differences, is included in Unconsolidated affiliates on the Consolidated Balance Sheet. We record our proportionate share of the results of the unconsolidated affiliates and amortization expense related to basis differences in Equity in earnings of unconsolidated affiliates, net on the Consolidated Statement of Comprehensive (Loss) Income.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation of property, plant and equipment is calculated using a combination of straight-line and accelerated methods over the estimated useful lives of the assets as follows: Description Useful Life Land — Buildings and improvements 40 years Equipment and software 3-5 years Furniture and fixtures 7-10 years Leasehold improvements Shorter of lease term or estimated useful life Maintenance and repairs are expensed as incurred. The costs of sold or retired assets are removed from the related asset and accumulated depreciation accounts and any gain or loss is included in the Consolidated Statements of Comprehensive (Loss) Income.
Goodwill and Intangible Assets	Goodwill and Intangible Assets We test goodwill annually for impairment as of December 31 st Customer relationships, completed technology, trade names and other identifiable intangible assets are amortized over lives ranging from two to 17 years based on the ratio that cash flows for the intangible asset bear to the total of expected future cash flows for the intangible asset.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We evaluate the recoverability of our long-lived assets when there is evidence that events or changes in circumstances have made recovery of the carrying value of the asset or asset group unlikely. An impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset or asset group. We have identified no such impairment losses in the years ended December 31, 2018 and 2017.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments, which potentially subject us to concentrations of credit risk, consist principally of cash, cash equivalents, marketable securities, and trade receivables. We have cash investment policies that limit investments to investment grade securities. Concentrations of credit risk, with respect to trade receivables, are limited due to the fact that our client base is highly diversified. As of December 31, 2018 and 2017, we had no significant concentrations of credit.
International Operations and Foreign Currency	International Operations and Foreign Currency The functional currency of each foreign subsidiary is generally the local currency. Accordingly, assets and liabilities of foreign subsidiaries are translated to U.S. dollars at period-end exchange rates, and capital stock accounts are translated at historical rates. Revenues and expenses are translated using the average rates during the period. The resulting translation adjustments are excluded from net earnings and accumulated as a separate component of stockholders’ equity. Foreign currency transaction gains and losses are included within other income (expense) in the Consolidated Statements of Comprehensive (Loss) Income in the periods in which they occur.
Comprehensive (Loss) Income	Comprehensive (Loss) Income Our comprehensive (loss) income consists of net income and foreign currency translation adjustments, which are presented in the Consolidated Statement of Comprehensive (Loss) Income, net of tax and reclassifications to earnings. The accumulated balance of other comprehensive (loss) income is reported separately from retained earnings and additional paid-in capital in the equity section of the Consolidated Balance Sheets. Total comprehensive (loss) income consists of net income and other accumulated comprehensive (loss) income disclosed in the equity section of the Consolidated Balance Sheets.
Treasury Stock	Treasury Stock Treasury stock purchases are accounted for under the cost method and are included as a deduction from equity in the Stockholders’ Equity section of the Consolidated Balance Sheets. Under the cost method, the price paid for the stock is charged to the treasury stock account.
Contingencies	Contingencies Loss contingencies from legal proceedings and claims may occur from government investigations, shareholder lawsuits, contractual claims, tax and other matters. Accruals are recognized when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. Gain contingencies (including contingent proceeds related to business divestitures) are not recognized until realized. Legal fees are expensed as incurred.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-15, Classification of Certain Cash Receipts and Cash Payments In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606)
Recent Accounting Pronouncements Not Yet Effective	Recent Accounting Pronouncements Not Yet Effective In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) recognize the majority of our operating lease commitments as operating lease liabilities and assets upon adoption, which will result in an increase in the assets and liabilities recorded on our Consolidated Balance Sheet, but will not have a material impact on our Consolidated . The new standard provides for a number of optional practical expedients in transition. We will elect the practical expedients, which permit us to not reassess prior conclusions about lease identification, lease classification and initial direct costs under the new standard. We do not expect to elect the “use-of hindsight” practical expedient to determine the lease term or in assessing the likelihood that a lease purchase option will be exercised. The new standard also provides practical expedients for an entity’s ongoing accounting. We currently expect to elect the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we will not recognize right-of-use right-of-use right-of-use In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Estimated Useful Lives of the Assets	Depreciation of property, plant and equipment is calculated using a combination of straight-line and accelerated methods over the estimated useful lives of the assets as follows: Description Useful Life Land — Buildings and improvements 40 years Equipment and software 3-5 years Furniture and fixtures 7-10 years Leasehold improvements Shorter of lease term or estimated useful life

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Summary of Accounts Receivable	Accounts receivable are as follows (in millions): December 31, 2018 2017 Accounts receivable $ 516.4 $ 179.0 Unbilled accounts receivable 174.7 71.6 Allowance for doubtful accounts (9.4 ) (6.7 ) Total accounts receivable, net $ 681.7 $ 243.9
Schedule of Allowance for Doubtful Accounts	The following table represents the activity for the allowance for doubtful accounts (in millions): Year Ended December 31, 2018 2017 2016 Balance at beginning of period $ 6.7 $ 5.9 $ 3.0 Charge to costs and expenses 4.0 2.4 3.5 Write-offs, net of recoveries (1.3 ) (1.8 ) (0.4 ) Other adjustments 0.0 0.2 (0.2 ) Balance at end of period $ 9.4 $ 6.7 $ 5.9

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Schedule of Property, Plant and Equipment and Related Accumulated Depreciation	Property, plant and equipment and the related accumulated depreciation are as follows (in millions): December 31, 2018 2017 Land $ 54.8 $ 2.7 Building and improvements 309.5 59.9 Equipment, furniture, and fixtures 384.7 138.8 749.0 201.4 Less: accumulated depreciation and amortization (195.8 ) (100.4 ) Total property, plant and equipment, net $ 553.2 $ 101.0

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Summary of Investments	Investments are as follows (in millions): December 31, 2018 Partnership interests in private equity funds $ 102.1 Marketable equity securities 32.6 Non-marketable equity securities 45.0 Seed capital investments 10.3 Other investments 0.5 Total investments $ 190.5
Schedule of Realized and Unrealized Gains and Losses on Investments	Realized and unrealized gains and losses for our equity securities are as follows (in millions): Year Ended December 31, 2018 Unrealized losses on equity securities held as of the end of the period $ (4.5 ) Realized gains for equity securities sold during the period 0.9 Total losses recognized in other income, net $ (3.6 )
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table present assets and liabilities measured at fair value on a recurring basis (in millions): Fair Value Measurements at Reporting Date Using December 31, 2018 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 558.0 $ 558.0 $ — $ — Marketable equity securities (2) 32.6 32.6 — — Seed capital investments (2) 10.3 10.3 — — Deferred compensation liabilities (3) (23.3 ) (23.3 ) — — Derivative instruments (4) (0.3 ) — (0.3 ) — Total $ 577.3 $ 577.6 $ (0.3 ) $ — _____________________________________________________ (1) Included in Cash and cash equivalents and Funds receivable and funds held on behalf of clients on the Consolidated Balance Sheet. (2) Included in Investments on the Consolidated Balance Sheet. (3) Included in Other long-term liabilities on the Consolidated Balance Sheet. (4) Included in Other accrued expenses on the Consolidated Balance Sheet.

Unconsolidated Affiliates (Tabl

Unconsolidated Affiliates (Tables)	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Schedule of Investments in Unconsolidated Affiliates	Investments in unconsolidated affiliates are as follows (in millions): Carrying Value Excess carrying value of investment over proportionate share of net assets Ownership Percentage December 31, 2018 December 31, 2018 International Financial Data Services L.P. 50% $ 93.1 $ 48.3 Pershing Road Development Company, LLC 50% 79.1 77.7 Broadway Square Partners, LLP 50% 53.0 33.1 Other unconsolidated affiliates 14.1 — Total $ 239.3 $ 159.1
Schedule of Equity in Earnings of Unconsolidated Affiliates	Equity in earnings of unconsolidated affiliates are as follows (in millions): Year Ended December 31, 2018 International Financial Data Services L.P. $ 2.9 Pershing Road Development Company, LLC 0.2 Broadway Square Partners, LLP (1.5 ) Other unconsolidated affiliates 0.5 Total $ 2.1
Schedule of Related Party Transactions and Balances Outstanding With Our Related Parties	The following tables summarize related party transactions and balances outstanding with our related parties, which is entirely comprised of transactions with our unconsolidated affiliates (in millions): Year Ended December 31, 2018 Operating revenues from related parties $ 5.6 Amounts paid to related parties (1) 14.4 Distributions received from related parties 11.8 December 31, 2018 Outstanding advances/loans to related parties $ 6.1 Trade accounts receivable from related parties 1.2 Total amounts receivable from related parties $ 7.3 Amounts payable to related parties $ — (1) Excludes amounts paid to our unconsolidated joint ventures related to loans, advancements and other capital investments.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Summary of Allocation of Purchase Price for Acquisitions of Acquiree	The following summarizes the preliminary allocation of the purchase price for the 2018 acquisitions of Intralinks, Eze, CACEIS and DST. The assets and liabilities pending finalization include the valuation of acquired tangible and intangible assets and the evaluation of taxes. The following also summarizes the final allocation of the purchase price for the 2017 acquisition of CommonWealth (in millions): Intralinks Eze CACEIS DST CommonWealth Accounts receivable $ 58.3 $ 45.0 $ 1.5 $ 406.8 $ 0.8 Fixed assets 8.0 15.9 0.4 507.4 0.1 Other assets 31.9 8.2 0.4 386.4 0.2 Investments — — — 474.0 — Acquired client relationships and contracts 646.1 463.8 9.8 1,889.1 6.7 Completed technology 123.2 168.1 — 550.0 — Trade names 43.1 13.0 — 139.0 0.1 Non-compete agreements — — — 43.0 — Goodwill 823.4 838.5 9.7 2,643.8 10.9 Current portion of long-term debt — — — (605.8 ) — Accounts payable (5.9 ) (3.3 ) (0.1 ) (98.3 ) (0.1 ) Accrued employee compensation and benefits (45.6 ) (17.0 ) (0.3 ) (174.9 ) — Deferred revenue (35.3 ) (0.9 ) (0.1 ) (34.2 ) — Deferred income taxes (176.4 ) (77.1 ) (1.3 ) (760.4 ) (1.8 ) Long-term debt — — — (29.4 ) — Client funds obligations — — — (376.2 ) — Other liabilities assumed (18.8 ) (5.0 ) (0.3 ) (298.5 ) (0.3 ) Consideration paid, net of cash acquired $ 1,452.0 $ 1,449.2 $ 19.7 $ 4,661.8 $ 16.6
Schedule of Severance Expense Recognized	The amount of severance expense recognized in the Company’s Consolidated Statement of Comprehensive (Loss) Income for 2018 was as follows (in millions): For the Year Ended December 31, Consolidated Statements of Comprehensive (Loss) Income Classification 2018 Cost of software-enabled services $ 38.3 Cost of license, maintenance and other related 0.5 Total cost of revenues 38.8 Selling and marketing 3.5 Research and development 12.7 General and administrative 7.6 Total operating expenses 23.8 Total severance expense $ 62.6
Summary of Unaudited Pro Forma Information	The following unaudited pro forma condensed consolidated results of operations are provided for illustrative purposes only and assume that the acquisitions of Intralinks, Eze, CACEIS and DST occurred on January 1, 2017 and CommonWealth and Modestspark occurred on January 1, 2016, after giving effect to certain adjustments, including amortization of intangibles, interest, transaction costs and tax effects. This unaudited pro forma information (in millions, except per share data) should not be relied upon as being indicative of the historical results that would have been obtained if the acquisitions had actually occurred on that date, nor of the results that may be obtained in the future. Year Ended December 31, 2018 2017 Revenues $ 4,624.7 $ 4,501.6 Net income $ 103.1 $ 120.8 Basic EPS $ 0.44 $ 0.59 Diluted EPS $ 0.42 $ 0.57 Basic weighted average number of common shares outstanding 232.5 204.9 Diluted weighted average number of common and common equivalent shares outstanding 243.7 211.6

