Dayforce (DAY) 10-Q 2 Nov 22 2022 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Oct. 27, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Trading Symbol	CDAY
Title of 12(b) Security	Common stock, $0.01 par value
Security Exchange Name	NYSE
Entity Registrant Name	Ceridian HCM Holding Inc.
Entity Central Index Key	0001725057
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-38467
Entity Incorporation State Country Code	DE
Entity Tax Identification Number	46-3231686
Entity Address Address Line1	3311 East Old Shakopee Road
Entity Address City Or Town	Minneapolis
Entity Address State Or Province	MN
Entity Address Postal Zip Code	55425
City Area Code	952
Local Phone Number	853-8100
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		153,594,867

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and equivalents	$ 408.4	$ 367.5
Restricted cash	0.8	1.9
Trade and other receivables, net	155.4	146.3
Prepaid expenses and other current assets	107.3	92.6
Total current assets before customer funds	671.9	608.3
Customer funds	4,335.3	3,535.8
Total current assets	5,007.2	4,144.1
Right of use lease asset	27.5	29.4
Property, plant, and equipment, net	144.7	128.2
Goodwill	2,261.8	2,323.6
Other intangible assets, net	298.4	332.5
Other assets	266.8	208.4
Total assets	8,006.4	7,166.2
Current liabilities:
Current portion of long-term debt	8.1	8.3
Current portion of long-term lease liabilities	14.9	11.3
Accounts payable	56.7	51.7
Deferred revenue	42.6	48.7
Employee compensation and benefits	72.6	77.3
Other accrued expenses	24.2	24.7
Total current liabilities before customer funds obligations	219.1	222
Customer funds obligations	4,456.6	3,519.9
Total current liabilities	4,675.7	3,741.9
Long-term debt, less current portion	1,214.1	1,124.4
Employee benefit plans	19.3	20.7
Long-term lease liabilities, less current portion	23	32.7
Other liabilities	23.1	19
Total liabilities	5,955.2	4,938.7
Commitments and contingencies (Note 14)
Stockholders’ equity:
Common stock, $0.01 par, 500,000,000 shares authorized, 153,526,336 and 151,995,031 shares issued and outstanding, respectively	1.5	1.5
Additional paid in capital	2,918.4	2,860
Accumulated deficit	(367.4)	(309.2)
Accumulated other comprehensive loss	(501.3)	(324.8)
Total stockholders’ equity	2,051.2	2,227.5
Total liabilities and equity	$ 8,006.4	$ 7,166.2

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	500,000,000	500,000,000
Common Stock, shares issued	153,526,336	151,995,031
Common Stock, shares outstanding	153,526,336	151,995,031

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Total revenue	$ 315.6	$ 257.2	$ 910.1	$ 742.1
Cost of revenue:
Recurring	77.1	66	234.4	191.1
Professional services and other	61	48.9	172.6	140.9
Product development and management	44.8	36.6	125	94.2
Depreciation and amortization	13.7	12.6	40	37.5
Total cost of revenue	196.6	164.1	572	463.7
Gross profit	119	93.1	338.1	278.4
Selling, general, and administrative	122.7	109.1	367.2	316.5
Operating loss	(3.7)	(16)	(29.1)	(38.1)
Interest expense, net	7.4	10	19.9	25.5
Other expense, net	5.9	3.4	11.4	16.2
Loss before income taxes	(17)	(29.4)	(60.4)	(79.8)
Income tax expense (benefit)	4	(8.5)	7.8	(13.9)
Net loss	$ (21)	$ (20.9)	$ (68.2)	$ (65.9)
Net loss per share:
Basic	$ (0.14)	$ (0.14)	$ (0.45)	$ (0.44)
Diluted	$ (0.14)	$ (0.14)	$ (0.45)	$ (0.44)
Weighted-average shares outstanding:
Basic	153,184,846	150,450,595	152,691,008	149,083,666
Diluted	153,184,846	150,450,595	152,691,008	149,083,666
Recurring [Member]
Revenue:
Total revenue	$ 263.8	$ 215	$ 762.8	$ 619.1
Professional Services and Other [Member]
Revenue:
Total revenue	$ 51.8	$ 42.2	$ 147.3	$ 123

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss		$ (21)	$ (20.9)	$ (68.2)	$ (65.9)
Items of other comprehensive loss before income taxes:
Change in foreign currency translation adjustment		(48.5)	(19.7)	(80.3)	4.3
Change in unrealized loss from invested customer funds		(33)	(8.4)	(139.9)	(30.5)
Change in pension liability adjustment	[1]	2.9	3.8	8.9	11.4
Other comprehensive loss before income taxes		(78.6)	(24.3)	(211.3)	(14.8)
Income tax benefit, net		(8)	(1.3)	(34.8)	(5.1)
Other comprehensive loss after income taxes		(70.6)	(23)	(176.5)	(9.7)
Comprehensive loss		$ (91.6)	$ (43.9)	$ (244.7)	$ (75.6)
[1] The amount of the pension liability adjustment recognized in the condensed consolidated statements of operations within other expense, net was $ 2.9 million and $ 3.8 million during the three months ended September 30, 2022, and 2021, respectively, and $ 8.7 million and $ 11.3 million during the nine months ended September 30, 2022, and 2021 , respectively.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Other Expense, Net [Member]
Pension liability adjustment	$ 2.9	$ 3.8	$ 8.7	$ 11.3

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid In Capital [Member]	Additional Paid In Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2020	$ 2,098.2		$ 1.5	$ 2,606.5		$ (233.8)		$ (276)
Balance, shares at Dec. 31, 2020			148,571,412
Net loss	(19.2)					(19.2)
Issuance of common stock under share-based compensation plans	11.3			11.3
Issuance of common stock under share-based compensation plans, shares			341,975
Share-based compensation	22.8			22.8
Equity component of convertible senior notes	77.7			77.7
Purchase of capped calls related to convertible senior notes	(33)			(33)
Foreign currency translation	11							11
Change in unrealized (loss) gain, net of tax	(12.3)							(12.3)
Change in pension liability adjustment, net of tax	2.8							2.8
Ending balance at Mar. 31, 2021	2,159.3		$ 1.5	2,685.3		(253)		(274.5)
Balance, shares at Mar. 31, 2021			148,913,387
Beginning balance at Dec. 31, 2020	2,098.2		$ 1.5	2,606.5		(233.8)		(276)
Balance, shares at Dec. 31, 2020			148,571,412
Net loss	(65.9)
Ending balance at Sep. 30, 2021	2,221.8		$ 1.5	2,805.7		(299.7)		(285.7)
Balance, shares at Sep. 30, 2021			151,165,177
Beginning balance at Mar. 31, 2021	2,159.3		$ 1.5	2,685.3		(253)		(274.5)
Balance, shares at Mar. 31, 2021			148,913,387
Net loss	(25.8)					(25.8)
Issuance of common stock under share-based compensation plans	23.1			23.1
Issuance of common stock under share-based compensation plans, shares			838,862
Share-based compensation	31.4			31.4
Foreign currency translation	13							13
Change in unrealized (loss) gain, net of tax	(4)							(4)
Change in pension liability adjustment, net of tax	2.8							2.8
Ending balance at Jun. 30, 2021	2,199.8		$ 1.5	2,739.8		(278.8)		(262.7)
Balance, shares at Jun. 30, 2021			149,752,249
Net loss	(20.9)					(20.9)
Issuance of common stock under share-based compensation plans	36.5			36.5
Issuance of common stock under share-based compensation plans, shares			1,412,928
Share-based compensation	29.4			29.4
Foreign currency translation	(19.7)							(19.7)
Change in unrealized (loss) gain, net of tax	(6.1)							(6.1)
Change in pension liability adjustment, net of tax	2.8							2.8
Ending balance at Sep. 30, 2021	2,221.8		$ 1.5	2,805.7		(299.7)		(285.7)
Balance, shares at Sep. 30, 2021			151,165,177
Beginning balance at Dec. 31, 2021	$ 2,227.5	$ (67.7)	$ 1.5	2,860	$ (77.7)	(309.2)	$ 10	(324.8)
Balance, shares at Dec. 31, 2021			151,995,031
Accounting Standards Update [Extensible List]	ASU 2020-06 [Member]
Net loss	$ (27.4)					(27.4)
Issuance of common stock under share-based compensation plans	6			6
Issuance of common stock under share-based compensation plans, shares			535,418
Share-based compensation	35.5			35.5
Foreign currency translation	15.6							15.6
Change in unrealized (loss) gain, net of tax	(51)							(51)
Change in pension liability adjustment, net of tax	2.3							2.3
Ending balance at Mar. 31, 2022	2,140.8		$ 1.5	2,823.8		(326.6)		(357.9)
Balance, shares at Mar. 31, 2022			152,530,449
Beginning balance at Dec. 31, 2021	2,227.5	$ (67.7)	$ 1.5	2,860	$ (77.7)	(309.2)	$ 10	(324.8)
Balance, shares at Dec. 31, 2021			151,995,031
Net loss	(68.2)
Ending balance at Sep. 30, 2022	2,051.2		$ 1.5	2,918.4		(367.4)		(501.3)
Balance, shares at Sep. 30, 2022			153,526,336
Beginning balance at Mar. 31, 2022	2,140.8		$ 1.5	2,823.8		(326.6)		(357.9)
Balance, shares at Mar. 31, 2022			152,530,449
Net loss	(19.8)					(19.8)
Issuance of common stock under share-based compensation plans	7.3			7.3
Issuance of common stock under share-based compensation plans, shares			503,145
Share-based compensation	38.8			38.8
Foreign currency translation	(47.4)							(47.4)
Change in unrealized (loss) gain, net of tax	(27.5)							(27.5)
Change in pension liability adjustment, net of tax	2.1							2.1
Ending balance at Jun. 30, 2022	2,094.3		$ 1.5	2,869.9		(346.4)		(430.7)
Balance, shares at Jun. 30, 2022			153,033,594
Net loss	(21)					(21)
Issuance of common stock under share-based compensation plans	9.3			9.3
Issuance of common stock under share-based compensation plans, shares			492,742
Share-based compensation	39.2			39.2
Foreign currency translation	(48.5)							(48.5)
Change in unrealized (loss) gain, net of tax	(24.2)							(24.2)
Change in pension liability adjustment, net of tax	(2.1)							(2.1)
Ending balance at Sep. 30, 2022	$ 2,051.2		$ 1.5	$ 2,918.4		$ (367.4)		$ (501.3)
Balance, shares at Sep. 30, 2022			153,526,336

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Change in unrealized (loss) gain, tax	$ (8.8)	$ (10)	$ (18.4)	$ (2.3)	$ (1.4)	$ (4.4)
Change in pension liability adjustment, tax	$ 0.8	$ 0.8	$ 0.8	$ 1	$ 1	$ 1

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Statement of Cash Flows [Abstract]
Net loss	$ (68.2)	$ (65.9)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income tax expense (benefit)	5.1	(45)
Depreciation and amortization	64.4	59.3
Amortization of debt issuance costs and debt discount	3	11.5
Provision for doubtful accounts	2.2	1.5
Net periodic pension and postretirement cost	3.6	6.6
Share-based compensation	113.5	83.6
Change in fair value of contingent consideration	3.2
Other		0.6
Changes in operating assets and liabilities excluding effects of acquisitions and divestitures:
Trade and other receivables	(16.2)	(5.3)
Prepaid expenses and other current assets	(14)	(13.9)
Accounts payable and other accrued expenses	4.5	1.9
Deferred revenue	(3.5)	5.2
Employee compensation and benefits	(2.8)	(5.1)
Accrued interest	(0.3)	0.3
Accrued taxes	(0.1)	20.9
Other assets and liabilities	(3.6)	(7.3)
Net cash provided by operating activities	90.8	48.9
Cash Flows from Investing Activities
Purchase of customer funds marketable securities	(534.3)	(500.5)
Proceeds from sale and maturity of customer funds marketable securities	304.2	409.2
Expenditures for property, plant, and equipment	(10.4)	(7.3)
Expenditures for software and technology	(54.5)	(38.4)
Acquisition costs, net of cash and restricted cash acquired		(373.5)
Net cash used in investing activities	(295)	(510.5)
Cash Flows from Financing Activities
Increase in customer funds obligations, net	1,010.4	1,631
Proceeds from issuance of common stock under share-based compensation plans	22.6	70.9
Repayment of long-term debt obligations	(6.3)	(4.3)
Proceeds from revolving credit facility		295
Repayment of revolving credit facility		(295)
Proceeds from issuance of convertible senior notes, net of issuance costs		561.8
Purchases of capped calls related to convertible senior notes		(45)
Net cash provided by financing activities	1,026.7	2,214.4
Effect of exchange rate changes on cash, restricted cash, and equivalents	(8.1)	(0.5)
Net increase in cash, restricted cash, and equivalents	814.4	1,752.3
Cash, restricted cash, and equivalents at beginning of period	1,952.8	2,228.5
Cash, restricted cash, and equivalents at end of period	2,767.2	3,980.8
Reconciliation of cash, restricted cash, and equivalents to the condensed consolidated balance sheets
Cash and equivalents	408.4	378.8
Restricted cash	0.8	1.9
Restricted cash and equivalents included in customer funds	2,358	3,600.1
Total cash, restricted cash, and equivalents	$ 2,767.2	$ 3,980.8

