TransUnion (TRU) 10-K 22 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
Cover [Abstract]
Document type	10-K
Current fiscal year end date	--12-31
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-37470
Entity registrant name	TransUnion
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	61-1678417
Entity Address, Address Line One	555 West Adams,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60661
City Area Code	312
Local Phone Number	985-2000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	TRU
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity filer category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 21,000
Entity Common Stock, Shares Outstanding		191.9
Documents Incorporated by Reference	Portions of the Proxy Statement of TransUnion for the Annual Meeting of Stockholders to be held May 11, 2022 are incorporated by reference to the extent specified in Part III of this Form 10-K.
Amendment flag	false
Document Fiscal Year Focus	2021
Document fiscal period focus	FY
Entity central index key	0001552033

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019
Audit Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP	Ernst & Young, LLP
Auditor Location	Chicago, Illinois	Chicago, Illinois
Auditor Firm ID	238	42

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,842.4	$ 492.7
Trade accounts receivable, net of allowance of $10.7 and $17.1	558	392.8
Other current assets	231.6	156.1
Current assets of discontinued operations		428.1
Total current assets	2,632	1,469.7
Property, plant and equipment, net of accumulated depreciation and amortization of $625.4 and $532.3	247.7	219.7
Goodwill	5,525.7	3,226.6
Other intangibles, net of accumulated amortization of $1,908.9 and $1,659.1	3,770.6	2,173.1
Other assets	459	222.5
Total assets	12,635	7,311.6
Current liabilities:
Trade accounts payable	270.2	188.4
Short-term debt and current portion of long-term debt	114.6	55.5
Other current liabilities	972.2	405.2
Current liabilities		20.7
Total current liabilities	1,357	669.8
Long-term debt	6,251.3	3,398.7
Deferred Income Tax Liabilities, Net	787.6	396.8
Other liabilities	232.9	210.2
Total liabilities	8,628.8	4,675.5
Stockholders’ equity:
Common Stock, Value, Issued	2	2
Additional paid-in capital	2,188.9	2,088.1
Treasury Stock, Value	(252)	(215.2)
Retained earnings	2,254.6	937.4
Accumulated other comprehensive loss	(285.4)	(272.1)
Total TransUnion stockholders’ equity	3,908.1	2,540.2
Noncontrolling interests	98.1	95.9
Total stockholders’ equity	4,006.2	2,636.1
Total liabilities and stockholders’ equity	$ 12,635	$ 7,311.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance	$ 10.7	$ 17.1
Property, plant and equipment, accumulated depreciation and amortization	625.4	532.3
Other intangibles accumulated amortization of	$ 1,908.9	$ 1,659.1
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	197.4	195.7
Common stock, shares outstanding	191.8	190.5
Treasury stock at cost, shares	5.6	5.2

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 2,960.2	$ 2,530.6	$ 2,463.2
Other Cost and Expense, Operating	991.6	853.9	805.5
Operating expenses
Selling, general and administrative	943.9	829.7	777.4
Depreciation and amortization	377	346.8	338.6
Total operating expenses	2,312.5	2,030.4	1,921.5
Operating income	647.7	500.3	541.7
Non-operating income and (expense)
Interest expense	(112.6)	(126.2)	(173.7)
Interest income	3.4	5.6	7.5
Earnings from equity method investments	12	8.9	13.2
Other income and (expense), net	(49.2)	0.9	(14.2)
Total non-operating income and (expense)	(146.3)	(110.8)	(167.2)
Income from continuing operations before income taxes	501.4	389.5	374.5
Provision for income taxes	(130.9)	(83.7)	(70.5)
Income from continuing operations	370.5	305.7	304
Discontinued operations, net of tax	1,031.7	49.8	48
Net income	1,402.2	355.6	352
Less: net income attributable to noncontrolling interests	(15)	(12.4)	(5.1)
Net income attributable to TransUnion	1,387.1	343.2	346.9
Less: income from continuing operations attributable to noncontrolling interests	(15)	(12.4)	(5.1)
Income from continuing operations attributable to TransUnion	$ 355.5	$ 293.4	$ 298.9
Income (Loss) from Continuing Operations, Per Basic Share	$ 1.86	$ 1.54	$ 1.59
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	5.39	0.26	0.26
Earnings Per Share, Basic	7.25	1.81	1.85
Income (Loss) from Continuing Operations, Per Diluted Share	1.84	1.53	1.56
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	5.35	0.26	0.25
Earnings Per Share, Diluted	$ 7.19	$ 1.79	$ 1.81
Weighted average shares outstanding	191.4	189.9	187.8
Weighted average dilutive shares outstanding	193	192.2	191.8

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Other comprehensive income:	$ 1,402.2	$ 355.6	$ 352
Foreign currency translation:
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	(66.4)	8.9	66.1
Benefit (expense) for income taxes	0.3	0.8	(0.5)
Foreign currency translation, net	(66.1)	9.7	65.6
Hedge instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	0	0	1
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	16.8	(9.5)	(11.5)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total	50.5	(29.9)	(33.9)
Available-for-sale securities:
Net unrealized gain	0	0.3	0
Expense for income taxes	0	(0.1)	0
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax	0	0.2	0
Total other comprehensive (loss) income, net of tax	(15.6)	(20)	31.7
Comprehensive income	1,386.6	335.6	383.7
Less: comprehensive income attributable to noncontrolling interests	(12.7)	(12.9)	(5.7)
Comprehensive income attributable to TransUnion	1,373.9	322.7	378
Interest Rate Cap [Member]
Foreign currency translation:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	0	4.1	(11)
Hedge instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total		2.8	(8.2)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	0	4.1	(11)
Interest Rate Swap [Member]
Foreign currency translation:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	67.3	(43.5)	(35.4)
Hedge instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total	50.5	(32.7)	(26.7)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	$ 67.3	$ (43.5)	$ (35.4)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 1,402.2	$ 355.6	$ 352
Discontinued operations, net of tax	1,031.7	49.8	48
Income from continuing operations	370.5	305.7	304
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	377	346.8	338.6
Loss on repayment of loans	17.9	0.4	15
Net gain on investments in affiliated companies and other investments	(11.9)	(7.5)	(17.5)
Deferred taxes	(17.2)	(36.1)	(23)
Stock-based compensation	69.2	44.3	48.3
Provision for losses on trade accounts receivable	(2.6)	9.8	8.3
Other	1.4	5.8	6.9
Changes in assets and liabilities:
Trade accounts receivable	(36.2)	(15.6)	16.3
Other current and long-term assets	(20.9)	(3.5)	(16.6)
Trade accounts payable	45.7	18.1	5.6
Other current and long-term liabilities	(33.5)	48.1	25
Cash provided by operating activities of continuing operations	759.4	716.3	710.9
Cash provided by operating activities of discontinued operations	48.9	71.3	66
Cash provided by operating activities of continuing operations	808.3	787.6	776.9
Cash flows from investing activities:
Capital expenditures	(224.2)	(205.6)	(188.4)
Proceeds from sale of other investments	36.3	90.6	35.9
Purchases of other investments	(66.9)	(73.5)	(31.4)
Acquisitions and purchases of noncontrolling interests, net of cash acquired	(3,596.1)	(57.9)	(22.3)
Payments to Acquire Equity Method Investments	(75.4)	(8.6)	(24)
Proceeds from divestiture of businesses	1,706.8	1.6	40.3
Other	(1.1)	2.4	(3.9)
Cash used in investing activities of continuing operations	(2,220.6)	(251)	(193.8)
Cash provided by (used in) investing activities of discontinued operations	7.7	(16.2)	(10.1)
Cash used in investing activities	(2,212.9)	(267.2)	(203.9)
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt and Capital Securities, Net	3,740	0	3,750
Repayments of debt	(640)	0	(3,759.1)
Repayments of Debt and Lease Obligation	140.8	208.8	389
Debt financing fees	(68.8)	0	(11.2)
Proceeds from issuance of common stock and exercise of stock options	21.9	22.9	24.4
Dividends to shareholders	(69.8)	(57.6)	(56.8)
Distributions to noncontrolling interests	(11)	(10.9)	(3.9)
Payment, Tax Withholding, Share-based Payment Arrangement	(36.8)	(36.1)	(39.2)
Other	(32.4)	(6.4)	0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations, Total	2,762.3	(296.9)	(484.8)
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0	0	(1.9)
Cash provided by (used in) financing activities	2,762.3	(296.9)	(486.7)
Effect of exchange rate changes on cash and cash equivalents	(8)	(4.4)	0.6
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,349.7	219.1	86.9
Cash and cash equivalents, end of period	1,842.4	492.7	273.6
Cash paid during the period for:
Income taxes, net of refunds	181.2	131.9	110.6
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 109.1	$ 120	$ 163.5

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Total
Balance, shares at Dec. 31, 2018		185.7
Balance at Dec. 31, 2018		$ 1.9	$ 1,947.3	$ (139.9)	$ 363.1	$ (282.7)	$ 92.5	$ 1,982.2
Consolidated Statement of Stockholders' Equity
Net income	$ 346.9				346.9
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest							5.1
Net income	352							352
Other comprehensive income (loss)	31.7					31.1	0.6	31.7
Distributions to noncontrolling interests							(4.1)	(4.1)
Establishment of noncontrolling interests							(0.1)	(0.1)
Stock-based compensation			48.4					48.4
Employee share purchase plan		0.3
Employee share purchase plan		$ 0	15.2					15.2
Exercise of stock options		1.6
Exercise of stock options		$ 0	11.4					11.4
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures								0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		(1.7)
Treasury stock purchased		(0.6)
Treasury stock purchased				(39.2)				(39.2)
Dividends, Cash					(57.1)
Dividends, Cash | Accounting Standards Update 2014-09 [Member]								(57.1)
Stockholders' Equity, Other				0.1	(0.1)			0
Balance, shares at Dec. 31, 2019		188.7
Balance at Dec. 31, 2019		$ 1.9	2,022.3	(179.2)	652	(251.6)	94	2,339.4
Balance (Cumulative Effect, Period of Adoption, Adjustment) at Dec. 31, 2019					(1)			(1)
Consolidated Statement of Stockholders' Equity
Net income	343.2				343.2
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest							12.4
Net income	355.6							355.6
Other comprehensive income (loss)	(20)					(20.5)	0.5	(20)
Distributions to noncontrolling interests							(10.9)	(10.9)
Establishment of noncontrolling interests			(3.7)				0.3	(3.4)
Stock-based compensation			43.7					43.7
Employee share purchase plan		0.2
Employee share purchase plan		$ 0	19.1					19.1
Exercise of stock options		0.9
Exercise of stock options		$ 0.1	6.7					6.8
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		$ 0						0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		1.1
Treasury stock purchased		(0.4)
Treasury stock purchased				(36.1)				(36.1)
Dividends, Cash					(57.7)			(57.7)
Stockholders' Equity, Other							0.4	0.4
Balance, shares at Dec. 31, 2020		190.5
Balance at Dec. 31, 2020	2,636.1	$ 2	2,088.1	(215.2)	937.4	(272.1)	95.9	2,636.1
Consolidated Statement of Stockholders' Equity
Net income	1,387.1				1,387.1
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest							15
Net income	1,402.2							1,402.2
Other comprehensive income (loss)	(15.6)					(13.3)	(2.3)	(15.6)
Distributions to noncontrolling interests							(11)	(11)
Stock-based compensation			75.7					75.7
Employee share purchase plan		0.2
Employee share purchase plan		$ 0	22.2					22.2
Exercise of stock options		0.3
Exercise of stock options		$ 0	2.9					2.9
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		$ 0						0
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		1.2
Treasury stock purchased		(0.4)
Treasury stock purchased				(36.8)				(36.8)
Dividends, Cash					(69.9)			(69.9)
Stockholders' Equity, Other							(0.5)	0.5
Balance, shares at Dec. 31, 2021		191.8
Balance at Dec. 31, 2021	$ 4,006.2	$ 2	$ 2,188.9	$ (252)	$ 2,254.6	$ (285.4)	$ 98.1	$ 4,006.2

Significant Accounting and Repo

Significant Accounting and Reporting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Significant accounting and reporting policies	Significant Accounting and Reporting Policies Description of Business TransUnion is a leading global information and insights company that makes trust possible between businesses and consumers, working to help people around the world access opportunities that lead to a higher quality of life. That trust is built on TransUnion’s ability to deliver safe, innovative solutions with credibility and consistency. We call this Information for Good. Grounded in our heritage as a credit reporting agency, we have built robust and accurate databases of information for a large portion of the adult population in the markets we serve. We use our data fusion methodology to link and match an increasing set of disparate data to further enrich our database . We use this enriched data, combined with our expertise, to continuously develop more insightful solutions for our customers, all in accordance with global laws and regulations. Because of our work, organizations can better understand consumers in order to make more informed decisions, and earn consumer trust through great, personalized experiences, and the proactive extension of the right opportunities, tools and offers. In turn, we believe consumers can be confident that their data identities will result in better offers and opportunities. We provide solutions that enable businesses to manage and measure credit risk, market to new and existing customers, verify consumer identities, mitigate fraud, and effectively manage call center operations. Businesses embed our solutions into their process workflows to deliver critical insights and enable effective actions. Consumers use our solutions to view their credit profiles and access analytical tools that help them understand and manage their personal financial information and take precautions against identity theft. We have deep domain expertise across a number of attractive industries, which we also refer to as verticals, including Financial Services and Emerging Verticals, which consists of Insurance, Services and Collections, Tenant and Employment, Technology, Commerce & Communications, Public Sector, Media, and other emerging verticals we serve, as well as our Neustar business. We have a global presence in over 30 countries and territories across North America, Latin America, Europe, Africa, India, and Asia Pacific. Our solutions are based on a foundation of data assets across financial, credit, alternative credit, identity, phone activity, digital device information, marketing, bankruptcy, lien, judgment, insurance claims, automotive and other relevant information obtained from thousands of sources including financial institutions, private databases and public records repositories. We refine, standardize and enhance this data using sophisticated algorithms to create proprietary databases. Our technology infrastructure allows us to efficiently integrate our data with our analytics and technology capabilities to create and deliver innovative solutions to our customers and to quickly adapt to changing customer needs. Our deep analytics resources, including our people and tools driving predictive modeling and scoring, customer segmentation, benchmarking and forecasting, enable us to provide businesses and consumers with better insights. We leverage our differentiated capabilities in order to serve a global customer base across multiple geographies and industry verticals. We offer our solutions to business customers in Financial Services, Insurance and other industries, and our customer base includes many of the largest companies in the industries we serve. We sell our solutions to leading consumer lending banks, credit card issuers, alternative lenders, online-only lenders (“FinTechs”), Point of Sale (“POS”)/Buy Now Pay Later (“BNPL”) lenders, auto lenders, auto insurance carriers, cable and telecom operators, retailers, and federal, state and local government agencies. Millions of consumers across the globe also use our data to help manage their personal finances and take precautions against identity theft. Basis of Presentation The accompanying consolidated financial statements of TransUnion and subsidiaries have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). Our consolidated financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair presentation of the periods presented. All significant intercompany transactions and balances have been eliminated. As a result of displaying amounts in millions, rounding differences may exist in the financial statements and footnote tables. Certain prior period presentations, including our discontinued Healthcare operations as further discussed in Note 3, “Discontinued Operations,” have been recast to conform to current year presentations. Unless the context indicates otherwise, any reference in this report to the “Company,” “we,” “our,” “us,” and “its” refers to TransUnion and its consolidated subsidiaries, collectively. For the periods presented, TransUnion does not have any material assets, liabilities, revenues, expenses or operations of any kind other than its ownership investment in TransUnion Intermediate Holdings. Inc. Principles of Consolidation The consolidated financial statements of TransUnion include the accounts of TransUnion and all of its controlled subsidiaries. Investments in nonmarketable unconsolidated entities in which the Company is able to exercise significant influence are accounted for using the equity method. Investments in nonmarketable unconsolidated entities in which the Company is not able to exercise significant influence, our “Cost Method Investments,” are accounted for at our initial cost, minus any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Use of Estimates The preparation of consolidated financial statements and related disclosures in accordance with GAAP requires management to make estimates and judgments that affect the amounts reported. We believe that the estimates used in preparation of the a ccompanying consolidated financial statements are reasonable, based upon information available to management at this time. These estimates and judgments affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the balance sheet date, as well as the amounts of revenue and expense during the reporting period. Estimates are inherently uncertain and actual results could differ materially from the estimated amounts. Impact of COVID-19 on Our Financial Statements During 2020, the economic effect of the COVID-19 pandemic had a material and adverse impact on numerous aspects of our business, including customer demand for our services and solutions in all of our segments. During 2021, we saw ongoing improvements in our results of operations in all the markets where we operate. However, given ongoing uncertainty and the unpredictable nature of the pandemic, including the rise of variants of the virus and the effectiveness of vaccines against those variants, COVID-19 may have a material and adverse impact on various aspects of our business in the future, including our consolidated financial statements. Segments Operating segments are businesses for which separate financial information is available and evaluated regularly by our chief operating decision maker (“CODM”) deciding how to allocate resources and assess performance. We have three operating and reportable segments; U.S. Markets, International and Consumer Interactive. We also report expenses for Corporate, which provides support services to each segment. Details of our segment results are discussed in Note 20, “Reportable Segments.” Revenue Recognition and Deferred Revenue All of our revenue is derived from contracts with our customers and is reported as revenue in the Consolidated Statements of Income generally as or at the point in time our performance obligations are satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to a customer. We have contracts with two general groups of performance obligations; those that require us to stand ready to provide goods and services to a customer to use as and when requested (“Stand Ready Performance Obligations”) and those that do not require us to stand ready (“Other Performance Obligations”). Our Stand Ready Performance Obligations include obligations to stand ready to provide data, process transactions, access our databases, software-as-a-service and direct-to-consumer products, rights to use our intellectual property and other services. Our Other Performance Obligations include the sale of certain batch data sets and various professional and other services. Deferred revenue generally consists of amounts billed in excess of revenue recognized for the sale of data services, subscriptions and set up fees. As our contracts with customers generally have a duration of one year or less, our contract liabilities consist of deferred revenue that is primarily short-term in nature. The current and long-term portions of deferred revenue are included in other current liabilities and other liabilities. See Note 15, “Revenue,” for a further discussion about our revenue recognition policies. Costs of Services Costs of services include data acquisition and royalty fees, personnel costs related to our databases and software applications, consumer and call center support costs, hardware and software maintenance costs, telecommunication expenses and occupancy costs associated with the facilities where these functions are performed. Selling, General and Administrative Expenses Selling, general and administrative expenses include personnel-related costs for sales, administrative and management employees, costs for professional and consulting services, advertising and occupancy and facilities expense of these functions. Advertising costs, are expensed as incurred. Advertising costs, which include commissions we pay to our partners to promote our products online, for the years ended December 31, 2021, 2020 and 2019 were $92.9 million, $89.8 million and $83.3 million, respectively. Stock-Based Compensation Compensation expense for all stock-based compensation awards is determined using the grant date fair value. For all equity-based plan, we record the impact of forfeitures when they happen. Expense is recognized on a straight-line basis over the requisite service period of the award, which is generally equal to the vesting period. The details of our stock-based compensation program are discussed in Note 18, “Stock-Based Compensation.” Income Taxes Deferred income tax assets and liabilities are determined based on the estimated future tax effects of temporary differences between the financial statement and tax basis of assets and liabilities, as measured by current enacted tax rates. The effect of a tax rate change on deferred tax assets and liabilities is recognized in operations in the period that includes the enactment date of the change. We periodically assess the recoverability of our deferred tax assets, and a valuation allowance is recorded against deferred tax assets if it is more likely than not that some portion of the deferred tax assets will not be realized. See Note 17, “Income Taxes,” for additional information. Foreign Currency Translation The functional currency for each of our foreign subsidiaries is generally that subsidiary’s local currency. We translate the assets and liabilities of foreign subsidiaries at the year-end exchange rate, and translate revenues and expenses at the monthly average rates during the year. We record the resulting translation adjustment as a component of other comprehensive income in stockholders’ equity. Transaction gains and losses that arise from exchange rate fluctuations on transactions denominated in a currency other than the functional currency of an entity are included in the results of operations as incurred. The exchange rate losses for the years ended December 31, 2021, 2020 and 2019 were not material. Cash and Cash Equivalents We consider investments in highly liquid debt instruments with original maturities of three months or less to be cash equivalents. The carrying value of our cash and cash equivalents approximate their fair value. Trade Accounts Receivable We base our allowance for doubtful accounts estimate on our historical loss experience, our current expectations of future losses, current economic conditions, an analysis of the aging of outstanding receivables and customer payment patterns, and specific reserves for customers in adverse financial condition or for existing contractual disputes. The following is a rollforward of the allowance for doubtful accounts for the periods presented: Twelve months ended December 31, 2021 2020 2019 Beginning Balance $ 17.1 $ 13.4 $ 10.5 Provision for losses on trade accounts receivable (2.6) 9.8 8.3 Write-offs, net of recovered accounts (3.8) (6.1) (5.4) Ending balance $ 10.7 $ 17.1 $ 13.4 Long-Lived Assets Property, Plant, Equipment and Intangibles Property, plant and equipment is depreciated primarily using the straight-line method, over the estimated useful lives of the assets. Buildings and building improvements are generally depreciated over 20 years. Computer equipment and purchased software are depreciated over 3 to 7 years. Leasehold improvements are depreciated over the shorter of the estimated useful life of the asset or the lease term. Other assets are depreciated over 5 to 7 years. Intangibles, other than indefinite-lived intangibles, are amortized using the straight-line method, which approximates the pattern of usage, over their economic life, generally 3 to 40 years. Assets to be disposed of, if any, are separately presented in the consolidated balance sheet and reported at the lower of the carrying amount or fair value, less costs to sell, and are no longer depreciated. See Note 5, “Property, Plant and Equipment,” and Note 7, “Intangible Assets,” for additional information about these assets. Internal Use Software We monitor the activities of each of our internal use software and system development projects and analyze the associated costs, making an appropriate distinction between costs to be expensed and costs to be capitalized. Costs incurred during the preliminary project stage are expensed as incurred. Many of the costs incurred during the application development stage are capitalized, including costs of software design and configuration, development of interfaces, coding, testing and installation of the software. Once the software is ready for its intended use, it is amortized on a straight-line basis over its useful life, generally 3 to 10 years. Impairment of Long-Lived Assets We review long-lived asset groups that are subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Recoverability of asset groups to be held and used is measured by a comparison of the carrying amount of an asset group to the estimated undiscounted future cash flows expected to be generated by the asset group. If the carrying amount of an asset group exceeds its estimated future cash flows, an impairment charge is recognized equal to the amount by which the carrying amount of the asset group exceeds the fair value of the asset group. There were no significant impairment charges recorded during 2021, 2020 and 2019. Marketable Securities We classify our investments in debt and equity securities in accordance with our intent and ability to hold the investments. Held-to-maturity securities are carried at amortized cost, which approximates fair value, and are classified as either short-term or long-term investments based on the contractual maturity date. Earnings from these securities are reported as a component of interest income. Available-for-sale securities if any, are carried at fair market value, with the unrealized gains and losses, net of tax, included in accumulated other comprehensive income. At December 31, 2021 and 2020, the Company’s marketable securities consisted of available-for-sale securities. The available-for-sale securities relate to foreign exchange-traded corporate bonds. There were no significant realized or unrealized gains or losses for these securities for any of the periods presented. We follow fair value guidance to measure the fair value of our financial assets as further described in Note 19, “Fair Value”. We periodically review our marketable securities to determine if there is an other-than-temporary impairment on any security. If it is determined that an other-than-temporary decline in value exists, we write down the investment to its market value and record the related impairment loss in other income. There were no other-than-temporary impairments of marketable securities in 2021, 2020 or 2019. Goodwill Goodwill is allocated to our reporting units, which are an operating segment or one level below an operating segment. We have no indefinite-lived intangible assets other than goodwill. We conduct an impairment test in the fourth quarter of each year, or more frequently if even ts or circumstances indicate that the carrying value of goodwill may be impaired. We have the option to first perform a qualitative analysis to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying value. If the qualitative analysis indicates that an impairment is more likely than not for a reporting unit, we perform a quantitative impairment analysis for that reporting unit. We have the option to bypass the qualitative analysis for any reporting unit and proceed directly to performing a quantitative analysis. When we perform a quantitative impairment analysis, we use a combination of an income approach, using the discounted cash flow method, and a market approach, using the guideline public company method, to determine the fair value of each reporting unit. For each reporting unit, we compare the fair value to its carrying value including goodwill. If the fair value of the reporting unit is less than its carrying value, we record an impairment charge based on that difference, up to the amount of goodwill recorded in that reporting unit. The quantitative impairment analysis requires the application of a number of significant assumptions, including estimates of future revenue growth rates, EBITDA margins, discount rates, and market multiples. The projected future revenue and EBITDA margins, and the resulting projected cash flows of each reporting unit, is based on internal operating plans reviewed by management, extrapolated over the forecast period. The discount rate for each reporting unit is based on the weighted average cost of capital for the reporting unit. Market multiples are based on the Guideline Public Company Method using comparable publicly traded company multiples of earnings before interest, taxes, and depreciation and amortization for a group of benchmark companies. See Note 6, “Goodwill,” for additional information about our 2021 impairment analysis. Benefit Plans We maintain a 401(k) defined-contribution profit sharing plan for eligible employees. We provide a partial matching contribution and a discretionary contribution based on a fixed percentage of a participant’s eligible compensation. Contributions to this plan for the years ended December 31, 2021, 2020 and 2019 were $34.5 million, $27.2 million and $29.6 million, respectively. Recently Adopted Accounting Pronouncements On December 18, 2019, the FASB issued Accounting Standards Update (“ASU”) 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU removes specific exceptions to the general principles in Topic 740. Among other things, it eliminates the need for organizations to analyze whether the following apply in a given period: an exception to the incremental approach for intra-period tax allocation; exceptions to accounting for basis differences when there are ownership changes in foreign investments; and an exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. This ASU also improves financial statement preparers’ application of income tax-related guidance and simplifies GAAP for: franchise taxes that are partially based on income; transactions with a government that result in a step up in the tax basis of goodwill; separate financial statements of legal entities that are not subject to tax; and enacted changes in tax laws in interim periods. This guidance is effective for annual reporting periods beginning after December 15, 2020, including interim periods therein. Upon adoption, this guidance did not have a material impact on our consolidated financial statements. On January 16, 2020, the FASB issued ASU 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)-Clarifying the Interactions between Topic 321, Topic 323, and Topic 815. This ASU, among other things, clarifies that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments-Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. This amendment also clarifies that, when determining the accounting for certain forward contracts and purchased options a company should not consider, whether upon settlement or exercise, if the underlying securities would be accounted for under the equity method or fair value option. This guidance is effective for annual reporting periods beginning after December 15, 2020, including interim periods therein. Upon adoption, this guidance had no impact our consolidated financial statements as we had no such transactions at the time of adoption. On October 28, 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. This ASU will require acquiring entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. Previously, acquiring entities generally were required to recognize such items at fair value on the acquisition date. This guidance is effective for annual reporting periods beginning after December 15, 2022, including interim periods therein, with early adoption permitted. We elected to early adopt this guidance on December 1, 2021, and have accounted for contract assets and liabilities for our 2021 acquisitions in accordance with this updated guidance. Recent Accounting Pronouncements Not Yet Adopted There are no pending recent accounting pronouncements that apply to TransUnion that have not been adopted.
Nature of Operations [Text Block]	Description of Business TransUnion is a leading global information and insights company that makes trust possible between businesses and consumers, working to help people around the world access opportunities that lead to a higher quality of life. That trust is built on TransUnion’s ability to deliver safe, innovative solutions with credibility and consistency. We call this Information for Good. Grounded in our heritage as a credit reporting agency, we have built robust and accurate databases of information for a large portion of the adult population in the markets we serve. We use our data fusion methodology to link and match an increasing set of disparate data to further enrich our database . We use this enriched data, combined with our expertise, to continuously develop more insightful solutions for our customers, all in accordance with global laws and regulations. Because of our work, organizations can better understand consumers in order to make more informed decisions, and earn consumer trust through great, personalized experiences, and the proactive extension of the right opportunities, tools and offers. In turn, we believe consumers can be confident that their data identities will result in better offers and opportunities. We provide solutions that enable businesses to manage and measure credit risk, market to new and existing customers, verify consumer identities, mitigate fraud, and effectively manage call center operations. Businesses embed our solutions into their process workflows to deliver critical insights and enable effective actions. Consumers use our solutions to view their credit profiles and access analytical tools that help them understand and manage their personal financial information and take precautions against identity theft. We have deep domain expertise across a number of attractive industries, which we also refer to as verticals, including Financial Services and Emerging Verticals, which consists of Insurance, Services and Collections, Tenant and Employment, Technology, Commerce & Communications, Public Sector, Media, and other emerging verticals we serve, as well as our Neustar business. We have a global presence in over 30 countries and territories across North America, Latin America, Europe, Africa, India, and Asia Pacific. Our solutions are based on a foundation of data assets across financial, credit, alternative credit, identity, phone activity, digital device information, marketing, bankruptcy, lien, judgment, insurance claims, automotive and other relevant information obtained from thousands of sources including financial institutions, private databases and public records repositories. We refine, standardize and enhance this data using sophisticated algorithms to create proprietary databases. Our technology infrastructure allows us to efficiently integrate our data with our analytics and technology capabilities to create and deliver innovative solutions to our customers and to quickly adapt to changing customer needs. Our deep analytics resources, including our people and tools driving predictive modeling and scoring, customer segmentation, benchmarking and forecasting, enable us to provide businesses and consumers with better insights. We leverage our differentiated capabilities in order to serve a global customer base across multiple geographies and industry verticals. We offer our solutions to business customers in Financial Services, Insurance and other industries, and our customer base includes many of the largest companies in the industries we serve. We sell our solutions to leading consumer lending banks, credit card issuers, alternative lenders, online-only lenders (“FinTechs”), Point of Sale (“POS”)/Buy Now Pay Later (“BNPL”) lenders, auto lenders, auto insurance carriers, cable and telecom operators, retailers, and federal, state and local government agencies. Millions of consumers across the globe also use our data to help manage their personal finances and take precautions against identity theft.