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Changes in Goodwill	The following table summarizes changes in goodwill (in millions): Balance at December 31, 2016 $ 3,652.7 2017 acquisitions 13.3 Adjustments to prior acquisitions (0.6 ) Effect of foreign currency translation 42.4 Balance at December 31, 2017 $ 3,707.8 2018 acquisitions 4,315.4 Adjustments to prior acquisitions 0.2 Effect of foreign currency translation (165.4 ) Balance at December 31, 2018 $ 7,858.0
Summary of the Components of Intangible Assets	A summary of the components of intangible assets is as follows (in millions): December 31, 2018 2017 Customer relationships $ 4,618.4 $ 1,665.8 Completed technology 1,379.6 550.9 Trade names 255.6 61.1 Other 45.7 2.8 Total intangible assets 6,299.3 2,280.6 Less: accumulated amortization (1,338.0 ) (938.8 ) Total intangible assets, net $ 4,961.3 $ 1,341.8
Schedule of Estimated Amortization Expense, Related to Intangible Assets	Total estimated amortization expense, related to intangible assets, for each of the next five years and thereafter, as of December 31, 2018, is expected to approximate (in millions): Year Ending December 31, 2019 $ 632.8 2020 571.3 2021 510.2 2022 476.9 2023 442.9 Thereafter 2,327.2 Total $ 4,961.3

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Component of Debt	At December 31, 2018 and 2017, debt consisted of the following (in millions): December 31, 2018 2017 Senior secured credit facilities, weighted-average interest rate of 4.77% and 3.75%, respectively $ 8,319.1 $ 1,492.2 5.875% senior notes due 2023 — 600.0 Other indebtedness 28.2 — Unamortized original issue discount and debt issuance costs (91.3 ) (47.0 ) 8,256.0 2,045.2 Less current portion of long-term debt 87.5 37.9 Long-term debt $ 8,168.5 $ 2,007.3
Schedule of Carrying Amounts and Fair Values of Financial Instruments	The carrying amounts and fair values of financial instruments are as follows (in millions): December 31, 2018 December 31, 2017 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 8,319.1 $ 7,847.4 $ 1,492.2 $ 1,500.8 5.875% senior notes due 2023 — — 600.0 631.3 Other indebtedness 28.2 28.3 — —
Schedule of Annual Maturities of Long-Term Debt During Next Five Years and Thereafter	At December 31, 2018, annual maturities of long-term debt during the next five years and thereafter are as follows (in millions): Year ending December 31, 2019 $ 87.4 2020 106.5 2021 84.8 2022 578.4 2023 and thereafter 7,490.2 Total $ 8,347.3

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax	Other comprehensive loss. Accumulated other comprehensive loss balances, net of tax consist of the following (in millions): Foreign Currency Translation Accumulated Other Comprehensive Loss Balance, December 31, 2016 $ (139.1 ) $ (139.1 ) Net current period other comprehensive income 56.4 56.4 Balance, December 31, 2017 $ (82.7 ) $ (82.7 ) Net current period other comprehensive loss (260.3 ) (260.3 ) Balance, December 31, 2018 $ (343.0 ) $ (343.0 )
Schedule of Adjustments to Accumulated Other Comprehensive (Loss) Income	Adjustments to accumulated other comprehensive (loss) income attributable to us are as follows (in millions): Year Ended December 31, 2018 Year Ended December 31, 2017 Year Ended December 31, 2016 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Cumulative translation adjustments Current period translation adjustments $ (260.9 ) $ 0.6 $ 56.9 $ (0.5 ) $ (55.7 ) $ (0.2 ) Net cumulative translation adjustments (260.9 ) 0.6 56.9 (0.5 ) (55.7 ) (0.2 ) Total other comprehensive (loss) income $ (260.9 ) $ 0.6 $ 56.9 $ (0.5 ) $ (55.7 ) $ (0.2 )

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2018
Disaggregation of Revenues by Geography and Source	The following table disaggregates our revenues by geography (in millions): Year Ended December 31, 2018 2017 (1) 2016 (1) United States $ 2,479.8 $ 1,222.4 $ 1,081.3 United Kingdom 503.9 115.8 105.3 Asia-Pacific and Japan 145.8 112.7 90.1 Europe (excluding United Kingdom), Middle East and Africa 145.4 102.1 101.3 Canada 96.3 76.4 65.7 Americas, excluding United States and Canada 49.9 45.9 37.7 Total $ 3,421.1 $ 1,675.3 $ 1,481.4 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. The following table disaggregates our revenues by source (in millions): Year Ended December 31, 2018 2017 (1) 2016 (1) Software-enabled services $ 2,798.9 $ 1,114.0 $ 956.8 Maintenance and term licenses 508.8 463.6 414.7 Perpetual licenses 29.5 19.8 23.9 Professional services 83.9 77.9 86.0 Total $ 3,421.1 $ 1,675.3 $ 1,481.4 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method.
ASU 2014-09 [Member]
Impact of Adoption of ASC 606 on Consolidated Statement of Comprehensive (Loss) Income	The impact of adoption of ASC 606 on our Consolidated Statement of Comprehensive (Loss) Income was as follows (in millions): Year Ended December 31, 2018 As Reported Without adoption of ASC 606 Effect of Change Revenues: License, maintenance and related $ 622.2 $ 590.0 $ 32.2 Operating expenses: Selling and marketing $ 211.0 $ 214.4 $ (3.4 )
Impact of Adoption of ASC 606 on Consolidated Balance Sheet	The impact of adoption of ASC 606 on our Consolidated Balance Sheet was as follows (in millions): As of December 31, 2018 As Reported Balance without adoption of ASC 606 Effect of Change Assets: Accounts receivable, net $ 681.7 $ 686.8 $ (5.1 ) Contract asset (current) 18.5 — 18.5 Prepaid expenses and other current assets 154.5 147.9 6.6 Contract asset (non-current) 31.5 — 31.5 Liabilities: Deferred revenue $ 245.7 $ 295.8 $ (50.1 ) Other long-term liabilities 235.5 233.3 2.2