Organization

Organization	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization Ceridian HCM Holding Inc. and its subsidiaries (also referred to in this report as “Ceridian,” “we,” “our,” “us,” or the “Company”) offer a broad range of services and software designed to help employers more effectively manage employment processes, such as payroll, payroll-related tax filing, human resource information systems, employee self-service, time and labor management, employee assistance programs, and recruitment and applicant screening. Our technology-based services are typically provided through long-term customer relationships that result in a high level of recurring revenue.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Si gnificant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Accordingly, the unaudited condensed consolidated financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accounting policies we follow are set forth in Note 2, “Summary of Significant Accounting Policies,” to our audited consolidated financial statements in our 2021 Form 10-K . The following notes should be read in conjunction with these policies and other disclosures in our 2021 Form 10-K. In the opinion of management, the unaudited condensed consolidated financial statements contained herein reflect all adjustments (consisting only of normal recurring adjustments, except as set forth in these notes to condensed consolidated financial statements) necessary to present fairly in all material aspects the financial position, results of operations, comprehensive income (loss), and cash flows from all periods presented. Interim results are not necessarily indicative of results for a full year. Deferred Costs Deferred costs, which primarily consist of deferred sales commissions, included within Other assets on our condensed consolidated balance sheets were $ 141.0 million and $ 144.5 million as of September 30, 2022, and December 31, 2021 , respectively. Amortization expense for the deferred costs was $ 13.1 million and $ 11.7 million for the three months ended September 30, 2022, and 2021 , respectively, and $ 38.5 million and $ 34.0 million for the nine months ended September 30, 2022, and 2021 , respectively. Recently Issued and Adopted Accounting Pronouncements from the Financial Accounting Standards Board Standard Issuance Date Description Adoption Date Effect on the Financial Statements Accounting Standards Update ("ASU") 2020-06 , Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40) August 2020 This amendment simplifies the accounting for convertible instruments by removing certain separation models required under current GAAP for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost. January 2022 We adopted the guidance as of January 1, 2022 , using the modified retrospective method of transition. The adoption resulted in the elimination of the debt discount (and related deferred tax liability) that was recorded within equity related to our Convertible Senior Notes. The net impact of the adjustments was recorded to the opening balance of accumulated deficit and additional paid in capital. The impact to the condensed consolidated balance sheet was as follows: (1) increase of $ 92.9 million to long-term debt, (2) decrease of $ 77.7 million to additional paid-in capital, net of allocated issuance costs of $ 2.7 million and deferred tax impact of $ 28.2 million, and (3) decrease to accumulated deficit of $ 10.0 million. ASU 2020-04 , Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting March 2020 This amendment provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Not yet adopted This amendment may be elected over time through December 31, 2022 as reference rate reform activities occur. We do not expect the adoption of this guidance to have a significant impact on our financial statements.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2022
Business Combinations [Abstract]
Business Combinations	3. Busine ss Combinations ADAM HCM On December 3, 2021, we completed the acquisition of 100 % of the outstanding interests in ATI ROW, LLC and ADAM HCM MEXICO, S. de R.L de C.V (collectively, "ADAM HCM") for $ 34.5 million. ADAM HCM is a payroll and HCM company in Latin America. The purchase accounting was considered complete as of June 30, 2022. Intangible assets recorded for this acquisition consist of $ 7.5 million of customer relationships, $ 2.9 million of developed technology, and $ 0.4 million of trade name. Of the goodwill associated with this acquisition, $ 24.0 million is deductible for income tax purposes. The major classes of assets and liabilities to which we have allocated the purchase price were as follows: (Dollars in millions) Cash and equivalents $ 0.2 Trade receivables, prepaid expenses, and other current assets 0.9 Goodwill 24.0 Other intangible assets 10.8 Other assets 0.2 Accounts payable and other current liabilities ( 1.6 ) Total purchase price $ 34.5

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Our financial assets and liabilities measured at fair value on a recurring basis were categorized as follows: September 30, 2022 Level 1 Level 2 Level 3 Total (Dollars in millions) Assets Available for sale customer funds assets $ — $ 1,977.3 (a) $ — $ 1,977.3 Total assets measured at fair value $ — $ 1,977.3 $ — $ 1,977.3 Liabilities DataFuzion contingent consideration $ — $ — $ 9.2 (b) $ 9.2 Total liabilities measured at fair value $ — $ — $ 9.2 $ 9.2 December 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in millions) Assets Available for sale customer funds assets $ — $ 1,952.4 (a) $ — $ 1,952.4 Total assets measured at fair value $ — $ 1,952.4 $ — $ 1,952.4 Liabilities DataFuzion contingent consideration $ — $ — $ 6.0 (b) $ 6.0 Total liabilities measured at fair value $ — $ — $ 6.0 $ 6.0 (a) Fair value is based on inputs that are observable for the asset or liability, other than quoted prices. (b) For the contingent consideration related to the 2021 acquisition of certain assets and liabilities of DataFuzion HCM, Inc. ("DataFuzion"), we utilize an option pricing model, specifically a Black-Scholes-Merton model, to estimate the fair value of the contingent liability as of the reporting dates. This model uses certain assumptions related to risk-free rates and volatility as well as certain judgments in forecasting annual recurring revenue. The contingent consideration has been measured as Level 3 given the unobservable inputs that are significant to the measurement of liability. The contingent consideration is included within other liabilities in our condensed consolidated balance sheets. During the three and nine months ended September 30, 2022 , we recognized expense of $ 1.2 million and $ 3.2 million, respectively, within selling, general, and administrative expense in our condensed consolidated statements of operations due to the remeasurement of the DataFuzion contingent consideration. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis During the nine months ended September 30, 2022 , we did not re-measure any financial assets or liabilities at fair value on a nonrecurring basis. During the year ended December 31, 2021, assets and liabilities acquired as part of business combinations and recognized as part of our convertible debt issuance have been recorded at fair value on a nonrecurring basis.

Customer Funds

Customer Funds	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Customer Funds	5. Customer Funds In certain jurisdictions, we collect funds for payment of payroll and taxes; temporarily hold such funds until payment is due; remit the funds to the customers’ employees and appropriate taxing authorities; file federal, state, and local tax returns; and handle related regulatory correspondence and amendments. The customer assets are held in segregated accounts intended for the specific purpose of satisfying customer funding obligations and therefore are not freely available for our general business use. In the U.S. and Canada, these customer funds are held in trusts. Investment income from invested customer funds, also referred to as float revenue or float, is a component of our compensation for providing services under agreements with our customers. Investment income from invested customer funds included in recurring revenue was $ 21.3 million and $ 9.9 million for the three months ended September 30, 2022, and 2021, respectively, and $ 47.4 million and $ 31.0 million for the nine months ended September 30, 2022, and 2021. Investment income includes interest income, realized gains and losses from sales of customer funds’ investments, and unrealized credit losses determined to be unrecoverable. The amortized cost of customer funds as of September 30, 2022, and December 31, 2021, is the original cost of assets acquired. The amortized cost and fair values of investments of customer funds available for sale were as follows: September 30, 2022 Amortized Gross Unrealized Fair Cost Gain Loss Value (Dollars in millions) Money market securities, investments carried at cost $ 2,346.0 $ — $ — 2,346.0 Available for sale investments: U.S. government and agency securities 701.4 — ( 55.2 ) 646.2 Canadian and provincial government securities 428.3 0.1 ( 17.5 ) 410.9 Corporate debt securities 653.6 0.4 ( 38.1 ) 615.9 Asset-backed securities 169.2 — ( 5.9 ) 163.3 Mortgage-backed securities 15.1 — ( 0.8 ) 14.3 Other short-term investments 58.4 — — 58.4 Other securities 74.4 — ( 6.1 ) 68.3 Total available for sale investments 2,100.4 0.5 ( 123.6 ) 1,977.3 Invested customer funds 4,446.4 $ 0.5 $ ( 123.6 ) 4,323.3 Receivables 10.2 12.0 Total customer funds $ 4,456.6 $ 4,335.3 December 31, 2021 Amortized Gross Unrealized Fair Cost Gain Loss Value (Dollars in millions) Money market securities, investments carried at cost $ 1,562.4 $ — $ — $ 1,562.4 Available for sale investments: U.S. government and agency securities 697.8 9.5 ( 5.8 ) 701.5 Canadian and provincial government securities 399.9 5.3 ( 1.3 ) 403.9 Corporate debt securities 551.4 8.3 ( 3.1 ) 556.6 Asset-backed securities 174.2 1.5 ( 0.3 ) 175.4 Mortgage-backed securities 2.7 — — 2.7 Other short-term investments 41.4 — — 41.4 Other securities 71.7 — ( 0.8 ) 70.9 Total available for sale investments 1,939.1 24.6 ( 11.3 ) 1,952.4 Invested customer funds 3,501.5 $ 24.6 $ ( 11.3 ) 3,514.8 Receivables 18.4 21.0 Total customer funds $ 3,519.9 $ 3,535.8 The following represents the gross unrealized losses and the related fair value of the investments of customer funds available for sale, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. September 30, 2022 Less than 12 months 12 months or more Total Unrealized Fair Unrealized Fair Unrealized Fair (Dollars in millions) U.S. government and agency securities $ ( 27.1 ) $ 413.3 $ ( 28.1 ) $ 230.0 $ ( 55.2 ) $ 643.3 Canadian and provincial government securities ( 11.9 ) 344.8 ( 5.6 ) 58.4 ( 17.5 ) 403.2 Corporate debt securities ( 24.1 ) 488.0 ( 14.0 ) 116.1 ( 38.1 ) 604.1 Asset-backed securities ( 4.5 ) 136.0 ( 1.4 ) 25.8 ( 5.9 ) 161.8 Mortgage-backed securities ( 0.8 ) 14.3 — — ( 0.8 ) 14.3 Other securities ( 2.3 ) 31.6 ( 3.8 ) 36.6 ( 6.1 ) 68.2 Total available for sale investments $ ( 70.7 ) $ 1,428.0 $ ( 52.9 ) $ 466.9 $ ( 123.6 ) $ 1,894.9 Management does not believe that any individual unrealized loss was unrecoverable as of September 30, 2022. The unrealized losses are primarily attributable to changes in interest rates and not to credit deterioration. We currently do not intend to sell or expect to be required to sell the securities before the time required to recover the amortized cost. The amortized cost and fair value of investment securities available for sale at September 30, 2022, by contractual maturity are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or to prepay obligations with or without call or prepayment penalties. September 30, 2022 Cost Fair Value (Dollars in millions) Due in one year or less $ 2,734.6 $ 2,731.8 Due in one to three years 649.4 618.8 Due in three to five years 819.6 753.6 Due after five years 242.8 219.1 Invested customer funds $ 4,446.4 $ 4,323.3

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets Goodwill Goodwill and changes therein were as follows: (Dollars in millions) Balance at December 31, 2020 $ 2,031.8 Acquisitions 308.2 Translation ( 16.4 ) Balance at December 31, 2021 2,323.6 Acquisition (a) 0.5 Translation ( 62.3 ) Balance at September 30, 2022 $ 2,261.8 a) The purchase accounting was finalized for the ADAM HCM acquisition during the second quarter of 2022. Refer to Note 3, "Business Combinations" to our condensed consolidated financial statements for additional information. Intangible Assets Intangible assets consisted of the following: September 30, 2022 Gross Carrying Accumulated Net Estimated Life (Dollars in millions) Customer lists and relationships $ 295.1 $ ( 224.3 ) $ 70.8 4 - 12 Trade name 182.9 ( 4.0 ) 178.9 3 - 5 and Indefinite Technology 223.8 ( 175.1 ) 48.7 3 - 5 Total other intangible assets $ 701.8 $ ( 403.4 ) $ 298.4 December 31, 2021 Gross Carrying Accumulated Net Estimated Life (Dollars in millions) Customer lists and relationships $ 308.4 $ ( 220.4 ) $ 88.0 4 - 12 Trade name 184.4 ( 3.2 ) 181.2 3 - 5 and Indefinite Technology 233.9 ( 170.6 ) 63.3 3 - 5 Total other intangible assets $ 726.7 $ ( 394.2 ) $ 332.5 As of October 1 each year, we perform an impairment assessment of our indefinite-lived intangible assets, which includes our Ceridian and Dayforce trade names, which have a carrying value of $ 167.2 million and $ 4.4 million, respectively as of September 30, 2022. We continue to evaluate the use of our trade names and branding in our sales and marketing efforts. If there is a fundamental shift in the method of our branding in the future, we will assess the impact on the carrying amount of our trade name intangible assets to determine whether an impairment exists. If it is determined that an impairment has occurred, it would be recognized during the period in which the decision was made to make the fundamental shift. Amortization expense related to definite-lived intangible assets was $ 7.5 million and $ 7.3 million for the three months ended September 30, 2022, and 2021 , respectively, and $ 22.9 million and $ 19.3 million for the nine months ended September 30, 2022, and 2021 respectively.