Business Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Business Acquisitions	Business Acquisitions 2021 Acquisitions During the fourth quarter of 2021, we completed the acquisitions of Neustar, Inc. (“Neustar”) and Sontiq, Inc. (“Sontiq”). These transactions were accounted for as business combinations under the acquisition method of accounting. The acquisition method requires, among other things, that assets acquired and liabilities assumed in a business combination generally be recognized at their fair values as of the acquisition date. The determination of fair value requires management to make significant estimates and assumptions. The excess of the purchase price over the fair value of the acquired net assets has been recorded as goodwill. The results of operations of these acquisitions are included in our consolidated financial statements from the dates of acquisition. Neustar On December 1, 2021, we completed our previously announced acquisition of Neustar, pursuant to a Securities Purchase Agreement dated as of September 11, 2021 (the “Neustar Agreement”), by and between Trans Union LLC and Aerial Investors LLC. Neustar, a premier identity resolution company with leading solutions in Marketing, Risk and Communications, enables customers to build connected consumer experiences by combining decision analytics with real-time identity resolution services driven by its OneID platform. The acquisition of Neustar provides immediate scale to our identity resolution services through their large, well-established customer base as well as accelerates the future growth of our identity-based solutions and expands our powerful digital identity capabilities through the addition of distinctive data and analytics, enabling consumers and businesses to transact online with greater confidence. We acquired 100% of the equity interests of Neustar for $3,106.6 million in cash, subject to certain customary purchase price adjustments as set forth in the Neustar Agreement. The transaction was primarily funded with the proceeds from the issuance of our Incremental Term B-6 Loan, which closed concurrently with the closing of the transaction. See Note 12, “Debt,” for additional information about our Incremental Term B-6 Loan. There was no contingent consideration resulting from this transaction. We engaged in business activities with Neustar prior to the acquisitio n that were not material. The r esults of operations of Neustar subsequent to the acquisition date and the acquired assets and assumed liabilities, including the preliminary allocation of goodwill and intangible assets, are included in the U.S. Markets segment, including revenue of $51.0 million and a net loss of $11.7 million in 2021. Sontiq On December 1, 2021, we completed our previously announced acquisition of Sontiq, pursuant to a Securities Purchase Agreement dated as of October 22, 2021 (the “Sontiq Agreement”), by and among TransUnion Interactive, Inc., EZShield Group Holdings, LLC and EZS Parent Inc. Sontiq provides solutions including identity monitoring, restoration, and response products and services to help empower consumers and businesses to proactively protect against identity theft and cyber threats. The acquisition of Sontiq enables access to an attractive new base of customers and consumers through a highly recurring subscription-based revenue model and also complements and expands our Consumer Interactive solutions portfolio by providing valuable identity protection services for consumers. Sontiq’s identity security monitoring products incorporate our credit data, are highly complementary to our capabilities and are expected to significantly increase our opportunities for growth. We acquired 100% of the equity interests of Sontiq for $642.8 million in cash, subject to certain customary purchase price adjustments as set forth in the Sontiq Agreement. The transaction was primarily funded with the proceeds from the issuance of our Second Lien Term Loan, which closed concurrently with the closing of the transaction. The Second Lien Term Loan was repaid in full prior to December 31, 2021. See Note 12, “Debt,” for additional information about our Second Lien Term Loan. There was no contingent consideration resulting from this transaction. The results of operations of Sontiq subsequent to the acquisition date and the acquired assets and assumed liabilities, including the preliminary allocation of goodwill and intangible assets, are included within the Consumer Interactive segment. The results of operations of Sontiq subsequent to the acquisition date are not material to our consolidated financial results. Acquisition Costs We recognized transaction costs related to the acquisitions of Neustar and Sontiq of $38.8 million for the year ended December 31, 2021. These costs include investment banker fees, legal, due diligence, and other external costs that we have recorded within other income and expense. Purchase Price Allocations The purchase price for the acquisitions are preliminary, pending final customary purchase price adjustments. The valuations of the assets acquired and liabilities assumed have not yet been finalized as of December 31, 2021. The purchase price allocations are preliminary and subject to change, including the valuation of intangible assets, income taxes and goodwill, among other items. The purchase price allocations for both of the acquisitions will be finalized as the information necessary to complete the analysis is obtained, which we expect to complete within one year from the acquisition date. The fair values assigned to assets acquired and liabilities assumed as of December 31, 2021 are based on management’s best estimates and assumptions as of the reporting date and are considered preliminary pending finalization of the valuation analysis. Further, we have not yet allocated goodwill to reporting units. The table below summarizes the preliminary allocation of fair value of assets acquired and liabilities assumed as of December 1, 2021: December 1, 2021 (in millions) Neustar Sontiq Total Purchase price: $ 3,106.6 $ 642.8 $ 3,749.4 Assets acquired: Cash and cash equivalents $ 122.7 $ 17.8 $ 140.4 Trade accounts receivable 118.7 10.4 129.1 Other current assets 24.9 1.4 26.3 Right of use lease assets 83.2 2.4 85.6 Property, plant and equipment 42.5 5.2 47.7 Identifiable intangible assets 1,513.0 237.2 1,750.2 Goodwill 1 1,900.3 445.8 2,346.0 Other assets 5.4 0.2 5.6 Total assets acquired $ 3,810.7 $ 720.3 $ 4,531.0 Liabilities assumed: Accounts payable $ 29.1 $ 7.0 $ 36.1 Other current liabilities 157.6 4.7 162.3 Deferred revenue 49.3 19.1 68.5 Operating lease liabilities 88.3 2.4 90.7 Other liabilities 14.7 0.1 14.8 Deferred tax liabilities 365.1 44.2 409.3 Total liabilities assumed $ 704.1 $ 77.5 $ 781.6 Net assets acquired: $ 3,106.6 $ 642.8 $ 3,749.4 (1) For tax purposes, we estimate that $326.6 million of the goodwill, which originated from previous acquisitions of Neustar and Sontiq, is tax deductible. Identifiable Intangible Assets The following table sets forth the components of identifiable intangible assets acquired and the weighted average amortization period as of the acquisition date: December 1, 2021 Neustar Sontiq (dollars in millions) Fair Value Weighted-Average Amortization Period Fair Value Weighted-Average Amortization Period Customer relationships $ 1,183.0 18 years $ 184.1 17 years Technology and software 320.0 10 years 49.3 10 years Trade names and trademarks 10.0 1 year 1.5 1 year Non-compete agreements — — 2.3 2 years Total identifiable intangible assets $ 1,513.0 16 years $ 237.2 15 years In determining the fair value of the identifiable intangible assets, we utilized various forms of the income approach, depending on the asset being valued. The estimation of fair value requires significant judgment related to cash flow forecasts, discount rates reflecting the risk inherent in each cash flow stream, competitive trends, market comparables and other factors. Other inputs included historical data, current and anticipated market conditions, and growth rates. The intangible assets were valued using the following valuation approaches: Customer Relationships We valued customer relationships using the multi-period excess-earnings method, a form of the income approach, which required the application of judgment for significant assumptions. Significant assumptions include customer attrition rates, EBITDA margins, and discount rates. Technology and software We valued the developed technology using the relief-from-royalty method, a form of the income approach, which required the application of judgment for significant assumptions. Significant assumptions include the royalty rate, economic depreciation factors, and discount rates. Other identifiable intangible assets Other identifiable intangible assets include trade names and trademarks and non-compete agreements for key employees, which are not material. Trade names and trademarks were valued using the relief from royalty method, and non-compete agreements were valued using the lost income method. We recorded the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired and liabilities assumed as goodwill. The purchase price of both acquisitions exceeded the fair value estimate of the net assets acquired primarily due to expected future revenue growth opportunities, synergies, operating efficiencies and the assembled workforce. The acquisition of Neustar is expected to accelerate growth through both material revenue synergies and increased participation in the fast-growing digital marketing and identity verification marketplaces. The acquisition of Sontiq is expected to result in a more comprehensive set of offerings which are expected to significantly increase growth opportunities for the Company. Unaudited pro-forma financial information The supplemental pro-forma financial information has been prepared using the acquisition method of accounting and is based on the historical financial information of TransUnion and Neustar, assuming the transaction occurred on January 1, 2020. The pro-forma revenues and results of operations of Sontiq are not included because the impact on our consolidated financial statements is immaterial. Th e supplemental pro-forma financial information does not necessarily represent what the combined companies' revenue or results of operations would have been had the acquisition of Neustar been completed on January 1, 2020, nor is it intended to be a projection of future operating results of the combined company. It also does not reflect any operating efficiencies or potential cost savings that might be achieved from synergies of combining TransUnion and Neustar. The unaudited supplemental pro-forma financial information has been calculated after applying TransUnion’s accounting policies and adjusting the results of the combined company to reflect incremental amortization expense resulting from the fair value adjustments for acquired intangible assets as well as the net decrease to interest expense resulting from the elimination of the historical interest expense on Neustar debt that was paid off at closing partially offset by incremental interest expense resulting from the external debt borrowed by TransUnion to fund the acquisition, and the corresponding income tax impact of these adjustments. Also, during the year ended December 31, 2021, TransUnion and Neustar incurred $29.7 million and $88.2 million of acquisition-related costs, respectively. These expenses are reflected in Pro-forma net income from continuing operations attributable to TransUnion for the year ended December 31, 2020, in the table below and the acquisition related expenses incurred by TransUnion are included in other income (expense), net, in our consolidated statement of income for the year ended December 31, 2021.. There are no other material non-recurring pro-forma adjustments directly attributable to the acquisition included in the reported pro-forma revenue and pro-forma net income. (Unaudited) TransUnion and Neustar combined For the Year Ended (in millions) December 31, December 31, Pro-forma revenue $ 3,493.2 $ 3,064.5 Pro-forma net income from continuing operations attributable to TransUnion $ 247.6 $ 72.9 2020 and 2019 Acquisitions

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations During the fourth quarter of 2021 the Company entered into a definitive agreement to sell the Healthcare business, and on December 17, 2021, we completed the closing of the transaction. The transaction consideration was $1,705.9 million in cash, subject to a final net working capital adjustment in early 2022. The after-tax net proceeds are approximately $1.4 billion, subject to the final net working capital adjustment. The terms and conditions of the transaction are set forth in the Stock Purchase Agreement dated as of October 26, 2021, by and between Trans Union LLC and nThrive, Inc. We also entered into a transition services agreement (“TSA”) that requires Trans Union LLC to provide certain administrative and operational services to the buyer on a transitional basis for generally up to 24 months. This agreement is not material and does not confer upon us the ability to influence the operating or financial policies of the buyer subsequent to the closing date. Income generated from the services provided under the TSA will be recorded in other income and expense. The Healthcare business met the criteria for discontinued operations at December 31, 2021, as the sale represented a strategic shift in our business that will have a major effect on our results of operations. The Healthcare business was previously an operating segment included in our U.S. Markets reportable segment. As the transaction closed on December 17, 2021, there are no assets or liabilities of discontinued operations on our consolidated balance sheet as of December 31, 2021. The assets and liabilities of the Healthcare business are classified as current assets and current liabilities of discontinued operations in our consolidated balance sheet for 2020. The results of operations are classified as discontinued operations, net of tax, in our consolidated statement of income for all periods presented. Discontinued operations, net of tax, also includes a gain on the disposal of the Healthcare business o f $982.5 million, net of tax, in the consolidated statements of income for the twelve months ended December 31, 2021. The results of operations of the Healthcare business are presented as income from discontinued operations, net of tax on our consolidated statement of income. The following table presents financial results of TransUnion Healthcare business for each respective period. Twelve Months Ended December 31, (in millions) 2021 (1) 2020 2019 (2) Revenue $ 184.8 $ 185.9 $ 192.9 Operating expenses Cost of services (exclusive of depreciation and amortization below) 65.6 66.5 68.6 Selling, general and administrative 39.1 30.6 34.7 Depreciation and amortization 16.5 21.1 23.5 Total operating expenses 121.2 118.2 126.8 Operating income of discontinued operations 63.6 67.7 66.1 Non-operating income and (expense) 1.9 (1.4) (0.1) Income before income taxes from discontinued operations 65.5 66.3 66.0 Provision for income taxes (16.3) (16.5) (13.4) Gain on sale of discontinued operations, net of tax 982.5 — — Income from discontinued operations, net of tax $ 1,031.7 $ 49.8 $ 52.6 (1) The 2021 results are through December 16, 2021. (2) The 2019 column in the table above does not include the activity of discontinued operations of our UK business that was not material. We disposed of that business in 2019. The following table presents the carrying amounts of the major classes of assets and liabilities of discontinued operations of TransUnion Healthcare business at each respective date: (in millions) December 31, 2021 (1) December 31, Assets: Trade accounts receivable $ — $ 60.9 Other current assets — 3.9 Goodwill — 235.0 Other intangible assets — 111.5 Other non-current assets — 16.8 Total assets of discontinued operations $ — $ 428.1 Liabilities: Current liabilities $ — $ 15.4 Non-current liabilities — 5.3 Total liabilities of discontinued operations $ — $ 20.7 (1) The sale of the Healthcare business closed on December 17, 2021. As of December 31, 2021, there are no assets or liabilities of discontinued operations.

Other Current Assets

Other Current Assets	12 Months Ended
	Dec. 31, 2021
Prepaid Expense and Other Assets, Current [Abstract]
Other Current Assets	Other Current Assets Other current assets consisted of the following: (in millions) December 31, December 31, Prepaid expenses (Note 2) $ 136.2 $ 84.3 Contract assets (Note 15) 5.2 1.8 Marketable securities (Note 19) 3.1 3.2 Other 87.1 66.8 Total other current assets $ 231.6 $ 156.1 The December 31, 2021 prepaid expense balance includes prepaid expenses from our acquisition of Neustar and Sontiq. Other includes other investments in non-negotiable certificates of deposit that are recorded at their carrying value which approximates fair value.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment, including those acquired by capital lease, consisted of the following: (in millions) December 31, December 31, Computer equipment and furniture $ 511.8 $ 451.8 Purchased software 218.3 179.0 Building and building improvements 139.8 118.0 Land 3.2 3.2 Total cost of property, plant and equipment 873.1 752.0 Less: accumulated depreciation (625.4) (532.3) Total property, plant and equipment, net of accumulated depreciation $ 247.7 $ 219.7

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2021
Goodwill [Abstract]
Goodwill	Goodwill Our reporting units consist of U.S. Markets, Consumer Interactive, and the geographic regions of the United Kingdom, Africa, Canada, Latin America, India, and Asia Pacific within our International reportable segment. In 2021 and 2020, we elected to bypass the qualitative goodwill impairment analysis, and instead performed a quantitative goodwill impairment analysis for all reporting units. We compared the fair value of each reporting unit to its carrying value including goodwill. For each of our reporting units, the fair value exceeded the carrying value and no impairment loss was recorded. Our reporting units that have longer operating histories have greater headroom compared with those reporting units that include significant recent acquisitions. We did not record a goodwill impairment loss in 2021, 2020 and 2019 and as of December 31, 2021, there was no accumulated goodwill impai rment loss. Goodwill allocated to our reportable segments as of December 31, 2021, and 2020, and the changes in the carrying amount of goodwill during the periods, consisted of the following: (in millions) U.S. Markets International Consumer Total Balance, December 31, 2019 $ 1,486.1 $ 1,415.5 $ 241.2 $ 3,142.8 2020 Acquisitions 76.2 — — 76.2 Foreign exchange rate adjustment — 7.6 — 7.6 Balance, December 31, 2020 $ 1,562.3 $ 1,423.1 $ 241.2 $ 3,226.6 2021 Acquisitions 1,900.2 — 445.8 2,346.0 Purchase accounting measurement period adjustments (7.9) — — (7.9) Foreign exchange rate adjustment — (39.0) — (39.0) Balance, December 31, 2021 $ 3,454.6 $ 1,384.1 $ 687.0 $ 5,525.7

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets	Intangible Assets Intangible assets are initially recorded at their acquisition cost, or fair value if acquired as part of a business combination, and amortized over their estimated useful lives. The increase in the gross amount of intangible assets during 2021 was attributable to a $1,750.2 million increase related to our business acquisitions as further discussed in Note 2, “Acquisitions,” and a $140.3 million increase related to the development of internal use software, partially offset by a $33.4 million decrease related to changes in foreign exchange rates . Intangible assets consisted of the following: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Customer relationships $ 1,918.1 $ (225.3) $ 1,692.8 $ 561.4 $ (189.6) $ 371.8 Internal use software 1,765.9 (874.5) 891.4 1,270.4 (766.3) 504.1 Database and credit files 1,403.3 (655.0) 748.3 1,418.5 (566.1) 852.4 Trademarks, copyrights and patents 581.9 (146.7) 435.2 569.5 (129.8) 439.7 Noncompete and other agreements 10.3 (7.4) 2.9 12.4 (7.3) 5.1 Total intangible assets $ 5,679.5 $ (1,908.9) $ 3,770.6 $ 3,832.2 $ (1,659.1) $ 2,173.1 All amortizable intangible assets are amortized on a straight-line basis, which approximates the pattern of benefit, over their estimated useful lives. Database and credit files are generally amortized over a 12 to 15 year period. Internal use software is generally amortized over 3 to 10 year period. Customer relationships are amortized over a 10 to 20 year period. Trademarks primarily consist of the TransUnion trade name, which is being amortized over a 40 year useful life, and the remaining trademark assets are generally amortized over a shorter period based on their estimated useful life, which ranges between 1 and 20 years. Copyrights, patents, noncompete and other agreements are amortized over varying periods based on their estimated economic life. The weighted average lives of our intangibles is approximately 15 years. Amortization expense related to intangible assets for the years ended December 31, 2021, 2020 and 2019, was $278.2 million, $252.7 million and $253.0 million, respectively. Estimated future amortization expense related to intangible assets at December 31, 2021, is as follows: (in millions) Annual 2022 $ 402.7 2023 372.7 2024 345.0 2025 324.1 2026 302.7 Thereafter 2,023.4 Total future amortization expense $ 3,770.6

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Other Assets	Other Assets Other assets consisted of the following: (in millions) December 31, December 31, Investments in affiliated companies (Note 9) $ 240.5 $ 133.6 Right-of-use lease assets (Note 2 and 13) 145.1 59.8 Interest rate swaps (Notes 12 and 19) 12.1 — Other 61.3 29.1 Total other assets $ 459.0 $ 222.5

Investments in Affiliated Compa

Investments in Affiliated Companies	12 Months Ended
	Dec. 31, 2021
Investments in Affiliated Companies [Abstract]
Investments in Affiliated Companies	Investments in Affiliated Companies Investments in affiliated companies represent our investment in non-consolidated domestic and foreign entities. These entities are in businesses similar to ours. We use the equity method to account for investments in affiliates where we are able to exercise significant influence. For these investments, we adjust the carrying value for our proportionate share of the affiliates’ earnings, losses and distributions, as well as for purchases and sales of our ownership interest. We acc ount for nonmarketable investments in equity securities in which we are not able to exercise significant influence, our “Cost Method Investments”, at our initial cost, minus any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. For these investments, we adjust the carryin g value for any purchases or sales of our ownership interests. We record any dividends received from these investments as other income in non-operating income and expense. We have elected to account for our investment in a limited partnership, which is not material, using the net asset value fair value practical expedient. Gains and losses on this investment, which are not material, are included in other income and expense in the consolidated statements of income. During 2021, we recorded a $12.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer. During 2020, we recorded a $4.8 million impairment loss of a Cost Method investment, partially offset by a $2.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer. During 2019, we recorded a $31.2 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer, partially offset by a $10.0 million impairment loss of other Cost Method investments. These gains and losses are included in other income and expense in the consolidated statements of income. Investments in affiliated companies consisted of the following: (in millions) December 31, December 31, Equity Method investments $ 46.1 $ 46.1 Cost Method Investments 192.6 87.5 Limited Partnership investment 1.8 — Total investments in affiliated companies (Note 8) $ 240.5 $ 133.6 These balances are included in other assets in the consolidated balance sheets. The increase in Cost Method investments is due primarily due to investments we made during 2021 recorded in all three of our Operating Segments and a gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer . For one of these costs method investments, we paid cash and also have a contingent consideration obligation due in 2022. In addition, for this investment, under the terms of the purchase agreement, there are call and put options associated with this investment that are exercisable in 2024 and 2025, subject to certain restrictions. The fair value of the call option is included in other assets on our balance sheet. The fair value of the put option is included in other liabilities on our balance sheet, and will be adjusted to fair value at each reporting date. See Note 11, “Other Liabilities,” and Note 19, “Fair Value,” for additional information about the contingent consideration and put option. Earnings from equity method investments, which are included in other non-operating income and expense, and dividends received from equity method investments consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Earnings from equity method investments (Note 20) $ 12.0 $ 8.9 $ 13.2 Dividends received from equity method investments $ 11.0 $ 8.2 $ 10.3

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2021
Other Liabilities, Current [Abstract]
Other Current Liabilities	Other Current Liabilities Other current liabilities consisted of the following: (in millions) December 31, December 31, Income taxes payable (Note 3 and Note 17) $ 351.1 $ 7.8 Accrued payroll and employee benefits 279.9 147.9 Deferred revenue (Note 15) 133.6 79.3 Accrued legal and regulatory (Note 22) 85.6 76.0 Operating lease liabilities (Note 13) 38.4 16.9 Contingent consideration (Note 19) 16.8 37.8 Other 66.8 39.5 Total other current liabilities $ 972.2 $ 405.2 Income taxes payable at December 31, 2021, includes income taxes payable resulting from the sale of our Healthcare business. The December 31, 2021 balances of income taxes payable, accrued payroll and employee benefits, deferred revenue, operating lease liabilities, contingent consideration and other all include liabilities assumed from our acquisition of Neustar and Sontiq. See Footnote 2, “Business Acquisitions,” for additional information. The increase in accrued payroll and employee benefits is also due to an increase related to our improved operating results in 2021 compared with 2020. Contingent consideration that was accrued as of December 31, 2020 was paid out in the second quarter of 2021.

Other Liabilities

Other Liabilities	12 Months Ended
	Dec. 31, 2021
Other Liabilities, Noncurrent [Abstract]
Other Liabilities	Other Liabilities Other liabilities consisted of the following: (in millions) December 31, December 31, Operating lease liabilities (Note 13) $ 119.1 $ 49.0 Unrecognized tax benefits, net of indirect tax effects (Note 17) 40.7 34.4 Interest rate swaps (Notes 12 and 19) 34.5 89.7 Put option (Note 9 and 19) 11.9 — Deferred revenue (Note 15) 6.5 2.6 Other 20.2 34.5 Total other liabilities $ 232.9 $ 210.2