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Stock-Based Compensation Expense Recognized	Total stock options, SARs, RSUs and RSAs. The amount of stock-based compensation expense recognized in our Consolidated Statements of Comprehensive (Loss) Income for the years ended December 31, 2018, 2017 and 2016 was as follows (in millions): Year Ended December 31, 2018 Year Ended December 31, 2017 Year Ended December 31, 2016 Consolidated Statements of Comprehensive (Loss) Income Classification Options, SARs RSUs RSAs Total Options, SARs RSUs RSAs Total Options, SARs RSUs RSAs Total Cost of software-enabled services $ 25.7 $ 13.7 $ — $ 39.4 $ 11.1 $ 0.1 $ — $ 11.2 $ 10.1 $ 0.1 $ — $ 10.2 Cost of license, maintenance and other related 3.9 0.8 — 4.7 3.6 0.6 — 4.2 3.5 1.5 — 5.0 Total cost of revenues 29.6 14.5 — 44.1 14.7 0.7 — 15.4 13.6 1.6 — 15.2 Selling and marketing 7.3 4.5 — 11.8 8.5 1.0 0.1 9.6 8.9 2.4 0.2 11.5 Research and development 8.0 1.0 — 9.0 6.2 1.3 — 7.5 6.0 2.3 — 8.3 General and administrative 16.1 15.9 — 32.0 8.6 0.4 — 9.0 11.3 4.2 — 15.5 Total operating expenses 31.4 21.4 — 52.8 23.3 2.7 0.1 26.1 26.2 8.9 0.2 35.3 Total stock-based compensation expense $ 61.0 $ 35.9 $ — $ 96.9 $ 38.0 $ 3.4 $ 0.1 $ 41.5 $ 39.8 $ 10.5 $ 0.2 $ 50.5
Summary of Stock Option and SAR Activity	The following table summarizes stock option and SAR activity as of and for the years ended December 31, 2018, 2017 and 2016 (share data in millions): Weighted Average Shares Exercise Price Outstanding at December 31, 2015 30.2 $ 20.64 Granted (1) 2.4 $ 30.39 Cancelled/forfeited (1.6 ) $ 31.15 Exercised (6.0 ) $ 7.53 Outstanding at December 31, 2016 25.0 $ 24.04 Granted (2) 11.5 $ 36.63 Cancelled/forfeited (1.4 ) $ 31.59 Exercised (3.8 ) $ 19.08 Outstanding at December 31, 2017 31.3 $ 28.92 Granted (2) 13.2 $ 47.50 Equity awards assumed from DST 0.7 $ 48.85 Cancelled/forfeited (1.4 ) $ 38.56 Exercised (4.0 ) $ 24.71 Outstanding at December 31, 2018 39.8 $ 35.48 (1) Of the grants during 2016, 1.0 million were granted under the Amended 2014 Plan and 1.4 million were granted under the 2008 Plan. (2) Granted under the Amended 2014 Plan.
Summary of RSU Activity	The following table summarizes RSU activity as of and for the years ended December 31, 2018, 2017 and 2016 (share data in millions): Weighted Average Grant Date Shares Fair Value Outstanding at December 31, 2015 1.0 $ 31.01 Granted — $ — Cancelled/forfeited (0.1 ) $ 31.22 Vested (0.5 ) $ 30.95 Outstanding at December 31, 2016 0.4 $ 31.06 Granted — $ — Cancelled/forfeited — $ 31.36 Vested (0.2 ) $ 31.03 Outstanding at December 31, 2017 0.2 $ 31.04 Granted — $ 50.62 Equity awards assumed from DST 2.0 $ 50.71 Cancelled/forfeited — $ 48.71 Vested (0.8 ) $ 46.45 Outstanding at December 31, 2018 1.4 $ 50.44
Summary of Vested Stock Options and SARs Outstanding that are Currently Exercisable and Stock Options and SARs Outstanding that are Expected to Vest	The following table summarizes information about vested stock options and SARs outstanding that are currently exercisable and stock options and SARs outstanding that are expected to vest at December 31, 2018: Outstanding, Vested Stock Options and SARs Currently Exercisable Outstanding Stock Options and SARs Expected to Vest Weighted Weighted Weighted Average Weighted Average Average Aggregate Remaining Average Aggregate Remaining Exercise Intrinsic Contractual Exercise Intrinsic Contractual Shares Price Value Term Shares Price Value Term (In millions) (In millions) (Years) (In millions) (In millions) (Years) 17.5 $ 25.85 $ 338.0 5.90 39.8 $ 35.47 $ 419.4 7.75
Time-Based Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of Weighted-Average Assumptions Using Black-Scholes Option-Pricing Model	For the time-based options and SARs valued using the Black-Scholes option-pricing model, we used the following weighted-average assumptions: Time-Based awards 2018 2017 2016 Expected term to exercise (years) 4.0 4.0 4.0 Expected volatility 25.26 % 25.61 % 27.64 % Risk-free interest rate 2.67 % 1.92 % 1.30 % Expected dividend yield 0.70 % 0.73 % 0.82 %

Basic and Diluted Earnings pe_2

Basic and Diluted Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted EPS	The following table sets forth the computation of basic and diluted EPS (in millions, except per share amounts): Year Ended December 31, 2018 2017 2016 Net income $ 103.2 $ 328.9 $ 131.0 Shares: Weighted average common shares outstanding — used in calculation of basic EPS 232.5 204.9 200.3 Weighted average common stock equivalents — options and restricted shares 11.2 6.7 5.5 Weighted average common and common equivalent shares outstanding — used in calculation of diluted EPS 243.7 211.6 205.8 Earnings per share - Basic $ 0.44 $ 1.60 $ 0.65 Earnings per share - Diluted $ 0.42 $ 1.55 $ 0.64

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Sources of Income Before Income Taxes	The sources of income before income taxes were as follows (in millions): Year Ended December 31, 2018 2017 2016 U.S. $ (10.9 ) $ 153.8 $ 68.2 Foreign 136.0 128.9 95.4 Income before income taxes $ 125.1 $ 282.7 $ 163.6
Component of Income Tax Provision (Benefit)	The income tax provision (benefit) consists of the following (in millions): Year Ended December 31, 2018 2017 2016 Current: Federal $ 66.4 $ 81.1 $ 47.6 Foreign 37.8 21.4 18.9 State 23.5 3.3 13.9 Total 127.7 105.8 80.4 Deferred: Federal (75.4 ) (144.7 ) (38.6 ) Foreign 0.2 (2.8 ) (4.1 ) State (30.6 ) (4.5 ) (5.1 ) Total (105.8 ) (152.0 ) (47.8 ) Total $ 21.9 $ (46.2 ) $ 32.6
Summary of Reconciliation Between Expected Tax Expense and Actual Tax Provision (Benefit)	The reconciliation between the expected tax expense and the actual tax provision (benefit) is computed by applying the U.S. federal corporate income tax rate of 21% (35% for years ended December 31, 2017 and 2016) to income before income taxes as follows (in millions): Year Ended December 31, 2018 2017 2016 Computed “expected” tax expense $ 26.3 $ 98.9 $ 57.3 (Decrease) increase in income tax expense resulting from: State income taxes (net of federal income tax benefit) (6.0 ) 7.5 5.6 Foreign operations 10.7 (36.2 ) (33.6 ) Enactment of Tax Act — (88.0 ) — Effects of stock based compensation (14.6 ) (13.6 ) — Effect of valuation allowance 4.6 (3.3 ) 2.1 Uncertain tax positions (0.9 ) (8.2 ) 6.5 Tax credits (4.0 ) (0.6 ) (3.7 ) Other 5.8 (2.7 ) (1.6 ) Provision (benefit) provision for income taxes $ 21.9 $ (46.2 ) $ 32.6
Components of Deferred Income Taxes	The components of deferred income taxes at December 31, 2018 and 2017 are as follows (in millions): 2018 2017 Deferred Deferred Deferred Deferred Tax Tax Tax Tax Assets Liabilities Assets Liabilities Net operating loss carryforwards 54.8 — 24.2 — Deferred compensation 47.6 — 22.4 — Tax credit carryforwards 34.6 — 26.3 — Accrued expenses 25.3 — 13.3 — Other 24.8 — 0.9 — Customer relationships — 834.4 — 220.8 Other intangible assets — 204.5 — 53.7 Unconsolidated investments — 134.4 0.6 — Acquired technology — 66.5 — 53.3 Trade names — 49.9 — 6.3 Property and equipment — 43.4 — 6.3 Unremitted foreign earnings — 9.0 — 7.2 Deferred revenue — 5.7 — 0.2 Total 187.1 1,347.8 87.7 347.8 Valuation allowance (36.2 ) — (21.1 ) — Total $ 150.9 $ 1,347.8 $ 66.6 $ 347.8
Summary of Activity Related to Company's Unrecognized Tax Benefits	The following table summarizes the activity related to our unrecognized tax benefits for the years ended December 31, 2018 and 2017 (in millions): Balance at December 31, 2016 $ 63.0 Increases related to current year tax positions 7.6 Decreases related to prior tax positions (4.8 ) Settlements (6.0 ) Lapse in statute of limitation (2.8 ) Foreign exchange translation adjustment 0.6 Balance at December 31, 2017 $ 57.6 Increases related to current year tax positions 6.5 Increases related to prior tax positions 2.6 Increases related to acquired tax positions 83.3 Lapse in statute of limitation (9.0 ) Foreign exchange translation adjustment (0.5 ) Balance at December 31, 2018 $ 140.5

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments of Operating Leases and Committed Purchase Obligations, Excluding Future Sublease Income	Our contractual cash obligations for our operations including future minimum lease payments for the non-cancelable term of all operating leases and committed purchase obligations, excluding future sublease income, as of December 31, 2018, are as follows (in millions): December 31, Operating Leases Purchase Obligations Total 2019 $ 83.8 $ 101.8 $ 185.6 2020 76.5 46.7 123.2 2021 71.2 36.8 108.0 2022 61.6 12.7 74.3 2023 and thereafter 257.8 — 257.8 Total $ 550.9 $ 198.0 $ 748.9
Schedule of Future Minimum Lease Receipts under these Leases	Future minimum lease receipts under these leases as of December 31, 2018 are as follows (in millions): 2019 $ 5.2 2020 6.0 2021 4.4 2022 2.7 2023 and thereafter 2.6 Total $ 20.9

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Summary of Long-lived Assets	Long-lived assets as of December 31, were (in millions): 2018 2017 2016 United States $ 425.2 $ 97.2 $ 76.9 Europe, Middle East and Africa 108.5 4.6 4.2 Asia-Pacific and Japan 24.7 6.0 6.4 Canada 6.0 7.9 6.9 Americas, excluding United States and Canada 0.4 0.4 0.8 Total $ 564.8 $ 116.1 $ 95.2

Selected Quarterly Financial _2

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary of Unaudited Quarterly Results	The following tables set forth selected unaudited quarterly Consolidated Statements of Comprehensive (Loss) Income data for each of the quarters indicated. The unaudited information should be read in conjunction with our Consolidated Financial Statements and related notes included elsewhere in this report. We believe that the following unaudited information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period. First Second Third Fourth Quarter Quarter Quarter Quarter ($ in millions, except per share data) 2018 Revenues $ 421.9 $ 895.8 $ 992.4 $ 1,111.0 Gross profit 192.4 292.3 412.3 473.0 Operating income (loss) 86.8 (50.7 ) 180.6 212.4 Net income (loss) 51.2 (63.7 ) 57.0 58.7 Basic earnings (loss) per share $ 0.25 $ (0.27 ) $ 0.24 $ 0.24 Diluted earnings (loss) per share $ 0.24 $ (0.27 ) $ 0.23 $ 0.23 Cash dividends declared and paid per common share $ 0.07 $ 0.07 $ 0.08 $ 0.08 First Second Third Fourth Quarter Quarter Quarter Quarter ($ in millions, except per share data) 2017 Revenues $ 407.7 $ 411.0 $ 418.2 $ 438.4 Gross profit 190.2 187.3 198.4 213.0 Operating income 89.7 89.9 103.9 113.3 Net income 48.1 51.1 64.2 165.4 Basic earnings per share $ 0.24 $ 0.25 $ 0.31 $ 0.80 Diluted earnings per share $ 0.23 $ 0.24 $ 0.30 $ 0.77 Cash dividends declared and paid per common share $ 0.0625 $ 0.0625 $ 0.07 $ 0.07