Debt

Debt	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Debt	7. D ebt Overview Our debt obligations consisted of the following as of the periods presented: September 30, December 31, 2022 2021 (Dollars in millions) Term Debt, interest rate of 5.6 % and 2.6 %, respectively $ 652.8 $ 657.9 Revolving Credit Facility ($ 300.0 million available capacity less amounts reserved for 2.0 million and $ 2.1 million, respectively) — — Convertible Senior Notes, interest rate of 0.25 % 575.0 575.0 Australia Line of Credit (AUD $ 1.5 million and $ 2.9 million letter of credit capacity, respectively, which were fully utilized; USD $ 1.0 million and USD $ 2.1 million, respectively) — — Financing lease liabilities (Please refer to Note 13) 8.8 9.6 Total debt 1,236.6 1,242.5 Less unamortized discount on Term Debt and Convertible Senior Notes (a) 0.7 95.5 Less unamortized debt issuance costs on Term Debt and Convertible Senior Notes (a) 13.7 14.3 Less current portion of long-term debt 8.1 8.3 Long-term debt, less current portion $ 1,214.1 $ 1,124.4 a) We adopted ASU 2020-06 as of January 1, 2022. The unamortized discount and debt issuance costs on the Convertible Senior Notes is presented post-adoption of ASU 2020-06 as of September 30, 2022 and is presented pre-adoption of ASU 2020-06 as of December 31, 2021. Refer to the Convertible Senior Notes section below for further discussion of the impacts of the adoption of ASU 2020-06 on our condensed consolidated financial statements. Accrued interest and fees related to the debt obligati ons was $ 0.2 million and $ 0.5 million as of September 30, 2022 and December 31, 2021, respectively, and is included within Other accrued expenses in our condensed consolidated balance sheets. Senior Secured Credit Facility On April 30, 2018, we completed the refinancing of our debt by entering into a new credit agreement. Pursuant to the terms of the new credit agreement, we became borrower of (i) a $ 680.0 million term loan debt facility (the “Term Debt”) and (ii) a $ 300.0 million revolving credit facility (the “Revolving Credit Facility”) (collectively, the “Senior Secured Credit Facility”). Our obligations under the Senior Secured Credit Facility are secured by first priority security interests in substantially all of our assets and the domestic subsidiary guarantors, subject to permitted liens and certain exceptions. The Term Debt will mature on April 30, 2025 . We are required to make annual amortization payments in respect of the Term Debt in an amount equal to 1.00 % of the original principal amount thereof, payable in equal quarterly installments of 0.25 % of the original principal amount of the first lien term debt. On December 15, 2021, we completed the second amendment to our Senior Secured Credit Facility, which extended that maturity date of the Revolving Credit Facility from April 30, 2023 to January 29, 2025 . The Revolving Credit Facility does not require amortization payments. Convertible Senior Notes In March 2021, we issued $ 575.0 million in aggregate principal amount of 0.25 % Convertible Senior Notes due 2026 in a private offering to qualified institutional buyers pursuant to Rule 144A promulgated under the Securities Act of 1933, as amended, and pursuant to exemptions from the prospectus requirements of applicable Canadian securities laws, including the exercise in full by the initial purchasers of their option to purchase an additional $ 75.0 million in aggregate principal amount of 0.25 % Convertible Senior Notes due 2026 (collectively, the “Convertible Senior Notes”). The Convertible Senior Notes bear interest at a rate of 0.25 % per year and interest is payable semiannually in arrears on March 15 and September 15 of each year, beginning on September 15, 2021 . The Convertible Senior Notes mature on March 15, 2026 , unless earlier converted, redeemed or repurchased. The total net proceeds from the offering, after deducting initial purchase discounts and other debt issuance costs, were $ 561.8 million. The following table presents details of the Convertible Senior Notes: Initial Conversion Rate per $ 1,000 Principal Initial Conversion Price per Share Convertible Senior Notes 7.5641 shares $ 132.20 The Convertible Senior Notes will be convertible at the option of the holders at any time only under certain circumstances as outlined in Note 9, “Debt,” to our audited consolidated financial statements in our 2021 Form 10-K . The conditions allowing holders of the Convertible Senior Notes to convert have not been met and therefore were not convertible as of September 30, 2022. On December 30, 2021, we notified the holders of the Convertible Senior Notes of our irrevocable election to settle the conversion obligation in connection with the Convertible Senior Notes submitted for conversion on or after January 1, 2022, or at maturity with a combination of cash and shares of our common stock. Generally, under this settlement method, the conversion value will be settled in cash in an amount no less than the principal amount being converted, and any excess of the conversion value over the principal amount will be settled, at our election, in cash or shares of common stock. On January 1, 2022, we adopted ASU 2020-06 using the modified retrospective transition method. Under such transition, prior-period information has not been retrospectively adjusted for this change in accounting guidance. Upon the adoption of ASU 2020-06, the Convertible Senior Notes are accounted for as a single liability, and the carrying amount of the Convertible Senior Notes was $ 564.7 million as of September 30, 2022 , with principal of $ 575.0 million, net of issuance costs of $ 10.3 million. The Convertible Senior Notes are included within Long-term debt, less current portion in our condensed consolidated balance sheets as of September 30, 2022 . The issuance costs related to the Convertible Senior Notes are being amortized to interest expense over the contractual term of the Convertible Senior Notes at an effective interest rate of 5.1 %. Interest expense recognized related to the Convertible Senior Notes was as follows: Three Months Ended September 30, 2022 Three Months Ended September 30, 2021 Nine Months Ended September 30, 2022 Nine Months Ended September 30, 2021 (Post-adoption of ASU 2020-06) (Pre-adoption of ASU 2020-06) (Post-adoption of ASU 2020-06) (Pre-adoption of ASU 2020-06) (Dollars in millions) Contractual interest expense $ 0.4 $ 0.4 $ 1.0 $ 0.9 Amortization of debt discount — 4.4 — 9.5 Amortization of debt issuance costs 0.6 0.5 2.0 1.1 Total $ 1.0 $ 5.3 $ 3.0 $ 11.5 Capped Calls In March 2021, in connection with the pricing of the Convertible Senior Notes, we entered into capped call transactions with the option counterparties (the “Capped Calls”). The Capped Calls each have an initial strike price of $ 132.20 per share, and an initial cap price of $ 179.26 per share, both subject to certain adjustments. The capped call transactions are generally expected to reduce potential dilution to our common stock upon any conversion of the Convertible Senior Notes and/or offset any potential cash payments we would be required to make in excess of the principal amount of converted Convertible Senior Notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of the Convertible Senior Notes. As the Capped Calls qualify for a scope exception from derivative accounting for instruments that are both indexed to the issuer's own stock and classified in stockholder’s equity in our condensed consolidated balance sheet, we have recorded an amount of $ 33.0 million as a reduction to additional paid-in capital which will not be remeasured. This represents the premium of $ 45.0 million paid for the purchase of the Capped Calls, net of the deferred tax impact of $ 12.0 million. Future Payments and Maturities of Debt The future principal payments and maturities of our indebtedness, excluding financing lease obligations, are as follows: Years Ending December 31, Amount (Dollars in millions) 2022 $ 1.7 2023 6.8 2024 6.8 2025 637.5 2026 575.0 $ 1,227.8 Fair Value of Debt Our debt does not trade in active markets and was considered to be a Level 2 measurement at September 30, 2022 . The fair value of the Term Debt was based on the borrowing rates currently available to us for bank loans with similar terms and average maturities and the limited trades of our debt. The fair value of the Convertible Senior Notes was determined based on the closing trading price per $ 1,000 of the Convertible Senior Notes as of the last day of trading for the period and is primarily affected by the trading price of our common stock and market interest rates. The fair value of our debt was estimated to be $ 1,086.1 million and $ 1,248.9 million as of September 30, 2022, and December 31, 2021 , respectively.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Employee Benefit Plans	8. Employee Benefit Plans The components of net periodic cost for our defined benefit pension plan and for our postretirement benefit plan are included in the following tables: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Net Periodic Pension Cost (Dollars in millions) Interest cost $ 2.2 $ 1.7 $ 6.6 $ 5.1 Actuarial loss amortization 3.4 4.4 10.2 13.0 Less: Expected return on plan assets ( 4.0 ) ( 3.3 ) ( 11.9 ) ( 9.9 ) Net periodic pension cost $ 1.6 $ 2.8 $ 4.9 $ 8.2 Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Net Periodic Postretirement Benefit (Dollars in millions) Interest cost $ 0.1 $ — $ 0.2 $ 0.1 Actuarial gain amortization ( 0.5 ) ( 0.5 ) ( 1.5 ) ( 1.5 ) Prior service credit amortization — ( 0.1 ) — ( 0.2 ) Net periodic postretirement benefit gain $ ( 0.4 ) $ ( 0.6 ) $ ( 1.3 ) $ ( 1.6 )