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Debt	Debt Debt outstanding consisted of the following: (in millions) December 31, December 31, Senior Secured Term Loan B-6, payable in quarterly installments through December 1, 2028, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (2.75% at December 31, 2021), net of original issue discount and deferred financing fees of $7.7 million and $43.1 million, respectively, at December 31, 2021 $ 3,049.2 $ — Senior Secured Term Loan B-5, payable in quarterly installments through November 15, 2026, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (1.85% at December 31, 2021, and 1.90% at December 31, 2020), net of original issue discount and deferred financing fees of $3.2 million and $7.7 million, respectively, at December 31, 2021, and original issue discount and deferred financing fees of $3.9 million and $9.5 million, respectively, at December 31, 2020 2,227.1 2,335.6 Senior Secured Term Loan A-3, payable in quarterly installments through December 10, 2024, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (1.35% at December 31, 2021 and 1.40% at December 31, 2020), net of original issue discount and deferred financing fees of $1.9 million and $1.2 million, respectively, at December 31, 2021, and original issue discount and deferred financing fees of $2.6 million and $1.6 million, respectively, at December 31,2020 1,089.4 1,117.0 Senior Secured Revolving Credit Facility — — Other notes payable — 1.4 Finance leases 0.2 0.2 Total debt 6,365.9 3,454.2 Less short-term debt and current portion of long-term debt (114.6) (55.5) Total long-term debt $ 6,251.3 $ 3,398.7 Excluding any potential additional principal payments which may become due on the Senior Secured Credit Facility based on excess cash flows of the prior year, scheduled future maturities of total debt at December 31, 2021, were as follows: (in millions) December 31, 2022 $ 114.6 2023 114.6 2024 1,034.5 2025 57.0 2026 2,165.0 Thereafter 2,945.0 Unamortized original issue discounts and deferred financing fees (64.8) Total debt $ 6,365.9 Senior Secured Credit Facility On June 15, 2010, we entered into a Senior Secured Credit Facility with various lenders. This facility has been amended several times and currently consists of the Senior Secured Term Loan B-6, Senior Secured Term Loan B-5, Senior Secured Term Loan A-3 (collectively, the “Senior Secured Term Loans”), and the Senior Secured Revolving Credit Facility. On December 1, 2021, we entered into an agreement to amend certain provisions of the Senior Secured Credit Facility and exercise our right to draw additional debt in an amount of $3,100.0 million, less original issue discount and deferred financing fees of $7.8 million and $43.6 million, respectively. Proceeds from the incremental loan on the Senior Secured Credit Facility were used to fund the acquisition of Neustar. In addition, on December 1, 2021, we entered into a Second Lien Credit Agreement to obtain term loans (the “Second Lien Term Loan”) in an aggregate amount of $640.0 million, less original issue discount and deferred financing fees of $3.2 million and $14.3 million, respectively, used to fund the acquisition of Sontiq. On December 23, 2021, we fully repaid the Second Lien Term Loan using a portion of the proceeds from our sale of the Healthcare business. As a result of the prepayment, we expensed $3.2 million and $14.2 million, respectively, of the unamortized original issue discount and deferred fees to other income and expense in the consolidated statement of income. During 2021 and 2020, we prepaid $85.0 million and $150.0 million, respectively, of our Senior Secured Term Loans, funded from our cash on hand. As a result of these prepayments, we expensed $0.5 million and $0.9 million, respectively, of the unamortized original issue discount and deferred fees to other income and expense in the consolidated statement of income. Interest rates on the Senior Secured Term Loan B-6 are based on the London Interbank Offered Rate (“LIBOR”) with a floor of 0.50%, unless otherwise elected, plus a margin of 2.25% or 2.00% depending on our total net leverage ratio. The Company is required to make principal payments at the end of each quarter of 0.25% of the 2021 incremental principal balance plus additional borrowings with the remaining balance due December 1, 2028. Interest rates on the Senior Secured Term Loan B-5 are based on LIBOR, unless otherwise elected, plus a margin of 1.75%. The Company is required to make principal payments at the end of each quarter of 0.25% of the 2019 refinanced principal balance plus additional borrowings with the remaining balance due November 15, 2026. Interest rates on Senior Secured Term Loan A-3 are based on LIBOR, unless otherwise elected, plus a margin of 1.25%, 1.50% or 1.75% depending on our total net leverage ratio. The Company is required to make principal payments of 0.625%, of the 2019 refinanced principal balance plus additional borrowings, at the end of each quarter through December 2021, increasing to 1.25% each quarter thereafter, with the remaining balance due December 10, 2024. Interest rates on the Senior Secured Revolving Credit Facility are based on LIBOR, unless otherwise elected, plus a margin of 1.25%, 1.50% or 1.75% depending on our total net leverage ratio. There is a 0.20%, 0.25% or 0.30% annual commitment fee, depending on our total net leverage ratio, payable quarterly based on the undrawn portion of the Senior Secured Revolving Credit Facility. The commitment under the Senior Secured Revolving Line of Credit expires on December 10, 2024. Interest rates on the Second Lien Term Loan were based on LIBOR, unless otherwise elected, plus a margin of 5.00%. The Company was required to repay the principal balance plus interest due December 1, 2029, however, the loan was repaid in full on December 23, 2021. The Company may be required to make additional payments based on excess cash flows of the prior year, as defined in the agreement. Depending on the senior secured net leverage ratio for the year, a principal payment of between zero and fifty percent of the excess cash flows will be due the following year. There is no required excess cash flow payment due for 2022. Additional payments based on excess cash flows could be due in future years. As of December 31, 2021, we had no outstanding balance under the Senior Secured Revolving Credit Facility and $0.1 million of outstanding letters of credit, and could have borrowed up to the remaining $299.9 million available. TransUnion also has the ability to request incremental loans on the same terms under the Senior Secured Credit Facility up to the sum of the greater of $1,000.0 million and 100% of Consolidated EBITDA, minus the amount of secured indebtedness and the amount incurred prior to the incremental loan, and may incur additional incremental loans so long as the senior secured net leverage ratio does not exceed 4.25-to-1, subject to certain additional conditions and commitments by existing or new lenders to fund any additional borrowings. With certain exceptions, the Senior Secured Credit Facility obligations are secured by a first-priority security interest in substantially all of the assets of Trans Union LLC, including its investment in subsidiaries. The Senior Secured Credit Facility contains various restrictions and nonfinancial covenants, along with a senior secured net leverage ratio test. The nonfinancial covenants include restrictions on dividends, investments, dispositions, future borrowings and other specified payments, as well as additional reporting and disclosure requirements. The senior secured net leverage test must be met as a condition to incur additional indebtedness, make certain investments, and may be required to make certain restricted payments. The senior secured net leverage ratio must not exceed 5.5-to-1 at any such measurement date. Under the terms of the Senior Secured Credit Facility, TransUnion may make dividend payments up to the greater of $100 million or 10.0% of Consolidated EBITDA per year, or an unlimited amount provided that no default or event of default exists and so long as the total net leverage ratio does not exceed 4.75-to-1. As of December 31, 2021, we were in compliance with all debt covenants. Interest Rate Hedging On December 23, 2021, we entered into new interest rate swap agreements with various counter-parties that effectively fix our LIBOR exposure on a portion of our Senior Secured Term Loan or similar replacement debt. The new swaps commenced on December 31, 2021, and expires on December 31, 2026, with a current aggregate notional amount of $1,600.0 million that amortizes each quarter. The tranche requires TransUnion to pay fixed rates varying between 1.4280% and 1.4360% in exchange for receiving a variable rate that matches the variable rate on our loans. We have designated these swap agreements as cash flow hedges. On March 10, 2020, we entered into two new interest rate swap agreements with various counter-parties that effectively fix our LIBOR exposure on a portion of our Senior Secured Term Loans or similar replacement debt. The first swap commenced on June 30, 2020, and expires on June 30, 2022, with a current aggregate notional amount of $1,120.0 million that amortizes each quarter. The first swap requires TransUnion to pay fixed rates varying between 0.5200% and 0.5295% in exchange for receiving a variable rate that matches the variable rate on our loans. The second swap commences on June 30, 2022, and expires on June 30, 2025, with an initial aggregate notional amount of $1,110.0 million that amortizes each quarter after it commences. The second swap requires TransUnion to pay fixed rates varying between 0.9125% and 0.9280% in exchange for receiving a variable rate that matches the variable rate on our loans. We have designated these swap agreements as cash flow hedges. On December 17, 2018, we entered into interest rate swap agreements with various counter-parties that effectively fix our LIBOR exposure on a portion of our Senior Secured Term Loans or similar replacement debt, which is currently fixed at 2.702% and 2.706%. We have designated these swap agreements as cash flow hedges. The current aggregate notional amount under these agreements is $1,390.0 million, decreasing each quarter until the second agreement terminates on December 30, 2022. On December 18, 2015, we entered into interest rate cap agreements with various counter-parties that effectively capped our LIBOR exposure on a portion of our Senior Secured Term Loans or similar replacement debt at 0.75% beginning June 30, 2016. These cap agreements expired on June 30, 2020, and were previously designated as cash flow hedges. The change in the fair value of our hedging instruments, included in our assessment of hedge effectiveness, is recorded in other comprehensive income, and reclassified to interest expense when the corresponding hedged debt affects earnings. The net change in the fair value of the swaps resulted in an unrealized gain of $67.3 million ($50.5 million, net of tax), and an unrealized loss of $43.5 million ($32.7 million, net of tax) and $35.4 million ($26.7 million, net of tax) for the years ended December 31, 2021, 2020 and 2019, respectively, recorded in other comprehensive income. Interest expense on the swaps in the twelve months ended December 31, 2021, 2020 and 2019 was $41.8 million ($31.4 million, net of tax), $32.3 million ($23.3 million, net of tax) and $5.6 million ($4.2 million), respectively. We expect to recognize a loss of approximately $47.1 million as interest expense due to our expectation that LIBOR will exceed the fixed rates of interest over the next twelve months. The net change in the fair value of the caps resulted in a recognition into interest expense previously unrealized loss of $4.1 million ($2.8 million, net of tax), and an unrealized loss of $11.0 million ($8.2 million, net of tax), for the years ended December 31, 2020 and 2019, respectively, recorded in other comprehensive income. Interest expense reclassified from other comprehensive income to interest expense related to the fair value of the portion of the caps expiring in the twelve-month period of 2020 and 2019 was an income of expense of $6.7 million ($5.1 million net of tax), and income of $1.9 million ($1.4 million net of tax), respectively. These cap agreements expired on June 30, 2020. Fair Value of Debt As of December 31, 2021, the fair value of our Senior Secured Term Loan B-6, excluding original issue discounts and deferred fees, was approximately $3,096.1 million. As of December 31, 2021 and December 31, 2020, the fair value of our Senior Secured Term Loan B-5, excluding original issue discounts and deferred fees, was approximately $2,217.0 million and $2,351.9 million, respectively. As of December 31, 2021 and December 31, 2020, the fair value of our variable-rate Senior Secured Term Loan A-3, excluding original issue discounts and deferred fees was approximately $1,076.1 million and $1,112.8 million, respectively. The fair values of our variable-rate term loans are determined using Level 2 inputs, based on quoted market prices for the publicly traded instruments.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Lessee, Operating Leases [Text Block]	Leases As a result of our acquisitions of Neustar and Sontiq on December 31, 2021, we acquired additional leases in 2021. Our lease obligations consist of operating leases for office space and data centers and a small number of finance leases for equipment. Our operating leases have remaining lease terms of up to 11.1 years. As of December 31, 2021 and December 31, 2020 the weighted-average remaining lease terms were 6.6 years and 5.4 years, respectively. We have options to extend many of our operating leases for an additional period of time and options to terminate several of our operating leases early. The lease term consists of the non-cancelable period of the lease, periods covered by options to extend the lease if we are reasonably certain to exercise the option, periods covered by an option to terminate the lease if we are reasonably certain not to exercise the option, and periods covered by an option to extend or not to terminate the lease in which the exercise of the option is controlled by the lessor. On the commencement date of an operating lease, we record a right-of-use asset (“ROU asset”), which represents our right to use or control the use of the specified asset for the lease term, and an offsetting lease liability, which represents our obligation to make lease payments arising from the lease, based on the present value of the net fixed future lease payments due over the initial lease term. We use an estimate of the incremental borrowing rate for similarly rated debt issuers, at the inception of the lease or when the lease is assumed, as the discount rate to determine the present value of the net fixed future lease payments, except for leases where the interest rate implicit in the lease is readily determinable. As of December 31, 2021 and December 31, 2020, the weighted-average discount rate at lease inception used to calculate the present value of the fixed future lease payments were 4.1% and 5.7%, respectively. Lease accounting guidance under ASU 842 require us to expense the net fixed payments of operating leases on a straight-line basis over the lease term. ASU 842 requires us to include any built up deferred or prepaid rent balance resulting from the difference between the straight-line expense and the cash payments as a component of our ROU asset. Also included in our ROU asset is any monthly prepayment of rent. Our rent expense is typically due on the first day of each month, and we typically pay rent several weeks before it is due, so at any given month end, we will have a prepaid rent balance that is included as a component of our ROU asset. Most of our operating leases contain variable non-lease components consisting of maintenance, insurance, utilities, taxes and similar costs of the office and data center space we occupy. We have adopted the practical expedient to not separate these non-lease components from the lease components and instead account for them as a single lease component for all of our leases. We straight-line the net fixed payments of operating leases over the lease term and expense the variable lease payments in the period in which we incur the obligation to pay such variable amounts. These variable lease payments are not included in our calculation of our ROU assets or lease liabilities. We have no significant short-term operating leases, finance leases, or subleases. ROU assets are included in Other Assets, and operating lease liabilities are included in Other Current Liabilities and Other Liabilities in our Consolidated Balance Sheet. Finance lease assets are included in Property, Plant and Equipment, and finance lease liabilities are included in the Current Portion of Long-term Debt and Long-term Debt in our Consolidated Balance Sheet. See Note 8, “Other Assets,” Note 10, “Other Current Liabilities,” Note 11, “Other Liabilities,” and Note 12, “Debt,” for additional information about these items. For the years ended December 31, 2021, 2020, 2019 our operating lease costs, including fixed, variable and short-term lease costs, were $30.4 million, $33.4 million, $32.4 million, respectively. Cash paid for operating leases are included in operating cash flows, and were $30.9 million, $34.2 million, and $32.4 million, for the years ended December 31, 2021, 2020, and 2019, respectively. Our finance lease amortization expense, interest expense, and cash paid were not significant for the reported periods. We have elected to use the portfolio approach to assess the discount rate we use to calculate the present value of our future lease payments. Using this approach does not result in a materially different outcome compared with applying separate discount rates to each lease in our portfolio. We have adopted an accounting policy to recognize rent expense for short-term leases, those leases with initial lease terms of twelve months or less, on a straight-line basis in our income statement. Future fixed payments for non-cancelable operating leases and finance leases in effect as of December 31, 2021, are payable as follows: (in millions) Operating Leases Finance Leases Total 2022 $ 42.4 $ 0.1 $ 42.5 2023 35.8 0.1 35.9 2024 24.1 — 24.1 2025 16.7 — 16.7 2026 13.3 — 13.3 Thereafter 46.8 — 46.8 Less imputed interest (21.6) — (21.6) Totals $ 157.5 $ 0.2 $ 157.7

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Attributable to Parent [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Stockholders’ Equity Common Stock Dividends During the second quarter of 2021, we increased our quarterly dividend from $0.075 per share to $0.095 per share. During 2021, 2020 and 2019, we paid dividends of $69.8 million, $57.6 million and $56.8 million, respectively. Dividends declared accrue to outstanding restricted stock units and are paid to employees as dividend equivalents when the restricted stock units vest. Any determination to pay dividends in the future will be at the discretion of our board of directors and will depend on a number of factors, including our liquidity, results of operations, financial condition, contractual restrictions, restrictions imposed by applicable law and other factors our board of directors deems appropriate. We currently have capacity and intend to continue to pay a quarterly dividend, subject to approval by our board. Treasury Stock On February 13, 2017, our board of directors authorized the repurchase of up to $300.0 million of our common stock over the next 3 years. Our board of directors removed the three-year time limitation on February 8, 2018. To date, we have repurchased $133.5 million of our common stock and have the ability to repurchase the remaining $166.5 million. We have no obligation to repurchase additional shares. Any determination to repurchase additional shares will be at the discretion of management and will depend on a number of factors, including our liquidity, results of operations, financial condition, contractual restrictions, restrictions imposed by applicable law, market conditions, the cost of repurchasing shares, the availability of alternative investment opportunities and other factors management deems appropriate. Any repurchased shares will have the status of treasury shares and may be used, if and when needed, for general corporate purposes. During 2021, 2020 and 2019 1.2 million, 1.1 million and 1.7 million outstanding employee restricted stock units vested and became taxable to the employees. Employees satisfy their payroll tax withholding obligations in a net share settlement arrangement. During 2021, 2020 and 2019 we remitted cash to the respective governmental agencies equivalent to the value of the shares employees used to satisfy their withholding obligations of $36.8 million, $36.1 million and $39.2 million, respectively. Preferred Stock

Revenue

Revenue	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue All of our revenue is derived from contracts with customers and is reported as revenue in the consolidated statements of income generally as, or at the point in time, the performance obligation is satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to a customer. We have contracts with two general groups of performance obligations: those that require us to stand ready to provide goods and services to a customer to use as and when requested (“Stand Ready Performance Obligations”) and those that do not require us to stand ready (“Other Performance Obligations”). Our Stand Ready Performance Obligations include obligations to stand ready to provide data, process transactions, access our databases, software-as-a-service and direct-to-consumer products, provide rights to use our intellectual property and other services. Our Other Performance Obligations include the sale of certain batch data sets and various professional and other services. Most of our Stand Ready Performance Obligations consist of a series of distinct goods and services that are substantially the same and have the same monthly pattern of transfer to our customers. We consider each month of service in this time series to be a distinct performance obligation and, accordingly, recognize revenue over time. For a majority of these Stand Ready Performance Obligations, the total contractual price is variable because our obligation is to process an unknown quantity of transactions, as and when requested by our customers, over the contract period. We allocate the variable price to each month of service using the time-series concept and recognize revenue based on the most likely amount of consideration to which we will be entitled , which is generally the amount we have the right to invoice. This monthly amount can be based on the actual volume of units delivered or a guaranteed minimum, if higher. Occasionally we have contracts where the amount we will be entitled to for the transactions processed is uncertain, in which case we estimate the revenue based on what we consider to be the most likely amount of consideration we will be entitled to, and adjust any estimates as facts and circumstances evolve. For all contracts that include a Stand Ready Performance Obligation with variable pricing, we are unable to estimate the variable price attributable to future performance obligations because the number of units to be purchased is not known. As a result, we use the exception available to forgo disclosures about revenue attributable to the future performance obligations where we recognize revenue using the time-series concept as discussed above, including those qualifying for the right to invoice practical expedient. We also use the exception available to forgo disclosures about revenue attributable to contracts with expected durations of one year or less. Certain of our Other Performance Obligations, including certain batch data sets and certain professional and other services, are delivered at a point in time. Accordingly, we recognize revenue upon delivery, once we have satisfied that obligation. For certain Other Performance Obligations, including certain professional and other services, we recognize revenue over time, based on an estimate of progress towards completion of that obligation. These contracts are not material. In certain circumstances we apply the revenue recognition guidance to a portfolio of contracts with similar characteristics. We use estimates and assumptions when accounting for a portfolio that reflect the size and composition of the portfolio of contracts. Our contracts include standard commercial payment terms generally acceptable in each region, and do not include financing with extended payment terms. We have no significant obligations for refunds, warranties, or similar obligations . Our revenue does not include taxes collected from our customers. Accounts receivable are shown separately on our balance sheet. Contract assets and liabilities result due to the timing of revenue recognition, billings and cash collections. Contract assets include our right to payment for goods and services already transferred to a customer when the right to payment is conditional on something other than the passage of time, for example, contracts pursuant to which we recognize revenue over time but do not have a contractual right to payment until we complete the contract. Contract assets are included in our other current assets and are not material as of December 31, 2021 and 2020. As our contracts with customers generally have a duration of one year or less, our contract liabilities consist of deferred revenue that is primarily short-term in nature. Contract liabilities include current and long-term deferred revenue that is included in other current liabilities and other liabilities. We expect to recognize the December 31, 2021, current deferred revenue balance as revenue during 2022. The majority of our long-term deferred revenue, which is not material, is expected to be recognized in less than two years. We have certain contracts that have a duration of more than one year. For these contracts, the transaction price allocable to the future performance obligations is primarily fixed but contains a variable component. There is one material fixed fee contract with a duration of more than one year, and for this contract, we expect to recognize revenue of approximately $117.0 million over the next two years and $136.5 million thereafter. For additional disclosures about the disaggregation of our revenue see Note 20, “Reportable Segments.”

Earnings per share

Earnings per share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Earnings Per Share Basic earnings per share represents income available to common stockholders divided by the weighted average number of common shares outstanding during the reported period. Diluted earnings per share reflects the effect of the increase in shares outstanding determined by using the treasury stock method for awards issued under our incentive stock plans. As of December 31, 2021, 2020, and 2019 there were less than 0.1 million anti-dilutive weighted stock-based awards outstanding. As of December 31, 2021, 2020, and 2019, there were 0.1 million, 1.3 million and 1.1 million, respectively, of contingently issuable performance-based stock awards outstanding that were excluded from the diluted earnings per share calculation because the contingencies had not been met. Basic and diluted weighted average shares outstanding and earnings per share were as follows: Twelve Months Ended December 31, (in millions, except per share data) 2021 2020 2019 Income from continuing operations $ 370.5 $ 305.7 $ 304.0 Less: income from continuing operations attributable to noncontrolling interests (15.0) (12.4) (5.1) Income from continuing operations attributable to TransUnion $ 355.5 $ 293.4 $ 298.9 Discontinued operations, net of tax 1,031.7 49.8 48.0 Net income attributable to TransUnion $ 1,387.1 $ 343.2 $ 346.9 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 1.86 $ 1.54 $ 1.59 Discontinued operations, net of tax 5.39 0.26 0.26 Net Income attributable to TransUnion $ 7.25 $ 1.81 $ 1.85 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 1.84 $ 1.53 $ 1.56 Discontinued operations, net of tax 5.35 0.26 0.25 Net Income attributable to TransUnion $ 7.19 $ 1.79 $ 1.81 Weighted-average shares outstanding: Basic 191.4 189.9 187.8 Dilutive impact of stock based awards 1.6 2.3 4.1 Diluted 193.0 192.2 191.8

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Federal Current $ 62.0 $ 55.9 $ 39.1 Deferred (9.3) (8.0) (1.5) State Current 18.8 11.6 2.3 Deferred — (4.4) (7.9) Foreign Current 67.3 52.4 52.1 Deferred (7.9) (23.7) (13.6) Provision for income taxes $ 130.9 $ 83.7 $ 70.5 The components of income before income taxes consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Domestic $ 318.3 $ 258.5 $ 267.6 Foreign 183.1 131.0 107.0 Income from continuing operations before income taxes $ 501.4 $ 389.5 $ 374.5 The effective income tax rate reconciliation consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Income taxes at statutory rate $ 105.3 21.0 % $ 81.8 21.0 % $ 78.6 21.0 % Increase (decrease) resulting from: State taxes, net of federal benefit 15.5 3.1 % 8.4 2.2 % (1.0) (0.3) % Foreign rate differential (6.8) (1.3) % (9.4) (2.4) % 10.6 2.8 % Excess tax benefits on stock-based compensation (10.8) (2.2) % (25.3) (6.5) % (37.8) (10.1) % Foreign tax law changes 22.7 4.5 % (0.1) — % (6.5) (1.7) % Uncertain tax positions 4.6 0.9 % 8.3 2.1 % 1.9 0.5 % Valuation allowances (5.0) (1.0) % 8.3 2.1 % (0.8) (0.2) % Foreign withholding taxes 6.5 1.3 % 5.2 1.3 % 12.4 3.3 % U.S. Federal tax on foreign earnings (15.1) (3.0) % 4.9 1.2 % 12.0 3.2 % U.S. Federal R&D tax credit (6.4) (1.3) % (4.4) (1.1) % (2.9) (0.8) % Nondeductible expenses 20.0 4.0 % 2.6 0.7 % 5.7 1.5 % Other 0.4 0.1 % 3.3 0.9 % (1.7) (0.5) % Total $ 130.9 26.1 % $ 83.7 21.5 % $ 70.5 18.8% For 2021, we reported a 26.1% effective tax rate, which is higher than the 21.0% U.S. federal corporate statutory rate due primarily to recording tax expense related to the remeasurement of our U.K. deferred taxes to reflect an increase in the U.K. corporate tax rate enacted in the second quarter 2021 and nondeductible transaction costs and penalties, partially offset by excess tax benefits on stock based compensation and a tax benefit related to electing the Global Intangible Low Tax Income (“GILTI”) high-tax exclusion retroactively for the 2018 and 2019 tax years. On July 20, 2020, the U.S. Treasury issued and enacted final regulations related to GILTI that allow certain U.S. taxpayers to elect to exclude foreign income that is subject to a high effective tax rate from their GILTI inclusions. The GILTI high-tax exclusion is an annual election and is retroactively available. For 2020, we reported a 21.5% effective tax rate, which is higher than the 21.0% U.S. federal corporate statutory rate due primarily to an increase in state taxes, valuation allowances on foreign tax credit carryforwards, and uncertain tax positions including related interest and penalties, partially offset by excess tax benefits on stock based compensation and foreign taxes in jurisdictions which have tax rates lower than the U.S. federal corporate statutory rate. For 2019, we reported a 18.8% effective tax rate, which is lower than the 21.0% U.S. federal corporate statutory rate due primarily to excess tax benefits on stock based compensation, partially offset by U.S. federal tax on foreign earnings and foreign taxes in jurisdictions which have tax rates that are higher than the U.S. federal corporate statutory rate. We also changed our indefinite reinvestment assertion on our unremitted foreign earnings during the fourth quarter 2019, such that management intends to repatriate current year foreign earnings, net of working capital requirements, and indefinitely reinvest prior years’ foreign earnings. The change in assertion had an immaterial impact on the current year effective tax rate. Components of net deferred income tax consisted of the following: (in millions) December 31, 2021 December 31, 2020 Deferred income tax assets: Compensation $ 16.8 $ 18.5 Employee benefits 22.5 15.1 Legal reserves and settlements 13.2 13.5 Hedge investments 5.6 22.2 Loss and tax credit carryforwards 169.0 130.1 Leases 41.5 17.5 Other 38.4 16.9 Gross deferred income tax assets $ 307.0 $ 233.8 Valuation allowance (70.8) (65.7) Total deferred income tax assets, net $ 236.2 $ 168.0 Deferred income tax liabilities: Depreciation and amortization (947.5) (520.5) Right of use asset (38.9) (16.1) Taxes on unremitted foreign earnings (10.0) (10.8) Financing related costs (0.5) (0.8) Investment in affiliated companies (8.9) (4.6) Other (8.1) (8.4) Total deferred income tax liability (1,013.9) (561.4) Net deferred income tax liability $ (777.8) $ (393.3) Deferred tax assets and liabilities result from temporary differences between tax and accounting methods. Our balance sheet includes a deferred tax asset of $10.0 million and $3.4 million at December 31, 2021 and 2020, respectively, which is included in other assets. If certain deferred tax assets are not likely recoverable in future years a valuation allowance is recorded. As of December 31, 2021 and 2020, a valuation allowance of $70.8 million and $65.7 million, respectively, reduced deferred tax assets related to worldwide net operating losses and tax credit carryforwards. Our estimate of the amount of the deferred tax asset we can realize requires significant assumptions about projected revenues and income that are impacted by future market and economic conditions. Our carryforwards will expire as follows: U.S. federal net operating loss carryforwards over one year to an indefinite number of years, foreign loss carryforwards over one year to an indefinite number of years, foreign tax credit carryforwards over nine years, interest expense carryforwards over an indefinite number of years, state net operating loss carryforwards over one year to an indefinite number of years and state tax credit carryforwards over one year to an indefinite number of years. As of December 31, 2021, the deferred tax assets associated with U.S. foreign tax credit carryforwards and U.S. federal net operating loss carryforwards were $66.1 million and $12.9 million, respectively. Deferred tax assets associated with foreign net operating loss carryforwards and foreign interest expense carryforwards were $21.7 million and $33.4 million, respectively. Deferred tax assets associated with U.S. federal and state interest expense carryforwards is $17.4 million. Deferred tax assets associated with other loss and tax credit carryforwards were not significant. The total amount of gross unrecognized tax benefits as of December 31, 2021, 2020 and 2019 are $45.8 million, $36.9 million and $32.8 million, respectively. The amounts that would affect the effective tax rate if recognized are $28.3 million, $18.5 million and $13.6 million, respectively. The total amount of gross unrecognized tax benefits consisted of the following: (in millions) December 31, 2021 December 31, 2020 December 31, 2019 Balance as of beginning of period $ 36.9 $ 32.8 $ 19.6 Increase in tax positions due to acquisition 5.3 — — Increase in tax positions of prior years 5.6 6.2 0.5 Decrease in tax positions of prior years (4.5) (3.6) (0.5) Increase in tax positions of current year 2.8 1.6 13.2 Reductions relating to settlement and lapse of statute (0.4) — — Balance as of end of period $ 45.8 $ 36.9 $ 32.8 We classify interest and penalties as income tax expense in the consolidated statements of income and their associated liabilities as other liabilities in the consolidated balance sheets. Interest and penalties on unrecognized tax benefits were $7.6 million and $4.8 million, respectively, for the years ended December 31, 2021 and December 31, 2020, and not significant for the year ended December 31, 2019. We are regularly audited by federal, state and foreign taxing authorities. Given the uncertainties inherent in the audit process, it is reasonably possible that certain audits could result in a significant increase or decrease in the total amounts of unrecognized tax benefits. An estimate of the range of the increase or decrease in unrecognized tax benefits due to audit results cannot be made at this time. Tax years 2009 and forward remain open for examination in some foreign jurisdictions, 2015 and forward in some state jurisdictions, and 2012 and forward for U.S. federal purposes.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments	Stock-Based Compensation For the years ended December 31, 2021, 2020 and 2019, we recognized stock-based compensation expense of $70.1 million, $45.9 million and $55.3 million, respectively, with related income tax benefits of approximately $10.0 million, $8.4 million and $8.0 million, respectively. Of the stock-based compensation expense recognized in 2021, 2020 and 2019, $0.9 million, $1.6 million and $7.0 million, respectively, was from cash-settleable awards. Under the TransUnion Holding Company, Inc. 2012 Management Equity Plan (the “2012 Plan”), stock-based awards could be issued to executive officers, employees and independent directors of the Company. A total of 10.1 million shares were authorized for grant under the 2012 Plan. Effective upon the closing of our IPO, the Company’s board of directors and its stockholders adopted the TransUnion 2015 Omnibus Incentive Plan, which has since been amended and restated (the “2015 Plan”), and no more shares can be issued under the 2012 Plan. During 2020, we increased the authorized shares available under the 2015 plan to a total of 12.4 million shares. The 2015 Plan provides for the granting of stock options, restricted stock and other stock-based or performance-based awards to key employees, directors or other persons having a service relationship with the Company and its affiliates. As of December 31, 2021, there were approximately 2.0 million of unvested awards outstanding and approximately 4.0 million of awards have vested under the 2015 Plan. Effective upon the closing of the IPO, the Company’s board of directors and its stockholders adopted the TransUnion 2015 Employee Stock Purchase Plan, which has since been amended and restated (the “ESPP”). A total of 2.4 million shares have been authorized to be issued under the ESPP. The ESPP provides certain employees of the Company with an opportunity to purchase the Company’s common stock at a discount. As of December 31, 2021, the Company has issued approximately 1.1 million shares of common stock under the ESPP. 2012 Plan Stock Options Stock options granted under the 2012 Plan have a 10 year term. For stock options granted to employees, 40% generally vest based on the passage of time (service condition options), and 60% generally vest based on the passage of time, subject to meeting certain stockholder return on investment conditions (market condition options). These stockholder return on investment conditions were satisfied in February 2017, and all remaining outstanding stock options now vest solely on the passage of time. All stock options granted to non-employee directors vest based on the passage of time. Service condition options were valued using the Black-Scholes valuation model and vest over a 5 year service period, with 20% generally vesting one year after the grant date, and 5% vesting each quarter thereafter. Compensation costs for the service condition options are recognized on a straight-line basis over the requisite service period for the entire award. Market condition options were valued using a risk-neutral Monte Carlo valuation model, with assumptions similar to those used to value the service condition options, and vest over a 5 year service period now that the market conditions have been satisfied. There were no stock options granted during 2021, 2020, and 2019. Stock option activity as of December 31, 2021 and 2020, and for the year ended December 31, 2021, consisted of the following: Shares Weighted Weighted Aggregate Outstanding as of December 31, 2020 571,817 $ 8.58 2.7 $ 51.8 Granted — — Exercised (329,283) 8.97 Forfeited — — Expired — — Outstanding as of December 31, 2021 242,534 8.05 1.5 $ 26.8 Expected to vest as of December 31, 2021 — $ — 0.0 $ — Exercisable as of December 31, 2021 242,534 $ 8.05 1.5 $ 26.8 As of December 31, 2021, there was no stock-based compensation expense remaining to be recognized in future years related to options. During 2021, cash received from the exercise of stock options was $2.9 million and the tax benefit realized from the exercise of stock options was $7.7 million. The intrinsic value of options exercised and the fair value of options vested for the periods presented are as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Intrinsic value of options exercised $ 31.4 $ 71.1 $ 106.4 Total fair value of options vested $ 1.7 $ 4.5 $ 7.4 2015 Plan Restricted Stock Units During 2021, 2020 and 2019, restricted stock units were granted under the 2015 Plan. Restricted stock units issued to date generally consist of: 50% service-based restricted stock units that vest based on passage of time and 50% performance-based awards consisting of performance-based restricted stock units that vest based on the passage of time, subject to meeting certain 3-year cumulative revenue and Adjusted EBITDA targets, and market-based restricted stock units that vest based on the passage of time, subject to meeting certain relative total stockholder return (“TSR”) targets. For the performance awards, including the market-based performance awards, between zero and 200% of the units granted may eventually vest, based upon the final cumulative revenue and Adjusted EBITDA and TSR achievement relative to the targets over the 3-year measurement period. Restricted stock units generally vest 3 years from the grant date, subject to meeting any performance and market conditions. We occasionally issue off-cycle or special grants that could have performance measurements and vesting terms. Service-based and performance-based restricted stock units are valued on the award grant date at the closing market price of our stock. Market-based awards are valued using a risk-neutral Monte-Carlo model, with assumptions similar to those used to value the 2012 Plan market-condition options, based on conditions that existed on the grant date of the award. Restricted stock unit activity as of December 31, 2021 and 2020, and for the year ended December 31, 2021, consisted of the following: Shares Weighted Weighted Aggregate Outstanding as of December 31, 2020 2,187,949 78.85 1.0 $ 217.1 Granted 1,131,318 94.38 Vested (1,125,726) 73.96 Forfeited (188,476) 87.65 Outstanding as of December 31, 2021 2,005,065 $ 90.79 1.0 $ 237.8 Expected to vest as of December 31, 2021 2,057,500 $ 90.60 1.0 $ 244.0 The fair value and intrinsic value of restricted stock units that vested during the year ended December 31, 2021 was $83.3 million and $103.5 million, respectively. As of December 31, 2021, stock-based compensation expense remaining to be recognized in future years related to restricted stock units that we currently expect to vest was $96.8 million, with weighted-average recognition periods of 1.9 years. During 2021, the tax benefit realized from vested restricted stock units was $15.9 million. Other We have certain other stock-based grants outstanding awarded to directors and employees of acquired companies. The shares expected to vest related to these awards are not material.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value	Fair Value The following table summarizes financial instruments measured at fair value, on a recurring basis, as of December 31, 2021: (in millions) Total Level 1 Level 2 Level 3 Assets Interest rate swaps (Note 8 and 12) $ 12.1 $ — $ 12.1 $ — Available-for-sale debt securities (Note 4) 3.1 — 3.1 — Total $ 15.2 $ — $ 15.2 $ — Liabilities Interest rate swaps (Note 11 and 12) $ 34.5 $ — $ 34.5 $ — Put option on Cost Method Investment (Note 9 and 11) 11.9 — — 11.9 Contingent consideration (Note 9 and 10) 16.8 — — 16.8 Total $ 63.2 $ — $ 34.5 $ 28.7 The following table summarizes financial instruments measured at fair value, on a recurring basis, as of December 31, 2020: (in millions) Total Level 1 Level 2 Level 3 Assets Available-for-sale debt securities (Note 4) $ 3.2 $ — $ 3.2 $ — Total $ 3.2 $ — $ 3.2 $ — Liabilities Interest rate swaps (Note 11 and 12) $ 89.7 $ — $ 89.7 $ — Contingent consideration (Note 10) 41.4 — — 41.4 Total $ 131.1 $ — $ 89.7 $ 41.4 Level 2 instruments consist of foreign exchange-traded corporate bonds and interest rate swaps. Foreign exchange-traded corporate bonds are available-for-sale debt securities valued at their current quoted prices. These securities mature between 2027 and 2033. Unrealized gains and losses on available-for-sale debt securities, which are not material, are included in other comprehensive income. The interest rate swaps fair values are determined using the market standard methodology of discounting the future expected net cash receipts or payments that would occur if variable interest rates rise above or fall below the fixed rates of the swaps. The variable interest rates used in the calculations of projected receipts on the swaps are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities. As discussed in Note 12, “Debt,” there are two tranches of interest rate swaps that we entered into in 2020. As of December 31, 2021, one of those tranches is in an asset position, and the other is in a liability position. Level 3 instruments consist of a put option on a cost-method investment we made in 2021 and contingent consideration obligations related to companies we acquired in 2020 and 2021 and a cost method investment we made in 2021. The put option allows the other stockholders to put their equity to TransUnion and require us to purchase their shares, subject to certain restrictions. The fair value of the put option is determined using a Monte Carlo analysis with assumptions that include revenue projections, volatility rates, discount rates and the option period, among others. There was no material change to the fair value of this obligation between October 1, 2021, the date we acquired the obligation, and December 31, 2021. The contingent consideration obligations are payable to the sellers, contingent upon meeting certain revenue performance metrics. The fair values of these obligations are determined based on an income approach, using our expectations of the future expected revenue of the acquired entities. During 2021, we adjusted our acquisition date estimate of the fair value of the 2020 obligations, with an offset to goodwill. During 2021, we also adjusted the carrying value of the 2020 obligations to their fair values, with an offset to selling, general and administrative expenses, and paid $41.2 million to the sellers to settle these obligations in full and have no further obligations related to the 2020 contingent consideration obligations. In addition, during 2021, we assumed a contingent consideration obligation of $2.0 million when we acquired Neustar, and recorded a $14.8 million contingent consideration obligation related to a cost method investment we made in 2021, with no We have elected to account for our investment in a limited partnership that we purchased in 2021, which is not material, using the net asset value fair value practical expedient. Gains and losses on this investment, which are not material, are included in other income and expense in the consolidated statements of income.

