SS&C Technologies (SSNC) 10-Q 1 Aug 24 2024 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Jul. 24, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Registrant Name	SS&C TECHNOLOGIES HOLDINGS, INC.
Entity Central Index Key	0001402436
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-34675
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0987913
Entity Address, Address Line One	80 Lamberton Road
Entity Address, City or Town	Windsor
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06095
City Area Code	860
Local Phone Number	298-4500
Document Quarterly Report	true
Document Transition Report	false
Security12b Title	Common stock, par value $0.01 per share
Trading Symbol	SSNC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		245,419,928

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 462.7	$ 432.2
Funds receivable and funds held on behalf of clients	1,624.2	2,615.6
Accounts receivable, net of allowance for credit losses of $29.9 and $25.1, respectively	868.4	799.4
Contract asset	40.7	36.1
Prepaid expenses and other current assets	132.8	165.8
Restricted cash and cash equivalents	3.3	2.4
Total current assets	3,132.1	4,051.5
Property, plant and equipment, net (Note 2)	304.7	315.3
Operating lease right-of-use assets	203.9	221.4
Investments (Note 3)	181.2	184.7
Unconsolidated affiliates (Note 4)	337.1	345.2
Contract asset	101.7	99.7
Goodwill (Note 5)	8,935.3	8,969.5
Intangible and other assets, net of accumulated amortization of $4,354.1 and $4,063.4, respectively	3,709.2	3,915.2
Total assets	16,905.2	18,102.5
Current liabilities:
Current portion of long-term debt (Note 6)	39	51.5
Client funds obligations	1,624.2	2,615.6
Accounts payable	57.2	80.3
Income taxes payable	1	22.3
Accrued employee compensation and benefits	221.6	270.2
Interest payable	36.1	29.4
Other accrued expenses	229.7	232.3
Deferred revenues	482.9	470.3
Total current liabilities	2,691.7	3,771.9
Long-term debt, net of current portion (Note 6)	6,575.1	6,668.5
Operating lease liabilities	183	199.1
Other long-term liabilities	198.9	248.7
Deferred income taxes	769.7	816.6
Total liabilities	10,418.4	11,704.8
Commitments and contingencies (Note 13)
Stockholders' equity (Note7):
Preferred stock, $0.01 par value per share, 5.0 million shares authorized; no shares issued	0	0
Additional paid-in capital	5,557	5,371
Accumulated other comprehensive loss	(471.1)	(426.3)
Retained earnings	3,354.4	3,126.3
Cost of common stock in treasury, 33.8 and 29.3 million shares, respectively	(2,015.2)	(1,734.2)
Total SS&C stockholders' equity	6,427.9	6,339.6
Noncontrolling interest (Note 8)	58.9	58.1
Total equity	6,486.8	6,397.7
Total liabilities and equity	16,905.2	18,102.5
Class A Non-Voting Common Stock [Member]
Stockholders' equity (Note7):
Common stock	0	0
Common Stock Class Undefined [Member]
Stockholders' equity (Note7):
Common stock	$ 2.8	$ 2.8

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Allowance for doubtful accounts receivable	$ 29.9	$ 25.1
Accumulated amortization of finite-lived intangible assets	$ 4,354.1	$ 4,063.4
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	278,600,000	275,900,000
Common stock, shares outstanding	244,800,000	246,600,000
Treasury stock	33,800,000	29,300,000
Class A Non-Voting Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	0	0