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Share-Based Compensation	9. Share-Based Compensation Our share-based compensation consists of stock options, restricted stock units (“RSU”), and performance-based stock units (“PSU”). We also offer an employee stock purchase plan. Under the 2013 Ceridian HCM Holding Inc. Stock Incentive Plan, as amended ("2013 SIP") and Ceridian HCM Holding Inc. 2018 Equity Incentive Plan (as amended and restated from time to time, the “2018 EIP”), we have shares reserved for issuance of common stock to eligible employees and our Board of Directors. The 2018 EIP serves as a successor to the 2013 SIP as we ceased granting awards under the 2013 SIP as of April 24, 2018, and we do not intend to grant any additional awards under the 2013 SIP. Most of our equity awards under the 2018 EIP vest either annually or quarterly on a pro rata basis, generally over a one -, three -, four -, or five-year period or on a specific date if certain performance criteria are satisfied and certain equity values are attained. In addition, upon termination of service, all vested awards must be exercised generally within 90 days after termination, or these awards will be forfeited. The equity awards have a 10 -year contractual term, and the options have an exercise price that is not less than the fair market value of the underlying stock on the date of grant. Pursuant to the evergreen refresh provision of the 2018 EIP, on February 23, 2022, the Board of Directors approved an increase to the share reserve of the three percent of the number of shares of common stock outstanding on January 31, 2022 to take place on March 31, 2022. Further, our Board of Directors approved an amendment effective April 1, 2022, to remove the evergreen refresh provision of the 2018 EIP that permitted the share reserve to be increased on March 31 of each of the first ten calendar years during the term of the 2018 EIP, by the lesser of (i) three percent of the number of shares of our common stock outstanding on each January 31 immediately prior to the date of increase or (ii) such number of shares of our common stock determined by the Board of Directors. As of September 30, 2022 , there were 914,330 stock options and RSUs outstanding under the 2013 SIP and there were 11,963,525 stock options, RSUs, and PSUs outstanding and 13,789,715 shares available for future grants of equity awards under the 2018 EIP. Total share-based compensation expense was $ 39.2 million and $ 29.4 million for the three months ended September 30, 2022, and 2021, respectively, and $ 113.5 million and $ 83.6 million for the nine months ended September 30, 2022, and 2021. Performance-Based Stock Options Performance-based stock option activity under the 2013 SIP and the 2018 EIP was as follows: Shares Weighted Weighted Aggregate Performance-based options outstanding at December 31, 2021 1,777,050 $ 64.72 8.3 $ 70.6 Granted — — — — Exercised ( 12,755 ) ( 13.46 ) — — Forfeited or expired ( 1,857 ) ( 13.46 ) — — Performance-based options outstanding at September 30, 2022 1,762,438 $ 65.15 7.6 $ 0.2 Performance-based options exercisable at September 30, 2022 262,438 $ 64.50 7.7 $ 0.2 As of September 30, 2022 , there was $ 4.5 million of share-based compensation expense related to unvested performance-based stock option awards not yet recognized, which is expected to be recognized over a weighted-average period of 0.5 years. Performance Stock Units PSU activity under the 2018 EIP was as follows: Shares PSUs outstanding at December 31, 2021 318,745 Granted 582,662 Shares issued upon vesting of PSUs ( 168,414 ) Forfeited or canceled ( 22,069 ) PSUs outstanding at September 30, 2022 710,924 PSUs releasable at September 30, 2022 — In 2021, we granted PSUs under the Ceridian HCM Holding Inc. 2021 Management Incentive Plan (the “2021 MIP”) for the incentive period of January 1, 2021 through December 31, 2021, and also as part of long term incentive grants to certain members of management. One-third of the PSUs granted in 2021 as part of long term incentive grants to certain members of management vested on March 8, 2022 , and will vest on each of March 8, 2023 , and March 8, 2024 . On February 24, 2022, we granted PSUs under the 2022 Ceridian HCM Holding, Inc. Management Incentive Plan (the “2022 MIP”) for the incentive period of January 1, 2022 through December 31, 2022, and also as part of long term incentive grants to certain members of management. The vesting conditions for the PSUs granted on February 24, 2022, are based on the following performance criteria: (1) the Cloud revenue, excluding float revenue (the “Cloud Revenue Goal”) (2) the adjusted EBITDA, excluding float revenue (the “Adjusted EBITDA Goal”), and (3) the Sales per employee per month (“PEPM”) annual contract value (“ACV”) (the “Sales PEPM ACV Goal”), for fiscal year 2022 (collectively the “Performance Goals”). Both the Cloud Revenue Goal and the Adjusted EBITDA Goal are calculated based on our operating results on a constant currency basis as adjusted to exclude: float revenue; foreign exchange gain (loss); share-based compensation expense and related employer taxes; severance charges; restructuring consulting fees; significant acquisitions or disposals and related transaction costs; as well as other non-recurring items, subject to the Board of Directors approval. The Sales PEPM ACV Goal is calculated based on the sales of our solutions on a constant currency basis that contribute to Cloud recurring revenue. Any cash payment under the 2022 MIP and the vesting conditions for the PSU awards granted in 2022 will be determined based on our performance against the achievement of the Performance Goals, and the payout that a participant can receive may be between 0 % for not meeting the applicable thresholds of any of the Performance Goals, up to a maximum total payout of 167 % for achieving the maximum level of all of the Performance Goals. Upon vesting of a PSU, a participant will receive shares of common stock of the Company. The probability of vesting of the PSUs related to the 2022 MIP and as part of long term incentive grants to certain members of management will continue to be evaluated throughout 2022, and share-based compensation will be recognized in accordance with that probability. As of September 30, 2022 , there was $ 22.7 million of share-based compensation expense related to unvested PSUs not yet recognized. Restricted Stock Units RSU activity under the 2013 SIP and the 2018 EIP was as follows: Shares RSUs outstanding at December 31, 2021 1,935,939 Granted 1,507,286 Shares issued upon vesting of RSUs ( 456,617 ) Forfeited or canceled ( 140,140 ) RSUs outstanding at September 30, 2022 2,846,468 RSUs releasable at September 30, 2022 660,613 During the nine months ended September 30, 2022 , 519,294 RSUs vested. As of September 30, 2022 , there were 2,185,855 unvested RSUs outstanding and 660,613 vested RSUs outstanding. As of September 30, 2022 , there was $ 115.6 million of share-based compensation expense related to unvested RSUs not yet recognized, which is expected to be recognized over a weighted-average period of 1.5 years. Term-Based Stock Options Term-based stock option activity under the 2013 SIP and the 2018 EIP was as follows: Shares Weighted Weighted Aggregate Term-based options outstanding at December 31, 2021 8,515,869 $ 48.87 7.3 $ 473.4 Granted 81,145 56.29 — — Exercised ( 693,875 ) ( 32.70 ) — — Forfeited or expired ( 345,114 ) ( 58.31 ) — — Term-based options outstanding at September 30, 2022 7,558,025 $ 50.00 6.6 $ 84.4 Term-based options exercisable at September 30, 2022 5,169,434 $ 43.57 6.3 $ 78.8 As of September 30, 2022 , there was $ 37.8 million of share-based compensation expense related to unvested term-based stock options not yet recognized, which is expected to be recognized over a weighted-average period of 0.8 years. Global Employee Stock Purchase Plan We maintain the Ceridian HCM Holding Inc. Global Employee Stock Purchase Plan (“GESPP”) pursuant to which we have shares reserved for the issuance of common stock to eligible participants through quarterly purchases via payroll deductions. A total of 1,701,453 shares of common stock are available for future issuances under the plan as of September 30, 2022 . The purchase price is the lower of 85 % of the fair market value of a share of common stock on (i) January 1 or (ii) the purchase date. Our GESPP activity was as follows: Period Ended Shares Issued Purchase Price March 31, 2022 56,208 $ 58.11 June 30, 2022 84,541 40.02 September 30, 2022 59,599 47.50

Revenue

Revenue	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue	10. R evenue Disaggregation of Revenue Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in millions) Revenue: Cloud Dayforce Recurring $ 207.8 $ 160.3 $ 590.7 $ 456.2 Professional services and other 46.4 38.4 134.2 113.2 Total Dayforce revenue 254.2 198.7 724.9 569.4 Powerpay Recurring 22.6 20.7 66.5 61.5 Professional services and other 0.1 0.2 0.4 0.8 Total Powerpay revenue 22.7 20.9 66.9 62.3 Total Cloud revenue 276.9 219.6 791.8 631.7 Bureau Recurring 33.4 34.0 105.6 101.4 Professional services and other 5.3 3.6 12.7 9.0 Total Bureau revenue 38.7 37.6 118.3 110.4 Total revenue $ 315.6 $ 257.2 $ 910.1 $ 742.1 Recurring revenue includes float revenue of $ 21.3 million and $ 9.9 million for the three months ended September 30, 2022, and 2021, respectively, and $ 47.4 million and $ 31.0 million for the nine months ended September 30, 2022, and 2021, respectively. Contract Balances A contract asset is generally recorded when revenue recognized for professional service performance obligations exceed the contractual amount of billings for implementation related professional services. Contract assets were $ 69.2 million and $ 62.7 million as of September 30, 2022, and December 31, 2021, respectively. Contract assets expected to be recognized in revenue within twelve months are included within Prepaid expenses and other current assets, with the remaining contract assets included within Other assets on our condensed consolidated balance sheets. Deferred Revenue Deferred revenue primarily consists of payments received in advance of revenue recognition. The changes in deferred revenue were as follows: Nine Months Ended September 30, 2022 2021 (Dollars in millions) Deferred revenue, beginning of period $ 48.7 $ 24.4 New billings 483.2 399.6 Acquired billings — 17.0 Revenue recognized ( 486.5 ) ( 394.0 ) Effect of exchange rate ( 2.8 ) ( 0.5 ) Deferred revenue, end of period $ 42.6 $ 46.5 Transaction Price for Remaining Performance Obligations As of September 30, 2022 , approximately $ 1,076.3 million of revenue is expected to be recognized over the next three years from remaining performance obligations, which represents contracted revenue for recurring services and fixed price professional services, primarily implementation services, that has not yet been recognized, including deferred revenue and unbilled amounts that will be recognized as revenue in future periods. In accordance with the practical expedient provided in ASC Topic 606, performance obligations that are billed and recognized as they are delivered, primarily professional services contracts that are on a time and materials basis, are excluded from the transaction price for remaining performance obligations disclosed above.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Accumulated Other Comprehensive Loss	11. Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss were as follows: Foreign Unrealized Gain Pension Total (Dollars in millions) Balance as of December 31, 2021 $ ( 177.3 ) $ 2.8 $ ( 150.3 ) $ ( 324.8 ) Other comprehensive (loss) income before income taxes and reclassifications ( 80.3 ) ( 139.9 ) 0.2 ( 220.0 ) Income tax benefit (expense) — 37.2 ( 2.4 ) 34.8 Reclassifications to earnings — — 8.7 8.7 Other comprehensive (loss) income ( 80.3 ) ( 102.7 ) 6.5 ( 176.5 ) Balance as of September 30, 2022 $ ( 257.6 ) $ ( 99.9 ) $ ( 143.8 ) $ ( 501.3 )

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes Our income tax provision represents federal, state, and international taxes on our income recognized for financial statement purposes and includes the effects of temporary differences between financial statement income and income recognized for tax return purposes. Deferred tax assets and liabilities are recorded for temporary differences between the financial reporting basis and the tax basis of assets and liabilities. We record a valuation allowance to reduce our deferred tax assets to reflect the net deferred tax assets that we believe will be realized. In assessing the likelihood that we will be able to recover our deferred tax assets and the need for a valuation allowance, we consider all available evidence, both positive and negative, including historical levels of pre-tax book income, expiration of net operating losses, changes in our debt and equity structure, expectations and risks associated with estimates of future taxable income, ongoing prudent and feasible tax planning strategies, as well as current tax laws. As of September 30, 2022 , we have a valuation allowance of $ 45.4 million against certain deferred tax assets consisting primarily of $ 12.6 million attributable to state net operating loss carryovers, and $ 31.0 million attributable to deferred tax assets recorded as part of a previous acquisition. We recorded an income tax expense of $ 7.8 million during the nine months ended September 30, 2022 , consisting of tax expense of $ 9.5 million attributable to share-based compensation, $ 8.5 million attributable to the U.S Global Intangible Low Tax Income ("GILTI"), and $ 2.5 million attributable to the U.S. Base Erosion and Anti-Abuse Tax ("BEAT"), partially offset by a $ 12.7 million tax benefit from current operations. There were no unrecognized tax benefits as of September 30, 2022, and December 31, 2021. We make adjustments to these reserves when facts and circumstances change, such as the closing of tax audits or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on our financial condition and operating results. We file income tax returns in the U.S. federal jurisdiction, various states, and foreign jurisdictions. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2017.

Leases

Leases	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	13. Leases Supplemental balance sheet information related to leases was as follows: Lease Type Balance Sheet Classification September 30, 2022 December 31, 2021 (Dollars in millions) ASSETS Operating lease assets Trade and other receivables, net $ 0.1 $ 0.2 Operating lease assets Prepaid expenses and other current assets 2.6 3.4 Operating lease assets Right of use lease asset 27.5 29.4 Financing lease assets Property, plant, and equipment, net 7.3 8.3 Total lease assets $ 37.5 $ 41.3 LIABILITIES Current Financing lease liabilities Current portion of long-term debt $ 1.3 $ 1.5 Operating lease liabilities Current portion of long-term lease liabilities 14.9 11.3 Noncurrent Financing lease liabilities Long-term debt, less current portion 7.5 8.1 Operating lease liabilities Long-term lease liabilities, less current portion 23.0 32.7 Total lease liabilities $ 46.7 $ 53.6 The components of lease expense were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Lease Cost (Dollars in millions) Operating lease cost $ 2.5 $ 1.3 $ 7.4 $ 3.9 Financing lease cost: Depreciation of lease assets 0.3 0.3 1.0 1.0 Interest on lease liabilities 0.1 0.1 0.3 0.2 Sublease income ( 0.1 ) ( 0.6 ) ( 0.3 ) ( 1.9 ) Total lease cost, net $ 2.8 $ 1.1 $ 8.4 $ 3.2

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. Commitments and Contingencies Legal Matters We are subject to claims and a number of judicial and administrative proceedings considered normal in the course of our current and past operations, including employment-related disputes, contract disputes, disputes with our competitors, intellectual property disputes, government audits and proceedings, customer disputes, and tort claims. In some proceedings, the claimant seeks damages as well as other relief, which, if granted, would require substantial expenditures on our part. Our general terms and conditions in customer contracts frequently include a provision indicating we will indemnify and hold our customers harmless from and against any and all claims alleging that the services and materials furnished by us violate any third party’s patent, trade secret, copyright, or other intellectual property right. We are not aware of any material pending litigation concerning these indemnifications. Some of these matters raise difficult and complex factual and legal issues and are subject to many uncertainties, including the facts and circumstances of each particular action, and the jurisdiction, forum, and law under which each action is proceeding. Because of these complexities, final disposition of some of these proceedings may not occur for several years. As such, we are not always able to estimate the amount of our possible future liabilities, if any. There can be no certainty that we may not ultimately incur charges in excess of presently established or future financial accruals or insurance coverage. Although occasional adverse decisions or settlements may occur, it is management’s opinion that the final disposition of these proceedings will not, considering the merits of the claims and available resources or reserves and insurance, and based upon the facts and circumstances currently known, have a material adverse effect on our financial position or results of operations.