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)ReportingUnit	Dec. 31, 2017USD ($)
Accounting Policies [Line Items]
Term of maintenance contract	1 year
Deferred tax liability related to GILTI	$ 27,400,000	$ 6,700,000
Cash equivalents, maturity period	3 months
Goodwill impairment loss	$ 0	0
Number of reporting units | ReportingUnit	2
Goodwill and intangible assets reporting units description	As of December 31, 2018, we had two reporting units, one which includes the DST business, and one which includes the rest of our operations.
Indefinite lived intangible assets	$ 0	0
Impairment of long-lived assets held for use	0	$ 0
ASU 2016-02 [Member]
Accounting Policies [Line Items]
Right-of-use assets for operatng leases	400,000,000
Lease liabilities for operating leases	$ 400,000,000
Credit Concentration Risk [Member] | Trade Receivables [Member]
Accounting Policies [Line Items]
Concentration of credit risk	0.00%	0.00%
Software-enabled Services [Member]
Accounting Policies [Line Items]
Revenue remaining performance obligation, explanation	For our software-enabled services contracts which are cancelable with 90 days’ notice or meet the allocation objective for series performance obligations under ASC 606, we have not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or when we expect to recognize this revenue.
Kansas City, Missouri [Member] | Joint Venture in Leasing Arrangement [Member]
Accounting Policies [Line Items]
Ownership percentage	50.00%
Minimum [Member]
Accounting Policies [Line Items]
Percentage of voting interest held for consolidation	50.00%
Tax benefit realized upon settlement	50.00%
Minimum [Member] | Limited Partner [Member] | Partnership Interests in Private Equity Funds [Member]
Accounting Policies [Line Items]
Ownership percentage	5.00%
Minimum [Member] | Software Development [Member]
Accounting Policies [Line Items]
Completed technology, trade names and other identifiable intangible assets are amortized over lives	2 years
Minimum [Member] | Completed Technology, Trade Names and Other [Member]
Accounting Policies [Line Items]
Completed technology, trade names and other identifiable intangible assets are amortized over lives	2 years
Minimum [Member] | Software-enabled Services [Member]
Accounting Policies [Line Items]
Revenue recognition period	1 year
Maximum [Member]
Accounting Policies [Line Items]
Provisional amounts measurement period	1 year
Maximum [Member] | Software Development [Member]
Accounting Policies [Line Items]
Completed technology, trade names and other identifiable intangible assets are amortized over lives	5 years
Maximum [Member] | Completed Technology, Trade Names and Other [Member]
Accounting Policies [Line Items]
Completed technology, trade names and other identifiable intangible assets are amortized over lives	17 years
Maximum [Member] | Software-enabled Services [Member]
Accounting Policies [Line Items]
Revenue recognition period	5 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives of the Assets (Detail)	12 Months Ended
	Dec. 31, 2018
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	40 years
Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	3 years
Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	5 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	7 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Life	10 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives	Shorter of lease term or estimated useful life

Accounts Receivable, Net - Summ

Accounts Receivable, Net - Summary of Accounts Receivable (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Accounts receivable	$ 516.4	$ 179
Unbilled accounts receivable	174.7	71.6
Allowance for doubtful accounts	(9.4)	(6.7)
Total accounts receivable, net	$ 681.7	$ 243.9

Accounts Receivable, Net - Sche

Accounts Receivable, Net - Schedule of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Balance at beginning of period	$ 6.7	$ 5.9	$ 3
Charge to costs and expenses	4	2.4	3.5
Write-offs, net of recoveries	(1.3)	(1.8)	(0.4)
Other adjustments	0	0.2	(0.2)
Balance at end of period	$ 9.4	$ 6.7	$ 5.9

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment and Related Accumulated Depreciation (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 749	$ 201.4
Less: accumulated depreciation and amortization	(195.8)	(100.4)
Total property, plant and equipment, net	553.2	101
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	54.8	2.7
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	309.5	59.9
Equipment, Furniture, and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 384.7	$ 138.8

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Depreciation expense	$ 100.1	$ 25.9	$ 23.7

Investments - Summary of Invest

Investments - Summary of Investments (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Total investments	$ 190,500,000	$ 0
Partnership Interests in Private Equity Funds [Member]
Schedule of Investments [Line Items]
Total investments	102,100,000
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Total investments	32,600,000
Non Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Total investments	45,000,000
Seed Capital Investments [Member]
Schedule of Investments [Line Items]
Total investments	10,300,000
Other Investments [Member]
Schedule of Investments [Line Items]
Total investments	$ 500,000

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Total investments	$ 190,500,000	$ 0
Investments in private equity funds percentage	77.00%
Private equity fund termination date	2,019
Private equity fund termination extension period	2 years
Unfunded commitments	$ 0
Partnership Interests in Private Equity Funds [Member]
Schedule of Investments [Line Items]
Total investments	102,100,000
Investments, fair value	95,200,000
Equity method investments, fair value	6,900,000
Other Private Equity Fund [Member]
Schedule of Investments [Line Items]
Investments, fair value	$ 1,900,000

Investments - Schedule of Reali

Investments - Schedule of Realized and Unrealized Gains and Losses on Investments (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Investments Debt And Equity Securities [Abstract]
Unrealized losses on equity securities held as of the end of the period	$ (4.5)
Realized gains for equity securities sold during the period	0.9
Total losses recognized in other income, net	$ (3.6)

Investments - Summary of Assets

Investments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] $ in Millions	Dec. 31, 2018USD ($)
Schedule of Investments [Line Items]
Deferred compensation liabilities	$ (23.3)
Derivative instruments	(0.3)
Total	577.3
Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Deferred compensation liabilities	(23.3)
Total	577.6
Significant Other Observable Inputs (Level 2) [Member]
Schedule of Investments [Line Items]
Derivative instruments	(0.3)
Total	(0.3)
Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	558
Money Market Funds [Member] | Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	558
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	32.6
Marketable Equity Securities [Member] | Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	32.6
Seed Capital Investments [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	10.3
Seed Capital Investments [Member] | Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	$ 10.3

Unconsolidated Affiliates - Sch

Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Detail) $ in Millions	Dec. 31, 2018USD ($)
Schedule of Investments [Line Items]
Carrying Value	$ 239.3
Excess carrying value of investment over proportionate share of net assets	$ 159.1
International Financial Data Services L.P. [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Carrying Value	$ 93.1
Excess carrying value of investment over proportionate share of net assets	$ 48.3
Pershing Road Development Company, LLC [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Carrying Value	$ 79.1
Excess carrying value of investment over proportionate share of net assets	$ 77.7
Broadway Square Partners, LLP [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Carrying Value	$ 53
Excess carrying value of investment over proportionate share of net assets	33.1
Other Unconsolidated Affiliates [Member]
Schedule of Investments [Line Items]
Carrying Value	$ 14.1

Unconsolidated Affiliates - S_2

Unconsolidated Affiliates - Schedule of Equity in Earnings of Unconsolidated Affiliates (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates	$ 2.1
International Financial Data Services L.P. [Member]
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates	2.9
Pershing Road Development Company, LLC [Member]
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates	0.2
Broadway Square Partners, LLP [Member]
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates	(1.5)
Other Unconsolidated Affiliates [Member]
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates	$ 0.5

Unconsolidated Affiliates - Add

Unconsolidated Affiliates - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Schedule of Investments [Line Items]
Distributions received return on investment	$ 4.2
International Financial Data Services L.P. [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	15 years
Distributions received return on investment	$ 4.2
International Financial Data Services L.P. [Member] | State Street [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
PRDC, LLC [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	28 years
Distributions received return on investment	$ 7.8
Broadway Square Partners [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	40 years

Unconsolidated Affiliates - S_3

Unconsolidated Affiliates - Schedule of Related Party Transactions and Balances Outstanding With Our Related Parties (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Related Party Transactions [Abstract]
Operating revenues from related parties	$ 5.6
Amounts paid to related parties	14.4
Distributions received from related parties	11.8
Outstanding advances/loans to related parties	6.1
Trade accounts receivable from related parties	1.2
Total amounts receivable from related parties	$ 7.3

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions

Nov. 16, 2018

Oct. 01, 2018

Jun. 01, 2018

Apr. 16, 2018

Oct. 13, 2017

Nov. 30, 2018

Oct. 31, 2017

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2017

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Business Acquisition [Line Items]

Revenues

$ 1,111

$ 992.4

$ 895.8

$ 421.9

$ 438.4

$ 418.2

$ 411

$ 407.7

$ 3,421.1

$ 1,675.3

$ 1,481.4

Net income

58.7

$ 57

$ (63.7)

$ 51.2

$ 165.4

$ 64.2

$ 51.1

$ 48.1

103.2

$ 328.9

$ 131

Intralinks Holdings, Inc. [Member]

Business Acquisition [Line Items]

Business acquisition, effective date of acquisition

Nov. 16, 2018

Consideration paid, net of cash plus the costs of transaction

$ 1,000

Revenues

36.3

Acquired accounts receivable not expected to be collected

7.9

$ 7.9

Intralinks Holdings, Inc. [Member] | Completed Technology [Member]

Business Acquisition [Line Items]

Amortized period

7 years

Intralinks Holdings, Inc. [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Amortized period

12 years

Intralinks Holdings, Inc. [Member] | Trade Name [Member]

Business Acquisition [Line Items]

Amortized period

13 years

Eze [Member]

Business Acquisition [Line Items]

Business acquisition, effective date of acquisition

Oct. 1, 2018

Revenues

$ 69.9

Business acquisition, total consideration

$ 1,450

Business acquisition funded with incremental long term debt

$ 875

Acquired accounts receivable not expected to be collected

7.5

$ 7.5

Eze [Member] | Completed Technology [Member]

Business Acquisition [Line Items]

Amortized period

7 years

Eze [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Amortized period

16 years

Eze [Member] | Trade Name [Member]

Business Acquisition [Line Items]

Amortized period

10 years

CACEIS [Member]

Business Acquisition [Line Items]

Business acquisition, effective date of acquisition

Jun. 1, 2018

Consideration paid, net of cash plus the costs of transaction

$ 20

Revenues

$ 6.4

CACEIS [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Amortized period

16 years

DST [Member]

Business Acquisition [Line Items]

Business acquisition, effective date of acquisition

Apr. 16, 2018

Revenues

$ 1,600

Business acquisition, total consideration

$ 5,100

Net income

82.4

Non-cash consideration related to fair value of unvested acquired equity awards

48.1

Restricted cash and cash equivalents

347

347

Acquired accounts receivable not expected to be collected

$ 6.1

$ 6.1

DST [Member] | Senior Secured Credit Facilities [Member]