Reportable Segments

Reportable Segments	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Reporting Segments	Reportable Segments We have three reportable segments, U.S. Markets, International, and Consumer Interactive, and the Corporate unit, which provides support services to each of the segments. Our chief operating decision maker (“CODM”) uses the profit measure of Adjusted EBITDA, on both a consolidated and a segment basis, to allocate resources and assess performance of our businesses. We use Adjusted EBITDA as our profit measure because it eliminates the impact of certain items that we do not consider indicative of operating performance, which is useful to compare operating results between periods. Our board of directors and executive management team also use Adjusted EBITDA as a compensation measure for both segment and corporate management under our incentive compensation plans. Adjusted EBITDA is also a measure frequently used by securities analysts, investors and other interested parties in their evaluation of the operating performance of companies similar to ours. We define Adjusted EBITDA as net income (loss) attributable to each segment plus (less) loss (income) from discontinued operations, plus net interest expense, plus (less) provision (benefit) for income taxes, plus depreciation and amortization, plus (less) certain acquisition-related deferred revenue adjustments, pl us stock-based compensation, plus mergers, acquisitions, divestitures and business optimization-related expens es including certain integration-related expenses, p lus certain accelerated technology investment expenses to migrate to the cloud, plus (less) certain other expenses (income). The segment financial information below aligns with how we report information to our CODM to assess operating performance and how we manage the business. The accounting policies of the segments are the same as described in Note 1, “Significant Accounting and Reporting Policies” and Note 15, “Revenue.” The following is a more detailed description of our reportable segments and the Corporate unit, which provides support services to each segment: U.S. Markets The U.S. Markets segment provides consumer reports, actionable insights and analytics to businesses. These businesses use our services to acquire customers, assess consumers’ ability to pay for services, identify cross-selling opportunities, measure and manage debt portfolio risk, collect debt, verify consumer identities and mitigate fraud risk. The core capabilities and delivery methods in our U.S. Markets segment allow us to serve a broad set of customers across industries. We report disaggregated revenue of our U.S. Markets segment for Financial Services and Emerging Verticals. • Financial Services: The Financial Services vertical, which accounts for 60.2% of our 2021 U.S. Markets revenue, consists of our consumer lending, mortgage, auto and cards and payments lines of business. Our Financial Services clients consist of most banks, credit unions, finance companies, auto lenders, mortgage lenders, FinTechs, and other consumer lenders in the United States. We also distribute our solutions through most major resellers, secondary market players and sales agents. Beyond traditional lenders, we work with a variety of credit arrangers, such as auto dealers and peer-to-peer lenders. We provide solutions across every aspect of the lending lifecycle; customer acquisition and engagement, fraud and ID management, retention and recovery. Our products are focused on mitigating risk and include credit reporting, credit marketing, analytics and consulting, identity verification and authentication and debt recovery solutions. • Emerging Verticals: Emerging Verticals include Insurance, Services and Collections, Tenant and Employment, Technology, Commerce & Communications, Public Sector, Media, and other emerging verticals we serve, as well as our Neustar business. Our solutions in these verticals are also data-driven and address the entire customer lifecycle. We offer onboarding and transaction processing products, scoring and analytic products, marketing solutions, fraud and identity management solutions and customer retention solutions. The results of operations of Neustar are included in Emerging Verticals in our consolidated statements of income since the date of the acquisition. International The International segment provides services similar to our U.S. Markets segment to businesses in select regions outside the United States. Depending on the maturity of the credit economy in each country, services may include credit reports, analytics and solutions services, and other value-added risk management services. In addition, we have insurance, business and automotive databases in select geographies. These services are offered to customers in a number of industries including financial services, insurance, automotive, collections, and communications, and are delivered through both direct and indirect channels. The International segment also provides consumer services similar to those offered by our Consumer Interactive segment that help consumers proactively manage their personal finances and take precautions against identity theft. We report disaggregated revenue of our International segment for the following regions: Canada, Latin America, the United Kingdom, Africa, India, and Asia Pacific. Consumer Interactive The Consumer Interactive segment provides solutions that help consumers manage their personal finances and take precautions against identity theft. Services in this segment include paid and free credit reports, scores and freezes, credit monitoring, identity protection and resolution, and financial management for consumers. The segment also provides solutions that help businesses respond to data breach events. Our products are provided through user-friendly online and mobile interfaces and are supported by educational content and customer support. Our Consumer Interactive segment serves consumers through both direct and indirect channels. The results of operations of Sontiq are included in the Consumer Interactive segment in our consolidated statements of income since the date of the acquisition. Corporate Corporate provides support services for each of the segments, holds investments, and conducts enterprise functions. Certain costs incurred in Corporate that are not directly attributable to one or more of the segments remain in Corporate. These costs are typically enterprise-level costs and are primarily administrative in nature. Selected segment financial information and disaggregated revenue consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Gross Revenue: U.S. Markets: Financial Services $ 1,078.9 $ 939.6 $ 849.0 Emerging Verticals 712.1 571.1 567.7 Total U.S. Markets 1,791.0 1,510.7 1,416.7 International: Canada 126.9 108.0 104.1 Latin America 103.2 86.5 104.2 United Kingdom 216.5 183.1 186.7 Africa 59.5 49.0 61.2 India 133.1 100.0 108.1 Asia Pacific 62.7 56.2 59.1 Total International 701.9 582.7 623.5 Total Consumer Interactive 545.8 513.1 497.8 Total revenue, gross $ 3,038.7 $ 2,606.5 $ 2,538.0 Intersegment revenue eliminations: U.S. Markets $ (70.5) $ (68.9) $ (68.7) International (5.9) (5.2) (5.1) Consumer Interactive (2.0) (1.7) (1.0) Total intersegment eliminations (78.4) (75.9) (74.8) Total revenue as reported $ 2,960.2 $ 2,530.6 $ 2,463.2 A reconciliation of Segment Adjusted EBITDA to income from continuing operations before income taxes for the periods presented is as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets Adjusted EBITDA $ 715.6 $ 593.9 $ 573.7 International Adjusted EBITDA 300.1 219.8 258.1 Consumer Interactive Adjusted EBITDA 263.1 247.6 248.4 Total $ 1,278.8 $ 1,061.2 $ 1,080.2 Adjustments to reconcile to income from continuing operations before income taxes: Corporate expenses (1) (121.9) (107.6) (114.3) Net interest expense (109.2) (120.6) (166.2) Depreciation and amortization (377.0) (346.8) (338.6) Acquisition-related revenue adjustments (2) — — (5.6) Stock-based compensation (3) (70.1) (45.9) (55.3) Mergers and acquisitions, divestitures and business optimization (4) (52.6) (8.5) (1.1) Accelerated technology investment (5) (42.3) (19.3) — Net other (6) (19.4) (35.5) (29.7) Net income attributable to non-controlling interests 15.0 12.4 5.1 Total adjustments $ (777.4) $ (671.8) $ (705.7) Income from continuing operations before income taxes $ 501.4 $ 389.5 $ 374.5 (1) Certain costs that are not directly attributable to one or more of the segments remain in Corporate. These costs are typically enterprise-level costs and are primarily administrative in nature. (2) This adjustment represents certain non-cash adjustments related to acquired entities, predominantly adjustments to increase revenue resulting from purchase accounting reductions to deferred revenue we record on the opening balance sheets of acquired entities. Beginning in the third quarter of 2019, we no longer have these adjustments to revenue. (3) Consisted of stock-based compensation and cash-settled stock-based compensation. (4) For the twelve months ended December 31, 2021, consisted of the following adjustments: $(48.1) million of acquisition expe nses; $(9.1) million of Neustar integration costs; $(8.4) million of adjustments to contingent consideration expense from previous acquisitions; a ($1.1) million gain reduction to notes receivable that were converted into equity upon acquisition and consolidation of an entity; a $12.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $1.1 million reimbursement for transition services related to divested businesses, net of separation expenses; and a $0.5 million gain on the sale of a Cost Method investment. For the twelve months ended December 31, 2020, consisted of the following adjustments: $(7.5) million of Callcredit integration costs; $(7.0) million of acquisition expenses; a $(4.8) million loss on the impairment of a Cost Method investment; $(1.7) million of adjustments to contingent consideration expense from previous acquisitions; an $8.1 million remeasurement gain on notes receivable that were converted into equity upon acquisition and consolidation of an entity; a $2.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $1.8 million gain on the disposal of assets of a small business in our United Kingdom region; and a $0.1 million reimbursement for transition services provided to the buyers of certain of our discontinued operations. For the twelve months ended December 31, 2019, consisted of the following adjustments: a $31.2 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $0.5 million reimbursement for transition services provided to the buyers of certain of our discontinued operations; $(15.8) million of Callcredit integration costs; a $(10.0) million loss on the impairment of certain Cost Method investments; a $(3.7) million loss on assets of a small business in our United Kingdom region that are classified as held-for-sale; $(2.4) million of acquisition expenses; and a $(0.8) million adjustment to contingent consideration expense from previous acquisitions. (5) Represents expenses associated with our accelerated technology investment to migrate to the cloud. (6) For the twelve months ended December 31, 2021, consisted of the following adjustme nts: ($17.9) million of deferred loan fees written off as a result of the prepayments on our debt; ($1.2) million in certain legal and regulat ory expenses; a $3.5 million recovery from the Fraud Incident, net of additional administrative expense; and a ($3.7) million net loss from currency remeasurement of our foreign operations, loan fees and other. For the twelve months ended December 31, 2020, consisted of the following adjustments: $(34.7) million for certain legal expenses; $(0.9) million of deferred loan fees written off as a result of the prepayments on our debt; a $1.5 million recovery from the Fraud Incident, net of additional administrative expense; and a $(1.4) million net loss from currency remeasurement of our foreign operations, loan fees and other. For the twelve months ended December 31, 2019, consisted of the following adjustments: $(13.5) million of expenses associated with the Fraud Incident, net of the portion that is attributable to the non-controlling interest; $(13.0) million of fees related to the refinancing of senior secured credit facility; $(2.0) million of deferred loan fees written off as a result of the prepayments on our debt; and $(1.3) million loss from currency remeasurement, loan fees, reduction to expenses for certain legal and regulatory matters and other. Earnings from equity method investments included in non-operating income and expense was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 2.4 $ 2.6 $ 2.6 International 9.6 6.4 10.6 Total $ 12.0 $ 8.9 $ 13.2 Total assets, by segment, consisted of the following: (in millions) December 31, 2021 December 31, 2020 U.S. Markets $ 6,934.8 $ 3,182.5 International 2,921.2 2,974.5 Consumer Interactive 1,222.3 458.9 Total segment assets $ 11,078.2 $ 6,615.9 Corporate 1,556.8 267.5 Discontinued operations — 428.1 Total assets $ 12,635.0 $ 7,311.6 Cash paid for capital expenditures, by segment, was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 145.3 $ 119.1 $ 112.1 International 65.1 68.2 59.8 Consumer Interactive 11.8 12.8 13.4 Corporate 2.0 5.5 3.2 Total $ 224.2 $ 205.6 $ 188.4 Depreciation and amortization expense by segment was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 222.0 $ 205.8 $ 201.4 International 132.4 120.6 118.6 Consumer Interactive 16.8 14.6 13.3 Corporate 5.7 5.7 5.2 Total $ 377.0 $ 346.8 $ 338.6 Percentage of revenue based on where it was earned, was as follows: Twelve Months Ended December 31, 2021 2020 2019 Domestic 76 % 77 % 75 % International 24 % 23 % 25 % Percentage of long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset, was as follows: As of December 31, 2021 2020 2019 Domestic 76 % 59 % 59 % International 24 % 41 % 41 %

Commitments

Commitments	12 Months Ended
	Dec. 31, 2021
Commitments [Abstract]
Commitments	Commitments Future minimum payments for noncancelable operating leases, purchase obligations and other liabilities in effect as of December 31, 2021, are payable as follows: (in millions) Operating Purchase Total 2022 $ 42.4 $ 141.1 $ 183.5 2023 35.8 93.3 129.1 2024 24.1 55.9 80.0 2025 16.7 43.2 59.9 2026 13.3 0.8 14.1 Thereafter 46.8 0.3 47.1 Totals $ 179.1 $ 334.6 $ 513.7 Purchase obligations and other excludes trade accounts payable that are included in our balance sheet as of December 31, 2021. Purchase obligations and other include commitments for outsourcing services, royalties, data licenses, and maintenance and other operating expenses. Licensing agreements We have agreements with Fair Isaac Corporation to license credit-scoring algorithms and the right to sell credit scores derived from those algorithms. Payment obligations under these agreements vary due to factors such as the volume of credit scores we sell, what type of credit scores we sell, and how our customers use the credit scores. There are no minimum payments required under these licensing agreements. However, we do have a significant level of sales volume related to these credit scores.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2021
Loss Contingency [Abstract]
Contingencies	Contingencies Legal and Regulatory Matters We are routinely named as defendants in, or parties to, various legal actions and proceedings relating to our current or past business operations. These actions generally assert claims for violations of federal or state credit reporting, consumer protection or privacy laws, or common law claims related to the unfair treatment of consumers, and may include claims for substantial or indeterminate compensatory or punitive damages, or injunctive relief, and may seek business practice changes. We believe that most of these claims are either without merit or we have valid defenses to the claims, and we vigorously defend these matters or seek non-monetary or small monetary settlements, if possible. However, due to the uncertainties inherent in litigation, we cannot predict the outcome of each claim in each instance. In the ordinary course of business, we also are subject to governmental and regulatory examinations, information-gathering requests, investigations and proceedings (both formal and informal), certain of which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. In connection with formal and informal inquiries by these regulators, we routinely receive requests, subpoenas and orders seeking documents, testimony, and other information in connection with various aspects of our activities. In view of the inherent unpredictability of legal and regulatory matters, particularly where the damages sought are substantial or indeterminate or when the proceedings or investigations are in the early stages, we cannot determine with any degree of certainty the timing or ultimate resolution of legal and regulatory matters or the eventual loss, fines, penalties or, if any, that may result. We establish reserves for legal and regulatory matters when those matters present loss contingencies that are both probable and can be reasonably estimated. However, for certain of the matters, we are not able to reasonably estimate our exposure because damages have not been specified and (i) the proceedings are in early stages, (ii) there is uncertainty as to the likelihood of a class being certified or the ultimate size of the class, (iii) there is uncertainty as to the outcome of similar matters pending against our competitors, (iv) there are significant factual issues to be resolved, and/or (v) there are legal issues of a first impression being presented. The actual costs of resolving legal and regulatory matters, however, may be substantially higher than the amounts reserved for those matters, and an adverse outcome in certain of these matters could have a material adverse effect on our consolidated financial statements in particular quarterly or annual periods. We accrue amounts for certain legal and regulatory matters for which losses were considered to be probable of occurring based on our best estimate of the most likely outcome. It is reasonably possible actual losses could be significantly different from our current estimates. In addition, there are some matters for which it is reasonably possible that a loss will occur, however we cannot estimate a range of the potential losses for these matters. Legal fees incurred in connection with ongoing litigation are considered a period cost and are expensed as incurred. To reduce our exposure to an unexpected significant monetary award resulting from an adverse judicial decision, we maintain insurance that we believe is appropriate and adequate based on our historical experience. We regularly advise our insurance carriers of the claims (threatened or pending) against us in the course of litigation and generally receive a reservation of rights letter from the carriers when such claims exceed applicable deductibles. We are not aware of any significant monetary claim that has been asserted against us in the course of pending litigation that would not have some level of coverage by insurance after the relevant deductible, if any, is met. As of December 31, 2021 and 2020, we accrued $85.6 million and $76.0 million, respectively, for anticipated claims. These amounts were recorded in other accrued liabilities in the consolidated balance sheets and the associated expenses were recorded in selling, general and administrative expenses in the consolidated statements of income. Legal fees incurred in connection with ongoing litigation are considered period costs and are expensed as incurred. Ramirez v. Trans Union LLC In Ramirez v. Trans Union LLC (“Ramirez” or the “Ramirez Litigation”) filed in 2012, the plaintiff alleged that the OFAC Alert service did not comply with the Cortez ruling and that we willfully violated the Fair Credit Reporting Act (“FCRA”) by continuing to offer the OFAC Alert service. The plaintiff also alleged that there are one or more classes of individuals who should be entitled to statutory damages based on the allegedly willful violations. In July 2014, the trial Court in Ramirez certified a class of 8,185 individuals solely for purposes of statutory damages if TransUnion was ultimately found to have willfully violated the FCRA. On June 21, 2017, the jury in Ramirez returned a verdict in favor of a class of 8,185 individuals and awarded punitive and statutory damages totaling approximately $60 million. In November 2017, the trial court denied our post-trial motions for judgment as a matter of law, a new trial and a reduction on the jury verdict. We appealed the Ramirez ruling to the United States Court of Appeals for the Ninth Circuit and on February 27, 2020, the Ninth Circuit affirmed in part and reversed and vacated in part the trial court’s judgment, holding that the punitive damages award was excessive in violation of constitutional due process. On April 8, 2020, the Ninth Circuit denied our petition for rehearing en banc, and on September 2, 2020, we filed a Petition for Certiorari with the United States Supreme Court. On December 16, 2020, the United States Supreme Court granted the Petition for Certiorari with respect to whether Article III of the United States Constitution or Rule 23 of the Federal Rules of Civil Procedure permit a damages class action where the vast majority of the class suffered no actual injury, let alone an injury anything like what the class representative suffered. On June 25, 2021, the United States Supreme Court’s decision reversed the Ninth Circuit opinion, and remanded the matter back to the lower courts for further proceedings consistent with its opinion. The United States Supreme Court’s opinion held that only plaintiffs who have suffered a concrete harm by a defendant’s statutory violation have Article III standing to seek damages against defendants in Federal court. Based on the ruling, only approximately 23% of the class was determined to have suffered concrete harm. On January 24, 2022, we reached a tentative class settlement with the plaintiffs, which will require court approval. We expect this matter to be resolved by the end of 2022. Accordingly, in 2021, we revised the amount of the probable loss that we previously estimated, resulting in a reduction of our estimated liability and partially offsetting insurance receivable, and a corresponding net reduction recorded in selling, general and administrative expense for the year end December 31, 2021. CFPB Matter In June 2021, we received a Notice and Opportunity to Respond and Advise (“NORA”) letter from the Consumer Financial Protection Bureau (“CFPB”), informing us that the CFPB’s Enforcement Division is considering whether to recommend that the CFPB take legal action against us and certain of our executive officers. The NORA letter alleged that we failed to comply with and timely implement a Consent Order issued by the CFPB in January 2017, and further alleged additional violations related to Consumer Interactive’s marketing practices. On September 27, 2021, the Enforcement Division advised us that it had obtained authority to pursue an enforcement action. We are currently engaged in active settlement discussions with the CFPB regarding this matter. If our ongoing discussions do not result in a negotiated resolution, we expect that the CFPB will pursue litigation against the Company and these executive officers, seeking restitution, civil money penalties, and injunctive relief. We continue to believe that our marketing practices are lawful and appropriate, and would vigorously defend against allegations to the contrary in such proceedings. We cannot provide assurance that the CFPB will not ultimately commence litigation against us in this matter, nor are we able to predict the likely outcome of this mat ter. As of December 31, 2021, we have an accrued liability of $26.5 million in connection with this matter and there is a reasonable possibility that a loss in excess of the amount accrued may be incurred, and such an outcome could have a material adverse effect on our results of operations and financial condition. However, any possible loss or range of loss in excess of the amount accrued is not reasonably estimable at this time.

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2021
Quarterly Financial Data [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) The quarterly financial data for 2021 and 2020 consisted of the following: Three Months Ended (in millions) December 31, 2021 (1) September 30, 2021 (2) June 30, 2021 (3) March 31, Revenue $ 789.8 $ 743.4 $ 728.2 $ 698.9 Operating income 114.0 169.7 200.4 163.6 Income from continuing operations 34.4 96.7 122.1 117.3 Net income 1,020.5 118.2 132.9 130.6 Net income attributable to TransUnion 1,017.4 114.2 127.6 127.9 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.16 $ 0.48 $ 0.61 $ 0.60 Net Income attributable to TransUnion $ 5.31 $ 0.60 $ 0.67 $ 0.67 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.16 $ 0.48 $ 0.61 $ 0.60 Net Income attributable to TransUnion $ 5.27 $ 0.59 $ 0.66 $ 0.66 Three Months Ended (in millions) December 31, 2020 (4) September 30, 2020 (4) June 30, 2020 (4) ` March 31, 2020 (4,5) Revenue $ 653.3 $ 650.5 $ 587.1 $ 639.6 Operating income 128.8 144.9 106.0 120.6 Income from continuing operations 92.5 92.3 58.2 62.8 Net income 104.5 106.7 70.0 74.3 Net income attributable to TransUnion 101.7 102.8 68.5 70.2 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.47 $ 0.46 $ 0.30 $ 0.31 Net Income attributable to TransUnion $ 0.53 $ 0.54 $ 0.36 $ 0.37 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.47 $ 0.46 $ 0.30 $ 0.31 Net Income attributable to TransUnion $ 0.53 $ 0.53 $ 0.36 $ 0.37 1 Net income and net income attributable to TransUnion includes a gain on the disposal of our Healthcare business of $982.5 million. Inc ome from cont inuing operations, net income, and net income attributable to TransUnion include $27.7 million for acquisition expenses, $17.4 million for deferred fees write-off, and $9.1 million for integration costs, partially offset by a $12.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issue. Operating income, income from co ntinuing operations, net income, and net income attributable to Trans Union include $21.6 million for certain legal expenses. 2 Net income and net income attributable to TransUnion includes a $12.9 million gain on the sale of a Cost Method investment of our discontinued operations. Income from continuing operations, net income, and net income attributable to TransUnion include $18.3 million for acquisition expenses. Operating income, income from continuing operations, net income, and net income attributable to TransUnion include $12.0 million for certain legal expenses. 3 Operating income, income from continuing operations, net income, and net income attributable to TransUnion include a $32.4 million net reduction in certain legal expenses. 4 For 2020, beginning in mid-March 2020, the COVID-19 pandemic, widespread measures implemented to contain its effects, and business and consumer responses to such measures, had a material and adverse impact on numerous aspects of our business, including customer demand for our services and solutions in all of our segments. 5 Operating income, income from continuing operations, net income, and net income attributable to TransUnion all include $30.5 million for certain legal expenses.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Loss The following table sets forth the changes in each component of accumulated other comprehensive loss, net of tax: (in millions) Foreign Currency Net Unrealized Net Unrealized Accumulated Other Balance, December 31, 2018 $ (279.6) $ (3.3) $ 0.2 $ (282.7) Change 65.0 (33.9) — 31.1 Balance, December 31, 2019 $ (214.6) $ (37.2) $ 0.2 $ (251.6) Change 9.2 (29.9) 0.2 (20.5) Balance, December 31, 2020 $ (205.4) $ (67.1) $ 0.4 $ (272.1) Change (63.8) 50.5 — (13.3) Balance, December 31, 2021 $ (269.2) $ (16.6) $ 0.4 $ (285.4)

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On January 31, 2021, we prepaid $400 million of our Senior Secured Term Loans, funded from our cash on hand. As a result of the prepayment, we expect to expense $1.0 million and $5.5 million, respectively, of the unamortized original issue discount and deferred fees to other income and expense in the consolidated statement of income in the first quarter of 2022. On February 22, 2022, we announced our agreement to acquire Verisk Financial Services, including Argus Information and Advisory Services, Inc., for $515 million in cash, subject to certain customary purchase price adjustments. We intend to fund the acquisition through cash on hand. We expect the acquisition to close in the second quarter of 2022, subject to the satisfaction of customary closing conditions and regulatory approvals.