Net Loss per Share

Net Loss per Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Net Loss per Share	15. Net Loss per Share We compute net loss per share of common stock using the treasury stock method. The basic and diluted net loss per share computations were calculated as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in millions, except share and per share data) Numerator: Net loss $ ( 21.0 ) $ ( 20.9 ) $ ( 68.2 ) $ ( 65.9 ) Denominator: Weighted-average shares outstanding - basic 153,184,846 150,450,595 152,691,008 149,083,666 Effect of dilutive equity instruments — — — — Weighted-average shares outstanding - diluted 153,184,846 150,450,595 152,691,008 149,083,666 Net loss per share - basic $ ( 0.14 ) $ ( 0.14 ) $ ( 0.45 ) $ ( 0.44 ) Net loss per share - diluted $ ( 0.14 ) $ ( 0.14 ) $ ( 0.45 ) $ ( 0.44 ) The following potentially dilutive weighted-average shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Stock options 5,356,629 5,709,780 5,633,051 5,594,020 Restricted stock units 1,831,846 564,902 1,359,481 555,521 Performance stock units 1,430,383 912,970 1,370,918 735,166 The shares underlying the conversion option in the Convertible Senior Notes were not considered in the calculation of diluted net loss per share as the effect would have been anti-dilutive. Based on the initial conversion price, the entire outstanding principal amount of the Convertible Senior Notes as of September 30, 2022 would have been convertible into approximately 4.3 million shares of our common stock. Since we expect to settle the principal amount of the Convertible Senior Notes in cash, we use the treasury stock method for calculating any potential dilutive effect on diluted net income per share, if applicable. As a result, only the amount by which the conversion value exceeds the aggregate principal amount of the Convertible Senior Notes (the “conversion spread”) is considered in the diluted earnings per share computation. The conversion spread has a dilutive impact on diluted net income per share when the average market price of our common stock for a given period exceeds the initial conversion price of $ 132.20 per share for the Convertible Senior Notes. We excluded the potentially dilutive effect of the conversion spread of the Convertible Senior Notes as the average market price of our common stock during the three and nine months ended September 30, 2022 was less than the conversion price of the Convertible Senior Notes. In connection with the issuance of the Convertible Senior Notes, we entered into Capped Calls, which were not included for purposes of calculating the number of diluted shares outstanding, as their effect would have been anti-dilutive.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Accordingly, the unaudited condensed consolidated financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accounting policies we follow are set forth in Note 2, “Summary of Significant Accounting Policies,” to our audited consolidated financial statements in our 2021 Form 10-K . The following notes should be read in conjunction with these policies and other disclosures in our 2021 Form 10-K. In the opinion of management, the unaudited condensed consolidated financial statements contained herein reflect all adjustments (consisting only of normal recurring adjustments, except as set forth in these notes to condensed consolidated financial statements) necessary to present fairly in all material aspects the financial position, results of operations, comprehensive income (loss), and cash flows from all periods presented. Interim results are not necessarily indicative of results for a full year.
Deferred Costs	Deferred Costs Deferred costs, which primarily consist of deferred sales commissions, included within Other assets on our condensed consolidated balance sheets were $ 141.0 million and $ 144.5 million as of September 30, 2022, and December 31, 2021 , respectively. Amortization expense for the deferred costs was $ 13.1 million and $ 11.7 million for the three months ended September 30, 2022, and 2021 , respectively, and $ 38.5 million and $ 34.0 million for the nine months ended September 30, 2022, and 2021 , respectively.
Recently Issued and Adopted Accounting Pronouncements from the Financial Accounting Standards Board	Recently Issued and Adopted Accounting Pronouncements from the Financial Accounting Standards Board Standard Issuance Date Description Adoption Date Effect on the Financial Statements Accounting Standards Update ("ASU") 2020-06 , Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40) August 2020 This amendment simplifies the accounting for convertible instruments by removing certain separation models required under current GAAP for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost. January 2022 We adopted the guidance as of January 1, 2022 , using the modified retrospective method of transition. The adoption resulted in the elimination of the debt discount (and related deferred tax liability) that was recorded within equity related to our Convertible Senior Notes. The net impact of the adjustments was recorded to the opening balance of accumulated deficit and additional paid in capital. The impact to the condensed consolidated balance sheet was as follows: (1) increase of $ 92.9 million to long-term debt, (2) decrease of $ 77.7 million to additional paid-in capital, net of allocated issuance costs of $ 2.7 million and deferred tax impact of $ 28.2 million, and (3) decrease to accumulated deficit of $ 10.0 million. ASU 2020-04 , Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting March 2020 This amendment provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Not yet adopted This amendment may be elected over time through December 31, 2022 as reference rate reform activities occur. We do not expect the adoption of this guidance to have a significant impact on our financial statements.

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2022
ADAM HCM [Member]
Business Acquisition [Line Items]
Schedule of Major Classes of Assets and Liabilities Allocated to Purchase Price	The major classes of assets and liabilities to which we have allocated the purchase price were as follows: (Dollars in millions) Cash and equivalents $ 0.2 Trade receivables, prepaid expenses, and other current assets 0.9 Goodwill 24.0 Other intangible assets 10.8 Other assets 0.2 Accounts payable and other current liabilities ( 1.6 ) Total purchase price $ 34.5

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	Our financial assets and liabilities measured at fair value on a recurring basis were categorized as follows: September 30, 2022 Level 1 Level 2 Level 3 Total (Dollars in millions) Assets Available for sale customer funds assets $ — $ 1,977.3 (a) $ — $ 1,977.3 Total assets measured at fair value $ — $ 1,977.3 $ — $ 1,977.3 Liabilities DataFuzion contingent consideration $ — $ — $ 9.2 (b) $ 9.2 Total liabilities measured at fair value $ — $ — $ 9.2 $ 9.2 December 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in millions) Assets Available for sale customer funds assets $ — $ 1,952.4 (a) $ — $ 1,952.4 Total assets measured at fair value $ — $ 1,952.4 $ — $ 1,952.4 Liabilities DataFuzion contingent consideration $ — $ — $ 6.0 (b) $ 6.0 Total liabilities measured at fair value $ — $ — $ 6.0 $ 6.0 (a) Fair value is based on inputs that are observable for the asset or liability, other than quoted prices. (b) For the contingent consideration related to the 2021 acquisition of certain assets and liabilities of DataFuzion HCM, Inc. ("DataFuzion"), we utilize an option pricing model, specifically a Black-Scholes-Merton model, to estimate the fair value of the contingent liability as of the reporting dates. This model uses certain assumptions related to risk-free rates and volatility as well as certain judgments in forecasting annual recurring revenue. The contingent consideration has been measured as Level 3 given the unobservable inputs that are significant to the measurement of liability. The contingent consideration is included within other liabilities in our condensed consolidated balance sheets.

Customer Funds (Tables)

Customer Funds (Tables)	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Values of Investments of Customer Funds Available for Sale	The amortized cost of customer funds as of September 30, 2022, and December 31, 2021, is the original cost of assets acquired. The amortized cost and fair values of investments of customer funds available for sale were as follows: September 30, 2022 Amortized Gross Unrealized Fair Cost Gain Loss Value (Dollars in millions) Money market securities, investments carried at cost $ 2,346.0 $ — $ — 2,346.0 Available for sale investments: U.S. government and agency securities 701.4 — ( 55.2 ) 646.2 Canadian and provincial government securities 428.3 0.1 ( 17.5 ) 410.9 Corporate debt securities 653.6 0.4 ( 38.1 ) 615.9 Asset-backed securities 169.2 — ( 5.9 ) 163.3 Mortgage-backed securities 15.1 — ( 0.8 ) 14.3 Other short-term investments 58.4 — — 58.4 Other securities 74.4 — ( 6.1 ) 68.3 Total available for sale investments 2,100.4 0.5 ( 123.6 ) 1,977.3 Invested customer funds 4,446.4 $ 0.5 $ ( 123.6 ) 4,323.3 Receivables 10.2 12.0 Total customer funds $ 4,456.6 $ 4,335.3 December 31, 2021 Amortized Gross Unrealized Fair Cost Gain Loss Value (Dollars in millions) Money market securities, investments carried at cost $ 1,562.4 $ — $ — $ 1,562.4 Available for sale investments: U.S. government and agency securities 697.8 9.5 ( 5.8 ) 701.5 Canadian and provincial government securities 399.9 5.3 ( 1.3 ) 403.9 Corporate debt securities 551.4 8.3 ( 3.1 ) 556.6 Asset-backed securities 174.2 1.5 ( 0.3 ) 175.4 Mortgage-backed securities 2.7 — — 2.7 Other short-term investments 41.4 — — 41.4 Other securities 71.7 — ( 0.8 ) 70.9 Total available for sale investments 1,939.1 24.6 ( 11.3 ) 1,952.4 Invested customer funds 3,501.5 $ 24.6 $ ( 11.3 ) 3,514.8 Receivables 18.4 21.0 Total customer funds $ 3,519.9 $ 3,535.8
Schedule of Unrealized Losses and Fair Value	The following represents the gross unrealized losses and the related fair value of the investments of customer funds available for sale, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. September 30, 2022 Less than 12 months 12 months or more Total Unrealized Fair Unrealized Fair Unrealized Fair (Dollars in millions) U.S. government and agency securities $ ( 27.1 ) $ 413.3 $ ( 28.1 ) $ 230.0 $ ( 55.2 ) $ 643.3 Canadian and provincial government securities ( 11.9 ) 344.8 ( 5.6 ) 58.4 ( 17.5 ) 403.2 Corporate debt securities ( 24.1 ) 488.0 ( 14.0 ) 116.1 ( 38.1 ) 604.1 Asset-backed securities ( 4.5 ) 136.0 ( 1.4 ) 25.8 ( 5.9 ) 161.8 Mortgage-backed securities ( 0.8 ) 14.3 — — ( 0.8 ) 14.3 Other securities ( 2.3 ) 31.6 ( 3.8 ) 36.6 ( 6.1 ) 68.2 Total available for sale investments $ ( 70.7 ) $ 1,428.0 $ ( 52.9 ) $ 466.9 $ ( 123.6 ) $ 1,894.9
Schedule of Amortized Cost and Fair Value of Investment Securities Available for Sale by Contractual Maturity	The amortized cost and fair value of investment securities available for sale at September 30, 2022, by contractual maturity are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or to prepay obligations with or without call or prepayment penalties. September 30, 2022 Cost Fair Value (Dollars in millions) Due in one year or less $ 2,734.6 $ 2,731.8 Due in one to three years 649.4 618.8 Due in three to five years 819.6 753.6 Due after five years 242.8 219.1 Invested customer funds $ 4,446.4 $ 4,323.3

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Goodwill	Goodwill and changes therein were as follows: (Dollars in millions) Balance at December 31, 2020 $ 2,031.8 Acquisitions 308.2 Translation ( 16.4 ) Balance at December 31, 2021 2,323.6 Acquisition (a) 0.5 Translation ( 62.3 ) Balance at September 30, 2022 $ 2,261.8 a) The purchase accounting was finalized for the ADAM HCM acquisition during the second quarter of 2022. Refer to Note 3, "Business Combinations" to our condensed consolidated financial statements for additional information.
Schedule of Intangible Assets	Intangible assets consisted of the following: September 30, 2022 Gross Carrying Accumulated Net Estimated Life (Dollars in millions) Customer lists and relationships $ 295.1 $ ( 224.3 ) $ 70.8 4 - 12 Trade name 182.9 ( 4.0 ) 178.9 3 - 5 and Indefinite Technology 223.8 ( 175.1 ) 48.7 3 - 5 Total other intangible assets $ 701.8 $ ( 403.4 ) $ 298.4 December 31, 2021 Gross Carrying Accumulated Net Estimated Life (Dollars in millions) Customer lists and relationships $ 308.4 $ ( 220.4 ) $ 88.0 4 - 12 Trade name 184.4 ( 3.2 ) 181.2 3 - 5 and Indefinite Technology 233.9 ( 170.6 ) 63.3 3 - 5 Total other intangible assets $ 726.7 $ ( 394.2 ) $ 332.5