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues:
Total revenues	$ 1,451.5	$ 1,362.6	$ 2,886.5	$ 2,725.3
Cost of revenues:
Total cost of revenues	753.2	721.5	1,481	1,447.2
Gross profit	698.3	641.1	1,405.5	1,278.1
Operating expenses:
Selling and marketing	142.6	137.1	283.5	276.9
Research and development	128.7	119.6	249.6	237.8
General and administrative	99.4	96.2	211.9	195.1
Total operating expenses	370.7	352.9	745	709.8
Operating income	327.6	288.2	660.5	568.3
Interest expense, net	(113.3)	(118)	(229.3)	(229.9)
Other income, net	0.6	14.9	7.2	20.3
Equity in earnings of unconsolidated affiliates, net	17.3	9.4	19.6	15.1
Loss on extinguishment of debt	(27.7)	0	(28.8)	(0.6)
Income before income taxes	204.5	194.5	429.2	373.2
Provision for income taxes	13.8	63.6	80.5	116.1
Net income	190.7	130.9	348.7	257.1
Net income attributable to noncontrolling interest	(0.4)	(0.2)	(0.8)	(0.4)
Net income attributable to SS&C common stockholders	$ 190.3	$ 130.7	$ 347.9	$ 256.7
Basic earnings per share attributable to SS&C common stockholders	$ 0.77	$ 0.53	$ 1.41	$ 1.03
Diluted earnings per share attributable to SS&C common stockholders	$ 0.75	$ 0.51	$ 1.38	$ 1
Basic weighted-average number of common shares outstanding	246.2	248.5	246.6	249.5
Diluted weighted-average number of common and common equivalent shares outstanding	252.3	255	252.7	256
Net income	$ 190.7	$ 130.9	$ 348.7	$ 257.1
Other comprehensive income (loss), net of tax:
Foreign currency exchange translation adjustment	2.7	66.2	(44.9)	108.2
Change in defined benefit pension obligation	0.1	(0.1)	0.1	0
Total other comprehensive income (loss), net of tax	2.8	66.1	(44.8)	108.2
Comprehensive income	193.5	197	303.9	365.3
Comprehensive income attributable to noncontrolling interest	(0.4)	(0.2)	(0.8)	(0.4)
Comprehensive income attributable to SS&C common stockholders	193.1	196.8	303.1	364.9
Software-enabled Services [Member]
Revenues:
Total revenues	1,192.4	1,106.5	2,380.1	2,220.7
Cost of revenues:
Total cost of revenues	654	628.6	1,287.8	1,259.6
License, Maintenance and Related
Revenues:
Total revenues	259.1	256.1	506.4	504.6
Cost of revenues:
Total cost of revenues	$ 99.2	$ 92.9	$ 193.2	$ 187.6

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flow from operating activities:
Net income	$ 348.7	$ 257.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	333	331.8
Equity in earnings of unconsolidated affiliates, net	(19.6)	(15.1)
Distributions received from unconsolidated affiliates	2.5	16.2
Stock-based compensation expense	95.7	75.4
Net losses (gains) on investments	0.6	(1.8)
Amortization and write-offs of loan origination costs and original issue discounts	5.2	6.9
Loss on extinguishment of debt	28.8	0.6
(Gain) loss on sale or disposition of property and equipment	(0.1)	6.9
Deferred income taxes	(49.4)	(52.7)
Provision for credit losses	9.7	8
Changes in operating assets and liabilities, excluding effects from acquisitions:
Accounts receivable	(83.3)	(28.2)
Prepaid expenses and other assets	16.5	62.7
Contract assets	(7.2)	9
Accounts payable	(37.4)	(5)
Accrued expenses and other liabilities	(90.2)	(106.4)
Income taxes prepaid and payable	(8.3)	0.9
Deferred revenue	20.2	17.9
Net cash provided by operating activities	565.4	584.2
Cash flow from investing activities:
Cash paid for business acquisitions, net of cash acquired and asset acquisitions	(0.9)	(0.1)
Additions to property and equipment	(15.8)	(24.2)
Proceeds from sale of property and equipment	3.2	0
Additions to capitalized software	(100.2)	(97.2)
Proceeds from sales / maturities of investments	0.2	2.1
Distributions received from unconsolidated affiliates	24.5	0
Collection of other non-current receivables	5	5
Net cash used in investing activities	(84)	(114.4)
Cash flow from financing activities:
Cash received from debt borrowings, net of original issue discount	4,745	175
Repayments of debt	(4,850.1)	(344.8)
Payment of deferred financing fees	(30)	0
Net decrease in client funds obligations	(1,151.6)	(613.6)
Proceeds from exercise of stock options	103.7	45.1
Withholding taxes paid related to equity award net share settlement	(14.9)	(1.6)
Purchases of common stock for treasury	(279.9)	(244.1)
Dividends paid on common stock	(119.8)	(101.2)
Net cash used in financing activities	(1,597.6)	(1,085.2)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(3.9)	0.6
Net decrease in cash, cash equivalents and restricted cash	(1,120.1)	(614.8)
Cash, cash equivalents and restricted cash, beginning of period	2,998.6	1,337.6
Cash, cash equivalents and restricted cash and cash equivalents, end of period	1,878.5	722.8
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents:
Cash and cash equivalents	462.7	439.7
Restricted cash and cash equivalents	3.3	2.5
Restricted cash and cash equivalents included in funds receivable and funds held on behalf of clients	1,412.5	280.6
Cash and cash equivalents and restricted cash	$ 1,878.5	$ 722.8