Business Acquisition [Line Items]

Amount borrowed in connection with acquisition

7,400

Amount rolled over from existing credit facility

$ 524.5

DST [Member] | Completed Technology [Member]

Business Acquisition [Line Items]

Amortized period

12 years

DST [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Amortized period

14 years

DST [Member] | Trade Name [Member]

Business Acquisition [Line Items]

Amortized period

12 years

DST [Member] | Non-Compete Agreement [Member]

Business Acquisition [Line Items]

Amortized period

2 years

Common Wealth [Member]

Business Acquisition [Line Items]

Business acquisition, effective date of acquisition

Oct. 13, 2017

Business acquisition, total consideration

$ 16.4

Common Wealth [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Amortized period

15 years

Common Wealth [Member] | Trade Name [Member]

Business Acquisition [Line Items]

Amortized period

2 years

Modestspark [Member]

Business Acquisition [Line Items]

Consideration paid, net of cash plus the costs of transaction

$ 2.8

Common Stock [Member] | Intralinks Holdings, Inc. [Member]

Business Acquisition [Line Items]

Business acquisition, common stock shares issued

9.9

9.9

Acquisitions - Summary of Alloc

Acquisitions - Summary of Allocation of Purchase Price for Acquisitions of Acquiree (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Nov. 16, 2018	Oct. 01, 2018	Jun. 01, 2018	Apr. 16, 2018	Dec. 31, 2017	Oct. 13, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 7,858					$ 3,707.8		$ 3,652.7
Intralinks Holdings, Inc. [Member]
Business Acquisition [Line Items]
Accounts receivable		$ 58.3
Fixed assets		8
Other assets		31.9
Goodwill		823.4
Accounts payable		(5.9)
Accrued employee compensation and benefits		(45.6)
Deferred revenue		(35.3)
Deferred income taxes		(176.4)
Other liabilities assumed		(18.8)
Consideration paid, net of cash acquired		1,452
Eze [Member]
Business Acquisition [Line Items]
Accounts receivable			$ 45
Fixed assets			15.9
Other assets			8.2
Goodwill			838.5
Accounts payable			(3.3)
Accrued employee compensation and benefits			(17)
Deferred revenue			(0.9)
Deferred income taxes			(77.1)
Other liabilities assumed			(5)
Consideration paid, net of cash acquired			1,449.2
CACEIS [Member]
Business Acquisition [Line Items]
Accounts receivable				$ 1.5
Fixed assets				0.4
Other assets				0.4
Goodwill				9.7
Accounts payable				(0.1)
Accrued employee compensation and benefits				(0.3)
Deferred revenue				(0.1)
Deferred income taxes				(1.3)
Other liabilities assumed				(0.3)
Consideration paid, net of cash acquired				19.7
DST [Member]
Business Acquisition [Line Items]
Accounts receivable					$ 406.8
Fixed assets					507.4
Other assets					386.4
Investments					474
Goodwill					2,643.8
Current portion of long-term debt					(605.8)
Accounts payable					(98.3)
Accrued employee compensation and benefits					(174.9)
Deferred revenue					(34.2)
Deferred income taxes					(760.4)
Long-term debt					(29.4)
Client funds obligations					(376.2)
Other liabilities assumed					(298.5)
Consideration paid, net of cash acquired					4,661.8
Common Wealth [Member]
Business Acquisition [Line Items]
Accounts receivable							$ 0.8
Fixed assets							0.1
Other assets							0.2
Goodwill							10.9
Accounts payable							(0.1)
Deferred income taxes							(1.8)
Other liabilities assumed							(0.3)
Consideration paid, net of cash acquired							16.6
Acquired Client Relationships and Contracts [Member] | Intralinks Holdings, Inc. [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts		646.1
Acquired Client Relationships and Contracts [Member] | Eze [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts			463.8
Acquired Client Relationships and Contracts [Member] | CACEIS [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts				$ 9.8
Acquired Client Relationships and Contracts [Member] | DST [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts					1,889.1
Acquired Client Relationships and Contracts [Member] | Common Wealth [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts							6.7
Completed Technology [Member] | Intralinks Holdings, Inc. [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts		123.2
Completed Technology [Member] | Eze [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts			168.1
Completed Technology [Member] | DST [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts					550
Trade Names [Member] | Intralinks Holdings, Inc. [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts		$ 43.1
Trade Names [Member] | Eze [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts			$ 13
Trade Names [Member] | DST [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts					139
Trade Names [Member] | Common Wealth [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts							$ 0.1
Non-Compete Agreement [Member] | DST [Member]
Business Acquisition [Line Items]
Acquired client relationships and contracts					$ 43

Acquisitions - Schedule of Seve

Acquisitions - Schedule of Severance Expense Recognized (Detail) - DST [Member] $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	$ 62.6
Total Cost of Revenues [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	38.8
Total Cost of Revenues [Member] | Software-enabled Services [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	38.3
Total Cost of Revenues [Member] | License, Maintenance and Related [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	0.5
Selling and Marketing [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	3.5
Research and Development [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	12.7
General and Administrative [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	7.6
Total Operating Expenses [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	$ 23.8

Acquisitions - Summary of Unaud

Acquisitions - Summary of Unaudited Pro Forma Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Revenues	$ 4,624.7	$ 4,501.6
Net income	$ 103.1	$ 120.8
Basic EPS	$ 0.44	$ 0.59
Diluted EPS	$ 0.42	$ 0.57
Basic weighted average number of common shares outstanding	232.5	204.9
Diluted weighted average number of common and common equivalent shares outstanding	243.7	211.6

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Changes in Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 3,707.8	$ 3,652.7
2017/2018 acquisitions	4,315.4	13.3
Adjustments to prior acquisitions	0.2	(0.6)
Effect of foreign currency translation	(165.4)	42.4
Ending balance	$ 7,858	$ 3,707.8

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Summary of the Components of Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 6,299.3	$ 2,280.6
Less: accumulated amortization	(1,338)	(938.8)
Total intangible assets, net	4,961.3	1,341.8
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	4,618.4	1,665.8
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	1,379.6	550.9
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	255.6	61.1
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 45.7	$ 2.8

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Estimated Amortization Expense, Related to Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2,019	$ 632.8
2,020	571.3
2,021	510.2
2,022	476.9
2,023	442.9
Thereafter	2,327.2
Total intangible assets, net	$ 4,961.3	$ 1,341.8

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Net capitalized software costs	$ 42.6	$ 12.1
Amortization expense related to capitalized software development costs	7.7	5.4	$ 3.5
Completed Technology and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense associated with completed technology and other amortizable intangible assets	$ 410.7	$ 205.9	$ 201.5

Debt - Component of Debt (Detai

Debt - Component of Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Other indebtedness	$ 28.2
Unamortized original issue discount and debt issuance costs	(91.3)	$ (47)
Debt	8,256	2,045.2
Less current portion of long-term debt	87.5	37.9
Long-term debt	8,168.5	2,007.3
Secured Debt [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 8,319.1	1,492.2
Senior Notes [Member] | 5.875% Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt gross		$ 600

Debt - Component of Debt (Paren

Debt - Component of Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Secured Debt [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt, weighted-average interest rate of credit facility	4.77%	3.75%
Senior Notes [Member] | 5.875% Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Debt, interest rate	5.875%	5.875%
Debt, due date	2,023