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Debt Obligations	Our debt obligations consisted of the following as of the periods presented: September 30, December 31, 2022 2021 (Dollars in millions) Term Debt, interest rate of 5.6 % and 2.6 %, respectively $ 652.8 $ 657.9 Revolving Credit Facility ($ 300.0 million available capacity less amounts reserved for 2.0 million and $ 2.1 million, respectively) — — Convertible Senior Notes, interest rate of 0.25 % 575.0 575.0 Australia Line of Credit (AUD $ 1.5 million and $ 2.9 million letter of credit capacity, respectively, which were fully utilized; USD $ 1.0 million and USD $ 2.1 million, respectively) — — Financing lease liabilities (Please refer to Note 13) 8.8 9.6 Total debt 1,236.6 1,242.5 Less unamortized discount on Term Debt and Convertible Senior Notes (a) 0.7 95.5 Less unamortized debt issuance costs on Term Debt and Convertible Senior Notes (a) 13.7 14.3 Less current portion of long-term debt 8.1 8.3 Long-term debt, less current portion $ 1,214.1 $ 1,124.4 a) We adopted ASU 2020-06 as of January 1, 2022. The unamortized discount and debt issuance costs on the Convertible Senior Notes is presented post-adoption of ASU 2020-06 as of September 30, 2022 and is presented pre-adoption of ASU 2020-06 as of December 31, 2021. Refer to the Convertible Senior Notes section below for further discussion of the impacts of the adoption of ASU 2020-06 on our condensed consolidated financial statements.
Schedule of Convertible Senior Notes	The following table presents details of the Convertible Senior Notes: Initial Conversion Rate per $ 1,000 Principal Initial Conversion Price per Share Convertible Senior Notes 7.5641 shares $ 132.20
Summary of Interest Expense Recognized Related to Notes	Interest expense recognized related to the Convertible Senior Notes was as follows: Three Months Ended September 30, 2022 Three Months Ended September 30, 2021 Nine Months Ended September 30, 2022 Nine Months Ended September 30, 2021 (Post-adoption of ASU 2020-06) (Pre-adoption of ASU 2020-06) (Post-adoption of ASU 2020-06) (Pre-adoption of ASU 2020-06) (Dollars in millions) Contractual interest expense $ 0.4 $ 0.4 $ 1.0 $ 0.9 Amortization of debt discount — 4.4 — 9.5 Amortization of debt issuance costs 0.6 0.5 2.0 1.1 Total $ 1.0 $ 5.3 $ 3.0 $ 11.5
Schedule of Future Principal Payments and Maturities of Indebtedness, Excluding Financing Lease Obligations	The future principal payments and maturities of our indebtedness, excluding financing lease obligations, are as follows: Years Ending December 31, Amount (Dollars in millions) 2022 $ 1.7 2023 6.8 2024 6.8 2025 637.5 2026 575.0 $ 1,227.8

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Components of Net Periodic Cost for Defined Benefit Pension Plan and for Postretirement Benefit Plan	The components of net periodic cost for our defined benefit pension plan and for our postretirement benefit plan are included in the following tables: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Net Periodic Pension Cost (Dollars in millions) Interest cost $ 2.2 $ 1.7 $ 6.6 $ 5.1 Actuarial loss amortization 3.4 4.4 10.2 13.0 Less: Expected return on plan assets ( 4.0 ) ( 3.3 ) ( 11.9 ) ( 9.9 ) Net periodic pension cost $ 1.6 $ 2.8 $ 4.9 $ 8.2 Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Net Periodic Postretirement Benefit (Dollars in millions) Interest cost $ 0.1 $ — $ 0.2 $ 0.1 Actuarial gain amortization ( 0.5 ) ( 0.5 ) ( 1.5 ) ( 1.5 ) Prior service credit amortization — ( 0.1 ) — ( 0.2 ) Net periodic postretirement benefit gain $ ( 0.4 ) $ ( 0.6 ) $ ( 1.3 ) $ ( 1.6 )

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Summary of Performance-Based Stock Option Activity	Performance-based stock option activity under the 2013 SIP and the 2018 EIP was as follows: Shares Weighted Weighted Aggregate Performance-based options outstanding at December 31, 2021 1,777,050 $ 64.72 8.3 $ 70.6 Granted — — — — Exercised ( 12,755 ) ( 13.46 ) — — Forfeited or expired ( 1,857 ) ( 13.46 ) — — Performance-based options outstanding at September 30, 2022 1,762,438 $ 65.15 7.6 $ 0.2 Performance-based options exercisable at September 30, 2022 262,438 $ 64.50 7.7 $ 0.2
Summary of Performance Stock Units	PSU activity under the 2018 EIP was as follows: Shares PSUs outstanding at December 31, 2021 318,745 Granted 582,662 Shares issued upon vesting of PSUs ( 168,414 ) Forfeited or canceled ( 22,069 ) PSUs outstanding at September 30, 2022 710,924 PSUs releasable at September 30, 2022 —
Summary of Restricted Stock Units Activity	RSU activity under the 2013 SIP and the 2018 EIP was as follows: Shares RSUs outstanding at December 31, 2021 1,935,939 Granted 1,507,286 Shares issued upon vesting of RSUs ( 456,617 ) Forfeited or canceled ( 140,140 ) RSUs outstanding at September 30, 2022 2,846,468 RSUs releasable at September 30, 2022 660,613
Summary of Term-Based Stock Option Activity	Term-based stock option activity under the 2013 SIP and the 2018 EIP was as follows: Shares Weighted Weighted Aggregate Term-based options outstanding at December 31, 2021 8,515,869 $ 48.87 7.3 $ 473.4 Granted 81,145 56.29 — — Exercised ( 693,875 ) ( 32.70 ) — — Forfeited or expired ( 345,114 ) ( 58.31 ) — — Term-based options outstanding at September 30, 2022 7,558,025 $ 50.00 6.6 $ 84.4 Term-based options exercisable at September 30, 2022 5,169,434 $ 43.57 6.3 $ 78.8
Summary of Global Employee Stock Purchase Plan Activity	Our GESPP activity was as follows: Period Ended Shares Issued Purchase Price March 31, 2022 56,208 $ 58.11 June 30, 2022 84,541 40.02 September 30, 2022 59,599 47.50

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Summary of Disaggregation of Revenue	Disaggregation of Revenue Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in millions) Revenue: Cloud Dayforce Recurring $ 207.8 $ 160.3 $ 590.7 $ 456.2 Professional services and other 46.4 38.4 134.2 113.2 Total Dayforce revenue 254.2 198.7 724.9 569.4 Powerpay Recurring 22.6 20.7 66.5 61.5 Professional services and other 0.1 0.2 0.4 0.8 Total Powerpay revenue 22.7 20.9 66.9 62.3 Total Cloud revenue 276.9 219.6 791.8 631.7 Bureau Recurring 33.4 34.0 105.6 101.4 Professional services and other 5.3 3.6 12.7 9.0 Total Bureau revenue 38.7 37.6 118.3 110.4 Total revenue $ 315.6 $ 257.2 $ 910.1 $ 742.1
Schedule of Changes in Deferred Revenue	Deferred revenue primarily consists of payments received in advance of revenue recognition. The changes in deferred revenue were as follows: Nine Months Ended September 30, 2022 2021 (Dollars in millions) Deferred revenue, beginning of period $ 48.7 $ 24.4 New billings 483.2 399.6 Acquired billings — 17.0 Revenue recognized ( 486.5 ) ( 394.0 ) Effect of exchange rate ( 2.8 ) ( 0.5 ) Deferred revenue, end of period $ 42.6 $ 46.5

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss were as follows: Foreign Unrealized Gain Pension Total (Dollars in millions) Balance as of December 31, 2021 $ ( 177.3 ) $ 2.8 $ ( 150.3 ) $ ( 324.8 ) Other comprehensive (loss) income before income taxes and reclassifications ( 80.3 ) ( 139.9 ) 0.2 ( 220.0 ) Income tax benefit (expense) — 37.2 ( 2.4 ) 34.8 Reclassifications to earnings — — 8.7 8.7 Other comprehensive (loss) income ( 80.3 ) ( 102.7 ) 6.5 ( 176.5 ) Balance as of September 30, 2022 $ ( 257.6 ) $ ( 99.9 ) $ ( 143.8 ) $ ( 501.3 )

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: Lease Type Balance Sheet Classification September 30, 2022 December 31, 2021 (Dollars in millions) ASSETS Operating lease assets Trade and other receivables, net $ 0.1 $ 0.2 Operating lease assets Prepaid expenses and other current assets 2.6 3.4 Operating lease assets Right of use lease asset 27.5 29.4 Financing lease assets Property, plant, and equipment, net 7.3 8.3 Total lease assets $ 37.5 $ 41.3 LIABILITIES Current Financing lease liabilities Current portion of long-term debt $ 1.3 $ 1.5 Operating lease liabilities Current portion of long-term lease liabilities 14.9 11.3 Noncurrent Financing lease liabilities Long-term debt, less current portion 7.5 8.1 Operating lease liabilities Long-term lease liabilities, less current portion 23.0 32.7 Total lease liabilities $ 46.7 $ 53.6
Components of Lease Expense	The components of lease expense were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Lease Cost (Dollars in millions) Operating lease cost $ 2.5 $ 1.3 $ 7.4 $ 3.9 Financing lease cost: Depreciation of lease assets 0.3 0.3 1.0 1.0 Interest on lease liabilities 0.1 0.1 0.3 0.2 Sublease income ( 0.1 ) ( 0.6 ) ( 0.3 ) ( 1.9 ) Total lease cost, net $ 2.8 $ 1.1 $ 8.4 $ 3.2

Net Loss per Share (Tables)

Net Loss per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Schedule of Computations of Basic and Diluted Net Loss per Share	The basic and diluted net loss per share computations were calculated as follows: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (Dollars in millions, except share and per share data) Numerator: Net loss $ ( 21.0 ) $ ( 20.9 ) $ ( 68.2 ) $ ( 65.9 ) Denominator: Weighted-average shares outstanding - basic 153,184,846 150,450,595 152,691,008 149,083,666 Effect of dilutive equity instruments — — — — Weighted-average shares outstanding - diluted 153,184,846 150,450,595 152,691,008 149,083,666 Net loss per share - basic $ ( 0.14 ) $ ( 0.14 ) $ ( 0.45 ) $ ( 0.44 ) Net loss per share - diluted $ ( 0.14 ) $ ( 0.14 ) $ ( 0.45 ) $ ( 0.44 )
Schedule of Potentially Dilutive Weighted Average Shares Excluded from Calculation of Diluted Net Loss per Share	The following potentially dilutive weighted-average shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Stock options 5,356,629 5,709,780 5,633,051 5,594,020 Restricted stock units 1,831,846 564,902 1,359,481 555,521 Performance stock units 1,430,383 912,970 1,370,918 735,166

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jan. 01, 2022	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Amortization expense for the deferred costs	$ 13.1	$ 11.7	$ 38.5	$ 34
Decrease in additional paid-in capital	2,918.4		2,918.4			$ 2,860
Decrease to accumulated deficit	$ (367.4)		$ (367.4)			(309.2)
ASU 2020-06 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2022		Jan. 01, 2022
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true		true
ASU 2020-06 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Significant Accounting Policies [Line Items]
Increase in long-term debt					$ 92.9
Decrease in additional paid-in capital					(77.7)
Allocated issuance costs					2.7
Deferred tax impact					28.2
Decrease to accumulated deficit					$ (10)
Other Assets [Member]
Significant Accounting Policies [Line Items]
Deferred costs	$ 141		$ 141			$ 144.5

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - ADAM HCM [Member] - USD ($) $ in Millions	Dec. 03, 2021	Jun. 30, 2022
Business Acquisition [Line Items]
Percentage of voting interest	100%
Purchase price	$ 34.5
Intangible assets		$ 10.8
Goodwill, amount deductible for income tax		24
Trade Name [Member]
Business Acquisition [Line Items]
Intangible assets		0.4
Customer Relationships [Member ]
Business Acquisition [Line Items]
Intangible assets		7.5
Developed Technology Intangible [Member]
Business Acquisition [Line Items]
Intangible assets		$ 2.9

Business Combinations - Schedul

Business Combinations - Schedule of Major Classes of Assets and Liabilities Allocated to Purchase Price (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 2,261.8		$ 2,323.6	$ 2,031.8
ADAM HCM [Member]
Business Acquisition [Line Items]
Cash and equivalents		$ 0.2
Trade receivables, prepaid expenses, and other current assets		0.9
Goodwill		24
Other intangible assets		10.8
Other assets		0.2
Accounts payable and other current liabilities		(1.6)
Total purchase price		$ 34.5

Fair Value Measurements - Asset

Fair Value Measurements - Asset and Liability Measured at Fair Value Measured on Recurring Basis (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Assets
Available for sale customer funds assets		$ 1,977.3	$ 1,952.4
Total assets measured at fair value		1,977.3	1,952.4
Liabilities
DataFuzion contingent consideration		9.2	6
Total liabilities measured at fair value		9.2	6
Fair Value, Inputs, Level 2 [Member]
Assets
Available for sale customer funds assets	[1]	1,977.3	1,952.4
Total assets measured at fair value		1,977.3	1,952.4
Fair Value, Inputs, Level 3 [Member]
Liabilities
DataFuzion contingent consideration	[2]	9.2	6
Total liabilities measured at fair value		$ 9.2	$ 6
[1] Fair value is based on inputs that are observable for the asset or liability, other than quoted prices. For the contingent consideration related to the 2021 acquisition of certain assets and liabilities of DataFuzion HCM, Inc. ("DataFuzion"), we utilize an option pricing model, specifically a Black-Scholes-Merton model, to estimate the fair value of the contingent liability as of the reporting dates. This model uses certain assumptions related to risk-free rates and volatility as well as certain judgments in forecasting annual recurring revenue. The contingent consideration has been measured as Level 3 given the unobservable inputs that are significant to the measurement of liability. The contingent consideration is included within other liabilities in our condensed consolidated balance sheets.