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interest
Beginning balance at Dec. 31, 2022	$ 6,100.8	$ 2.7	$ 5,111.6	$ 2,740.1	$ (550.1)	$ (1,260.1)	$ 56.6
Beginning balance, shares at Dec. 31, 2022		271,900,000
Net income	257.1			256.7			0.4
Foreign exchange translation adjustment	108.2				108.2
Stock-based compensation expense	75.4		75.4
Exercise of options, net of withholding taxes	43.6		43.6
Exercise of options, net of withholding taxes, shares		1,300,000
Purchases of common stock	(246.6)					(246.6)
Cash dividends declared	(101.2)			(101.2)
Ending balance at Jun. 30, 2023	6,237.3	$ 2.7	5,230.6	2,895.6	(441.9)	(1,506.7)	57
Ending balance, shares at Jun. 30, 2023		273,200,000
Beginning balance at Mar. 31, 2023	6,140.8	$ 2.7	5,168.7	2,815.4	(508)	(1,394.8)	56.8
Beginning balance, shares at Mar. 31, 2023		272,300,000
Net income	130.9			130.7			0.2
Foreign exchange translation adjustment	66.2				66.2
Change in defined benefit plan obligation	(0.1)				(0.1)
Stock-based compensation expense	33.5		33.5
Exercise of options, net of withholding taxes	28.4		28.4
Exercise of options, net of withholding taxes, shares		900,000
Purchases of common stock	(111.9)					(111.9)
Cash dividends declared	(50.5)			(50.5)
Ending balance at Jun. 30, 2023	6,237.3	$ 2.7	5,230.6	2,895.6	(441.9)	(1,506.7)	57
Ending balance, shares at Jun. 30, 2023		273,200,000
Beginning balance at Dec. 31, 2023	$ 6,397.7	$ 2.8	5,371	3,126.3	(426.3)	(1,734.2)	58.1
Beginning balance, shares at Dec. 31, 2023	275,900,000	275,900,000
Net income	$ 348.7			347.9			0.8
Foreign exchange translation adjustment	(44.9)				(44.9)
Change in defined benefit plan obligation	0.1				0.1
Stock-based compensation expense	95.7		95.7
Exercise of options, net of withholding taxes	89.6		89.6
Exercise of options, net of withholding taxes, shares		2,700,000
Purchases of common stock	(281)					(281)
Cash dividends declared	(119.1)		0.7	(119.8)
Ending balance at Jun. 30, 2024	$ 6,486.8	$ 2.8	5,557	3,354.4	(471.1)	(2,015.2)	58.9
Ending balance, shares at Jun. 30, 2024	278,600,000	278,600,000
Beginning balance at Mar. 31, 2024	$ 6,492.7	$ 2.8	5,468.2	3,224.2	(473.9)	(1,787.1)	58.5
Beginning balance, shares at Mar. 31, 2024		277,300,000
Net income	190.7			190.3			0.4
Foreign exchange translation adjustment	2.7				2.7
Change in defined benefit plan obligation	0.1				0.1
Stock-based compensation expense	50.6		50.6
Exercise of options, net of withholding taxes	37.7		37.7
Exercise of options, net of withholding taxes, shares		1,300,000
Purchases of common stock	(228.1)					(228.1)
Cash dividends declared	(59.6)		0.5	(60.1)
Ending balance at Jun. 30, 2024	$ 6,486.8	$ 2.8	$ 5,557	$ 3,354.4	$ (471.1)	$ (2,015.2)	$ 58.9
Ending balance, shares at Jun. 30, 2024	278,600,000	278,600,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share	$ 0.24	$ 0.2	$ 0.48	$ 0.4