Condensed Financial Information

Condensed Financial Information of TransUnion	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information of TransUnion	Schedule I—Condensed Financial Information of TransUnion TRANSUNION Parent Company Only Balance Sheet (in millions, except per share data) December 31, December 31, Assets Current assets: Other current assets $ 0.4 $ 0.3 Total current assets 0.4 0.3 Investment in TransUnion Intermediate 4,217.6 2,748.7 Other assets 6.1 6.3 Total assets $ 4,224.1 $ 2,755.3 Liabilities and stockholders’ equity Current liabilities: Trade accounts payable $ 0.3 $ — Due to TransUnion Intermediate 312.0 211.4 Other current liabilities 1.3 1.4 Total current liabilities 313.6 212.8 Other liabilities 2.4 2.3 Total liabilities 316.0 215.1 Stockholders’ equity: Common stock, $0.01 par value; 1.0 billion shares authorized at December 31, 2021 and December 31, 2020; 197.4 million and 195.7 million shares issued as of December 31, 2021 and December 31, 2020, respectively; and 191.8 million and 190.5 million shares outstanding as of December 31, 2021 and December 31, 2020, respectively 2.0 2.0 Additional paid-in capital 2,188.9 2,088.1 Treasury stock at cost; 5.6 million and 5.2 million shares at December 31, 2021 and December 31, 2020, respectively (252.0) (215.2) Retained earnings 2,254.6 937.4 Accumulated other comprehensive loss (285.4) (272.1) Total stockholders’ equity 3,908.1 2,540.2 Total liabilities and stockholders’ equity $ 4,224.1 $ 2,755.3 See accompanying notes to condensed financial statements. Schedule I —Condensed Financial Information of TransUnion TRANSUNION Parent Company Only Statement of Income (in millions) Twelve Months Ended December 31, 2021 2020 2019 Revenue $ — $ — $ — Operating expenses Selling, general and administrative 3.5 3.1 3.5 Total operating expenses 3.5 3.1 3.5 Operating loss (3.5) (3.1) (3.5) Non-operating income and expense Equity Income from TransUnion Intermediate 1,388.6 345.0 349.2 Other income and (expense), net — 0.2 — Total non-operating income and expense 1,388.6 345.2 349.2 Income from continuing operations before income taxes 1,385.1 342.1 345.7 Benefit for income taxes 2.0 1.1 1.2 Net income $ 1,387.1 $ 343.2 $ 346.9 See accompanying notes to condensed financial statements. Schedule I —Condensed Financial Information of TransUnion TRANSUNION Parent Company Only Statements of Comprehensive Income (in millions) Twelve Months Ended December 31, 2021 2020 2019 Net income $ 1,387.1 $ 343.2 $ 346.9 Other comprehensive income: Foreign currency translation: Foreign currency translation adjustment (64.1) 8.4 65.5 Benefit (expense) for income taxes 0.3 0.8 (0.5) Foreign currency translation, net (63.8) 9.2 65.0 Hedge instruments: Net change on interest rate cap — 4.1 (11.0) Net change on interest rate swap 67.3 (43.5) (35.4) Cumulative effect of adopting ASU 2017-12 — — 1.0 Benefit (expense) for income taxes (16.8) 9.5 11.5 Hedge instruments, net 50.5 (29.9) (33.9) Available-for-sale securities: Net unrealized gain — 0.3 — Expense for income taxes — (0.1) — Available-for-sale securities, net — 0.2 — Total other comprehensive (loss) income, net of tax (13.3) (20.5) 31.1 Comprehensive income attributable to TransUnion $ 1,373.8 $ 322.7 $ 378.0 See accompanying notes to condensed financial statements. Schedule I —Condensed Financial Information of TransUnion TRANSUNION Parent Company Only Statement of Cash Flows (in millions) Twelve Months Ended December 31, 2021 2020 2019 Cash provided by operating activities $ 84.7 $ 70.8 $ 71.7 Cash used in investing activities — — — Cash flows from financing activities: Proceeds from issuance of common stock and exercise of stock options 21.9 22.9 24.4 Dividends to shareholders (69.8) (57.6) (56.8) Treasury stock purchased (36.8) (36.1) (39.3) Cash used in financing activities (84.7) (70.8) (71.7) Net change in cash and cash equivalents — — — Cash and cash equivalents, beginning of period — — — Cash and cash equivalents, end of period $ — $ — $ — See accompanying notes to condensed financial statements. Schedule I —Condensed Financial Information of TransUnion TRANSUNION Parent Company Only Notes to Financial Statements

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	Schedule II—Valuation and Qualifying Accounts TRANSUNION (in millions) Balance at Charged to Charged to Deductions Balance at Allowance for deferred tax assets: Year ended December 31, 2021 $ 65.7 $ 3.8 $ 14.4 $ (13.1) $ 70.8 2020 $ 53.3 $ 12.6 $ 3.7 $ (3.8) $ 65.7 2019 $ 51.9 $ 14.1 $ — $ (12.7) $ 53.3

Significant Accounting and Re_2

Significant Accounting and Reporting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements of TransUnion and subsidiaries have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). Our consolidated financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair presentation of the periods presented. All significant intercompany transactions and balances have been eliminated. As a result of displaying amounts in millions, rounding differences may exist in the financial statements and footnote tables. Certain prior period presentations, including our discontinued Healthcare operations as further discussed in Note 3, “Discontinued Operations,” have been recast to conform to current year presentations. Unless the context indicates otherwise, any reference in this report to the “Company,” “we,” “our,” “us,” and “its” refers to TransUnion and its consolidated subsidiaries, collectively. For the periods presented, TransUnion does not have any material assets, liabilities, revenues, expenses or operations of any kind other than its ownership investment in TransUnion Intermediate Holdings. Inc.
Principles of consolidation	Principles of Consolidation The consolidated financial statements of TransUnion include the accounts of TransUnion and all of its controlled subsidiaries. Investments in nonmarketable unconsolidated entities in which the Company is able to exercise significant influence are accounted for using the equity method. Investments in nonmarketable unconsolidated entities in which the Company is not able to exercise significant influence, our “Cost Method Investments,” are accounted for at our initial cost, minus any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements and related disclosures in accordance with GAAP requires management to make estimates and judgments that affect the amounts reported. We believe that the estimates used in preparation of the a ccompanying consolidated financial statements are reasonable, based upon information available to management at this time. These estimates and judgments affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the balance sheet date, as well as the amounts of revenue and expense during the reporting period. Estimates are inherently uncertain and actual results could differ materially from the estimated amounts.
COVID-19 Accounting Policy	Impact of COVID-19 on Our Financial Statements During 2020, the economic effect of the COVID-19 pandemic had a material and adverse impact on numerous aspects of our business, including customer demand for our services and solutions in all of our segments. During 2021, we saw ongoing improvements in our results of operations in all the markets where we operate. However, given ongoing uncertainty and the unpredictable nature of the pandemic, including the rise of variants of the virus and the effectiveness of vaccines against those variants, COVID-19 may have a material and adverse impact on various aspects of our business in the future, including our consolidated financial statements.
Segments	Segments Operating segments are businesses for which separate financial information is available and evaluated regularly by our chief operating decision maker (“CODM”) deciding how to allocate resources and assess performance. We have three operating and reportable segments; U.S. Markets, International and Consumer Interactive. We also report expenses for Corporate, which provides support services to each segment. Details of our segment results are discussed in Note 20, “Reportable Segments.”
Revenue from Contract with Customer	Revenue Recognition and Deferred Revenue All of our revenue is derived from contracts with our customers and is reported as revenue in the Consolidated Statements of Income generally as or at the point in time our performance obligations are satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to a customer. We have contracts with two general groups of performance obligations; those that require us to stand ready to provide goods and services to a customer to use as and when requested (“Stand Ready Performance Obligations”) and those that do not require us to stand ready (“Other Performance Obligations”). Our Stand Ready Performance Obligations include obligations to stand ready to provide data, process transactions, access our databases, software-as-a-service and direct-to-consumer products, rights to use our intellectual property and other services. Our Other Performance Obligations include the sale of certain batch data sets and various professional and other services. Deferred revenue generally consists of amounts billed in excess of revenue recognized for the sale of data services, subscriptions and set up fees. As our contracts with customers generally have a duration of one year or less, our contract liabilities consist of deferred revenue that is primarily short-term in nature. The current and long-term portions of deferred revenue are included in other current liabilities and other liabilities. See Note 15, “Revenue,” for a further discussion about our revenue recognition policies.
Costs of Services	Costs of ServicesCosts of services include data acquisition and royalty fees, personnel costs related to our databases and software applications, consumer and call center support costs, hardware and software maintenance costs, telecommunication expenses and occupancy costs associated with the facilities where these functions are performed.
Selling, General and Administrative Expenses	Selling, General and Administrative ExpensesSelling, general and administrative expenses include personnel-related costs for sales, administrative and management employees, costs for professional and consulting services, advertising and occupancy and facilities expense of these functions. Advertising costs, are expensed as incurred. Advertising costs, which include commissions we pay to our partners to promote our products online, for the years ended December 31, 2021, 2020 and 2019 were $92.9 million, $89.8 million and $83.3 million, respectively.
Stock-Based Compensation	Stock-Based Compensation Compensation expense for all stock-based compensation awards is determined using the grant date fair value. For all equity-based plan, we record the impact of forfeitures when they happen. Expense is recognized on a straight-line basis over the requisite service period of the award, which is generally equal to the vesting period. The details of our stock-based compensation program are discussed in Note 18, “Stock-Based Compensation.”
Income Taxes	Income Taxes Deferred income tax assets and liabilities are determined based on the estimated future tax effects of temporary differences between the financial statement and tax basis of assets and liabilities, as measured by current enacted tax rates. The effect of a tax rate change on deferred tax assets and liabilities is recognized in operations in the period that includes the enactment date of the change. We periodically assess the recoverability of our deferred tax assets, and a valuation allowance is recorded against deferred tax assets if it is more likely than not that some portion of the deferred tax assets will not be realized. See Note 17, “Income Taxes,” for additional information.
Foreign Currency Translation	Foreign Currency Translation The functional currency for each of our foreign subsidiaries is generally that subsidiary’s local currency. We translate the assets and liabilities of foreign subsidiaries at the year-end exchange rate, and translate revenues and expenses at the monthly average rates during the year. We record the resulting translation adjustment as a component of other comprehensive income in stockholders’ equity.
Cash and Cash Equivalents	Cash and Cash EquivalentsWe consider investments in highly liquid debt instruments with original maturities of three months or less to be cash equivalents. The carrying value of our cash and cash equivalents approximate their fair value.
Trade Accounts Receivable	Trade Accounts Receivable We base our allowance for doubtful accounts estimate on our historical loss experience, our current expectations of future losses, current economic conditions, an analysis of the aging of outstanding receivables and customer payment patterns, and specific reserves for customers in adverse financial condition or for existing contractual disputes. The following is a rollforward of the allowance for doubtful accounts for the periods presented: Twelve months ended December 31, 2021 2020 2019 Beginning Balance $ 17.1 $ 13.4 $ 10.5 Provision for losses on trade accounts receivable (2.6) 9.8 8.3 Write-offs, net of recovered accounts (3.8) (6.1) (5.4) Ending balance $ 10.7 $ 17.1 $ 13.4
Long-Lived Assets	Long-Lived Assets Property, Plant, Equipment and Intangibles Property, plant and equipment is depreciated primarily using the straight-line method, over the estimated useful lives of the assets. Buildings and building improvements are generally depreciated over 20 years. Computer equipment and purchased software are depreciated over 3 to 7 years. Leasehold improvements are depreciated over the shorter of the estimated useful life of the asset or the lease term. Other assets are depreciated over 5 to 7 years. Intangibles, other than indefinite-lived intangibles, are amortized using the straight-line method, which approximates the pattern of usage, over their economic life, generally 3 to 40 years. Assets to be disposed of, if any, are separately presented in the consolidated balance sheet and reported at the lower of the carrying amount or fair value, less costs to sell, and are no longer depreciated. See Note 5, “Property, Plant and Equipment,” and Note 7, “Intangible Assets,” for additional information about these assets. Internal Use Software We monitor the activities of each of our internal use software and system development projects and analyze the associated costs, making an appropriate distinction between costs to be expensed and costs to be capitalized. Costs incurred during the preliminary project stage are expensed as incurred. Many of the costs incurred during the application development stage are capitalized, including costs of software design and configuration, development of interfaces, coding, testing and installation of the software. Once the software is ready for its intended use, it is amortized on a straight-line basis over its useful life, generally 3 to 10 years. Impairment of Long-Lived Assets We review long-lived asset groups that are subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Recoverability of asset groups to be held and used is measured by a comparison of the carrying amount of an asset group to the estimated undiscounted future cash flows expected to be generated by the asset group. If the carrying amount of an asset group exceeds its estimated future cash flows, an impairment charge is recognized equal to the amount by which the carrying amount of the asset group exceeds the fair value of the asset group. There were no significant impairment charges recorded during 2021, 2020 and 2019.
Marketable Securities	Marketable Securities We classify our investments in debt and equity securities in accordance with our intent and ability to hold the investments. Held-to-maturity securities are carried at amortized cost, which approximates fair value, and are classified as either short-term or long-term investments based on the contractual maturity date. Earnings from these securities are reported as a component of interest income. Available-for-sale securities if any, are carried at fair market value, with the unrealized gains and losses, net of tax, included in accumulated other comprehensive income. At December 31, 2021 and 2020, the Company’s marketable securities consisted of available-for-sale securities. The available-for-sale securities relate to foreign exchange-traded corporate bonds. There were no significant realized or unrealized gains or losses for these securities for any of the periods presented. We follow fair value guidance to measure the fair value of our financial assets as further described in Note 19, “Fair Value”.
Goodwill and Other Indefinite-Lived Intangibles	Goodwill Goodwill is allocated to our reporting units, which are an operating segment or one level below an operating segment. We have no indefinite-lived intangible assets other than goodwill. We conduct an impairment test in the fourth quarter of each year, or more frequently if even ts or circumstances indicate that the carrying value of goodwill may be impaired. We have the option to first perform a qualitative analysis to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying value. If the qualitative analysis indicates that an impairment is more likely than not for a reporting unit, we perform a quantitative impairment analysis for that reporting unit. We have the option to bypass the qualitative analysis for any reporting unit and proceed directly to performing a quantitative analysis. When we perform a quantitative impairment analysis, we use a combination of an income approach, using the discounted cash flow method, and a market approach, using the guideline public company method, to determine the fair value of each reporting unit. For each reporting unit, we compare the fair value to its carrying value including goodwill. If the fair value of the reporting unit is less than its carrying value, we record an impairment charge based on that difference, up to the amount of goodwill recorded in that reporting unit. The quantitative impairment analysis requires the application of a number of significant assumptions, including estimates of future revenue growth rates, EBITDA margins, discount rates, and market multiples. The projected future revenue and EBITDA margins, and the resulting projected cash flows of each reporting unit, is based on internal operating plans reviewed by management, extrapolated over the forecast period. The discount rate for each reporting unit is based on the weighted average cost of capital for the reporting unit. Market multiples are based on the Guideline Public Company Method using comparable publicly traded company multiples of earnings before interest, taxes, and depreciation and amortization for a group of benchmark companies. See Note 6, “Goodwill,” for additional information about our 2021 impairment analysis.
Benefit Plans	Benefit Plans We maintain a 401(k) defined-contribution profit sharing plan for eligible employees. We provide a partial matching contribution and a discretionary contribution based on a fixed percentage of a participant’s eligible compensation. Contributions to this plan for the years ended December 31, 2021, 2020 and 2019 were $34.5 million, $27.2 million and $29.6 million, respectively.
Recently adopted accounting pronouncements	Recently Adopted Accounting Pronouncements On December 18, 2019, the FASB issued Accounting Standards Update (“ASU”) 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU removes specific exceptions to the general principles in Topic 740. Among other things, it eliminates the need for organizations to analyze whether the following apply in a given period: an exception to the incremental approach for intra-period tax allocation; exceptions to accounting for basis differences when there are ownership changes in foreign investments; and an exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. This ASU also improves financial statement preparers’ application of income tax-related guidance and simplifies GAAP for: franchise taxes that are partially based on income; transactions with a government that result in a step up in the tax basis of goodwill; separate financial statements of legal entities that are not subject to tax; and enacted changes in tax laws in interim periods. This guidance is effective for annual reporting periods beginning after December 15, 2020, including interim periods therein. Upon adoption, this guidance did not have a material impact on our consolidated financial statements. On January 16, 2020, the FASB issued ASU 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)-Clarifying the Interactions between Topic 321, Topic 323, and Topic 815. This ASU, among other things, clarifies that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments-Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. This amendment also clarifies that, when determining the accounting for certain forward contracts and purchased options a company should not consider, whether upon settlement or exercise, if the underlying securities would be accounted for under the equity method or fair value option. This guidance is effective for annual reporting periods beginning after December 15, 2020, including interim periods therein. Upon adoption, this guidance had no impact our consolidated financial statements as we had no such transactions at the time of adoption. On October 28, 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. This ASU will require acquiring entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. Previously, acquiring entities generally were required to recognize such items at fair value on the acquisition date. This guidance is effective for annual reporting periods beginning after December 15, 2022, including interim periods therein, with early adoption permitted. We elected to early adopt this guidance on December 1, 2021, and have accounted for contract assets and liabilities for our 2021 acquisitions in accordance with this updated guidance.
Recent Accounting Pronouncement not yet Adopted	Recent Accounting Pronouncements Not Yet Adopted There are no pending recent accounting pronouncements that apply to TransUnion that have not been adopted.

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Accounts Receivable, Allowance for Credit Loss	The following is a rollforward of the allowance for doubtful accounts for the periods presented: Twelve months ended December 31, 2021 2020 2019 Beginning Balance $ 17.1 $ 13.4 $ 10.5 Provision for losses on trade accounts receivable (2.6) 9.8 8.3 Write-offs, net of recovered accounts (3.8) (6.1) (5.4) Ending balance $ 10.7 $ 17.1 $ 13.4

Business Acquisitions (Tables)

Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The table below summarizes the preliminary allocation of fair value of assets acquired and liabilities assumed as of December 1, 2021: December 1, 2021 (in millions) Neustar Sontiq Total Purchase price: $ 3,106.6 $ 642.8 $ 3,749.4 Assets acquired: Cash and cash equivalents $ 122.7 $ 17.8 $ 140.4 Trade accounts receivable 118.7 10.4 129.1 Other current assets 24.9 1.4 26.3 Right of use lease assets 83.2 2.4 85.6 Property, plant and equipment 42.5 5.2 47.7 Identifiable intangible assets 1,513.0 237.2 1,750.2 Goodwill 1 1,900.3 445.8 2,346.0 Other assets 5.4 0.2 5.6 Total assets acquired $ 3,810.7 $ 720.3 $ 4,531.0 Liabilities assumed: Accounts payable $ 29.1 $ 7.0 $ 36.1 Other current liabilities 157.6 4.7 162.3 Deferred revenue 49.3 19.1 68.5 Operating lease liabilities 88.3 2.4 90.7 Other liabilities 14.7 0.1 14.8 Deferred tax liabilities 365.1 44.2 409.3 Total liabilities assumed $ 704.1 $ 77.5 $ 781.6 Net assets acquired: $ 3,106.6 $ 642.8 $ 3,749.4 (1) For tax purposes, we estimate that $326.6 million of the goodwill, which originated from previous acquisitions of Neustar and Sontiq, is tax deductible.
Schedule of Business Acquisitions, by Acquisition	The following table sets forth the components of identifiable intangible assets acquired and the weighted average amortization period as of the acquisition date: December 1, 2021 Neustar Sontiq (dollars in millions) Fair Value Weighted-Average Amortization Period Fair Value Weighted-Average Amortization Period Customer relationships $ 1,183.0 18 years $ 184.1 17 years Technology and software 320.0 10 years 49.3 10 years Trade names and trademarks 10.0 1 year 1.5 1 year Non-compete agreements — — 2.3 2 years Total identifiable intangible assets $ 1,513.0 16 years $ 237.2 15 years
Business Acquisition, Pro Forma Information	(Unaudited) TransUnion and Neustar combined For the Year Ended (in millions) December 31, December 31, Pro-forma revenue $ 3,493.2 $ 3,064.5 Pro-forma net income from continuing operations attributable to TransUnion $ 247.6 $ 72.9

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table presents financial results of TransUnion Healthcare business for each respective period. Twelve Months Ended December 31, (in millions) 2021 (1) 2020 2019 (2) Revenue $ 184.8 $ 185.9 $ 192.9 Operating expenses Cost of services (exclusive of depreciation and amortization below) 65.6 66.5 68.6 Selling, general and administrative 39.1 30.6 34.7 Depreciation and amortization 16.5 21.1 23.5 Total operating expenses 121.2 118.2 126.8 Operating income of discontinued operations 63.6 67.7 66.1 Non-operating income and (expense) 1.9 (1.4) (0.1) Income before income taxes from discontinued operations 65.5 66.3 66.0 Provision for income taxes (16.3) (16.5) (13.4) Gain on sale of discontinued operations, net of tax 982.5 — — Income from discontinued operations, net of tax $ 1,031.7 $ 49.8 $ 52.6 (1) The 2021 results are through December 16, 2021. (2) The 2019 column in the table above does not include the activity of discontinued operations of our UK business that was not material. We disposed of that business in 2019. The following table presents the carrying amounts of the major classes of assets and liabilities of discontinued operations of TransUnion Healthcare business at each respective date: (in millions) December 31, 2021 (1) December 31, Assets: Trade accounts receivable $ — $ 60.9 Other current assets — 3.9 Goodwill — 235.0 Other intangible assets — 111.5 Other non-current assets — 16.8 Total assets of discontinued operations $ — $ 428.1 Liabilities: Current liabilities $ — $ 15.4 Non-current liabilities — 5.3 Total liabilities of discontinued operations $ — $ 20.7 (1) The sale of the Healthcare business closed on December 17, 2021. As of December 31, 2021, there are no assets or liabilities of discontinued operations.

Other Current Assets (Tables)

Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Prepaid Expense and Other Assets, Current [Abstract]
Other current assets	Other current assets consisted of the following: (in millions) December 31, December 31, Prepaid expenses (Note 2) $ 136.2 $ 84.3 Contract assets (Note 15) 5.2 1.8 Marketable securities (Note 19) 3.1 3.2 Other 87.1 66.8 Total other current assets $ 231.6 $ 156.1

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, plant and equipment	Property, plant and equipment, including those acquired by capital lease, consisted of the following: (in millions) December 31, December 31, Computer equipment and furniture $ 511.8 $ 451.8 Purchased software 218.3 179.0 Building and building improvements 139.8 118.0 Land 3.2 3.2 Total cost of property, plant and equipment 873.1 752.0 Less: accumulated depreciation (625.4) (532.3) Total property, plant and equipment, net of accumulated depreciation $ 247.7 $ 219.7

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill [Abstract]
Changes in the carrying amount of goodwill	Goodwill allocated to our reportable segments as of December 31, 2021, and 2020, and the changes in the carrying amount of goodwill during the periods, consisted of the following: (in millions) U.S. Markets International Consumer Total Balance, December 31, 2019 $ 1,486.1 $ 1,415.5 $ 241.2 $ 3,142.8 2020 Acquisitions 76.2 — — 76.2 Foreign exchange rate adjustment — 7.6 — 7.6 Balance, December 31, 2020 $ 1,562.3 $ 1,423.1 $ 241.2 $ 3,226.6 2021 Acquisitions 1,900.2 — 445.8 2,346.0 Purchase accounting measurement period adjustments (7.9) — — (7.9) Foreign exchange rate adjustment — (39.0) — (39.0) Balance, December 31, 2021 $ 3,454.6 $ 1,384.1 $ 687.0 $ 5,525.7

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible assets	Intangible assets consisted of the following: December 31, 2021 December 31, 2020 (in millions) Gross Accumulated Net Gross Accumulated Net Customer relationships $ 1,918.1 $ (225.3) $ 1,692.8 $ 561.4 $ (189.6) $ 371.8 Internal use software 1,765.9 (874.5) 891.4 1,270.4 (766.3) 504.1 Database and credit files 1,403.3 (655.0) 748.3 1,418.5 (566.1) 852.4 Trademarks, copyrights and patents 581.9 (146.7) 435.2 569.5 (129.8) 439.7 Noncompete and other agreements 10.3 (7.4) 2.9 12.4 (7.3) 5.1 Total intangible assets $ 5,679.5 $ (1,908.9) $ 3,770.6 $ 3,832.2 $ (1,659.1) $ 2,173.1
Estimated future amortization expense related to purchased intangible	Estimated future amortization expense related to intangible assets at December 31, 2021, is as follows: (in millions) Annual 2022 $ 402.7 2023 372.7 2024 345.0 2025 324.1 2026 302.7 Thereafter 2,023.4 Total future amortization expense $ 3,770.6

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Other assets	Other assets consisted of the following: (in millions) December 31, December 31, Investments in affiliated companies (Note 9) $ 240.5 $ 133.6 Right-of-use lease assets (Note 2 and 13) 145.1 59.8 Interest rate swaps (Notes 12 and 19) 12.1 — Other 61.3 29.1 Total other assets $ 459.0 $ 222.5

Investments in Affiliated Com_2

Investments in Affiliated Companies (Tables)	12 Months Ended
	Dec. 31, 2021
Investments in Affiliated Companies [Abstract]
Investments in and Advances to Affiliates	Investments in affiliated companies consisted of the following: (in millions) December 31, December 31, Equity Method investments $ 46.1 $ 46.1 Cost Method Investments 192.6 87.5 Limited Partnership investment 1.8 — Total investments in affiliated companies (Note 8) $ 240.5 $ 133.6
Schedule Of Equity Investments Income Statement Information	Earnings from equity method investments, which are included in other non-operating income and expense, and dividends received from equity method investments consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Earnings from equity method investments (Note 20) $ 12.0 $ 8.9 $ 13.2 Dividends received from equity method investments $ 11.0 $ 8.2 $ 10.3

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Other Liabilities, Current [Abstract]
Other Current Liabilities	Other current liabilities consisted of the following: (in millions) December 31, December 31, Income taxes payable (Note 3 and Note 17) $ 351.1 $ 7.8 Accrued payroll and employee benefits 279.9 147.9 Deferred revenue (Note 15) 133.6 79.3 Accrued legal and regulatory (Note 22) 85.6 76.0 Operating lease liabilities (Note 13) 38.4 16.9 Contingent consideration (Note 19) 16.8 37.8 Other 66.8 39.5 Total other current liabilities $ 972.2 $ 405.2

Other Liabilities (Tables)

Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Other Liabilities, Noncurrent [Abstract]
Other Noncurrent Liabilities	Other liabilities consisted of the following: (in millions) December 31, December 31, Operating lease liabilities (Note 13) $ 119.1 $ 49.0 Unrecognized tax benefits, net of indirect tax effects (Note 17) 40.7 34.4 Interest rate swaps (Notes 12 and 19) 34.5 89.7 Put option (Note 9 and 19) 11.9 — Deferred revenue (Note 15) 6.5 2.6 Other 20.2 34.5 Total other liabilities $ 232.9 $ 210.2

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Debt outstanding	Debt outstanding consisted of the following: (in millions) December 31, December 31, Senior Secured Term Loan B-6, payable in quarterly installments through December 1, 2028, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (2.75% at December 31, 2021), net of original issue discount and deferred financing fees of $7.7 million and $43.1 million, respectively, at December 31, 2021 $ 3,049.2 $ — Senior Secured Term Loan B-5, payable in quarterly installments through November 15, 2026, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (1.85% at December 31, 2021, and 1.90% at December 31, 2020), net of original issue discount and deferred financing fees of $3.2 million and $7.7 million, respectively, at December 31, 2021, and original issue discount and deferred financing fees of $3.9 million and $9.5 million, respectively, at December 31, 2020 2,227.1 2,335.6 Senior Secured Term Loan A-3, payable in quarterly installments through December 10, 2024, with periodic variable interest at LIBOR or alternate base rate, plus applicable margin (1.35% at December 31, 2021 and 1.40% at December 31, 2020), net of original issue discount and deferred financing fees of $1.9 million and $1.2 million, respectively, at December 31, 2021, and original issue discount and deferred financing fees of $2.6 million and $1.6 million, respectively, at December 31,2020 1,089.4 1,117.0 Senior Secured Revolving Credit Facility — — Other notes payable — 1.4 Finance leases 0.2 0.2 Total debt 6,365.9 3,454.2 Less short-term debt and current portion of long-term debt (114.6) (55.5) Total long-term debt $ 6,251.3 $ 3,398.7
Schedule of maturities of long-term debt	Excluding any potential additional principal payments which may become due on the Senior Secured Credit Facility based on excess cash flows of the prior year, scheduled future maturities of total debt at December 31, 2021, were as follows: (in millions) December 31, 2022 $ 114.6 2023 114.6 2024 1,034.5 2025 57.0 2026 2,165.0 Thereafter 2,945.0 Unamortized original issue discounts and deferred financing fees (64.8) Total debt $ 6,365.9

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Future Fixed Payments for non-cancelable operating leases and finance leases [Table Text Block]	Future fixed payments for non-cancelable operating leases and finance leases in effect as of December 31, 2021, are payable as follows: (in millions) Operating Leases Finance Leases Total 2022 $ 42.4 $ 0.1 $ 42.5 2023 35.8 0.1 35.9 2024 24.1 — 24.1 2025 16.7 — 16.7 2026 13.3 — 13.3 Thereafter 46.8 — 46.8 Less imputed interest (21.6) — (21.6) Totals $ 157.5 $ 0.2 $ 157.7