Debt - Additional Information (

Debt - Additional Information (Detail) £ in Millions	Oct. 01, 2018USD ($)	May 01, 2018USD ($)	Apr. 16, 2018USD ($)	Apr. 16, 2018GBP (£)	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)Tranche	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Nov. 16, 2018USD ($)	Apr. 16, 2018GBP (£)
Debt Instrument [Line Items]
Number of tranche of term loan | Tranche							4
Debt instrument, interest rate terms							The Term Loans and Revolving Credit Facility bear interest, at the election of the borrowers, at the base rate (as defined in the Credit Agreement) or LIBOR, plus the applicable interest rate margin for the credit facility. Amounts drawn on the Revolving Credit Facility initially bear interest at either LIBOR plus 2.25% or at the base rate plus 1.25%, and is subject to a step-down at any time our consolidated net secured leverage ratio is less than 4.75 times, to 2.00% in the case of the LIBOR margin and 1.00% in the case of the base rate margin. The Term B-1 Loan and Term B-2 Loan bear interest at either LIBOR plus 2.25% or at the base rate plus 1.25%. The Term B-3 Loan, Term B-4 Loan and Term B-5 Loan initially bear interest at either LIBOR plus 2.50% or at the base rate plus 1.50%, and are subject to a step-down at any time our consolidated net secured leverage ratio is less than 4.75 times, to 2.25% in the case of the LIBOR margin and 1.25% in the case of the base rate margin.
Redemption/Repayment of debt							$ 3,141,000,000	$ 512,500,000	$ 383,500,000
Debt instrument, outstanding amount					$ 8,256,000,000	$ 8,256,000,000	8,256,000,000	2,045,200,000
Gain (loss) on extinguishment of debt						(44,400,000)	$ (43,300,000)	$ (2,300,000)
Minimum [Member]
Debt Instrument [Line Items]
Percentage of change in cash flows due to debt extinguishment obligation							10.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument term available for borrowings			5 years	5 years
Debt principal amount			$ 250,000,000
Credit facility, amount available					242,400,000	242,400,000	$ 242,400,000
Secured leverage ratio			4.75								4.75
Company amortized to interest expense			$ 0
Revolving Credit Facility [Member] | Minimum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.00%	2.00%
Revolving Credit Facility [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.00%	1.00%
Revolving Credit Facility [Member] | Maximum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.25%	2.25%
Revolving Credit Facility [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.25%	1.25%
Letter of Credit [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 25,000,000
Letter of credit sub-facility, outstanding amount					7,600,000	7,600,000	$ 7,600,000
Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Credit facility, frequency of payments							Quarterly
Senior Secured Credit Facilities [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Credit facility collateral, percentage of capital stock of foreign restricted subsidiaries			65.00%	65.00%
Term B-1 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 518,600,000
Debt maturity date			Jul. 8, 2022	Jul. 8, 2022
Term B-1 Loan [Member] | Senior Secured Credit Facilities [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.25%	2.25%
Term B-1 Loan [Member] | Senior Secured Credit Facilities [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.25%	1.25%
Term B-1 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Principal amount outstanding					514,500,000	514,500,000	$ 514,500,000
Quarterly payments percentage on remaining principal amount			0.25%	0.25%
Term B-2 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 5,900,000
Debt maturity date			Jul. 8, 2022	Jul. 8, 2022
Term B-2 Loan [Member] | Senior Secured Credit Facilities [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.25%	2.25%
Term B-2 Loan [Member] | Senior Secured Credit Facilities [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.25%	1.25%
Term B-2 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Principal amount outstanding					0	0	0
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 5,046,000,000
Debt maturity date			Apr. 16, 2025	Apr. 16, 2025
Secured leverage ratio			4.75								4.75
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.25%	2.25%
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.25%	1.25%
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.50%	2.50%
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.50%	1.50%
Term B-3 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Principal amount outstanding					4,309,600,000	4,309,600,000	4,309,600,000
Quarterly payments percentage on original principal amount			0.25%	0.25%
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 1,800,000,000
Debt maturity date			Apr. 16, 2025	Apr. 16, 2025
Secured leverage ratio			4.75								4.75
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.25%	2.25%
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.25%	1.25%
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.50%	2.50%
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.50%	1.50%
Term B-4 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Principal amount outstanding					$ 1,634,700,000	$ 1,634,700,000	$ 1,634,700,000
Quarterly payments percentage on original principal amount			0.25%	0.25%
5.875% Senior Notes due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt, interest rate					5.875%	5.875%	5.875%	5.875%
Debt, due date							2,023
Principal amount outstanding								$ 600,000,000
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt principal amount	$ 875,000,000									$ 1,000,000,000
Secured leverage ratio	4.75
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.25%
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.25%
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Term B-5 Loan [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Principal amount outstanding					$ 1,860,300,000	$ 1,860,300,000	$ 1,860,300,000
Quarterly payments percentage on original principal amount	0.25%
Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Capitalized financing costs, aggregate amount					55,300,000	$ 55,300,000	$ 55,300,000
Term Loans [Member] | Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Redemption/Repayment of debt					45,000,000
Gain (loss) on extinguishment of debt					$ 1,100,000
DST [Member]
Debt Instrument [Line Items]
Business acquisition, effective date of acquisition			Apr. 16, 2018	Apr. 16, 2018
DST [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Redemption/Repayment of debt		$ 600,400,000
DST [Member] | U.S. Mortgage [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 4,100,000
DST [Member] | U.K. Mortgage [Member]
Debt Instrument [Line Items]
Debt principal amount | £											£ 21
Debt, interest rate					3.10%	3.10%	3.10%
Debt instrument maturity year and month			2020-10	2020-10
Debt instrument, outstanding amount					$ 24,200,000	$ 24,200,000	$ 24,200,000
Debt instrument, periodic principal payment | £				£ 1
Debt instrument, frequency of principal payments							semi-annually

Debt - Schedule of Carrying Amo

Debt - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Carrying Amount [Member] | Senior Secured Credit Facilities [Member]
Financial liabilities:
Credit facility	$ 8,319.1	$ 1,492.2
Carrying Amount [Member] | 5.875% Senior Notes due 2023 [Member]
Financial liabilities:
Senior notes		600
Carrying Amount [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	28.2
Fair Value [Member] | Senior Secured Credit Facilities [Member]
Financial liabilities:
Credit facility	7,847.4	1,500.8
Fair Value [Member] | 5.875% Senior Notes due 2023 [Member]
Financial liabilities:
Credit facility		$ 631.3
Fair Value [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	$ 28.3

Debt - Schedule of Annual Matur

Debt - Schedule of Annual Maturities of Long-Term Debt During Next Five Years and Thereafter (Detail) $ in Millions	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
2,019	$ 87.4
2,020	106.5
2,021	84.8
2,022	578.4
2023 and thereafter	7,490.2
Senior Secured Credit Facilities and Senior Notes Member [Member]
Debt Instrument [Line Items]
Total	$ 8,347.3

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Millions	Nov. 16, 2018shares	May 25, 2016	Mar. 30, 2016shares	Nov. 30, 2018shares	Apr. 30, 2018USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / shares	Dec. 31, 2016USD ($)$ / shares
Class of Stock [Line Items]
Stock split, description						Board of Directors approved a two-for-one stock split to be effected in the form of a stock dividend
Stock split, conversion ratio		2
Proceeds from common stock issuance, net | $					$ 1,400	$ 1,399.1
Quarterly cash dividend paid | $ / shares						$ 0.30	$ 0.265	$ 0.25
Dividends paid on common stock | $						$ 70.9	$ 54.4	$ 50.1
First Quarter Dividend [Member]
Class of Stock [Line Items]
Quarterly cash dividend paid | $ / shares						$ 0.07	$ 0.0625
Dividend paid date						Mar. 15, 2018	Mar. 15, 2017
Dividend record date						Mar. 1, 2018	Mar. 1, 2017
Second Quarter Dividend [Member]
Class of Stock [Line Items]
Quarterly cash dividend paid | $ / shares						$ 0.07	$ 0.0625
Dividend paid date						Jun. 15, 2018	Jun. 15, 2017
Dividend record date						Jun. 1, 2018	Jun. 1, 2017
Third Quarter Dividend [Member]
Class of Stock [Line Items]
Quarterly cash dividend paid | $ / shares						$ 0.08	$ 0.07
Dividend paid date						Sep. 18, 2018	Sep. 15, 2017
Dividend record date						Sep. 4, 2018	Sep. 1, 2017
Fourth Quarter Dividend [Member]
Class of Stock [Line Items]
Quarterly cash dividend paid | $ / shares						$ 0.08	$ 0.07
Dividend paid date						Dec. 17, 2018	Dec. 15, 2017
Dividend record date						Dec. 1, 2018	Dec. 1, 2017
Class A Non-Voting Common Stock [Member]
Class of Stock [Line Items]
Conversion of common stock number of shares converted | shares			2,700,000
Conversion of common stock number of shares issued | shares			2,700,000
Common stock convertible conversion ratio						100.00%
Post Split Basis [Member] | Class A Non-Voting Common Stock [Member]
Class of Stock [Line Items]
Conversion of common stock number of shares issued | shares			5,400,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock shares issued | shares					30,300,000	40,200,000
Common stock offering price to public | $ / shares					$ 47.50
Common Stock [Member] | Intralinks Holdings, Inc. [Member]
Class of Stock [Line Items]
Business acquisition, common stock shares issued | shares	9,900,000			9,900,000
Common Stock [Member] | Underwriters' Option [Member]
Class of Stock [Line Items]
Common stock shares issued | shares					3,900,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 2,686.4	$ 2,258.7	$ 2,105.4
Net current period other comprehensive income (loss)	(260.3)	56.4	(55.9)
Ending balance	4,580	2,686.4	2,258.7
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(82.7)	(139.1)
Net current period other comprehensive income (loss)	(260.3)	56.4
Ending balance	(343)	(82.7)	(139.1)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(82.7)	(139.1)	(83.2)
Net current period other comprehensive income (loss)	(260.3)	56.4
Ending balance	$ (343)	$ (82.7)	$ (139.1)

Stockholders' Equity - Schedu_2

Stockholders' Equity - Schedule of Adjustments to Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Current period translation adjustments, Pretax	$ (260.9)	$ 56.9	$ (55.7)
Net cumulative translation adjustments, Pretax	(260.9)	56.9	(55.7)
Total other comprehensive (loss) income	(260.9)	56.9	(55.7)
Current period translation adjustments, Tax Effect	0.6	(0.5)	(0.2)
Net cumulative translation adjustments, Tax Effect	0.6	(0.5)	(0.2)
Total other comprehensive (loss) income	$ 0.6	$ (0.5)	$ (0.2)

Revenues - Additional Informati

Revenues - Additional Information (Details) - USD ($) $ in Millions	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Retained earnings		$ 847.1	$ 766.9
Cumulative impact on retained earnings, net of tax		47.9
Deferred revenue presented net within contract assets arising from contract		32.4
Deferred revenue recognized		208.7
Revenue expected to be recognized from remaining performance obligations		357
Revenue expected to be recognized from remaining performance obligations in next twelve months		233.5
Effect of Change [Member] | ASU 2014-09 [Member]
Deferred Revenue Arrangement [Line Items]
Retained earnings	$ 65.8
Cumulative impact on retained earnings, net of tax	$ 47.9
Decrease in revenue		$ (39.9)

Revenues - Impact of Adoption o

Revenues - Impact of Adoption of ASC 606 on Consolidated Statement of Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Revenues	$ 1,111	$ 992.4	$ 895.8	$ 421.9	$ 438.4	$ 418.2	$ 411	$ 407.7	$ 3,421.1	$ 1,675.3	$ 1,481.4
Operating expenses:
Selling and marketing									211	118.5	117.1
ASU 2014-09 [Member] | Without adoption of ASC 606 [Member]
Operating expenses:
Selling and marketing									214.4
ASU 2014-09 [Member] | Effect of Change [Member]
Operating expenses:
Selling and marketing									(3.4)
License, Maintenance and Related [Member]
Revenues:
Revenues									622.2	$ 561.3	$ 524.6
License, Maintenance and Related [Member] | ASU 2014-09 [Member] | Without adoption of ASC 606 [Member]
Revenues:
Revenues									590
License, Maintenance and Related [Member] | ASU 2014-09 [Member] | Effect of Change [Member]
Revenues:
Revenues									$ 32.2

Revenues - Impact of Adoption_2

Revenues - Impact of Adoption of ASC 606 on Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets:
Accounts receivable, net	$ 681.7	$ 243.9
Contract asset (current)	18.5
Prepaid expenses and other current assets	154.5	38.7
Contract asset (non-current)	31.5
Liabilities:
Deferred revenue	245.7	204.6
Other long-term liabilities	235.5	$ 118.7
ASU 2014-09 [Member] | Balance without adoption of ASC 606
Assets:
Accounts receivable, net	686.8
Prepaid expenses and other current assets	147.9
Liabilities:
Deferred revenue	295.8
Other long-term liabilities	233.3
ASU 2014-09 [Member] | Effect of Change [Member]
Assets:
Accounts receivable, net	(5.1)
Contract asset (current)	18.5
Prepaid expenses and other current assets	6.6
Contract asset (non-current)	31.5
Liabilities:
Deferred revenue	(50.1)
Other long-term liabilities	$ 2.2