Basis of Presentation and Princ

Basis of Presentation and Principles of Consolidation	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Principles of Consolidation	Note 1—Basis of Presentation and Principles of Consolidation The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). These accounting principles were applied on a basis consistent with those of the audited Consolidated Financial Statements contained in our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (the “SEC”) on February 28, 2024 (the “2023 Form 10-K”). In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments (consisting of only normal recurring adjustments, except as noted elsewhere in the notes to the Condensed Consolidated Financial Statements) necessary for a fair statement of our financial position as of June 30, 2024, the results of our operations for the three and six months ended June 30, 2024 and 2023, and our cash flows for the six months ended June 30, 2024 and 2023. These statements do not include all of the information and footnotes required by GAAP for annual financial statements. The Condensed Consolidated Financial Statements contained herein should be read in conjunction with the audited Consolidated Financial Statements and footnotes as of and for the year ended December 31, 2023, which were included in the 2023 Form 10-K. The December 31, 2023 Consolidated Balance Sheet data were derived from audited financial statements but do not include all disclosures required by GAAP for annual financial statements. The results of operations for the three and six months ended June 30, 2024 are not necessarily indicative of the expected results for any subsequent quarters or the full year. The accompanying unaudited condensed consolidated financial statements include the accounts of SS&C Technologies Holdings, Inc. and its subsidiaries, including a variable interest entity (“VIE”) for which we are the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. Recent Accounting Pronouncements Not Yet Effective In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The standard is applicable to all public entities, including public entities with a single reportable segment, and requires enhanced reportable segment disclosures. The disclosures include significant segment expenses regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss. The standard also requires disclosure of the title and position of the CODM as well as how the CODM uses the reported measures of a segment’s profit or loss to assess segment performance and decide how to allocate resources. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 31, 2024. Early adoption is permitted. We are currently evaluating the potential impact the standard will have on our disclosures. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (Topic 740) . The standard requires more enhanced disclosures specifically related to effective tax rate reconciliation and income taxes paid. The new requirements will be effective for fiscal years beginning after December 15, 2024, on a prospective basis. Early adoption and retrospective application are permitted. We are currently evaluating the potential impact the standard will have on our income tax disclosures.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	Note 2—Property, Plant and Equipment, net Property, plant and equipment and the related accumulated depreciation are as follows (in millions): June 30, December 31, 2024 2023 Land $ 37.6 $ 37.7 Building and improvements 268.0 265.5 Equipment, furniture, and fixtures 546.1 525.7 851.7 828.9 Less: accumulated depreciation ( 547.0 ) ( 513.6 ) Total property, plant and equipment, net $ 304.7 $ 315.3 Depreciation expense for the three and six months ended June 30, 2024 was $ 18.4 million and $ 36.3 million, respectively. Depreciation expense for the three and six months ended June 30, 2023 was $ 18.1 million and $ 37.1 million, respectively. As of June 30, 2024 and December 31, 2023, assets held for sale wer e $ 5.9 million and $ 9.0 million, respectively, and are presented in prepaid expenses and other current assets in our condensed consolidated balance sheet. Unpaid property, plant and equipment additions of $ 14.0 million and $ 2.9 million are included in accounts payable and other accrued expenses as of June 30, 2024 and December 31, 2023, respectively, in our condensed consolidated balance sheet.