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Basic and diluted weighted average shares outstanding and earnings per share were as follows: Twelve Months Ended December 31, (in millions, except per share data) 2021 2020 2019 Income from continuing operations $ 370.5 $ 305.7 $ 304.0 Less: income from continuing operations attributable to noncontrolling interests (15.0) (12.4) (5.1) Income from continuing operations attributable to TransUnion $ 355.5 $ 293.4 $ 298.9 Discontinued operations, net of tax 1,031.7 49.8 48.0 Net income attributable to TransUnion $ 1,387.1 $ 343.2 $ 346.9 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 1.86 $ 1.54 $ 1.59 Discontinued operations, net of tax 5.39 0.26 0.26 Net Income attributable to TransUnion $ 7.25 $ 1.81 $ 1.85 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 1.84 $ 1.53 $ 1.56 Discontinued operations, net of tax 5.35 0.26 0.25 Net Income attributable to TransUnion $ 7.19 $ 1.79 $ 1.81 Weighted-average shares outstanding: Basic 191.4 189.9 187.8 Dilutive impact of stock based awards 1.6 2.3 4.1 Diluted 193.0 192.2 191.8

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The provision for income taxes consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Federal Current $ 62.0 $ 55.9 $ 39.1 Deferred (9.3) (8.0) (1.5) State Current 18.8 11.6 2.3 Deferred — (4.4) (7.9) Foreign Current 67.3 52.4 52.1 Deferred (7.9) (23.7) (13.6) Provision for income taxes $ 130.9 $ 83.7 $ 70.5
Components of net deferred income tax	Components of net deferred income tax consisted of the following: (in millions) December 31, 2021 December 31, 2020 Deferred income tax assets: Compensation $ 16.8 $ 18.5 Employee benefits 22.5 15.1 Legal reserves and settlements 13.2 13.5 Hedge investments 5.6 22.2 Loss and tax credit carryforwards 169.0 130.1 Leases 41.5 17.5 Other 38.4 16.9 Gross deferred income tax assets $ 307.0 $ 233.8 Valuation allowance (70.8) (65.7) Total deferred income tax assets, net $ 236.2 $ 168.0 Deferred income tax liabilities: Depreciation and amortization (947.5) (520.5) Right of use asset (38.9) (16.1) Taxes on unremitted foreign earnings (10.0) (10.8) Financing related costs (0.5) (0.8) Investment in affiliated companies (8.9) (4.6) Other (8.1) (8.4) Total deferred income tax liability (1,013.9) (561.4) Net deferred income tax liability $ (777.8) $ (393.3)
Reconciliation of the U.S. federal statutory tax rate to our effective tax rate	The effective income tax rate reconciliation consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Income taxes at statutory rate $ 105.3 21.0 % $ 81.8 21.0 % $ 78.6 21.0 % Increase (decrease) resulting from: State taxes, net of federal benefit 15.5 3.1 % 8.4 2.2 % (1.0) (0.3) % Foreign rate differential (6.8) (1.3) % (9.4) (2.4) % 10.6 2.8 % Excess tax benefits on stock-based compensation (10.8) (2.2) % (25.3) (6.5) % (37.8) (10.1) % Foreign tax law changes 22.7 4.5 % (0.1) — % (6.5) (1.7) % Uncertain tax positions 4.6 0.9 % 8.3 2.1 % 1.9 0.5 % Valuation allowances (5.0) (1.0) % 8.3 2.1 % (0.8) (0.2) % Foreign withholding taxes 6.5 1.3 % 5.2 1.3 % 12.4 3.3 % U.S. Federal tax on foreign earnings (15.1) (3.0) % 4.9 1.2 % 12.0 3.2 % U.S. Federal R&D tax credit (6.4) (1.3) % (4.4) (1.1) % (2.9) (0.8) % Nondeductible expenses 20.0 4.0 % 2.6 0.7 % 5.7 1.5 % Other 0.4 0.1 % 3.3 0.9 % (1.7) (0.5) % Total $ 130.9 26.1 % $ 83.7 21.5 % $ 70.5 18.8%
Summary of components of income (loss) from continuing operations before income taxes	The components of income before income taxes consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Domestic $ 318.3 $ 258.5 $ 267.6 Foreign 183.1 131.0 107.0 Income from continuing operations before income taxes $ 501.4 $ 389.5 $ 374.5
Total amount of unrecognized tax benefits	The total amount of gross unrecognized tax benefits consisted of the following: (in millions) December 31, 2021 December 31, 2020 December 31, 2019 Balance as of beginning of period $ 36.9 $ 32.8 $ 19.6 Increase in tax positions due to acquisition 5.3 — — Increase in tax positions of prior years 5.6 6.2 0.5 Decrease in tax positions of prior years (4.5) (3.6) (0.5) Increase in tax positions of current year 2.8 1.6 13.2 Reductions relating to settlement and lapse of statute (0.4) — — Balance as of end of period $ 45.8 $ 36.9 $ 32.8

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic Value of Options Exercised and Fair Value of Options vested	The intrinsic value of options exercised and the fair value of options vested for the periods presented are as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Intrinsic value of options exercised $ 31.4 $ 71.1 $ 106.4 Total fair value of options vested $ 1.7 $ 4.5 $ 7.4
2012 Management Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	Stock option activity as of December 31, 2021 and 2020, and for the year ended December 31, 2021, consisted of the following: Shares Weighted Weighted Aggregate Outstanding as of December 31, 2020 571,817 $ 8.58 2.7 $ 51.8 Granted — — Exercised (329,283) 8.97 Forfeited — — Expired — — Outstanding as of December 31, 2021 242,534 8.05 1.5 $ 26.8 Expected to vest as of December 31, 2021 — $ — 0.0 $ — Exercisable as of December 31, 2021 242,534 $ 8.05 1.5 $ 26.8
2015 Management Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	Restricted stock unit activity as of December 31, 2021 and 2020, and for the year ended December 31, 2021, consisted of the following: Shares Weighted Weighted Aggregate Outstanding as of December 31, 2020 2,187,949 78.85 1.0 $ 217.1 Granted 1,131,318 94.38 Vested (1,125,726) 73.96 Forfeited (188,476) 87.65 Outstanding as of December 31, 2021 2,005,065 $ 90.79 1.0 $ 237.8 Expected to vest as of December 31, 2021 2,057,500 $ 90.60 1.0 $ 244.0

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Financial instruments measured at fair value, on a recurring basis	The following table summarizes financial instruments measured at fair value, on a recurring basis, as of December 31, 2021: (in millions) Total Level 1 Level 2 Level 3 Assets Interest rate swaps (Note 8 and 12) $ 12.1 $ — $ 12.1 $ — Available-for-sale debt securities (Note 4) 3.1 — 3.1 — Total $ 15.2 $ — $ 15.2 $ — Liabilities Interest rate swaps (Note 11 and 12) $ 34.5 $ — $ 34.5 $ — Put option on Cost Method Investment (Note 9 and 11) 11.9 — — 11.9 Contingent consideration (Note 9 and 10) 16.8 — — 16.8 Total $ 63.2 $ — $ 34.5 $ 28.7	The following table summarizes financial instruments measured at fair value, on a recurring basis, as of December 31, 2020: (in millions) Total Level 1 Level 2 Level 3 Assets Available-for-sale debt securities (Note 4) $ 3.2 $ — $ 3.2 $ — Total $ 3.2 $ — $ 3.2 $ — Liabilities Interest rate swaps (Note 11 and 12) $ 89.7 $ — $ 89.7 $ — Contingent consideration (Note 10) 41.4 — — 41.4 Total $ 131.1 $ — $ 89.7 $ 41.4

Reportable Segments (Tables)

Reportable Segments (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of segment reporting information, by segment	Selected segment financial information and disaggregated revenue consisted of the following: Twelve Months Ended December 31, (in millions) 2021 2020 2019 Gross Revenue: U.S. Markets: Financial Services $ 1,078.9 $ 939.6 $ 849.0 Emerging Verticals 712.1 571.1 567.7 Total U.S. Markets 1,791.0 1,510.7 1,416.7 International: Canada 126.9 108.0 104.1 Latin America 103.2 86.5 104.2 United Kingdom 216.5 183.1 186.7 Africa 59.5 49.0 61.2 India 133.1 100.0 108.1 Asia Pacific 62.7 56.2 59.1 Total International 701.9 582.7 623.5 Total Consumer Interactive 545.8 513.1 497.8 Total revenue, gross $ 3,038.7 $ 2,606.5 $ 2,538.0 Intersegment revenue eliminations: U.S. Markets $ (70.5) $ (68.9) $ (68.7) International (5.9) (5.2) (5.1) Consumer Interactive (2.0) (1.7) (1.0) Total intersegment eliminations (78.4) (75.9) (74.8) Total revenue as reported $ 2,960.2 $ 2,530.6 $ 2,463.2
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated	A reconciliation of Segment Adjusted EBITDA to income from continuing operations before income taxes for the periods presented is as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets Adjusted EBITDA $ 715.6 $ 593.9 $ 573.7 International Adjusted EBITDA 300.1 219.8 258.1 Consumer Interactive Adjusted EBITDA 263.1 247.6 248.4 Total $ 1,278.8 $ 1,061.2 $ 1,080.2 Adjustments to reconcile to income from continuing operations before income taxes: Corporate expenses (1) (121.9) (107.6) (114.3) Net interest expense (109.2) (120.6) (166.2) Depreciation and amortization (377.0) (346.8) (338.6) Acquisition-related revenue adjustments (2) — — (5.6) Stock-based compensation (3) (70.1) (45.9) (55.3) Mergers and acquisitions, divestitures and business optimization (4) (52.6) (8.5) (1.1) Accelerated technology investment (5) (42.3) (19.3) — Net other (6) (19.4) (35.5) (29.7) Net income attributable to non-controlling interests 15.0 12.4 5.1 Total adjustments $ (777.4) $ (671.8) $ (705.7) Income from continuing operations before income taxes $ 501.4 $ 389.5 $ 374.5 (1) Certain costs that are not directly attributable to one or more of the segments remain in Corporate. These costs are typically enterprise-level costs and are primarily administrative in nature. (2) This adjustment represents certain non-cash adjustments related to acquired entities, predominantly adjustments to increase revenue resulting from purchase accounting reductions to deferred revenue we record on the opening balance sheets of acquired entities. Beginning in the third quarter of 2019, we no longer have these adjustments to revenue. (3) Consisted of stock-based compensation and cash-settled stock-based compensation. (4) For the twelve months ended December 31, 2021, consisted of the following adjustments: $(48.1) million of acquisition expe nses; $(9.1) million of Neustar integration costs; $(8.4) million of adjustments to contingent consideration expense from previous acquisitions; a ($1.1) million gain reduction to notes receivable that were converted into equity upon acquisition and consolidation of an entity; a $12.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $1.1 million reimbursement for transition services related to divested businesses, net of separation expenses; and a $0.5 million gain on the sale of a Cost Method investment. For the twelve months ended December 31, 2020, consisted of the following adjustments: $(7.5) million of Callcredit integration costs; $(7.0) million of acquisition expenses; a $(4.8) million loss on the impairment of a Cost Method investment; $(1.7) million of adjustments to contingent consideration expense from previous acquisitions; an $8.1 million remeasurement gain on notes receivable that were converted into equity upon acquisition and consolidation of an entity; a $2.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $1.8 million gain on the disposal of assets of a small business in our United Kingdom region; and a $0.1 million reimbursement for transition services provided to the buyers of certain of our discontinued operations. For the twelve months ended December 31, 2019, consisted of the following adjustments: a $31.2 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issuer; a $0.5 million reimbursement for transition services provided to the buyers of certain of our discontinued operations; $(15.8) million of Callcredit integration costs; a $(10.0) million loss on the impairment of certain Cost Method investments; a $(3.7) million loss on assets of a small business in our United Kingdom region that are classified as held-for-sale; $(2.4) million of acquisition expenses; and a $(0.8) million adjustment to contingent consideration expense from previous acquisitions. (5) Represents expenses associated with our accelerated technology investment to migrate to the cloud. (6) For the twelve months ended December 31, 2021, consisted of the following adjustme nts: ($17.9) million of deferred loan fees written off as a result of the prepayments on our debt; ($1.2) million in certain legal and regulat ory expenses; a $3.5 million recovery from the Fraud Incident, net of additional administrative expense; and a ($3.7) million net loss from currency remeasurement of our foreign operations, loan fees and other. For the twelve months ended December 31, 2020, consisted of the following adjustments: $(34.7) million for certain legal expenses; $(0.9) million of deferred loan fees written off as a result of the prepayments on our debt; a $1.5 million recovery from the Fraud Incident, net of additional administrative expense; and a $(1.4) million net loss from currency remeasurement of our foreign operations, loan fees and other. For the twelve months ended December 31, 2019, consisted of the following adjustments: $(13.5) million of expenses associated with the Fraud Incident, net of the portion that is attributable to the non-controlling interest; $(13.0) million of fees related to the refinancing of senior secured credit facility; $(2.0) million of deferred loan fees written off as a result of the prepayments on our debt; and $(1.3) million loss from currency remeasurement, loan fees, reduction to expenses for certain legal and regulatory matters and other.
Other income and expense, net, included earnings (losses) from equity method investments	Earnings from equity method investments included in non-operating income and expense was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 2.4 $ 2.6 $ 2.6 International 9.6 6.4 10.6 Total $ 12.0 $ 8.9 $ 13.2
Reconciliation of Assets from Segment to Consolidated	Total assets, by segment, consisted of the following: (in millions) December 31, 2021 December 31, 2020 U.S. Markets $ 6,934.8 $ 3,182.5 International 2,921.2 2,974.5 Consumer Interactive 1,222.3 458.9 Total segment assets $ 11,078.2 $ 6,615.9 Corporate 1,556.8 267.5 Discontinued operations — 428.1 Total assets $ 12,635.0 $ 7,311.6
Cash paid for capital expenditures, by segment	Cash paid for capital expenditures, by segment, was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 145.3 $ 119.1 $ 112.1 International 65.1 68.2 59.8 Consumer Interactive 11.8 12.8 13.4 Corporate 2.0 5.5 3.2 Total $ 224.2 $ 205.6 $ 188.4
Depreciation and amortization expense of continuing operations, by segment	Depreciation and amortization expense by segment was as follows: Twelve Months Ended December 31, (in millions) 2021 2020 2019 U.S. Markets $ 222.0 $ 205.8 $ 201.4 International 132.4 120.6 118.6 Consumer Interactive 16.8 14.6 13.3 Corporate 5.7 5.7 5.2 Total $ 377.0 $ 346.8 $ 338.6
Revenue based on the country	Percentage of revenue based on where it was earned, was as follows: Twelve Months Ended December 31, 2021 2020 2019 Domestic 76 % 77 % 75 % International 24 % 23 % 25 %
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset	Percentage of long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset, was as follows: As of December 31, 2021 2020 2019 Domestic 76 % 59 % 59 % International 24 % 41 % 41 %

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments [Abstract]
Summary of future minimum payments for noncancelable operating leases, purchase obligations and other liabilities	Future minimum payments for noncancelable operating leases, purchase obligations and other liabilities in effect as of December 31, 2021, are payable as follows: (in millions) Operating Purchase Total 2022 $ 42.4 $ 141.1 $ 183.5 2023 35.8 93.3 129.1 2024 24.1 55.9 80.0 2025 16.7 43.2 59.9 2026 13.3 0.8 14.1 Thereafter 46.8 0.3 47.1 Totals $ 179.1 $ 334.6 $ 513.7

Quarterly Financial Data (Una_2

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2021
Quarterly Financial Data [Abstract]
Summary of quarterly financial data	The quarterly financial data for 2021 and 2020 consisted of the following: Three Months Ended (in millions) December 31, 2021 (1) September 30, 2021 (2) June 30, 2021 (3) March 31, Revenue $ 789.8 $ 743.4 $ 728.2 $ 698.9 Operating income 114.0 169.7 200.4 163.6 Income from continuing operations 34.4 96.7 122.1 117.3 Net income 1,020.5 118.2 132.9 130.6 Net income attributable to TransUnion 1,017.4 114.2 127.6 127.9 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.16 $ 0.48 $ 0.61 $ 0.60 Net Income attributable to TransUnion $ 5.31 $ 0.60 $ 0.67 $ 0.67 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.16 $ 0.48 $ 0.61 $ 0.60 Net Income attributable to TransUnion $ 5.27 $ 0.59 $ 0.66 $ 0.66 Three Months Ended (in millions) December 31, 2020 (4) September 30, 2020 (4) June 30, 2020 (4) ` March 31, 2020 (4,5) Revenue $ 653.3 $ 650.5 $ 587.1 $ 639.6 Operating income 128.8 144.9 106.0 120.6 Income from continuing operations 92.5 92.3 58.2 62.8 Net income 104.5 106.7 70.0 74.3 Net income attributable to TransUnion 101.7 102.8 68.5 70.2 Basic earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.47 $ 0.46 $ 0.30 $ 0.31 Net Income attributable to TransUnion $ 0.53 $ 0.54 $ 0.36 $ 0.37 Diluted earnings per common share from: Income from continuing operations attributable to TransUnion $ 0.47 $ 0.46 $ 0.30 $ 0.31 Net Income attributable to TransUnion $ 0.53 $ 0.53 $ 0.36 $ 0.37 1 Net income and net income attributable to TransUnion includes a gain on the disposal of our Healthcare business of $982.5 million. Inc ome from cont inuing operations, net income, and net income attributable to TransUnion include $27.7 million for acquisition expenses, $17.4 million for deferred fees write-off, and $9.1 million for integration costs, partially offset by a $12.5 million gain on a Cost Method investment resulting from an observable price change for a similar investment of the same issue. Operating income, income from co ntinuing operations, net income, and net income attributable to Trans Union include $21.6 million for certain legal expenses. 2 Net income and net income attributable to TransUnion includes a $12.9 million gain on the sale of a Cost Method investment of our discontinued operations. Income from continuing operations, net income, and net income attributable to TransUnion include $18.3 million for acquisition expenses. Operating income, income from continuing operations, net income, and net income attributable to TransUnion include $12.0 million for certain legal expenses. 3 Operating income, income from continuing operations, net income, and net income attributable to TransUnion include a $32.4 million net reduction in certain legal expenses. 4 For 2020, beginning in mid-March 2020, the COVID-19 pandemic, widespread measures implemented to contain its effects, and business and consumer responses to such measures, had a material and adverse impact on numerous aspects of our business, including customer demand for our services and solutions in all of our segments. 5 Operating income, income from continuing operations, net income, and net income attributable to TransUnion all include $30.5 million for certain legal expenses.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
Component accumulated other comprehensive income (loss)	The following table sets forth the changes in each component of accumulated other comprehensive loss, net of tax: (in millions) Foreign Currency Net Unrealized Net Unrealized Accumulated Other Balance, December 31, 2018 $ (279.6) $ (3.3) $ 0.2 $ (282.7) Change 65.0 (33.9) — 31.1 Balance, December 31, 2019 $ (214.6) $ (37.2) $ 0.2 $ (251.6) Change 9.2 (29.9) 0.2 (20.5) Balance, December 31, 2020 $ (205.4) $ (67.1) $ 0.4 $ (272.1) Change (63.8) 50.5 — (13.3) Balance, December 31, 2021 $ (269.2) $ (16.6) $ 0.4 $ (285.4)

Significant Accounting and Re_3

Significant Accounting and Reporting Policies (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)performance_obligationsegment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Summary of Significant Accounting Policies (Textual) [Abstract]
Number of Operating Segments | segment	3
Number of Types of Performance Obligations | performance_obligation	2
Advertising costs	$ 92.9	$ 89.8	$ 83.3
Expenses related to defined contribution profit sharing plan	34.5	27.2	29.6
Impairment of intangible assets, finite-lived	0	0	0
Accounts Receivable, Allowance for Credit Loss	10.7	17.1	13.4	$ 10.5
Accounts Receivable, Allowance for Credit Loss, Writeoff	(3.8)	(6.1)	(5.4)
Net Unrealized Gain/(Loss) On Available-for-sale Securities
Summary of Significant Accounting Policies (Textual) [Abstract]
Other than Temporary Impairment Losses, Investments	0	0	$ 0
Realized Investment Gains (Losses)	$ 0	$ 0
Building and Building Improvements [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of the asset	20 years
Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life	3 years
Minimum [Member] | Internal Use Software [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life	3 years
Minimum [Member] | Computer Equipment and Purchased Software [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of the asset	3 years
Minimum [Member] | Other Assets [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of the asset	5 years
Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life	40 years
Maximum [Member] | Internal Use Software [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life	10 years
Maximum [Member] | Computer Equipment and Purchased Software [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of the asset	7 years
Maximum [Member] | Other Assets [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of the asset	7 years
Stand Ready Performance Obligations [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Revenue, Performance Obligation, Description of Good or Service	those that require us to stand ready to provide goods and services to a customer to use as and when requested (“Stand Ready Performance Obligations”)
Other Performance Obligations [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Revenue, Performance Obligation, Description of Good or Service	those that do not require us to stand ready (“Other Performance Obligations”)

Business Acquisitions - Narrati

Business Acquisitions - Narrative (Details) - USD ($) $ in Millions	Dec. 01, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Revenue		$ 789.8	$ 743.4	$ 728.2	$ 698.9	$ 653.3	$ 650.5	$ 587.1	$ 639.6	$ 2,960.2	$ 2,530.6	$ 2,463.2
Net income		(1,020.5)	(118.2)	$ (132.9)	$ (130.6)	$ (104.5)	$ (106.7)	$ (70)	$ (74.3)	(1,402.2)	(355.6)	(352)
Business combination, acquisition related costs		$ 27.7	$ 18.3
U.S. Markets
Business Acquisition [Line Items]
Revenue										1,791	$ 1,510.7	$ 1,416.7
Neustar
Business Acquisition [Line Items]
Business combination, acquisition related costs										29.7
Business acquisition, percentage of voting interests acquired	100.00%
Business combination, consideration transferred	$ 3,106.6
Neustar | U.S. Markets
Business Acquisition [Line Items]
Revenue										51
Net income										11.7
Sontiq
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Business combination, consideration transferred	$ 642.8
TransUnion and Neustar combined
Business Acquisition [Line Items]
Business combination, acquisition related costs										38.8
Business combination, consideration transferred	$ 3,749.4
Tru Optik
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired						100.00%					100.00%
Signal And TruSignal
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired												100.00%
TransUnion
Business Acquisition [Line Items]
Business combination, acquisition related costs										$ 88.2

Business Acquisitions - Assets

Business Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets acquired:
Goodwill		$ 5,525.7	$ 3,226.6	$ 3,142.8
Liabilities assumed:
Business acquisition, goodwill, expected tax deductible amount	$ 326.6
Neustar
Business Acquisition [Line Items]
Business combination, consideration transferred	3,106.6
Assets acquired:
Cash and cash equivalents	122.7
Trade accounts receivable	118.7
Other current assets	24.9
Right of use lease assets	83.2
Property, plant and equipment	42.5
Identifiable intangible assets	1,513
Goodwill	1,900.3
Other assets	5.4
Total assets acquired	3,810.7
Liabilities assumed:
Accounts payable	29.1
Other current liabilities	157.6
Deferred revenue	49.3
Operating lease liabilities	88.3
Other liabilities	14.7
Deferred tax liabilities	365.1
Total liabilities assumed	704.1
Net assets acquired:	3,106.6
Sontiq
Business Acquisition [Line Items]
Business combination, consideration transferred	642.8
Assets acquired:
Cash and cash equivalents	17.8
Trade accounts receivable	10.4
Other current assets	1.4
Right of use lease assets	2.4
Property, plant and equipment	5.2
Identifiable intangible assets	237.2
Goodwill	445.8
Other assets	0.2
Total assets acquired	720.3
Liabilities assumed:
Accounts payable	7
Other current liabilities	4.7
Deferred revenue	19.1
Operating lease liabilities	2.4
Other liabilities	0.1
Deferred tax liabilities	44.2
Total liabilities assumed	77.5
Net assets acquired:	642.8
TransUnion and Neustar combined
Business Acquisition [Line Items]
Business combination, consideration transferred	3,749.4
Assets acquired:
Cash and cash equivalents	140.4
Trade accounts receivable	129.1
Other current assets	26.3
Right of use lease assets	85.6
Property, plant and equipment	47.7
Identifiable intangible assets	1,750.2
Goodwill	2,346
Other assets	5.6
Total assets acquired	4,531
Liabilities assumed:
Accounts payable	36.1
Other current liabilities	162.3
Deferred revenue	68.5
Operating lease liabilities	90.7
Other liabilities	14.8
Deferred tax liabilities	409.3
Total liabilities assumed	781.6
Net assets acquired:	$ 3,749.4

Business Acquisitions - Identif

Business Acquisitions - Identifiable Intangible Assets (Details) $ in Millions	Dec. 01, 2021USD ($)
Neustar
Business Acquisition [Line Items]
Fair Value	$ 1,513
Weighted-Average Amortization Period	16 years
Neustar | Customer relationships
Business Acquisition [Line Items]
Fair Value	$ 1,183
Weighted-Average Amortization Period	18 years
Neustar | Technology and software
Business Acquisition [Line Items]
Fair Value	$ 320
Weighted-Average Amortization Period	10 years
Neustar | Trade names and trademarks
Business Acquisition [Line Items]
Fair Value	$ 10
Weighted-Average Amortization Period	1 year
Neustar | Non-compete agreements
Business Acquisition [Line Items]
Fair Value	$ 0
Sontiq
Business Acquisition [Line Items]
Fair Value	$ 237.2
Weighted-Average Amortization Period	15 years
Sontiq | Customer relationships
Business Acquisition [Line Items]
Fair Value	$ 184.1
Weighted-Average Amortization Period	17 years
Sontiq | Technology and software
Business Acquisition [Line Items]
Fair Value	$ 49.3
Weighted-Average Amortization Period	10 years
Sontiq | Trade names and trademarks
Business Acquisition [Line Items]
Fair Value	$ 1.5
Weighted-Average Amortization Period	1 year
Sontiq | Non-compete agreements
Business Acquisition [Line Items]
Fair Value	$ 2.3
Weighted-Average Amortization Period	2 years

Business Acquisitions - Pro For

Business Acquisitions - Pro Forma (Details) - Neustar - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 3,493.2	$ 3,064.5
Pro-forma net income from continuing operations attributable to TransUnion	$ 247.6	$ 72.9

Discontinued Operations - Narra

Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	Dec. 17, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses			$ 1,706.8	$ 1.6	$ 40.3
Discontinued Operations, Disposed of by Sale | Healthcare Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	$ 1,705.9
Income (loss) from discontinued operations, net of tax, including portion attributable to noncontrolling interest	$ 1,400		1,031.7	49.8	52.6
Gain on sale of discontinued operations, net of tax		$ 982.5	$ 982.5	$ 0	$ 0

Discontinued Operations - Finan

Discontinued Operations - Financial Results (Details) - Discontinued Operations, Disposed of by Sale - Healthcare Business - USD ($) $ in Millions	Dec. 17, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Revenue			$ 184.8	$ 185.9	$ 192.9
Operating expenses
Cost of services (exclusive of depreciation and amortization below)			65.6	66.5	68.6
Selling, general and administrative			39.1	30.6	34.7
Depreciation and amortization			16.5	21.1	23.5
Total operating expenses			121.2	118.2	126.8
Operating income of discontinued operations			63.6	67.7	66.1
Non-operating income and (expense)			1.9	(1.4)	(0.1)
Income before income taxes from discontinued operations			65.5	66.3	66
Provision for income taxes			(16.3)	(16.5)	(13.4)
Gain on sale of discontinued operations, net of tax		$ 982.5	982.5	0	0
Income from discontinued operations, net of tax	$ 1,400		1,031.7	49.8	52.6
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue			184.8	185.9	192.9
Cost of services (exclusive of depreciation and amortization below)			65.6	66.5	68.6
Selling, general and administrative			39.1	30.6	34.7
Depreciation and amortization			16.5	21.1	23.5
Total operating expenses			121.2	118.2	126.8
Operating income of discontinued operations			63.6	67.7	66.1
Non-operating income and (expense)			1.9	(1.4)	(0.1)
Income before income taxes from discontinued operations			65.5	66.3	66
Provision for income taxes			16.3	16.5	13.4
Gain on sale of discontinued operations, net of tax		$ 982.5	982.5	0	0
Less: Discontinued operations, net of tax	$ 1,400		$ 1,031.7	$ 49.8	$ 52.6

Discontinued Operations - Carry

Discontinued Operations - Carrying Amounts (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Liabilities:
Current liabilities		$ 20.7
Healthcare Business | Discontinued Operations, Disposed of by Sale
Assets:
Trade accounts receivable	$ 0	60.9
Other current assets	0	3.9
Goodwill	0	235
Other intangible assets	0	111.5
Other non-current assets	0	16.8
Total assets of discontinued operations	0	428.1
Liabilities:
Current liabilities	0	15.4
Non-current liabilities	0	5.3
Total liabilities of discontinued operations	$ 0	$ 20.7

Other Current Assets (Details)