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Change in fair value of contingent consideration	$ 1.2	$ 3.2

Customer Funds - Additional Inf

Customer Funds - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Investment income from invested customer funds included in recurring revenue	$ 21.3	$ 9.9	$ 47.4	$ 31

Customer Funds - Investment of

Customer Funds - Investment of Customer Funds (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Money market securities, investments carried at cost and other cash equivalents, Fair Value	$ 2,346	$ 1,562.4
Invested customer funds, Fair Value	4,323.3	3,514.8
Receivables, Fair Value	12	21
Total customer funds, Fair Value	4,335.3	3,535.8
Money market securities, investments carried at cost and other cash equivalents, Amortized Cost	2,346	1,562.4
Invested customer funds, Amortized Cost	4,446.4	3,501.5
Receivables, Amortized Cost	10.2	18.4
Total customer funds, Amortized Cost	4,456.6	3,519.9
Amortized Cost	2,100.4	1,939.1
Gross Unrealized Gain	0.5	24.6
Gross Unrealized Loss	(123.6)	(11.3)
Fair value	1,977.3	1,952.4
U.S. Government and Agencies Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	701.4	697.8
Gross Unrealized Gain		9.5
Gross Unrealized Loss	(55.2)	(5.8)
Fair value	646.2	701.5
Canadian and Provincial Government Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	428.3	399.9
Gross Unrealized Gain	0.1	5.3
Gross Unrealized Loss	(17.5)	(1.3)
Fair value	410.9	403.9
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	653.6	551.4
Gross Unrealized Gain	0.4	8.3
Gross Unrealized Loss	(38.1)	(3.1)
Fair value	615.9	556.6
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	169.2	174.2
Gross Unrealized Gain		1.5
Gross Unrealized Loss	(5.9)	(0.3)
Fair value	163.3	175.4
Mortgage-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15.1	2.7
Gross Unrealized Loss	(0.8)
Fair value	14.3	2.7
Other Short-Term Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	58.4	41.4
Fair value	58.4	41.4
Other Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	74.4	71.7
Gross Unrealized Loss	(6.1)	(0.8)
Fair value	$ 68.3	$ 70.9

Customer Funds - Gross Unrealiz

Customer Funds - Gross Unrealized Losses and Related Fair Value of Investment (Detail) $ in Millions	Sep. 30, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	$ (70.7)
Less than 12 months, Fair Value	1,428
12 months or more, Unrealized Losses	(52.9)
12 months or more, Fair Value	466.9
Total, Unrealized Losses	(123.6)
Total, Fair Value	1,894.9
U.S. Government and Agencies Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(27.1)
Less than 12 months, Fair Value	413.3
12 months or more, Unrealized Losses	(28.1)
12 months or more, Fair Value	230
Total, Unrealized Losses	(55.2)
Total, Fair Value	643.3
Canadian and Provincial Government Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(11.9)
Less than 12 months, Fair Value	344.8
12 months or more, Unrealized Losses	(5.6)
12 months or more, Fair Value	58.4
Total, Unrealized Losses	(17.5)
Total, Fair Value	403.2
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(24.1)
Less than 12 months, Fair Value	488
12 months or more, Unrealized Losses	(14)
12 months or more, Fair Value	116.1
Total, Unrealized Losses	(38.1)
Total, Fair Value	604.1
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(4.5)
Less than 12 months, Fair Value	136
12 months or more, Unrealized Losses	(1.4)
12 months or more, Fair Value	25.8
Total, Unrealized Losses	(5.9)
Total, Fair Value	161.8
Mortgage-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(0.8)
Less than 12 months, Fair Value	14.3
Total, Unrealized Losses	(0.8)
Total, Fair Value	14.3
Other Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Unrealized Losses	(2.3)
Less than 12 months, Fair Value	31.6
12 months or more, Unrealized Losses	(3.8)
12 months or more, Fair Value	36.6
Total, Unrealized Losses	(6.1)
Total, Fair Value	$ 68.2

Customer Funds - Amortized Cost

Customer Funds - Amortized Cost and Fair Value of Investment Security Available for Sale (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Cost	$ 2,734.6
Due in one to three years, Cost	649.4
Due in three to five years, Cost	819.6
Due after five years, Cost	242.8
Invested customer funds, Cost	4,446.4	$ 3,501.5
Due in one year or less, Fair Value	2,731.8
Due in one to three years, Fair Value	618.8
Due in three to five years, Fair Value	753.6
Due after five years, Fair Value	219.1
Invested customer funds, Fair Value	$ 4,323.3	$ 3,514.8

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Changes in Goodwill (Detail) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2022		Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Balance	$ 2,323.6		$ 2,031.8
Acquisition	0.5	[1]	308.2
Translation	(62.3)		(16.4)
Balance	$ 2,261.8		$ 2,323.6
[1] The purchase accounting was finalized for the ADAM HCM acquisition during the second quarter of 2022. Refer to Note 3, "Business Combinations" to our condensed consolidated financial statements for additional information.

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Intangible Asset (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 701.8	$ 726.7
Accumulated Amortization	(403.4)	(394.2)
Net	298.4	332.5
Trade Name [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	182.9	184.4
Accumulated Amortization	(4)	(3.2)
Net	$ 178.9	$ 181.2
Minimum [Member] | Trade Name [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	3 years	3 years
Maximum [Member] | Trade Name [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	5 years	5 years
Estimated Life Range (Years)	Indefinite	Indefinite
Customer Lists and Relationships [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 295.1	$ 308.4
Accumulated Amortization	(224.3)	(220.4)
Net	$ 70.8	$ 88
Customer Lists and Relationships [Member] | Minimum [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	4 years	4 years
Customer Lists and Relationships [Member] | Maximum [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	12 years	12 years
Technology [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 223.8	$ 233.9
Accumulated Amortization	(175.1)	(170.6)
Net	$ 48.7	$ 63.3
Technology [Member] | Minimum [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	3 years	3 years
Technology [Member] | Maximum [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Estimated Life Range (Years)	5 years	5 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Amortization expense	$ 7.5	$ 7.3	$ 22.9	$ 19.3
Ceridian Trade Name [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, carrying value	167.2		167.2
Dayforce Trade Name [Member]
Schedule of Finite and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, carrying value	$ 4.4		$ 4.4

Debt - Schedule of Debt Obligat

Debt - Schedule of Debt Obligations (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt excluding financing lease liabilities		$ 1,227.8
Financing lease liabilities		8.8	$ 9.6
Total debt		1,236.6	1,242.5
Less current portion of long-term debt		8.1	8.3
Long-term debt, less current portion		1,214.1	1,124.4
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Total debt excluding financing lease liabilities		575	575
Term Debt and Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Less unamortized discount on Term Debt and Convertible Senior Notes	[1]	0.7	95.5
Less unamortized debt issuance costs on Term Debt and Convertible Senior Notes	[1]	13.7	14.3
Term Debt [Member]
Debt Instrument [Line Items]
Total debt excluding financing lease liabilities		$ 652.8	$ 657.9
[1] We adopted ASU 2020-06 as of January 1, 2022. The unamortized discount and debt issuance costs on the Convertible Senior Notes is presented post-adoption of ASU 2020-06 as of September 30, 2022 and is presented pre-adoption of ASU 2020-06 as of December 31, 2021. Refer to the Convertible Senior Notes section below for further discussion of the impacts of the adoption of ASU 2020-06 on our condensed consolidated financial statements.

Debt - Schedule of Debt Oblig_2

Debt - Schedule of Debt Obligations (Parenthetical) (Detail) $ in Millions, $ in Millions	Sep. 30, 2022 USD ($)	Sep. 30, 2022 AUD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 AUD ($)	Mar. 31, 2021	Apr. 30, 2018 USD ($)
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on debt	0.25%	0.25%	0.25%	0.25%	0.25%
Term Debt [Member]
Debt Instrument [Line Items]
Interest rate on debt	5.60%	5.60%	2.60%	2.60%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Available capacity	$ 300		$ 300			$ 300
Revolving Credit Facility [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Available capacity	2		2.1
Foreign Line of Credit [Member] | Australia [Member]
Debt Instrument [Line Items]
Available capacity	$ 1		$ 2.1
Foreign Line of Credit [Member] | Australia [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Available capacity		$ 1.5		$ 2.9

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)			1 Months Ended	9 Months Ended
	Dec. 15, 2021	Dec. 14, 2021	Mar. 31, 2021	Sep. 30, 2022	Dec. 31, 2021	Apr. 30, 2018
Debt Instrument [Line Items]
Accrued interest and fees				$ 200,000	$ 500,000
Fair value of our indebtedness				1,086,100,000	$ 1,248,900,000
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Trading price per principal amount of notes				1,000
Capped Calls [Member]
Debt Instrument [Line Items]
Capped call initial strike price			$ 132.20
Capped call initial cap price			$ 179.26
Derivative, premium paid			$ 45,000,000
Reduction to additional paid-in capital			33,000,000
Net of deferred tax impact			12,000,000
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 575,000,000	$ 575,000,000
Debt instrument maturity date				Mar. 15, 2026
Debt instrument percentage of aggregate principal amount			0.25%
Debt instrument additional aggregate principal amount			$ 75,000,000
Debt instrument interest rate stated percentage			0.25%	0.25%	0.25%
Net proceeds from deducting initial purchase discounts and other debt issuance costs			$ 561,800,000
Debt instrument frequency of periodic payment				semiannually
Debt instrument payment terms				The Convertible Senior Notes bear interest at a rate of 0.25% per year and interest is payable semiannually in arrears on March 15 and September 15 of each year, beginning on September 15, 2021.
Debt instrument payment beginning date				Sep. 15, 2021
Debt instrument, convertible, carrying amount of equity component				$ 564,700,000
Debt issuance costs net				$ 10,300,000
Senior note, amortized interest rate				5.10%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Available capacity for letters of credit				$ 300,000,000	$ 300,000,000	$ 300,000,000
Line of credit maturity date	Jan. 29, 2025	Apr. 30, 2023
Term Debt [Member]
Debt Instrument [Line Items]
Debt instrument principal amount						$ 680,000,000
Debt instrument maturity date				Apr. 30, 2025
Debt instrument percentage of quarterly installment principal amount				0.25%
Debt instrument percentage of aggregate principal amount				1%
Debt instrument interest rate stated percentage				5.60%	2.60%

Debt - Schedule of Convertible

Debt - Schedule of Convertible Senior Notes (Detail) - Convertible Senior Notes [Member]	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Debt Instrument [Line Items]
Initial Conversion Rate per $1,000 Principal | shares	7.5641
Initial Conversion Price per Share | $ / shares	$ 132.20

Debt - Schedule of Convertibl_2

Debt - Schedule of Convertible Senior Notes (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2022 USD ($)
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Initial conversion per principal amount	$ 1,000

Debt - Summary of Interest Expe

Debt - Summary of Interest Expense Recognized Related to Notes (Detail) - Convertible Senior Notes [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Contractual interest expense	$ 0.4	$ 0.4	$ 1	$ 0.9
Amortization of debt discount		4.4		9.5
Amortization of debt issuance costs	0.6	0.5	2	1.1
Total	$ 1	$ 5.3	$ 3	$ 11.5

Debt - Schedule of Future Princ

Debt - Schedule of Future Principal Payments and Maturities of Indebtedness, Excluding Financing Lease Obligations (Detail) $ in Millions	Sep. 30, 2022 USD ($)
Debt Disclosure [Abstract]
2022	$ 1.7
2023	6.8
2024	6.8
2025	637.5
2026	575
Principal payments and maturities excluding financing lease obligations	$ 1,227.8

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Cost for Defined Benefit Pension Plan and for Postretirement Benefit Plan (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic pension cost			$ 3.6	$ 6.6
Defined Benefit Pension Plan [Member]
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 2.2	$ 1.7	6.6	5.1
Actuarial loss (gain) amortization	3.4	4.4	10.2	13
Less: Expected return on plan assets	(4)	(3.3)	(11.9)	(9.9)
Net periodic pension cost	1.6	2.8	4.9	8.2
Other Postretirement Benefits Plan [Member]
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	0.1		0.2	0.1
Actuarial loss (gain) amortization	(0.5)	(0.5)	(1.5)	(1.5)
Prior service credit amortization		(0.1)		(0.2)
Net periodic pension cost	$ (0.4)	$ (0.6)	$ (1.3)	$ (1.6)