Investments

Investments	6 Months Ended
	Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Investments	Note 3—Investments Investments are as follows (in millions): June 30, December 31, 2024 2023 Non-marketable equity securities $ 124.0 $ 124.0 Seed capital investments 25.9 26.1 Marketable equity securities 20.6 23.1 Partnership interests in private equity funds 10.7 11.5 Total investments $ 181.2 $ 184.7 There were no realized gains or losses for our equity securities in the three and six months ended June 30, 2024 and 2023 . Unrealized gains for our equity securities are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Unrealized (losses) gains on equity securities held as of the end of the period $ ( 0.7 ) $ 0.9 $ 0.2 $ 3.2 Fair Value Measurement Authoritative accounting guidance on fair value measurements establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions. As of June 30, 2024 and December 31, 2023, we held certain investment assets and certain liabilities that are required to be measured at fair value on a recurring basis. These investments include money market funds and marketable equity securities where fair value is determined using quoted prices in active markets. Accordingly, the fair value measurements of these investments have been classified as Level 1 in the tables below. Investments for which we elected net asset value as a practical expedient for fair value and investments measured using the fair value measurement alternative are excluded from the tables below. Fair value for deferred compensation liabilities that are credited with deemed gains or losses of the underlying hypothetical investments, primarily equity securities, have been classified as Level 1 in the tables below. The following tables present assets and liabilities measured at fair value on a recurring basis (in millions): Fair Value Measurements at Reporting Date Using June 30, 2024 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 1,420.2 $ 1,420.2 $ — $ — Seed capital investments (2) 25.9 25.9 — — Marketable equity securities (2) 20.6 20.6 — — Deferred compensation liabilities (3) ( 11.6 ) ( 11.6 ) — — Total $ 1,455.1 $ 1,455.1 $ — $ — Fair Value Measurements at Reporting Date Using December 31, 2023 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 2,212.6 $ 2,212.6 $ — $ — Seed capital investments (2) 26.1 26.1 — — Marketable equity securities (2) 23.1 23.1 — — Deferred compensation liabilities (3) ( 11.7 ) ( 11.7 ) — — Total $ 2,250.1 $ 2,250.1 $ — $ — (1) As of June 30, 2024 , included $ 130.8 million of cash and cash equivalents, $ 2.6 million of restricted cash and $ 1,286.8 million of funds receivable and funds held on behalf of clients on the Condensed Consolidated Balance Sheet. As of December 31, 2023 , included $ 131.7 million of cash and cash equivalents, $ 1.8 million of restricted cash and $ 2,079.1 million of funds receivable and funds held on behalf of clients on the Condensed Consolidated Balance Sheet. (2) Included in Investments on the Condensed Consolidated Balance Sheet . (3) Included in Other long-term liabilities on the Condensed Consolidated Balance Sheet . We have partnership interests in various private equity funds that are not included in the tables above. Our inve stments in private equity funds were $ 10.7 million and $ 11.5 million at June 30, 2024 and December 31, 2023 , respectively, of which $ 9.2 million in each year, were measured using net asset value as a practical expedient for fair value and $ 1.5 m illion and $ 2.3 million, respectively, were accounted for under the equity method of accounting. The investments in private equity funds represent underlying investments in domestic and international markets across various industry sectors. Generally, our investments in private equity funds are non-transferable or are subject to long holding periods, and withdrawals from the private equity firm partnerships are typically not permitted. The maximum risk of loss related to our private equity fund investments is limited to the carrying value of its investments in the entities.

Unconsolidated Affiliates

Unconsolidated Affiliates	6 Months Ended
	Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Unconsolidated Affiliates	Note 4—Unconsolidated Affiliates Investments in unconsolidated affiliates are as follows (in millions): June 30, 2024 December 31, 2023 Ownership Percentage Carrying Value Excess carrying value of investment over proportionate share of net assets Carrying Value Excess carrying value of investment over proportionate share of net assets Orbit Private Investments L.P. 9.8 % $ 202.2 $ — $ 211.6 $ — International Financial Data Services L.P. 50.0 % 70.4 29.7 68.3 31.4 Broadway Square Partners, LLP 50.0 % 52.9 29.1 53.4 29.5 Pershing Road Development Company, LLC 50.0 % 9.8 54.2 10.0 55.4 Other unconsolidated affiliates 1.8 — 1.9 — Total $ 337.1 $ 113.0 $ 345.2 $ 116.3 Investments in unconsolidated affiliates are accounted for under the equity method of accounting. We record our proportionate share of the results of the unconsolidated affiliates and amortization expense related to basis differences in Equity in earnings of unconsolidated affiliates, net on the Condensed Consolidated Statements of Comprehensive Income. Equity in earnings of unconsolidated affiliates, net are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Orbit Private Investments L.P. $ 16.2 $ 7.6 $ 17.4 $ 12.4 International Financial Data Services L.P. 1.5 1.4 3.0 2.5 Pershing Road Development Company, LLC ( 0.2 ) ( 0.7 ) ( 0.3 ) ( 0.9 ) Broadway Square Partners, LLP ( 0.2 ) ( 0.1 ) ( 0.5 ) — Other unconsolidated affiliates — 1.2 — 1.1 Total $ 17.3 $ 9.4 $ 19.6 $ 15.1 During the three months ended June 30, 2024, we received a distribution of $ 26.9 million from our unconsolidated affiliate, Orbit Private Investments L.P. which reduced our investment in the affiliate. We recorded the distribution as a $ 2.4 million operating cash inflow and a $ 24.5 million investing cash inflow in our condensed consolidated statements of cash flows due to the nature of the distribution.