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenues by Geography (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue	$ 1,111	$ 992.4	$ 895.8	$ 421.9	$ 438.4	$ 418.2	$ 411	$ 407.7	$ 3,421.1	$ 1,675.3	$ 1,481.4
United States [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									2,479.8	1,222.4	1,081.3
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									503.9	115.8	105.3
Asia-Pacific and Japan [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									145.8	112.7	90.1
Europe (excluding United Kingdom), Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									145.4	102.1	101.3
Canada [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									96.3	76.4	65.7
Americas, excluding United States and Canada [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									$ 49.9	$ 45.9	$ 37.7

Revenues - Disaggregation of _2

Revenues - Disaggregation of Revenues by Source (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue	$ 1,111	$ 992.4	$ 895.8	$ 421.9	$ 438.4	$ 418.2	$ 411	$ 407.7	$ 3,421.1	$ 1,675.3	$ 1,481.4
Software-enabled Services [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									2,798.9	1,114	956.8
Maintenance and Term Licenses [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									508.8	463.6	414.7
Perpetual Licenses [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									29.5	19.8	23.9
Professional Services [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of revenue									$ 83.9	$ 77.9	$ 86

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 31, 2016	Apr. 30, 2008	Aug. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit from compensation expense	$ 33,700,000	$ 10,300,000	$ 18,400,000
Cash received from exercise of stock options	84,900,000	60,200,000	39,200,000
Income tax benefit from stock awards	34,600,000	25,000,000	62,100,000
Stock-based compensation expense	96,900,000	41,500,000	50,500,000
DST [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	49,300,000
One-time charges for accelerated vesting awards	31,100,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 35,900,000	$ 3,400,000	10,500,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, granted	0	0
Employee service share-based compensation period for recognition of expense	3 months	15 months
Stock-based compensation expense		$ 100,000	$ 200,000
Time-Based Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based incentive plan, description	Time-based options and SARs granted under the 2006 Plan, the 2008 Plan, the 2014 Plans generally vest 25% on the first anniversary of the grant date and 1/36th of the remaining balance each month thereafter for 36 months. All outstanding time-based options and SARs vest upon a change in control, subject to certain conditions.
Option vesting period	36 months
Employee service share-based compensation period for recognition of expense	3 years 3 months 18 days	3 years 1 month 6 days
Awards granted, weighted average granted fair value	$ 10.38	$ 7.86	$ 6.62
Awards vested, fair value	$ 50,400,000	$ 32,100,000	$ 41,400,000
Non-cash stock-based compensation expense not yet recognized	165,200,000	117,900,000
Total intrinsic value of the awards	$ 107,600,000	71,100,000	$ 141,200,000
Time-Based Options and SARs [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based incentive plan vesting percentage	25.00%
Time-Based Options and SARs [Member] | Tranche Two and Thereafter [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based incentive plan vesting percentage	0.0208%
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based Compensation not yet Recognized	$ 100,000	$ 100,000
Amended 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial authorized shares				24,000,000
2014 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, granted	24,970	0
Stock based Compensation not yet Recognized	$ 600,000	$ 1,500,000
Employee service share-based compensation period for recognition of expense	1 year 9 months 18 days	9 months 18 days
2014 Plan [Member] | Restricted Stock Units (RSUs) [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based incentive plan vesting percentage	50.00%
2014 Plan [Member] | Restricted Stock Units (RSUs) [Member] | Tranche Two and Thereafter [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based incentive plan vesting percentage	0.01389%
2014 Plan [Member] | Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	36 months
2014 Plan [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under equity-based incentive plan				6
Equity based incentive plan expiry period from date of grant	10 years
2008 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial authorized shares					2.8
2008 Plan [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under equity-based incentive plan					21.8
Equity based incentive plan expiry period from date of grant	10 years
Equity-based incentive plan, description	our common stock and an annual increase to be added on the first day of each of our fiscal years during the term of the 2008 Plan beginning in fiscal 2009 equal to the lesser of (i) 2.8 million shares of common stock, (ii) 2% of the outstanding shares on such date or (iii) an amount determined by our Board of Directors. Under the 2008 Plan, which became effective in July 2008, the exercise price of awards is set on the grant date and may not be less than the fair market value per share on such date. Generally, awards expire ten years from the date of grant. We have granted time-based options and RSUs under the 2008 Plan.
Percentage increase in share of outstanding share	2.00%
2006 Plan [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under equity-based incentive plan						22.3
Equity based incentive plan expiry period from date of grant	10 years
Equity-based incentive plan, description	Under the 2006 Plan, the exercise price of awards is set on the grant date and may not be less than the fair market value per share on such date.

Stock-based Compensation - Summ

Stock-based Compensation - Summary of Weighted-Average Assumptions Using Black-Scholes Option-Pricing Model (Detail) - Time-Based Options and SARs [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term to exercise (years), Time-Based awards	4 years	4 years	4 years
Expected volatility, Time-Based awards	25.26%	25.61%	27.64%
Risk-free interest rate, Time-Based awards	2.67%	1.92%	1.30%
Expected dividend yield, Time-Based awards	0.70%	0.73%	0.82%

Stock-based Compensation - Sche

Stock-based Compensation - Schedule of Stock-Based Compensation Expense Recognized (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 96.9	$ 41.5	$ 50.5
Cost of Software-Enabled Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	39.4	11.2	10.2
Cost of License, Maintenance and Other Related [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4.7	4.2	5
Total Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	44.1	15.4	15.2
Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	11.8	9.6	11.5
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	9	7.5	8.3
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	32	9	15.5
Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	52.8	26.1	35.3
Stock Appreciation Rights (SARs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	61	38	39.8
Stock Appreciation Rights (SARs) [Member] | Cost of Software-Enabled Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	25.7	11.1	10.1
Stock Appreciation Rights (SARs) [Member] | Cost of License, Maintenance and Other Related [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	3.9	3.6	3.5
Stock Appreciation Rights (SARs) [Member] | Total Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	29.6	14.7	13.6
Stock Appreciation Rights (SARs) [Member] | Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	7.3	8.5	8.9
Stock Appreciation Rights (SARs) [Member] | Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	8	6.2	6
Stock Appreciation Rights (SARs) [Member] | General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	16.1	8.6	11.3
Stock Appreciation Rights (SARs) [Member] | Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	31.4	23.3	26.2
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	35.9	3.4	10.5
Restricted Stock Units (RSUs) [Member] | Cost of Software-Enabled Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	13.7	0.1	0.1
Restricted Stock Units (RSUs) [Member] | Cost of License, Maintenance and Other Related [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	0.8	0.6	1.5
Restricted Stock Units (RSUs) [Member] | Total Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	14.5	0.7	1.6
Restricted Stock Units (RSUs) [Member] | Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4.5	1	2.4
Restricted Stock Units (RSUs) [Member] | Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	1	1.3	2.3
Restricted Stock Units (RSUs) [Member] | General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	15.9	0.4	4.2
Restricted Stock Units (RSUs) [Member] | Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 21.4	2.7	8.9
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense		0.1	0.2
Restricted Stock [Member] | Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense		0.1	0.2
Restricted Stock [Member] | Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense		$ 0.1	$ 0.2

Stock-based Compensation - Su_2

Stock-based Compensation - Summary of Stock Option and SAR Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Shares, Outstanding Opening	31,300,000	25,000,000	30,200,000
Granted	13,200,000	11,500,000	2,400,000
Equity awards assumed from DST	700,000
Cancelled/forfeited	(1,400,000)	(1,400,000)	(1,600,000)
Exercised	(4,000,000)	(3,800,000)	(6,000,000)
Number of Shares, Outstanding Closing	39,800,000	31,300,000	25,000,000
Weighted Average Exercise Price, Outstanding Opening	$ 28.92	$ 24.04	$ 20.64
Granted , Weighted Average Exercise Price	47.50	36.63	30.39
Weighted Average Exercise Price, Equity awards assumed	48.85
Cancelled/forfeited, Weighted Average Exercise Price	38.56	31.59	31.15
Exercised, Weighted Average Exercise Price	24.71	19.08	7.53
Weighted Average Exercise Price, Outstanding closing	$ 35.48	$ 28.92	$ 24.04

Stock-based Compensation - Su_3

Stock-based Compensation - Summary of Stock Option and SAR Activity (Parenthetical) (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Time-based options granted	13,200,000	11,500,000	2,400,000
2008 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Time-based options granted			1,400,000
Amended 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Time-based options granted			1,000,000

Stock-based Compensation - Su_4

Stock-based Compensation - Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	200,000	400,000	1,000,000
Equity awards assumed from DST	2,000,000
Cancelled/forfeited			(100,000)
Vested	(800,000)	(200,000)	(500,000)
Number of Shares, Outstanding Closing	1,400,000	200,000	400,000
Weighted Average Grant Date Fair Value, Outstanding Opening	$ 31.04	$ 31.06	$ 31.01
Granted, Weighted Average Grant Date Fair Value	50.62
Weighted Average Grant Date Fair Value, Equity awards assumed	50.71
Cancelled/forfeited, Weighted Average Grant Date Fair Value	48.71	31.36	31.22
Vested, Weighted Average Grant Date Fair Value	46.45	31.03	30.95
Weighted Average Grant Date Fair Value, Outstanding closing	$ 50.44	$ 31.04	$ 31.06

Stock-Based Compensation - Su_5

Stock-Based Compensation - Summary of Vested Stock Options and SARs Outstanding that are Currently Exercisable and Stock Options and SARs Outstanding that are Expected to Vest (Detail) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding, Vested Stock Options and SARs Currently Exercisable, Shares | shares	17.5
Outstanding, Vested Stock Options and SARs Currently Exercisable, Weighted Average Exercise Price | $ / shares	$ 25.85
Outstanding, Vested Stock Options and SARs Currently Exercisable, Aggregate Intrinsic Value | $	$ 338
Outstanding, Vested Stock Options and SARs Currently Exercisable, Weighted Average Remaining Contractual Term (Years)	5 years 10 months 24 days
Outstanding Stock Options and SARs Expected to Vest, Shares | shares	39.8
Outstanding Stock Options and SARs Expected to Vest, Weighted Average Exercise Price | $ / shares	$ 35.47
Outstanding Stock Options and SARs Expected to Vest, Aggregate Intrinsic Value | $	$ 419.4
Outstanding Stock Options and SARs Expected to Vest, Weighted Average Remaining Contractual Term (Years)	7 years 9 months