Other Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other current assets
Prepaid expenses (Note 2)	$ 136.2	$ 84.3
Marketable securities (Note 19)	3.1	3.2
Contract assets (Note 15)	5.2	1.8
Other	87.1	66.8
Other current assets	$ 231.6	$ 156.1

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment
Computer equipment and furniture	$ 511.8	$ 451.8
Purchased software	218.3	179
Building and building improvements	139.8	118
Land	3.2	3.2
Total cost of property, plant and equipment	873.1	752
Less: accumulated depreciation	(625.4)	(532.3)
Total property, plant and equipment, net of accumulated depreciation	$ 247.7	$ 219.7

Property, Plant, and Equipment

Property, Plant, and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property Plant and Equipment (Textual) [Abstract]
Depreciation	$ 98.8	$ 94	$ 85.6

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Changes in the carrying amount of goodwill
Beginning balance	$ 3,226.6	$ 3,142.8
Purchase accounting adjustments related to acquisition of TransUnion Corp	(7.9)
Goodwill, Acquired During Period	2,346	76.2
Foreign exchange rate adjustment	(39)	(7.6)
Ending balance	5,525.7	3,226.6
U.S. Markets [Member]
Changes in the carrying amount of goodwill
Beginning balance	1,562.3	1,486.1
Purchase accounting adjustments related to acquisition of TransUnion Corp	7.9
Goodwill, Acquired During Period	1,900.2	76.2
Foreign exchange rate adjustment	0	0
Ending balance	3,454.6	1,562.3
International [Member]
Changes in the carrying amount of goodwill
Beginning balance	1,423.1	1,415.5
Purchase accounting adjustments related to acquisition of TransUnion Corp	0
Goodwill, Acquired During Period	0	0
Foreign exchange rate adjustment	(39)	(7.6)
Ending balance	1,384.1	1,423.1
Consumer Interactive [Member]
Changes in the carrying amount of goodwill
Beginning balance	241.2	241.2
Purchase accounting adjustments related to acquisition of TransUnion Corp	0
Goodwill, Acquired During Period	445.8	0
Foreign exchange rate adjustment	0	0
Ending balance	$ 687	$ 241.2

Goodwill (Details Textual)

Goodwill (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill (Textual) [Abstract]
Accumulated goodwill impairment losses	$ 0
Goodwill, Impairment Loss	$ 0	$ 0	$ 0

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Intangible assets
Gross	$ 5,679.5	$ 3,832.2
Accumulated amortization	(1,908.9)	(1,659.1)
Finite-Lived Intangible Assets, Net, Total	3,770.6	2,173.1
Database and credit files [Member]
Intangible assets
Gross	1,403.3	1,418.5
Accumulated amortization	(655)	(566.1)
Finite-Lived Intangible Assets, Net, Total	748.3	852.4
Internal Use Software [Member]
Intangible assets
Gross	1,765.9	1,270.4
Accumulated amortization	(874.5)	(766.3)
Finite-Lived Intangible Assets, Net, Total	891.4	504.1
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Period Increase (Decrease)	140.3
Customer relationships [Member]
Intangible assets
Gross	1,918.1	561.4
Accumulated amortization	(225.3)	(189.6)
Finite-Lived Intangible Assets, Net, Total	1,692.8	371.8
Trademarks, copyrights and patents [Member]
Intangible assets
Gross	581.9	569.5
Accumulated amortization	(146.7)	(129.8)
Finite-Lived Intangible Assets, Net, Total	435.2	439.7
Non-compete agreements
Intangible assets
Gross	10.3	12.4
Accumulated amortization	(7.4)	(7.3)
Finite-Lived Intangible Assets, Net, Total	$ 2.9	$ 5.1

Intangible Assets (Details 1)

Intangible Assets (Details 1) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Estimated future amortization expense related to purchased intangible
2021	$ 402.7
2022	372.7
2023	345
2024	324.1
2025	302.7
Thereafter	2,023.4
Finite-Lived Intangible Assets, Net, Total	$ 3,770.6	$ 2,173.1

Intangible Assets (Details Text

Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Assets, Remaining Amortization Period	15 years
Finite-Lived Intangible Assets, Translation and Purchase Accounting Adjustments	$ 33.4
Identifiable intangible assets	1,750.2
Amortization expense for intangible assets	$ 278.2	$ 252.7	$ 253
Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	40 years
Database and credit files [Member] | Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	12 years
Database and credit files [Member] | Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	15 years
Internal Use Software [Member] | Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	3 years
Internal Use Software [Member] | Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer relationships [Member] | Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer relationships [Member] | Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	20 years
Trademarks, copyrights and patents [Member] | Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	1 year
Trademarks, copyrights and patents [Member] | Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	20 years
Trade Names
Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life	40 years

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Investments in affiliated companies (Note 9)	$ 240.5	$ 133.6
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Right-of-use lease assets (Note 2 and 13)	$ 145.1	$ 59.8
Interest rate caps	12.1	0
Other Assets, Miscellaneous, Noncurrent	61.3	29.1
Total other assets	$ 459	$ 222.5

Investments in Affiliated Com_3

Investments in Affiliated Companies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments in Affiliated Companies [Abstract]
Equity Method investments	$ 46.1	$ 46.1
Cost Method Investments	192.6	87.5
Limited Partnership investment	1.8	0
Total investments in affiliated companies (Note 8)	240.5	133.6
Earnings from equity method investments	12	8.9	$ 13.2
Dividends received from equity method investments	$ 11	8.2	$ 10.3
Unrealized Loss On Investment		$ 4.8

Investments in Affiliated Com_4

Investments in Affiliated Companies (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments in Affiliated Companies [Abstract]
Unrealized Gain on Securities				$ 31.2
Unrealized Loss on Securities				$ 10
Unrealized Gain (Loss) on Investments		$ 12.5	$ 2.5
Unrealized Gain On Investment	$ 12.5	$ 12.5	$ 2.5

Other Current Liabilities (Deta

Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other current liabilities
Income taxes payable (Note 3 and Note 17)	$ 351.1	$ 7.8
Accrued payroll and employee benefits	279.9	147.9
Deferred revenue (Note 15)	133.6	79.3
Accrued legal and regulatory (Note 22)	$ 85.6	$ 76
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other current liabilities	Total other current liabilities
Operating lease liabilities (Note 13)	$ 38.4	$ 16.9
Contingent consideration (Note 19)	16.8	37.8
Other	66.8	39.5
Total other current liabilities	$ 972.2	$ 405.2

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Operating lease liabilities (Note 13)	$ 119.1	$ 49
Unrecognized tax benefits, net of indirect tax effects (Note 17)	40.7	34.4
Interest rate swaps (Notes 12 and 19)	34.5	89.7
Deferred revenue (Note 15)	6.5	2.6
Other	20.2	34.5
Total other liabilities	$ 232.9	$ 210.2
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total other liabilities	Total other liabilities
Put Option
Derivative [Line Items]
Put option (Note 9 and 19)	$ 11.9	$ 0

Debt Outstanding (Details)

Debt Outstanding (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 01, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt and Capital Lease Obligations Outstanding	$ 6,365.9		$ 3,454.2
Less short-term debt and current portion of long-term debt	(114.6)		(55.5)
Long-term debt	6,251.3		3,398.7
Senior Secured Term Loan B-5 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	2,217		2,351.9
Debt and Capital Lease Obligations Outstanding	2,227.1		2,335.6
Debt Instrument, Unamortized Discount (Premium), Net	3.2		3.9
Debt Issuance Costs, Noncurrent, Net	$ 7.7		$ 9.5
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.85%		1.90%
Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,076.1		$ 1,112.8
Debt and Capital Lease Obligations Outstanding	1,089.4		1,117
Debt Instrument, Unamortized Discount (Premium), Net	1.9		2.6
Debt Issuance Costs, Noncurrent, Net	$ 1.2		$ 1.6
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.35%		1.40%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt and Capital Lease Obligations Outstanding	$ 0		$ 0
Other notes payable
Debt Instrument [Line Items]
Debt and Capital Lease Obligations Outstanding	0		1.4
Finance leases
Debt Instrument [Line Items]
Debt and Capital Lease Obligations Outstanding	0.2		0.2
Senior Secured Term Loan B-6
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	3,096.1
Debt and Capital Lease Obligations Outstanding	3,049.2		$ 0
Debt Instrument, Unamortized Discount (Premium), Net	7.7	$ 7.8
Debt Issuance Costs, Noncurrent, Net	$ 43.1	$ 43.6
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	2.75%

Schedule of Debt Matuities (Det

Schedule of Debt Matuities (Details) $ in Millions	Dec. 31, 2021USD ($)
Schedule of Debt Maturities
2022	$ 114.6
2023	114.6
2024	1,034.5
2025	57
2026	2,165
Thereafter	2,945
Unamortized original issue discounts and deferred financing fees	(64.8)
Total debt	$ 6,365.9

Senior Secured Credit Facility

Senior Secured Credit Facility (Details) - USD ($) $ in Millions	Dec. 23, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 01, 2021
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)		$ 17.4	$ 17.9	$ 0.9	$ 2
Debt and Lease Obligation		6,365.9	6,365.9	3,454.2
Incremental Borrowings, Amount		$ 1,000	$ 1,000
Incremental Borrowings Criteria, Percentage of Consolidated EBITDA		100.00%	100.00%
Incremental Borrowings Criteria, Senior Secured Leverage ratio		4.25	4.25
Net Leverage Ratio Requirement		5.5	5.5
Covenant Dividend Restriction Amount		$ 100	$ 100
Covenant Dividend Restriction Percentage of Consolidated EBITDA		10.00%	10.00%
Net Leverage Ratio Requirement, Dividends		4.75	4.75
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation		$ 0	$ 0
Letters of Credit Outstanding, Amount		0.1	0.1
Line of Credit Facility, Remaining Borrowing Capacity		299.9	299.9
Senior Secured Term Loan B-5 [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net		3.2	3.2	3.9
Debt Issuance Costs, Noncurrent, Net		7.7	$ 7.7	9.5
Debt Instrument, Basis Spread on Variable Rate			1.75%
Principle Payment Quarterly Percent			0.25%
Debt and Lease Obligation		2,227.1	$ 2,227.1	2,335.6
Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net		1.9	1.9	2.6
Debt Issuance Costs, Noncurrent, Net		1.2	$ 1.2	1.6
Principle Payment Quarterly Percent			0.625%
Stepped-up Percent Principle Payment			1.25%
Debt and Lease Obligation		1,089.4	$ 1,089.4	1,117
Senior Secured Term Loan B-6
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net		7.7	7.7			$ 7.8
Debt Issuance Costs, Noncurrent, Net		43.1	$ 43.1			43.6
Debt Instrument, Face Amount						3,100
Principle Payment Quarterly Percent			0.25%
Debt and Lease Obligation		$ 3,049.2	$ 3,049.2	0
Senior Secured Term Loan B-6 | Interest Rate Floor
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.50%
Senior Secured Term Loan B-6 | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.00%
Senior Secured Term Loan B-6 | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
Second Lien Term Loan
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net						3.2
Debt Issuance Costs, Noncurrent, Net						14.3
Debt Instrument, Face Amount						$ 640
Debt Instrument, Basis Spread on Variable Rate			5.00%
Second Lien Term Loan | Unamortized Original Issue Discount
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	$ 3.2
Second Lien Term Loan | Deferred Fees
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	$ 14.2
Senior Secured Term Loan
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)			$ 0.5	0.9
Payment for Debt Extinguishment or Debt Prepayment Cost			85	$ 150
Credit Agreement
Debt Instrument [Line Items]
Excess Principal Payments			$ 0
Minimum 1 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.25%
Line of Credit Facility, Commitment Fee Percentage			0.20%
Minimum 1 [Member] | Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.25%
Minimum 1 [Member] | Credit Agreement
Debt Instrument [Line Items]
Percentage of Excess Cash Flows to Determine Principal Payment			0.00%
Mid-Point [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.50%
Line of Credit Facility, Commitment Fee Percentage			0.25%
Mid-Point [Member] | Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.50%
Maximum 1 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.75%
Line of Credit Facility, Commitment Fee Percentage			0.30%
Maximum 1 [Member] | Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.75%
Maximum 1 [Member] | Credit Agreement
Debt Instrument [Line Items]
Percentage of Excess Cash Flows to Determine Principal Payment			50.00%

Debt - Interest Rate Hedging (D

Debt - Interest Rate Hedging (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2016
Debt Instrument [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (50.5)	$ 29.9	$ 33.9
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	1,390
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	(67.3)	43.5	35.4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(50.5)	32.7	26.7
Interest Expense (Income), Hedge, Gross Of Tax	41.8	32.3	5.6
Interest Expense, (Income), Hedge, Net Of Tax	31.4	23.3	4.2
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	47.1
Interest Rate Cap [Member]
Debt Instrument [Line Items]
Derivative, Cap Interest Rate				0.75%
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	0	(4.1)	11
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(2.8)	8.2
Interest Expense (Income), Hedge, Gross Of Tax		6.7	1.9
Interest Expense, (Income), Hedge, Net Of Tax		$ 5.1	$ 1.4
2020 2 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	1,120
2021 Interest Rate Swap
Debt Instrument [Line Items]
Derivative, Notional Amount	1,600
2020 3 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	$ 1,110
Minimum [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	2.702%
Minimum [Member] | 2020 2 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	0.52%
Minimum [Member] | 2021 Interest Rate Swap
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	1.428%
Minimum [Member] | 2020 3 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	0.9125%
Maximum [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	2.706%
Maximum [Member] | 2020 2 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	0.5295%
Maximum [Member] | 2021 Interest Rate Swap
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	1.436%
Maximum [Member] | 2020 3 year Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate	0.928%

Fair Value of Debt (Details)

Fair Value of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Senior Secured Term Loan B-6
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	$ 3,096.1
Senior Secured Term Loan B-5 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	2,217	$ 2,351.9
Senior Secured Term Loan A-3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,076.1	$ 1,112.8

Leases (Details)

Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Leased Assets [Line Items]
Operating Lease, Weighted Average Remaining Lease Term	6 years 7 months 6 days	5 years 4 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.10%	5.70%
Operating Lease, Cost	$ 30.4	$ 33.4	$ 32.4
Operating Lease, Payments	30.9	$ 34.2	$ 32.4
Leases Maturity Schedule [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	42.4
Finance Lease, Liability, Payments, Due Next Twelve Months	0.1
Total, 2021	183.5
Lessee, Operating Lease, Liability, Payments, Due Year Two	35.8
Finance Lease, Liability, Payments, Due Year Two	0.1
Total, 2022	129.1
Lessee, Operating Lease, Liability, Payments, Due Year Three	24.1
Finance Lease, Liability, Payments, Due Year Three	0
Total, 2023	80
Lessee, Operating Lease, Liability, Payments, Due Year Four	16.7
Finance Lease, Liability, Payments, Due Year Four	0
Total, 2024	59.9
Lessee, Operating Lease, Liability, Payments, Due Year Five	13.3
Finance Lease, Liability, Payments, Due Year Five	0
Total, 2025	14.1
Lessee, Operating Lease, Liability, Payments, Due after Year Five	46.8
Finance Lease, Liability, Payments, Due after Year Five	0
Total, Thereafter	47.1
Imputed interest, operating lease	(21.6)
imputed interest, finance leases	$ 0
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities
Finance Lease, Liability	$ 0.2
Totals	513.7
Liabilities, Total
Leases Maturity Schedule [Abstract]
Operating Lease, Liability	157.5
Obligations
Leases Maturity Schedule [Abstract]
Total, 2021	42.5
Total, 2022	35.9
Total, 2023	24.1
Total, 2024	16.7
Total, 2025	13.3
Total, Thereafter	46.8
Lessee, Lease, Liability, Undiscounted Excess Amount	(21.6)
Totals	$ 157.7
Maximum [Member]
Schedule of Leased Assets [Line Items]
Lessee, Operating Lease, Term of Contract	11 years 1 month 6 days

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	May 11, 2021	Feb. 24, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 07, 2018	Feb. 13, 2017
Common Stock, Dividends, Per Share, Declared	$ 0.095	$ 0.075
Stock Repurchase Program, Authorized Amount							$ 300
Stock Repurchase Program, Period in Force						3 years
Stock Repurchase Program, Amount Repurchased			$ 133.5
Stock Repurchase Program, Remaining Authorized Repurchase Amount			$ 166.5
Preferred Stock, Shares Authorized			100,000,000	100,000,000
Preferred Stock, Shares Issued			0	0
Preferred Stock, Shares Outstanding			0	0
Payment, Tax Withholding, Share-based Payment Arrangement			$ 36.8	$ 36.1	$ 39.2
Dividend Paid [Member]
Dividends, Common Stock, Cash			$ 69.8	$ 57.6	$ 56.8
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			1,200,000	1,100,000	1,700,000

Revenue (Details)

Revenue (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)performance_obligation
Disaggregation of Revenue [Line Items]
Number of Types of Performance Obligations | performance_obligation	2
Contract with Customer, Refund Liability	$ 0
Revenue to be recognized rolling next two years	117
Revenue to be recognized rolling after two years	$ 136.5
Stand Ready Performance Obligations [Member]
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Good or Service	those that require us to stand ready to provide goods and services to a customer to use as and when requested (“Stand Ready Performance Obligations”)
Other Performance Obligations [Member]
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Good or Service	those that do not require us to stand ready (“Other Performance Obligations”)

Earnings per share (Details)

Earnings per share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average shares outstanding									191.4	189.9	187.8
Weighted Average Number Diluted Shares Outstanding Adjustment									1.6	2.3	4.1
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.16	$ 0.48	$ 0.61	$ 0.60	$ 0.47	$ 0.46	$ 0.30	$ 0.31	$ 1.86	$ 1.54	$ 1.59
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share									$ 5.39	$ 0.26	$ 0.26
Income from continuing operations	$ 34.4	$ 96.7	$ 122.1	$ 117.3	$ 92.5	$ 92.3	$ 58.2	$ 62.8	$ 370.5	$ 305.7	$ 304
Net Income (Loss) Attributable to Noncontrolling Interest									(15)	(12.4)	(5.1)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent									355.5	293.4	298.9
Discontinued operations, net of tax									1,031.7	49.8	48
Net income	$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	$ 1,387.1	$ 343.2	$ 346.9
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.16	$ 0.48	$ 0.61	$ 0.60	$ 0.47	$ 0.46	$ 0.30	$ 0.31	$ 1.84	$ 1.53	$ 1.56
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share									5.35	0.26	0.25
Earnings Per Share, Basic	5.31	0.60	0.67	0.67	0.53	0.54	0.36	0.37	$ 7.25	$ 1.81	$ 1.85
Weighted average dilutive shares outstanding									193	192.2	191.8
Earnings Per Share, Diluted	$ 5.27	$ 0.59	$ 0.66	$ 0.66	$ 0.53	$ 0.53	$ 0.36	$ 0.37	$ 7.19	$ 1.79	$ 1.81
Antidilutive weighted stock-based awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive stock outstanding									0.1	0.1	0.1
Contingently Issuable Performance-Based Stock Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive stock outstanding									0.1	1.3	1.1

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal
Current	$ 62	$ 55.9	$ 39.1
Deferred	(9.3)	(8)	(1.5)
State
Current	18.8	11.6	2.3
Deferred	0	(4.4)	(7.9)
Foreign
Current	67.3	52.4	52.1
Deferred	(7.9)	(23.7)	(13.6)
Total (benefit) provision for income taxes	$ 130.9	$ 83.7	$ 70.5

Income Taxes (Details 1)

Income Taxes (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 318.3	$ 258.5	$ 267.6
Income (Loss) from Continuing Operations before Income Taxes, Foreign	183.1	131	107
Income from continuing operations before income taxes	$ 501.4	$ 389.5	$ 374.5

Income Taxes (Details 3)

Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 105.3	$ 81.8	$ 78.6
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	15.5	8.4	(1)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	(6.8)	(9.4)	10.6
Effective Income Tax Rate Reconciliation, Deductible Expense, Share-based Compensation Cost, Amount	(10.8)	(25.3)	(37.8)
Foreign tax law changes	22.7	(0.1)	(6.5)
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions, Amount	4.6	8.3	1.9
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	(5)	8.3	(0.8)
Foreign withholding taxes	6.5	5.2	12.4
Income Tax Reconciliation Dividends and Tax Credits Foreign, Amount	(15.1)	4.9	12
U.S. Federal R&D tax credit	(6.4)	(4.4)	(2.9)
Nondeductible expenses	20	2.6	5.7
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	0.4	3.3	(1.7)
Total (benefit) provision for income taxes	$ 130.9	$ 83.7	$ 70.5
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	3.10%	2.20%	(0.30%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(1.30%)	(2.40%)	2.80%
Effective Income Tax Rate Reconciliation, Deductible Expense, Share-based Compensation Cost, Percent	(2.20%)	(6.50%)	(10.10%)
Foreign tax law changes	4.50%	0.00%	(1.70%)
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions, Percent	0.90%	2.10%	0.50%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(1.00%)	2.10%	(0.20%)
Foreign withholding taxes	1.30%	1.30%	3.30%
Effective Income Tax Rate Reconciliation Dividend and Tax Credits Foreign, Percent	(3.00%)	1.20%	3.20%
U.S. Federal R&D tax credit	(1.30%)	(1.10%)	(0.80%)
Nondeductible expenses	4.00%	0.70%	1.50%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	0.10%	0.90%	(0.50%)
Effective Income Tax Rate Reconciliation, Percent	26.10%	21.50%	18.80%
Components of Deferred Tax Assets [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other	$ 16.8	$ 18.5
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	22.5	15.1
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Legal Settlements	13.2	13.5
Deferred Tax Assets, Hedging Transactions	5.6	22.2
Deferred Tax Assets, Operating Loss Carryforwards	169	130.1
Deferred Tax Asset, Leases	41.5	17.5
Deferred Tax Assets, Other	38.4	16.9
Deferred Tax Assets, Gross, Total	307	233.8
Deferred Tax Assets, Valuation Allowance	(70.8)	(65.7)
Deferred Tax Assets, Net of Valuation Allowance, Total	236.2	168
Components of Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment	(947.5)	(520.5)
Deferred Tax Liability, Right of Use	(38.9)	(16.1)
Deferred Tax Liabilities, Undistributed Foreign Earnings	(10)	(10.8)
Deferred Tax Liabilities Finance Cost	(0.5)	(0.8)
Deferred Income Tax Liability, Investment in Affiliates	(8.9)	(4.6)
Deferred Tax Liabilities, Other	(8.1)	(8.4)
Deferred Tax Liabilities, Gross	(1,013.9)	(561.4)
Deferred Tax Liabilities, Net	$ (777.8)	$ (393.3)

Income Taxes (Details 4)

Income Taxes (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unrecognized tax benefits
Balance as of beginning of period	$ 36.9	$ 32.8	$ 19.6
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	5.6	6.2	0.5
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(4.5)	(3.6)	(0.5)
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	2.8	1.6	13.2
Reductions relating to settlement and lapse of statute	(0.4)	0	0
Balance as of December 31	45.8	36.9	32.8
Unrecognized Tax Benefits, Increase Resulting from Acquisition	$ 5.3	$ 0	$ 0

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent	(26.10%)	(21.50%)	(18.80%)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	$ 0.4	$ 3.3	$ (1.7)
Deferred Tax Assets, Net	10	3.4
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 70.8	65.7
Foreign credit carryforward expiration period	9 years
State loss carryforward expiration period	1 year
State credit carryforward expiration period	1 year
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 66.1
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	21.7
Deferred Tax Assets, Operating Loss Carryforwards	169	130.1
Unrecognized Tax Benefits	45.8	36.9	32.8	$ 19.6
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	28.3	18.5	$ 13.6
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 7.6	$ 4.8
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 12.9
Deferred Tax Asset, Interest Carryforward, Foreign	33.4
Deferred Tax Asset, Interest Carryforward, Domestic	$ 17.4
Minimum [Member]
Income Tax Contingency [Line Items]
Operating Loss Carry Forward expiration period	1 year
Foreign loss carryforward expiration period	1 year

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) shares in Millions, $ in Millions	12 Months Ended			66 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Stock Based Compensation (Textual) [Abstract]
Stock-based compensation expense	$ 70.1	$ 45.9	$ 55.3
Income tax benefit	10	8.4	8
Employee share purchase plan				1.1
Cash-settleable Liability Awards [Member]
Stock Based Compensation (Textual) [Abstract]
Stock-based compensation expense	$ 0.9	$ 1.6	$ 7
Employee Stock [Member]
Stock Based Compensation (Textual) [Abstract]
Shares authorized for grant	2.4
2012 Management Equity Plan [Member]
Stock Based Compensation (Textual) [Abstract]
Shares authorized for grant			10.1
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0
2015 Management Equity Plan [Member]
Stock Based Compensation (Textual) [Abstract]
Shares authorized for grant	12.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				4

2012 Plan (Details)

2012 Plan (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			66 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
2012 Management Equity Plan [Member] | Equity Option [Member]
Stock Options [Abstract]
Deferred Compensation Arrangement with Individual, Maximum Contractual Term	10 years
Percentage of Service Condition Awards Vesting	20.00%
Percentage of Grants Based on Service Condition Award Vesting Each Quarter	5.00%
Granted	0	0	0
Stock option activity consisted of the following:
Outstanding, shares, beginning balance	571,817
Granted	0	0	0
Exercise of stock options	329,283
Shares, forfeited	0
Shares, expired	0
Outstanding, shares, ending balance	242,534	571,817		571,817
Expected to vest as of December 31, 2021	0
Exercisable as of December 31, 2021	242,534
Options, Outstanding, Weighted Average Exercise Price	$ 8.05	$ 8.58		$ 8.58
Options, Grants in Period, Weighted Average Exercise Price	0
Options, Exercises in Period, Weighted Average Exercise Price	8.97
Options, Forfeited, Weighed Average Grant Date Fair Value	0
Options, Expirations in Period, Weighted Average Exercise Price	0
Weighted Exercise Price at Grant Expected to Vest	0
Weighted Average Exercise Price, Exercisable as of December 31, 2018	$ 8.05
Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 6 months	2 years 8 months 12 days
Weighted Average Remaining Contractual Term, Expected to vest as of December 31, 2018	0 years
Weighted Average Remaining Contractual Term, Exercisable as of December 31, 2018	1 year 6 months
Options, Outstanding, Intrinsic Value	$ 26.8	$ 51.8		$ 51.8
Aggregate Intrinsic Value Expected to Vest	0
Options, Exercisable, Intrinsic Value	26.8
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	0
Proceeds from Stock Options Exercised	2.9
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	7.7
Value of Options Exercised [Abstract]
Intrinsic value of options exercised	31.4	71.1	$ 106.4
Total fair value of options vested	$ 1.7	$ 4.5	$ 7.4
Stock Appreciation Rights [Abstract]
Deferred Compensation Arrangement with Individual, Maximum Contractual Term	10 years
2012 Management Equity Plan [Member] | Equity Option [Member] | Service Condition Option [Member]
Stock Options [Abstract]
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Service Condition Award	40.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Stock Appreciation Rights [Abstract]
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Service Condition Award	40.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
2012 Management Equity Plan [Member] | Equity Option [Member] | Market Condition Option [Member]
Stock Options [Abstract]
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Market Condition Award	60.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Stock Appreciation Rights [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Market Condition Award	60.00%
2015 Management Equity Plan [Member]
Stock Options [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock Appreciation Rights [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				(4,000,000)
2015 Management Equity Plan [Member] | Performance Shares [Member]
Stock Options [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock Appreciation Rights [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Stock-Based Compensation 2015 P

Stock-Based Compensation 2015 Plan (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			66 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
2015 Management Equity Plan [Member]
Restricted Stock Units [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted stock unit activity consisted of the following: [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				4,000,000
Restricted Stock [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				4,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock Units (RSUs) [Member]
Restricted stock unit activity consisted of the following: [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	1,200,000	1,100,000	1,700,000
Restricted Stock [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	1,200,000	1,100,000	1,700,000
Restricted Stock Units (RSUs) [Member] | 2015 Management Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	$ 15.9
Restricted Stock Units [Abstract]
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Service Condition Award	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted stock unit activity consisted of the following: [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,005,065	2,187,949		2,187,949
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,131,318
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	1,125,726
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	188,476
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Option, Expected to Vest	2,057,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 90.79	$ 78.85		$ 78.85
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	94.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	73.96
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	87.65
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Expected to Vest Weighted Average Grant Date Fair Value	$ 90.60
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	1 year	1 year
Weighted Average Remaining Contractual Term Expected to Vest, other than options	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 237.8	$ 217.1		$ 217.1
Other than intrinsic value expected to vest other than options	244
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	83.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	103.5
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 96.8
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 10 months 24 days
Restricted Stock [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 94.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	1,125,726
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 83.3
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 96.8
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 10 months 24 days
Performance Shares [Member] | 2015 Management Equity Plan [Member]
Restricted Stock Units [Abstract]
Percentage of Stock Options, RSUs and Stock Appreciation Rights Vest Granted Based on Performance Condition Award	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Minimum [Member] | Performance Shares [Member] | 2015 Management Equity Plan [Member]
Restricted Stock Units [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Maximum [Member] | Performance Shares [Member] | 2015 Management Equity Plan [Member]
Restricted Stock Units [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	200.00%