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note 5—Goodwill The change in carrying value of goodwill as of and for the six months ended June 30, 2024 is as follows (in millions): Balance at December 31, 2023 $ 8,969.5 Adjustments to prior acquisitions 0.1 Effect of foreign currency translation ( 34.3 ) Balance at June 30, 2024 $ 8,935.3

Debt

Debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt	Note 6—Debt At June 30, 2024 and December 31, 2023, debt consisted of the following (in millions): June 30, December 31, 2024 2023 Senior secured credit facilities, weighted-average interest rate of 7.34 % and 7.35 %, respectively $ 3,900.0 $ 4,755.1 5.5 % senior notes due 2027 2,000.0 2,000.0 6.5 % senior notes due 2032 750.0 — Unamortized original issue discount and debt issuance costs ( 35.9 ) ( 35.1 ) 6,614.1 6,720.0 Less: current portion of long-term debt 39.0 51.5 Long-term debt $ 6,575.1 $ 6,668.5 The table below provides a summary of the key terms of our Senior Secured Credit Facilities and Senior Notes: Amount Outstanding Maturity Scheduled Quarterly (in millions) Date Payments Required Senior Secured Credit Facilities Term Loan B-8 $ 3,900.0 May 9, 2031 0.25 % Revolving Credit Facility — December 28, 2027 None 5.5 % Senior Notes 2,000.0 September 30, 2027 None 6.5 % Senior Notes 750.0 June 1, 2032 None Senior Secured Credit Facilities and Senior Notes On May 9, 2024, we entered into the Incremental Joinder & First Amendment to Credit Agreement (the “Amendment”) which amends our existing amended and restated credit agreement, dated as of April 16, 2018 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”). Pursuant to the Amendment, we borrowed $ 3,935.0 million in aggregate principal amount of incremental term B-8 loans (the “Term B-8 Loans”). The Term B-8 Loans bear interest at, at our option, the Base Rate (as defined in the Amendment), plus 1.00% per annum, or the Term SOFR Rate (as defined in the Amendment), plus 2.00% per annum. Also on May 9, 2024, we issued $ 750.0 million aggregate principal amount of 6.5 % Senior Notes due 2032 (the “6.5% Senior Notes”). The 6.5% Senior Notes are senior unsecured obligations and rank equal in right of payment with all of our existing and future senior indebtedness. The 6.5% Senior Notes are fully and unconditionally guaranteed, jointly and severally, by SS&C Holdings and all of its existing domestic restricted subsidiaries (other than SS&C Technologies) that guarantee our existing senior secured credit facilities and future domestic restricted subsidiaries that guarantee our existing senior secured credit facilities and certain other indebtedness. Interest on the 6.5% Senior Notes is payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2024. The net proceeds of the Term B-8 Loans and from the sale of the 6.5 % Senior Notes were used to repay all amounts owed under the term B-3 loans, the term B-4 loans, the term B-5 loans, the term B-6 loans and the term B-7 loans (together, the “Existing Term Loans”) under the Credit Agreement, as well as to pay related fees and expenses. Debt issuance costs and loss on extinguishment of debt We evaluated the borrowing of our Term B-8 Loans and issuance of 6.5 % Senior Notes and the repayment of our Existing Term Loans in accordance with FASB Accounting Standards Codification 470-50, Debt Modifications and Extinguishments . We determined that the new debt borrowing and issuance and existing debt repayment were two independent transactions due to the fact that (i) no single investor held a significant concentration of both the old and the new debt, (ii) none of the old investors were included in negotiations with creditors about modifying the old debt, and (iii) all lenders were provided the same opportunity to participate in the new debt