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Feb. 24, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Feb. 23, 2022	Apr. 24, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense		$ 39.2	$ 29.4	$ 113.5	$ 83.6
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense related to unvested stock option awards not yet recognized		4.5		$ 4.5
Share-based compensation expense related to unvested awards expected to be recognized over a weighted average period				6 months
Term Based Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense related to unvested stock option awards not yet recognized		$ 37.8		$ 37.8
Share-based compensation expense related to unvested awards expected to be recognized over a weighted average period				9 months 18 days
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense related to unvested awards expected to be recognized over a weighted average period				1 year 6 months
Stock options, vested				519,294
Unvested restricted stock units outstanding		2,185,855		2,185,855
Vested restricted stock units outstanding		660,613		660,613
Share-based compensation expense related to unvested restricted stock units not yet recognized		$ 115.6		$ 115.6
Performance Stock Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense related to unvested PSUs not yet recognized		$ 22.7		$ 22.7
HCM Stock Incentive Plan 2013 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares outstanding		914,330		914,330
HCM Equity Incentive Plan 2018 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares outstanding		11,963,525		11,963,525
Share based compensation arrangement by share based payment award exercise period after employment termination				90 days
Stock option awards, contractual term				10 years
Shares reserved for issuance increase percentage						3%	3%
Shares available for future grants of equity awards		13,789,715		13,789,715
HCM Equity Incentive Plan 2018 [Member] | Share Based Compensation Award Tranche Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting period				3 years
HCM Equity Incentive Plan 2018 [Member] | Share-based Compensation Award, Tranche Three [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting period				4 years
HCM Equity Incentive Plan 2018 [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting period				1 year
HCM Equity Incentive Plan 2018 [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting period				5 years
2021 Management Incentive Plan [Member] | Share Based Compensation Award Tranche One [Member] | Performance Stock Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage				33.33%
Vesting date				Mar. 08, 2022
2021 Management Incentive Plan [Member] | Share Based Compensation Award Tranche Two [Member] | Performance Stock Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage				33.33%
Vesting date				Mar. 08, 2023
2021 Management Incentive Plan [Member] | Share-based Compensation Award, Tranche Three [Member] | Performance Stock Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage				33.33%
Vesting date				Mar. 08, 2024
HCM Global Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grants of equity awards		1,701,453		1,701,453
Description for purchase price of fair market value of common stock				The purchase price is the lower of 85% of the fair market value of a share of common stock on (i) January 1 or (ii) the purchase date.
Percentage of fair market value of a share of common stock on offering date or purchase date				85%
2022 Management Incentive Plan [Member] | Performance Stock Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum thresholds incentive vesting of PSUs	0%
Maximum percentage level achieving payout of PSUs	167%

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Performance-Based Stock Option Activity (Detail) - Performance Shares [Member] - Share Based Compensation Plans [Member] - USD ($) $ / shares in Units, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Shares
Options Outstanding at Beginning of Period	1,777,050
Options, Granted	0
Options, Exercised	(12,755)
Options, Forfeited or expired	(1,857)
Options Outstanding at End of Period	1,762,438	1,777,050
Options Exercisable at End of Period	262,438
Weighted Average Exercise Price (per share)
Weighted Average Exercise Price at Beginning of Period	$ 64.72
Weighted Average Exercise Price, Granted	0
Weighted Average Exercise Price, Exercised	(13.46)
Weighted Average Exercise Price, Forfeited or expired	(13.46)
Weighted Average Exercise Price at End of Period	65.15	$ 64.72
Weighted Average Exercise Price Exercisable at End of Period	$ 64.50
Weighted Average Remaining Contractual Term (in years)
Weighted Average Remaining Contractual Term (in years)	7 years 7 months 6 days	8 years 3 months 18 days
Weighted Average Remaining Contractual Term Exercisable (in years)	7 years 8 months 12 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Options Outstanding	$ 0.2	$ 70.6
Aggregate Intrinsic Value, Options Exercisable	$ 0.2

Share-Based Compensation - Su_2

Share-Based Compensation - Summary of Performance Stock Units (Detail) - Performance Stock Units ("PSUs") [Member] - Share Based Compensation Plans [Member]	9 Months Ended
	Sep. 30, 2022 shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares, outstanding at Beginning of Period	318,745
Shares, Granted	582,662
Shares issued upon vesting	(168,414)
Shares, Forfeited or canceled	(22,069)
Shares, outstanding at End of Period	710,924
Shares, releasable at End of Period	0

Share-Based Compensation - Su_3

Share-Based Compensation - Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2022 shares
Restricted Stock Units
Shares issued upon vesting	(519,294)
Shares, outstanding at End of Period	2,185,855
Share Based Compensation Plans [Member]
Restricted Stock Units
Shares, outstanding at Beginning of Period	1,935,939
Shares, Granted	1,507,286
Shares issued upon vesting	(456,617)
Shares, Forfeited or canceled	(140,140)
Shares, outstanding at End of Period	2,846,468
Shares, releasable at End of Period	660,613

Share-Based Compensation - Su_4

Share-Based Compensation - Summary of Term-Based Stock Option Activity (Detail) - Term Based Stock Options [Member] - Share Based Compensation Plans [Member] - USD ($) $ / shares in Units, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Shares
Options Outstanding at Beginning of Period	8,515,869
Options, Granted	81,145
Options, Exercised	(693,875)
Options, Forfeited or expired	(345,114)
Options Outstanding at End of Period	7,558,025	8,515,869
Options Exercisable at End of Period	5,169,434
Weighted Average Exercise Price (per share)
Weighted Average Exercise Price at Beginning of Period	$ 48.87
Weighted Average Exercise Price, Granted	56.29
Weighted Average Exercise Price, Exercised	(32.70)
Weighted Average Exercise Price, Forfeited or expired	(58.31)
Weighted Average Exercise Price at End of Period	50	$ 48.87
Weighted Average Exercise Price Exercisable at End of Period	$ 43.57
Weighted Average Remaining Contractual Term (in years)
Weighted Average Remaining Contractual Term (in years)	6 years 7 months 6 days	7 years 3 months 18 days
Weighted Average Remaining Contractual Term Exercisable (in years)	6 years 3 months 18 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Options Outstanding	$ 84.4	$ 473.4
Aggregate Intrinsic Value, Options Exercisable	$ 78.8

Share-Based Compensation - Su_5

Share-Based Compensation - Summary of Global Employee Stock Purchase Plan Activity (Detail) - Common Stock [Member] - HCM Global Employee Stock Purchase Plan [Member] - $ / shares	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares Issued	59,599	84,541	56,208
Purchase Price (per share)	$ 47.50	$ 40.02	$ 58.11

Revenue - Summary of Disaggrega

Revenue - Summary of Disaggregation of Revenue (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 315.6	$ 257.2	$ 910.1	$ 742.1
Cloud Dayforce Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	207.8	160.3	590.7	456.2
Cloud Dayforce Professional Services and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	46.4	38.4	134.2	113.2
Cloud Dayforce Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	254.2	198.7	724.9	569.4
Cloud Powerpay Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	22.6	20.7	66.5	61.5
Cloud Powerpay Professional Services and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0.1	0.2	0.4	0.8
Cloud Powerpay Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	22.7	20.9	66.9	62.3
Cloud Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	276.9	219.6	791.8	631.7
Bureau Recurring Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	33.4	34	105.6	101.4
Bureau Professional Services and Other Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	5.3	3.6	12.7	9
Bureau Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 38.7	$ 37.6	$ 118.3	$ 110.4

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue [Line Items]
Contract asset	$ 69.2		$ 69.2		$ 62.7
Remaining performance obligation, description of practical expedient			In accordance with the practical expedient provided in ASC Topic 606, performance obligations that are billed and recognized as they are delivered, primarily professional services contracts that are on a time and materials basis, are excluded from the transaction price for remaining performance obligations disclosed above.
Recurring [Member]
Revenue [Line Items]
Float revenue	$ 21.3	$ 9.9	$ 47.4	$ 31

Revenue - Schedule of Changes i

Revenue - Schedule of Changes in Deferred Revenue (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Deferred revenue, beginning of period	$ 48.7	$ 24.4
New billings	483.2	399.6
Acquired billings		17
Revenue recognized	(486.5)	(394)
Effect of exchange rate	(2.8)	(0.5)
Deferred revenue, end of period	$ 42.6	$ 46.5

Revenue - Additional Informat_2

Revenue - Additional Information 1 (Detail) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01 $ in Millions	Sep. 30, 2022 USD ($)
Revenue [Line Items]
Remaining performance obligations recognition period	3 years
Revenue expected to be recognized, amount	$ 1,076.3

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 2,227.5
Other comprehensive (loss) income before income taxes and reclassifications	(220)
Income tax benefit (expense)	34.8
Reclassifications to earnings	8.7
Other comprehensive (loss) income	(176.5)
Ending balance	2,051.2
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(177.3)
Other comprehensive (loss) income before income taxes and reclassifications	(80.3)
Other comprehensive (loss) income	(80.3)
Ending balance	(257.6)
Unrealized Gain (Loss) from Invested Customer Funds [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	2.8
Other comprehensive (loss) income before income taxes and reclassifications	(139.9)
Income tax benefit (expense)	37.2
Other comprehensive (loss) income	(102.7)
Ending balance	(99.9)
Pension Liability Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(150.3)
Other comprehensive (loss) income before income taxes and reclassifications	0.2
Income tax benefit (expense)	(2.4)
Reclassifications to earnings	8.7
Other comprehensive (loss) income	6.5
Ending balance	(143.8)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(324.8)
Ending balance	$ (501.3)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Taxes [Line Items]
Valuation allowance	$ 45,400,000		$ 45,400,000
Income tax (benefit) expense	4,000,000	$ (8,500,000)	7,800,000	$ (13,900,000)
Tax expense attributable to global intangible low tax income			8,500,000
Tax expense attributable to share-based compensation			9,500,000
Current income tax benefit			(12,700,000)
Unrecognized tax benefits	0		$ 0		$ 0
Income tax examination description			With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2017.
Previous Acquisition [Member]
Income Taxes [Line Items]
Valuation allowance	31,000,000		$ 31,000,000
State [Member]
Income Taxes [Line Items]
Valuation allowance	$ 12,600,000		12,600,000
Base Erosion and Anti-Abuse Tax ("BEAT") [Member]
Income Taxes [Line Items]
Income tax (benefit) expense			$ 2,500,000

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Operating Leased Assets [Line Items]
Right of use lease asset	$ 27.5	$ 29.4
Financing lease assets noncurrent	$ 7.3	$ 8.3
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant, and equipment, net	Property, plant, and equipment, net
Total lease assets	$ 37.5	$ 41.3
Finance lease liability current	$ 1.3	$ 1.5
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt	Current portion of long-term debt
Operating lease liability current	$ 14.9	$ 11.3
Finance lease liability Noncurrent	$ 7.5	$ 8.1
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term debt, less current portion	Long-term debt, less current portion
Operating lease liability noncurrent	$ 23	$ 32.7
Total lease liabilities	46.7	53.6
Trade And Other Receivables Net [Member]
Operating Leased Assets [Line Items]
Operating lease assets current	0.1	0.2
Prepaid Expenses and Other Current Assets [Member]
Operating Leased Assets [Line Items]
Operating lease assets current	$ 2.6	$ 3.4

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease Cost
Operating lease cost	$ 2.5	$ 1.3	$ 7.4	$ 3.9
Financing lease cost:
Depreciation of lease assets	0.3	0.3	1	1
Interest on lease liabilities	0.1	0.1	0.3	0.2
Sublease income	(0.1)	(0.6)	(0.3)	(1.9)
Total lease cost, net	$ 2.8	$ 1.1	$ 8.4	$ 3.2

Net Loss per Share - Schedule o

Net Loss per Share - Schedule of Computations of Basic and Diluted Net Loss per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss	$ (21)	$ (19.8)	$ (27.4)	$ (20.9)	$ (25.8)	$ (19.2)	$ (68.2)	$ (65.9)
Denominator:
Weighted-average shares outstanding - basic	153,184,846			150,450,595			152,691,008	149,083,666
Weighted-average shares outstanding - diluted	153,184,846			150,450,595			152,691,008	149,083,666
Net loss per share - basic	$ (0.14)			$ (0.14)			$ (0.45)	$ (0.44)
Net loss per share - diluted	$ (0.14)			$ (0.14)			$ (0.45)	$ (0.44)

Net Loss per Share - Schedule_2

Net Loss per Share - Schedule of Potentially Dilutive Weighted Average Shares Excluded from Calculation of Diluted Net Loss per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	5,356,629	5,709,780	5,633,051	5,594,020
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	1,831,846	564,902	1,359,481	555,521
Performance Stock Units ("PSUs") [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	1,430,383	912,970	1,370,918	735,166

Net Loss per Share - Additional

Net Loss per Share - Additional Information (Detail) Unit in Millions	9 Months Ended
	Sep. 30, 2022 Unit $ / shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Convertible senior notes would have been convertible into shares of our common stock | Unit	4.3
Convertible Senior Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Initial Conversion Price per Share | $ / shares	$ 132.20