Other (Details)

Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Performance share unit activity associated with the acquisition of iovation [Abstract]
Share-based Payment Arrangement, Expense	$ 70.1	$ 45.9	$ 55.3
2012 Management Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			10,100,000
Equity Option [Member] | 2012 Management Equity Plan [Member]
Performance share unit activity associated with the acquisition of iovation [Abstract]
Granted	0	0	0

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financial instruments measured at fair value, on a recurring basis
Interest rate caps	$ 12.1	$ 0
Interest rate swaps (Notes 12 and 19)	34.5	89.7
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	$ 41.2
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment Income, Nonoperating
Neustar
Financial instruments measured at fair value, on a recurring basis
Contingent consideration	$ 14.8
Neustar Contingent Consideration Assumed
Financial instruments measured at fair value, on a recurring basis
Contingent consideration	2
Fair Value, Recurring [Member]
Financial instruments measured at fair value, on a recurring basis
Interest rate caps	12.1
Debt Securities, Available-for-sale, Current	3.1	3.2
Total	15.2	3.2
Interest rate swaps (Notes 12 and 19)	34.5	89.7
Contingent consideration	16.8	41.4
Total	63.2	131.1
Fair Value, Recurring [Member] | Put Option
Financial instruments measured at fair value, on a recurring basis
Derivative Liability	11.9
Level 1 [Member] | Fair Value, Recurring [Member]
Financial instruments measured at fair value, on a recurring basis
Interest rate caps	0
Debt Securities, Available-for-sale, Current	0	0
Total	0	0
Interest rate swaps (Notes 12 and 19)	0	0
Contingent consideration	0	0
Total	0	0
Level 1 [Member] | Fair Value, Recurring [Member] | Put Option
Financial instruments measured at fair value, on a recurring basis
Derivative Liability	0
Level 2 [Member] | Fair Value, Recurring [Member]
Financial instruments measured at fair value, on a recurring basis
Interest rate caps	12.1
Debt Securities, Available-for-sale, Current	3.1	3.2
Total	15.2	3.2
Interest rate swaps (Notes 12 and 19)	34.5	89.7
Contingent consideration	0	0
Total	34.5	89.7
Level 2 [Member] | Fair Value, Recurring [Member] | Put Option
Financial instruments measured at fair value, on a recurring basis
Derivative Liability	0
Level 3 [Member] | Fair Value, Recurring [Member]
Financial instruments measured at fair value, on a recurring basis
Interest rate caps	0
Debt Securities, Available-for-sale, Current	0	0
Total	0	0
Interest rate swaps (Notes 12 and 19)	0	0
Contingent consideration	16.8	41.4
Total	28.7	$ 41.4
Level 3 [Member] | Fair Value, Recurring [Member] | Put Option
Financial instruments measured at fair value, on a recurring basis
Derivative Liability	$ 11.9

Reportable Segments - Segment F

Reportable Segments - Segment Financial Information (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021USD ($)	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2021USD ($)segmentSegment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Revenue	$ 789.8	$ 743.4	$ 728.2	$ 698.9	$ 653.3	$ 650.5	$ 587.1	$ 639.6	$ 2,960.2	$ 2,530.6	$ 2,463.2
Number of Reportable Segments | Segment									3
Number of Corporate Units | segment									1
Net income	$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	$ 1,387.1	343.2	346.9
Segments Adjusted EBITDA									1,278.8	1,061.2	1,080.2
Adjusted EBITDA Adjustment - Corporate Expense									(121.9)	(107.6)	(114.3)
Adjusted EBITDA Adjustment - Net interest expense									(109.2)	(120.6)	(166.2)
Adjusted EBITDA Adjustment - Depreciation and Amortization									(377)	(346.8)	(338.6)
Adjusted EBITDA Adjustment - Acquisition Related Revenue Adjustment									0	0	(5.6)
Adjusted EBITDA Adjustment - Stockbased Compensation									(70.1)	(45.9)	(55.3)
Adjusted EBITDA Adjustment - Mergers and Acquisition									(52.6)	(8.5)	(1.1)
Adjusted EBITDA Adjustment - Accelerated Technology									(42.3)	(19.3)	0
Adjusted EBITDA Adjustment - Other									(19.4)	(35.5)	(29.7)
Net Income (Loss) Attributable to Noncontrolling Interest									15	12.4	5.1
Adjusted EBITDA Adjustment - Total									(777.4)	(671.8)	(705.7)
Income before income taxes									501.4	389.5	374.5
U.S. Markets
Segment Reporting Information [Line Items]
Revenue									1,791	1,510.7	1,416.7
Segments Adjusted EBITDA									715.6	593.9	573.7
International [Member]
Segment Reporting Information [Line Items]
Revenue									701.9	582.7	623.5
Segments Adjusted EBITDA									300.1	219.8	258.1
Consumer Interactive [Member]
Segment Reporting Information [Line Items]
Revenue									545.8	513.1	497.8
Segments Adjusted EBITDA									263.1	247.6	248.4
Segment Revenues Gross Intersegment [Domain]
Segment Reporting Information [Line Items]
Revenue									3,038.7	2,606.5	2,538
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue									(78.4)	(75.9)	(74.8)
Intersegment Eliminations [Member] | U.S. Markets
Segment Reporting Information [Line Items]
Revenue									(70.5)	(68.9)	(68.7)
Intersegment Eliminations [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue									(5.9)	(5.2)	(5.1)
Intersegment Eliminations [Member] | Consumer Interactive [Member]
Segment Reporting Information [Line Items]
Revenue									(2)	(1.7)	(1)
CANADA | International [Member]
Segment Reporting Information [Line Items]
Revenue									126.9	108	104.1
Asia Pacific [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue									62.7	56.2	59.1
UNITED KINGDOM | International [Member]
Segment Reporting Information [Line Items]
Revenue									216.5	183.1	186.7
Africa [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue									59.5	49	61.2
INDIA | International [Member]
Segment Reporting Information [Line Items]
Revenue									133.1	100	108.1
Latin America [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue									103.2	86.5	104.2
Financial Services [Member] | U.S. Markets
Segment Reporting Information [Line Items]
Revenue									$ 1,078.9	939.6	849
Financial Services [Member] | U.S. Markets | Geographic Concentration Risk | Revenue Benchmark
Segment Reporting Information [Line Items]
Concentration Risk, Percentage									60.20%
Emerging Verticals [Member] | U.S. Markets
Segment Reporting Information [Line Items]
Revenue									$ 712.1	$ 571.1	$ 567.7

Reportable Segments - Adjusted

Reportable Segments - Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Unrealized Gain on Securities											$ 31.2
Net income	$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	$ 1,387.1	$ 343.2	346.9
Other income and expense, net, included earnings (losses) from equity method investments
Other income and expense, net from equity method investments									12	8.9	13.2
Discontinued operations, net of tax									1,031.7	49.8	48
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent									355.5	293.4	298.9
Total (benefit) provision for income taxes									130.9	83.7	70.5
Depreciation and amortization									377	346.8	338.6
Recovery of Direct Costs											0.5
Business Combination, Integration Related Costs	9.1
Unrealized Loss on Securities											10
Business Combination, Acquisition Related Costs	(27.7)	$ (18.3)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings										(1.7)
Selling, general and administrative									(943.9)	(829.7)	(777.4)
Loan Processing Fee											(13)
Write off of Deferred Debt Issuance Cost	$ (17.4)								(17.9)	(0.9)	(2)
Reimbursement									(1.1)	(0.1)
Gain (Loss) on Sale of Assets and Asset Impairment Charges									11.9	7.5	17.5
Unrealized Gain (Loss) on Investments									12.5	2.5
Cost-method Investments
Other income and expense, net, included earnings (losses) from equity method investments
Realized Investment Gains (Losses)									0.5
Unrealized Gain (Loss) on Investments										(4.8)
U.S. Markets
Other income and expense, net, included earnings (losses) from equity method investments
Other income and expense, net from equity method investments									2.4	2.6	2.6
Depreciation and amortization									222	205.8	201.4
International [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Other income and expense, net from equity method investments									9.6	6.4	10.6
Depreciation and amortization									132.4	120.6	118.6
Neustar
Other income and expense, net, included earnings (losses) from equity method investments
Business Combination, Acquisition Related Costs									(29.7)
Tru Optik
Other income and expense, net, included earnings (losses) from equity method investments
Unrealized Gain (Loss) on Investments									(1.1)	8.1
Acquisition-related Costs [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Business Combination, Acquisition Related Costs									(48.1)	(7)	(2.4)
Acquisition-related Costs [Member] | Callcredit [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Business Combination, Integration Related Costs										7.5	15.8
Acquisition-related Costs [Member] | Neustar
Other income and expense, net, included earnings (losses) from equity method investments
Business Combination, Integration Related Costs									9.1
UNITED KINGDOM
Other income and expense, net, included earnings (losses) from equity method investments
Impairment of Long-Lived Assets Held-for-use											(3.7)
Gain (Loss) on Sale of Assets and Asset Impairment Charges										1.8
Fair Value, Inputs, Level 3 [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings									(8.4)		(0.8)
Adjustments to EBITDA [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Other non-operating expense (income)									(3.7)	(1.4)	(1.3)
Fraudulent Incident [Member]
Other income and expense, net, included earnings (losses) from equity method investments
Selling, general and administrative											$ (13.5)
Other Income									$ 3.5	$ 1.5

Reportable Segments - Total Ass

Reportable Segments - Total Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Total assets, by segment
Total assets	$ 12,635	$ 7,311.6
Operating Segments
Total assets, by segment
Total assets	11,078.2	6,615.9
Corporate
Total assets, by segment
Total assets	1,556.8	267.5
Discontinued operations
Total assets, by segment
Total assets	0	428.1
U.S. Markets | Operating Segments
Total assets, by segment
Total assets	6,934.8	3,182.5
International [Member] | Operating Segments
Total assets, by segment
Total assets	2,921.2	2,974.5
Consumer Interactive [Member] | Operating Segments
Total assets, by segment
Total assets	$ 1,222.3	$ 458.9

Reportable Segments - Capital E

Reportable Segments - Capital Expenditures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid for capital expenditures, by segment
Payments to acquire property, plant, and equipment	$ 224.2	$ 205.6	$ 188.4
U.S. Markets
Cash paid for capital expenditures, by segment
Payments to acquire property, plant, and equipment	145.3	119.1	112.1
International [Member]
Cash paid for capital expenditures, by segment
Payments to acquire property, plant, and equipment	65.1	68.2	59.8
Consumer Interactive [Member]
Cash paid for capital expenditures, by segment
Payments to acquire property, plant, and equipment	11.8	12.8	13.4
Corporate [Member]
Cash paid for capital expenditures, by segment
Payments to acquire property, plant, and equipment	$ 2	$ 5.5	$ 3.2

Reportable Segments - Depreciat

Reportable Segments - Depreciation and Amortization Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Depreciation and amortization expense of continuing operations, by segment
Depreciation and amortization expense of continuing operations, by segment	$ 377	$ 346.8	$ 338.6
U.S. Markets
Depreciation and amortization expense of continuing operations, by segment
Depreciation and amortization expense of continuing operations, by segment	222	205.8	201.4
International [Member]
Depreciation and amortization expense of continuing operations, by segment
Depreciation and amortization expense of continuing operations, by segment	132.4	120.6	118.6
Consumer Interactive [Member]
Depreciation and amortization expense of continuing operations, by segment
Depreciation and amortization expense of continuing operations, by segment	16.8	14.6	13.3
Corporate [Member]
Depreciation and amortization expense of continuing operations, by segment
Depreciation and amortization expense of continuing operations, by segment	$ 5.7	$ 5.7	$ 5.2

Reportable Segments - Percentag

Reportable Segments - Percentage of Revenue (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Domestic
Revenue based on the country
Revenue earned	76.00%	77.00%	75.00%
International
Revenue based on the country
Revenue earned	24.00%	23.00%	25.00%

Reportable Segments - Percent_2

Reportable Segments - Percentage of Long-Lived Assets (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Domestic
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset
Long-lived assets, other than financial instruments and deferred tax assets	76.00%	59.00%	59.00%
International
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset
Long-lived assets, other than financial instruments and deferred tax assets	24.00%	41.00%	41.00%

Reportable Segments (Details Te

Reportable Segments (Details Textual) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2021USD ($)segmentSegment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Reportable Segments (Textual) [Abstract]
Number of reportable segments | segment		3
Business Combination, Integration Related Costs	$ 9.1
Unrealized Loss on Securities				$ 10
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings			$ (1.7)
Gain (Loss) on Sale of Assets and Asset Impairment Charges		$ 11.9	7.5	17.5
Unrealized Gain on Securities				31.2
Reimbursement		$ (1.1)	(0.1)
Number of Reportable Segments | Segment		3
UNITED KINGDOM
Reportable Segments (Textual) [Abstract]
Gain (Loss) on Sale of Assets and Asset Impairment Charges			1.8
Callcredit [Member] | Acquisition-related Costs [Member]
Reportable Segments (Textual) [Abstract]
Business Combination, Integration Related Costs			$ 7.5	$ 15.8

Commitments (Details)

Commitments (Details) $ in Millions	Dec. 31, 2021USD ($)
Summary of future minimum payments for noncancelable operating leases, purchase obligations and other liabilities
Operating Leases, 2022	$ 42.4
Operating Leases, 2023	35.8
Operating Leases, 2024	24.1
Operating Leases, 2025	16.7
Operating Leases, 2026	13.3
Operating Leases, Thereafter	46.8
Purchase Obligations, 2022	141.1
Purchase Obligations, 2023	93.3
Purchase Obligations, 2024	55.9
Purchase Obligations, 2025	43.2
Purchase Obligations, 2026	0.8
Purchase Obligations, Thereafter	0.3
Totals, Purchase Obligations	334.6
Total, 2022	183.5
Total, 2023	129.1
Total, 2024	80
Total, 2025	59.9
Total, 2026	14.1
Total, Thereafter	47.1
Lessee, Operating Lease, Liability, to be Paid	179.1
Totals	$ 513.7

Commitments (Details Textual)

Commitments (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Commitments [Abstract]
Trade accounts payable	$ 270.2	$ 188.4
Minimum Payments Licensing Agreements	$ 0

Contingencies (Details)

Contingencies (Details) $ in Millions	Jun. 21, 2017USD ($)Segment	Jul. 31, 2014Segment	Dec. 31, 2021USD ($)	Jun. 25, 2021	Dec. 31, 2020USD ($)
Ramirez v. Trans Union LLC [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs | Segment	8,185	8,185
Loss Contingency, Percentage Of Plaintiffs That Suffered Concrete Harm				23.00%
Consumer Financial Protection Bureau
Loss Contingencies [Line Items]
Loss Contingency Accrual			$ 26.5
Judicial Ruling [Member] | Ramirez v. Trans Union LLC [Member] | Statutory and Punitive Damages
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	$ 60
Other Liabilities [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual			$ 85.6		$ 76

Quarterly Financial Data (Una_3

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Data [Abstract]
Revenue	$ 789.8	$ 743.4	$ 728.2	$ 698.9	$ 653.3	$ 650.5	$ 587.1	$ 639.6	$ 2,960.2	$ 2,530.6	$ 2,463.2
Summary of quarterly financial data
Operating income (loss)	114	169.7	200.4	163.6	128.8	144.9	106	120.6	647.7	500.3	541.7
Income from continuing operations	34.4	96.7	122.1	117.3	92.5	92.3	58.2	62.8	370.5	305.7	304
Other comprehensive income:	1,020.5	118.2	132.9	130.6	104.5	106.7	70	74.3	1,402.2	355.6	352
Net income (loss) attributable to TransUnion Intermediary	$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	$ 1,387.1	$ 343.2	$ 346.9
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.16	$ 0.48	$ 0.61	$ 0.60	$ 0.47	$ 0.46	$ 0.30	$ 0.31	$ 1.86	$ 1.54	$ 1.59
Earnings Per Share, Basic	5.31	0.60	0.67	0.67	0.53	0.54	0.36	0.37	7.25	1.81	1.85
Earnings Per Share, Diluted	5.27	0.59	0.66	0.66	0.53	0.53	0.36	0.37	7.19	1.79	1.81
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.16	$ 0.48	$ 0.61	$ 0.60	$ 0.47	$ 0.46	$ 0.30	$ 0.31	$ 1.84	$ 1.53	$ 1.56

Quarterly Financial Data (Una_4

Quarterly Financial Data (Unaudited) (Details 1) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Data [Abstract]
Revenue	$ 789.8	$ 743.4	$ 728.2	$ 698.9	$ 653.3	$ 650.5	$ 587.1	$ 639.6	$ 2,960.2	$ 2,530.6	$ 2,463.2
Summary of quarterly financial data
Operating income (loss)	114	169.7	200.4	163.6	128.8	144.9	106	120.6	647.7	500.3	541.7
Income from continuing operations	34.4	96.7	122.1	117.3	92.5	92.3	58.2	62.8	370.5	305.7	304
Other comprehensive income:	1,020.5	118.2	132.9	130.6	104.5	106.7	70	74.3	1,402.2	355.6	352
Net income (loss) attributable to TransUnion Intermediary	$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	$ 1,387.1	$ 343.2	$ 346.9
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.16	$ 0.48	$ 0.61	$ 0.60	$ 0.47	$ 0.46	$ 0.30	$ 0.31	$ 1.86	$ 1.54	$ 1.59
Earnings Per Share, Basic	5.31	0.60	0.67	0.67	0.53	0.54	0.36	0.37	7.25	1.81	1.85
Income (Loss) from Continuing Operations, Per Diluted Share	0.16	0.48	0.61	0.60	0.47	0.46	0.30	0.31	1.84	1.53	1.56
Earnings Per Share, Diluted	$ 5.27	$ 0.59	$ 0.66	$ 0.66	$ 0.53	$ 0.53	$ 0.36	$ 0.37	$ 7.19	$ 1.79	$ 1.81
Unrealized Gain On Investment	$ 12.5								$ 12.5	$ 2.5

Quarterly Financial Data (Una_5

Quarterly Financial Data (Unaudited) (Details Textual) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Data (Textual) [Abstract]
Business combination, acquisition related costs	$ 27.7	$ 18.3
Write off of Deferred Debt Issuance Cost	17.4				$ 17.9	$ 0.9	$ 2
Business Combination, Integration Related Costs	9.1
Unrealized Gain on Securities							$ 31.2
Certain Legal Expenses
Quarterly Financial Data (Textual) [Abstract]
Loss Contingency Accrual, Provision	$ 21.6	12	$ 32.4	$ 30.5	$ (1.2)	$ (34.7)
Healthcare Business
Quarterly Financial Data (Textual) [Abstract]
Realized Investment Gains (Losses)		$ 12.9

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Component accumulated other comprehensive income (loss)
Accumulated other comprehensive income (loss), total	$ (285.4)	$ (272.1)	$ (251.6)	$ (282.7)
Change	(13.3)	(20.5)	31.1
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	0	0.2	0
Accumulated other comprehensive income (loss), total	(285.4)	(272.1)	(251.6)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(63.8)	9.2	65
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	50.5	(29.9)	(33.9)
Foreign Currency Translation Adjustment
Component accumulated other comprehensive income (loss)
Accumulated other comprehensive income (loss), total	(269.2)	(205.4)	(214.6)	(279.6)
Accumulated other comprehensive income (loss), total	(269.2)	(205.4)	(214.6)
Net Unrealized Gain/(Loss) On Hedges
Component accumulated other comprehensive income (loss)
Accumulated other comprehensive income (loss), total	(16.6)	(67.1)	(37.2)	(3.3)
Accumulated other comprehensive income (loss), total	(16.6)	(67.1)	(37.2)
Net Unrealized Gain/(Loss) On Available-for-sale Securities
Component accumulated other comprehensive income (loss)
Accumulated other comprehensive income (loss), total	0.4	0.4	0.2	$ 0.2
Accumulated other comprehensive income (loss), total	$ 0.4	$ 0.4	$ 0.2

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Millions	Feb. 22, 2022	Jan. 31, 2022	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Write off of Deferred Debt Issuance Cost				$ 17.4	$ 17.9	$ 0.9	$ 2
Argus Information and Advisory Services, Inc. | Subsequent Event
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	$ 515
Senior Secured Term Loan B-6 | Subsequent Event
Subsequent Event [Line Items]
Payment for Debt Extinguishment or Debt Prepayment Cost		$ 400
Senior Secured Term Loan B-6 | Unamortized Original Issue Discount | Subsequent Event
Subsequent Event [Line Items]
Write off of Deferred Debt Issuance Cost			$ 1
Senior Secured Term Loan B-6 | Deferred Fees | Subsequent Event
Subsequent Event [Line Items]
Write off of Deferred Debt Issuance Cost			$ 5.5

Condensed Financial Informati_2

Condensed Financial Information of TransUnion (Details) - USD ($) $ / shares in Units, $ in Millions	May 11, 2021	Feb. 24, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Other current assets			$ 231.6				$ 156.1				$ 231.6	$ 156.1
Total current assets			2,632				1,469.7				2,632	1,469.7
Investment in TransUnion Intermediate			46.1				46.1				46.1	46.1
Other assets			459				222.5				459	222.5
Total assets			12,635				7,311.6				12,635	7,311.6
Current liabilities:
Trade accounts payable			270.2				188.4				270.2	188.4
Other current liabilities			972.2				405.2				972.2	405.2
Total current liabilities			1,357				669.8				1,357	669.8
Other liabilities			232.9				210.2				232.9	210.2
Total liabilities			8,628.8				4,675.5				8,628.8	4,675.5
Stockholders’ equity:
Common Stock, Value, Issued			2				2				2	2
Additional paid-in capital			2,188.9				2,088.1				2,188.9	2,088.1
Treasury Stock, Value			(252)				(215.2)				(252)	(215.2)
Retained earnings			2,254.6				937.4				2,254.6	937.4
Accumulated other comprehensive loss			(285.4)				(272.1)				(285.4)	(272.1)	$ (251.6)	$ (282.7)
Total stockholders’ equity			4,006.2				2,636.1				4,006.2	2,636.1
Total liabilities and stockholders’ equity			12,635				7,311.6				12,635	7,311.6
Statement of Income
Revenue			789.8	$ 743.4	$ 728.2	$ 698.9	653.3	$ 650.5	$ 587.1	$ 639.6	2,960.2	2,530.6	2,463.2
Operating expenses
Selling, general and administrative											943.9	829.7	777.4
Total operating expenses											2,312.5	2,030.4	1,921.5
Operating income			114	169.7	200.4	163.6	128.8	144.9	106	120.6	647.7	500.3	541.7
Non-operating income and (expense)
Earnings from equity method investments											12	8.9	13.2
Other income and (expense), net											(49.2)	0.9	(14.2)
Total non-operating income and (expense)											(146.3)	(110.8)	(167.2)
Income before income taxes											501.4	389.5	374.5
Provision for income taxes											(130.9)	(83.7)	(70.5)
Net income			$ 1,017.4	$ 114.2	$ 127.6	$ 127.9	$ 101.7	$ 102.8	$ 68.5	$ 70.2	1,387.1	343.2	346.9
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax											(66.4)	8.9	66.1
Benefit (expense) for income taxes											0.3	0.8	(0.5)
Foreign currency translation, net											(66.1)	9.7	65.6
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax											0	0	1
Net unrealized gain											0	0.3	0
Expense for income taxes											0	(0.1)	0
Available-for-sale securities, net											0	0.2	0
Total other comprehensive income (loss), net of tax											(15.6)	(20)	31.7
Comprehensive income (loss) attributable to TransUnion											1,373.9	322.7	378
Statement of Cash Flows
Net cash provided by (Used in) operating activities											808.3	787.6	776.9
Cash flows from investing activities:
Cash (used in) provided by investing activities											(2,212.9)	(267.2)	(203.9)
Cash flows from financing activities:
Proceeds from issuance of common stock and exercise of stock options											21.9	22.9	24.4
Dividends to shareholders											(69.8)	(57.6)	(56.8)
Cash provided by (used in) financing activities											$ 2,762.3	$ (296.9)	(486.7)
Common Stock, Shares Authorized			1,000,000,000				1,000,000,000				1,000,000,000	1,000,000,000
Common stock, shares issued			197,400,000				195,700,000				197,400,000	195,700,000
Common stock, shares outstanding			191,800,000				190,500,000				191,800,000	190,500,000
Treasury stock at cost, shares			5,600,000				5,200,000				5,600,000	5,200,000
Common Stock, Dividends, Per Share, Declared	$ 0.095	$ 0.075
Common Stock, Par or Stated Value Per Share			$ 0.01				$ 0.01				$ 0.01	$ 0.01
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax											$ (16.8)	$ 9.5	11.5
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax											$ 50.5	$ (29.9)	(33.9)
Preferred Stock, Shares Authorized			100,000,000				100,000,000				100,000,000	100,000,000
Preferred Stock, Shares Issued			0				0				0	0
Preferred Stock, Shares Outstanding			0				0				0	0
Interest Rate Cap [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax											$ 0	$ 4.1	(11)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax												2.8	(8.2)
Interest Rate Swap [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax											67.3	(43.5)	(35.4)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax											50.5	(32.7)	(26.7)
Dividend Paid [Member]
Dividends, Common Stock, Cash											69.8	57.6	56.8
TransUnion Parent [Member]
Current assets:
Other current assets			$ 0.4				$ 0.3				0.4	0.3
Total current assets			0.4				0.3				0.4	0.3
Investment in TransUnion Intermediate			4,217.6				2,748.7				4,217.6	2,748.7
Other assets			6.1				6.3				6.1	6.3
Total assets			4,224.1				2,755.3				4,224.1	2,755.3
Current liabilities:
Trade accounts payable			0.3				0				0.3	0
Due to TransUnion Intermediate			312				211.4				312	211.4
Other current liabilities			1.3				1.4				1.3	1.4
Total current liabilities			313.6				212.8				313.6	212.8
Other liabilities			2.4				2.3				2.4	2.3
Total liabilities			316				215.1				316	215.1
Stockholders’ equity:
Common Stock, Value, Issued			2				2				2	2
Additional paid-in capital			2,188.9				2,088.1				2,188.9	2,088.1
Treasury Stock, Value			(252)				(215.2)				(252)	(215.2)
Retained earnings			2,254.6				937.4				2,254.6	937.4
Accumulated other comprehensive loss			(285.4)				(272.1)				(285.4)	(272.1)
Total stockholders’ equity			3,908.1				2,540.2				3,908.1	2,540.2
Total liabilities and stockholders’ equity			$ 4,224.1				$ 2,755.3				4,224.1	2,755.3
Statement of Income
Revenue											0	0	0
Operating expenses
Selling, general and administrative											3.5	3.1	3.5
Total operating expenses											3.5	3.1	3.5
Operating income											(3.5)	(3.1)	(3.5)
Non-operating income and (expense)
Earnings from equity method investments											1,388.6	345	349.2
Other income and (expense), net											0	0.2	0
Total non-operating income and (expense)											1,388.6	345.2	349.2
Income before income taxes											1,385.1	342.1	345.7
Provision for income taxes											2	1.1	1.2
Net income											1,387.1	343.2	346.9
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax											(64.1)	8.4	65.5
Benefit (expense) for income taxes											0.3	0.8	(0.5)
Foreign currency translation, net											(63.8)	9.2	65
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax											0	0	1
Net unrealized gain											0	0.3	0
Expense for income taxes											0	(0.1)	0
Available-for-sale securities, net											0	0.2	0
Total other comprehensive income (loss), net of tax											(13.3)	(20.5)	31.1
Comprehensive income (loss) attributable to TransUnion											1,373.8	322.7	378
Statement of Cash Flows
Net cash provided by (Used in) operating activities											84.7	70.8	71.7
Cash flows from investing activities:
Cash (used in) provided by investing activities											0	0	0
Cash flows from financing activities:
Proceeds from issuance of common stock and exercise of stock options											21.9	22.9	24.4
Dividends to shareholders											(69.8)	(57.6)	(56.8)
Treasury stock purchased											(36.8)	(36.1)	(39.3)
Cash provided by (used in) financing activities											(84.7)	(70.8)	(71.7)
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations													0	$ 0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax											(16.8)	9.5	11.5
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax											50.5	(29.9)	(33.9)
TransUnion Parent [Member] | Interest Rate Cap [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax											0	4.1	(11)
TransUnion Parent [Member] | Interest Rate Swap [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax											$ 67.3	$ (43.5)	$ (35.4)

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement in valuation allowances and reserves
Balance at Beginning of Year	$ 65.7
Balance at End of Year	70.8	$ 65.7
Allowance for deferred tax assets [Member]
Movement in valuation allowances and reserves
Balance at Beginning of Year	65.7	53.3	$ 51.9
Charged to Costs and Expenses	3.8	12.6	14.1
Charged to Other Accounts	14.4	3.7	0
Deductions	(13.1)	(3.8)	(12.7)
Balance at End of Year	$ 70.8	$ 65.7	$ 53.3