Defined Contribution Plans - Ad

Defined Contribution Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Company incurred matching contribution expenses	$ 60.8	$ 18.1	$ 14.8
Defined Benefit Pension Plan [Member] | United Kingdom [Member]
Defined Contribution Plan Disclosure [Line Items]
Net benefit asset	$ 0.8

Basic and Diluted Earnings pe_3

Basic and Diluted Earnings per Share - Computation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 58.7	$ 57	$ (63.7)	$ 51.2	$ 165.4	$ 64.2	$ 51.1	$ 48.1	$ 103.2	$ 328.9	$ 131
Shares:
Basic weighted average number of common shares outstanding									232.5	204.9	200.3
Weighted average common stock equivalents — options and restricted shares									11.2	6.7	5.5
Weighted average common and common equivalent shares outstanding — used in calculation of diluted EPS									243.7	211.6	205.8
Earnings per share - Basic	$ 0.24	$ 0.24	$ (0.27)	$ 0.25	$ 0.80	$ 0.31	$ 0.25	$ 0.24	$ 0.44	$ 1.60	$ 0.65
Earnings per share - Diluted	$ 0.23	$ 0.23	$ (0.27)	$ 0.24	$ 0.77	$ 0.30	$ 0.24	$ 0.23	$ 0.42	$ 1.55	$ 0.64

Basic and Diluted Earnings pe_4

Basic and Diluted Earnings per Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Options [Member]
Earnings Per Share [Line Items]
Options to purchase shares outstanding	5.5	10.6	14.1

Income Taxes - Schedule of Sour

Income Taxes - Schedule of Sources of Income Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S.	$ (10.9)	$ 153.8	$ 68.2
Foreign	136	128.9	95.4
Income before income taxes	$ 125.1	$ 282.7	$ 163.6

Income Taxes - Component of Inc

Income Taxes - Component of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 66.4	$ 81.1	$ 47.6
Foreign	37.8	21.4	18.9
State	23.5	3.3	13.9
Total	127.7	105.8	80.4
Deferred:
Federal	(75.4)	(144.7)	(38.6)
Foreign	0.2	(2.8)	(4.1)
State	(30.6)	(4.5)	(5.1)
Total	(105.8)	(152)	(47.8)
Provision (benefit) for income taxes	$ 21.9	$ (46.2)	$ 32.6

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
U.S. federal corporate income tax rate			21.00%	35.00%	35.00%
Provisional tax benefit for impact of tax act		$ 88,000,000		$ 88,000,000
Deferred income taxes on unremitted earnings	$ 9,000,000	7,200,000	$ 9,000,000	7,200,000
Federal net loss carryforwards	2,021
State net loss carryforwards	2,021
Foreign net operating loss carryforwards	$ 123,700,000		123,700,000
Remaining foreign net operating loss carryforwards	$ 57,100,000		57,100,000
Foreign net operating loss carryforwards expiry period	2,019
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 34,600,000		34,600,000
Valuation allowance	36,200,000	21,100,000	36,200,000	21,100,000
Potential penalties and interest on unrecognized tax benefits			2,300,000	500,000
Potential penalties and interest	25,200,000	3,600,000	25,200,000	3,600,000
Domestic [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	93,300,000		93,300,000
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 27,600,000		27,600,000
Tax credit carryforward expiration period	2,019
Domestic [Member] | 2022 [Member]
Income Taxes [Line Items]
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 4,500,000		4,500,000
Tax credit carryforward expiration period	2,022
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 90,600,000		90,600,000
Foreign [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	66,600,000		66,600,000
Valuation allowance	36,200,000	21,100,000	36,200,000	21,100,000
Foreign net operating loss carryforwards	12,400,000		12,400,000
Foreign [Member] | 2025 [Member]
Income Taxes [Line Items]
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 1,400,000		1,400,000
Tax credit carryforward expiration period	2,025
Foreign [Member] | 2026 [Member]
Income Taxes [Line Items]
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 1,100,000		1,100,000
Tax credit carryforward expiration period	2,026
Foreign and State [Member]
Income Taxes [Line Items]
Valuation allowance	$ 36,200,000		$ 36,200,000
India Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit			March 31, 2016 through March, 2017
US Federal Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit			December 31, 2010 through December 31, 2015
New York State Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit			December 31, 2011 through 2014
California State Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit			December 31, 2007 through 2016
Canadian Subsidiary [Member]
Income Taxes [Line Items]
Deferred income taxes on unremitted earnings	9,000,000	$ 7,200,000	$ 9,000,000	$ 7,200,000
Foreign Subsidiary [Member]
Income Taxes [Line Items]
Deferred income taxes on unremitted earnings	$ 0		$ 0
Maximum [Member]
Income Taxes [Line Items]
Income tax act measurement period			1 year

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation Between Expected Tax Expense and Actual Tax Provision (Benefit) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Computed “expected” tax expense		$ 26.3	$ 98.9	$ 57.3
(Decrease) increase in income tax expense resulting from:
State income taxes (net of federal income tax benefit)		(6)	7.5	5.6
Foreign operations		10.7	(36.2)	(33.6)
Enactment of Tax Act	$ (88)		(88)
Effects of stock based compensation		(14.6)	(13.6)
Effect of valuation allowance		4.6	(3.3)	2.1
Uncertain tax positions		(0.9)	(8.2)	6.5
Tax credits		(4)	(0.6)	(3.7)
Other		5.8	(2.7)	(1.6)
Provision (benefit) for income taxes		$ 21.9	$ (46.2)	$ 32.6

Income Taxes - Components of De

Income Taxes - Components of Deferred Income Taxes (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets
Net operating loss carryforwards	$ 54.8	$ 24.2
Deferred compensation	47.6	22.4
Tax credit carryforwards	34.6	26.3
Accrued expenses	25.3	13.3
Other	24.8	0.9
Unconsolidated investments		0.6
Total	187.1	87.7
Valuation allowance	(36.2)	(21.1)
Total	150.9	66.6
Deferred Tax Liabilities
Customer relationships	834.4	220.8
Other intangible assets	204.5	53.7
Unconsolidated investments	134.4
Acquired technology	66.5	53.3
Trade names	49.9	6.3
Property and equipment	43.4	6.3
Unremitted foreign earnings	9	7.2
Deferred revenue	5.7	0.2
Total	1,347.8	347.8
Total	$ 1,347.8	$ 347.8

Income Taxes - Summary of Activ

Income Taxes - Summary of Activity Related to Company's Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Beginning Balance	$ 57.6	$ 63
Increases related to current year tax positions	6.5	7.6
Decreases related to prior tax positions		(4.8)
Increases related to prior tax positions	2.6
Increases related to acquired tax positions	83.3
Settlements		(6)
Lapse in statute of limitation	(9)	(2.8)
Increases related to Foreign exchange translation adjustment		0.6
Decreases related to Foreign exchange translation adjustment	(0.5)
Ending Balance	$ 140.5	$ 57.6

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Minimum Lease Payments of Operating Leases and Committed Purchase Obligations, Excluding Future Sublease Income (Detail) $ in Millions	Dec. 31, 2018USD ($)
Operating Leases
2,019	$ 83.8
2,020	76.5
2,021	71.2
2,022	61.6
2023 and thereafter	257.8
Total	550.9
Purchase Obligations
2,019	101.8
2,020	46.7
2,021	36.8
2,022	12.7
Total	198
Total
2,019	185.6
2,020	123.2
2,021	108
2,022	74.3
2023 and thereafter	257.8
Total	$ 748.9

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Total rental expenses	$ 72	$ 47.4	$ 33.3
Rental income under sublease	$ 5.4	$ 5.4	$ 1.3

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of Future Minimum Lease Receipts under these Leases (Detail) $ in Millions	Dec. 31, 2018USD ($)
Leases [Abstract]
2,019	$ 5.2
2,020	6
2,021	4.4
2,022	2.7
2023 and thereafter	2.6
Total	$ 20.9

Segment and Geographic Inform_3

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of operating segment	1

Segment and Geographic Inform_4

Segment and Geographic Information - Summary of Long-lived Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	$ 564.8	$ 116.1	$ 95.2
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	425.2	97.2	76.9
Europe, Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	108.5	4.6	4.2
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	6	7.9	6.9
Americas, Excluding United States and Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	0.4	0.4	0.8
Asia-Pacific and Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Long-lived Assets	$ 24.7	$ 6	$ 6.4

Selected Quarterly Financial _3

Selected Quarterly Financial Data (Unaudited) - Summary of Unaudited Quarterly Results (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Data [Abstract]
Revenues	$ 1,111	$ 992.4	$ 895.8	$ 421.9	$ 438.4	$ 418.2	$ 411	$ 407.7	$ 3,421.1	$ 1,675.3	$ 1,481.4
Gross profit	473	412.3	292.3	192.4	213	198.4	187.3	190.2	1,370	788.9	680.9
Operating income (loss)	212.4	180.6	(50.7)	86.8	113.3	103.9	89.9	89.7	429.1	396.9	288.6
Net income (loss)	$ 58.7	$ 57	$ (63.7)	$ 51.2	$ 165.4	$ 64.2	$ 51.1	$ 48.1	$ 103.2	$ 328.9	$ 131
Basic earnings (loss) per share	$ 0.24	$ 0.24	$ (0.27)	$ 0.25	$ 0.80	$ 0.31	$ 0.25	$ 0.24	$ 0.44	$ 1.60	$ 0.65
Diluted earnings (loss) per share	0.23	0.23	(0.27)	0.24	0.77	0.30	0.24	0.23	0.42	1.55	0.64
Cash dividends declared and paid per common share	$ 0.08	$ 0.08	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.0625	$ 0.0625	$ 0.30	$ 0.265	$ 0.25

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - $ / shares	Feb. 12, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Cash dividends declared per share		$ 0.30	$ 0.265	$ 0.25
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividends declared per share	$ 0.10
Dividend declared date	Feb. 12, 2019
Dividend paid date	Mar. 15, 2019
Dividend record date	Mar. 1, 2019