regardless of whether they were an existing lender. Consequently, the refinancing was accounted for as a debt extinguishment. As a result, we capitalized an aggregate of $ 34.5 million in financing costs during the three months ended June 30, 2024, which represent new third-party costs. The Existing Term Loans borrowing costs of $ 27.7 million were expensed and are included in Loss on extinguishment of debt in the Condensed Consolidated Statement of Comprehensive Income during the three months ended June 30, 2024. Fair Value of Debt The carrying amounts and fair values of financial instruments are as follows (in millions): June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 3,873.8 $ 3,915.8 $ 4,722.7 $ 4,774.4 5.5 % senior notes due 2027 1,997.7 1,972.1 1,997.3 1,974.0 6.5 % senior notes due 2032 742.6 757.6 — — The above fair values, which are Level 2 liabilities, were computed based on comparable quoted market prices. The fair values of cash, accounts receivable, net, short-term borrowings, and accounts payable approximate the carrying amounts due to the short-term maturities of these instruments.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Stockholders' Equity	Note 7—Stockholders’ Equity Stock repurchase program In July 2023, our Board of Directors authorized a stock repurchase program, which enabled us to repurchase up to $ 1 billion in the aggregate of our outstanding common stock on the open market or in privately negotiated transactions until the one-year anniversary of the Board’s authorization, unless earlier terminated by the Board. In July 2024, our Board of Directors authorized a stock repurchase program, which enables us to repurchase up to $ 1 billion in the aggregate of our outstanding common stock on the open market or in privately negotiated transactions until the one-year anniversary of the Board’s authorization, unless earlier terminated by the Board. During the three and six months ended June 30, 2024 , we repurchased 3.7 million and 4.5 million shares, respectively, of common stock for approximately $ 228.1 million and $ 281.0 million, respectively, which includes a 1% excise tax on share repurchases. During the three and six months ended June 30, 2023 , we repurchased 2.0 million and 4.3 million shares, respectively, of common stock for approximately $ 111.9 million and $ 246.6 million, respectively, which includes a 1% excise tax on share repurchases. We use the cost method to account for treasury stock purchases. Under the cost method, the price paid for the stock is charged to the treasury stock account. Dividends We paid quarterly cash dividends of $ 0.24 per share of common stock in each of March and June 2024 totaling $ 119.8 million. We paid quarterly cash dividends of $ 0.20 per share of common stock in each of March and June 2023 totaling $ 101.2 million. Accumulated Other Comprehensive Loss Accumulated other comprehensive loss balances, net of tax, consist of the following (in millions): Foreign Currency Translation Defined Benefit Obligation Accumulated Other Comprehensive Loss Balance, December 31, 2023 $ ( 424.5 ) $ ( 1.8 ) $ ( 426.3 ) Net current period other comprehensive (loss) income ( 44.9 ) 0.1 ( 44.8 ) Balance, June 30, 2024 $ ( 469.4 ) $ ( 1.7 ) $ ( 471.1 ) Adjustments to accumulated other comprehensive loss are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Defined Benefit Pension Unrealized net gains (losses) on defined benefit pension plan $ — $ 0.1 $ ( 0.1 ) $ — $ — $ 0.1 $ ( 0.1 ) $ 0.1 Foreign Currency Translation Current period translation adjustments 3.1 ( 0.4 ) 69.3 ( 3.1 ) ( 45.5 ) 0.6 113.6 ( 5.4 ) Total other comprehensive income (loss) $ 3.1 $ ( 0.3 ) $ 69.2 $ ( 3.1 ) $ ( 45.5 ) $ 0.7 $ 113.5 $ ( 5.3 )

Variable Interest Entity

Variable Interest Entity	6 Months Ended
	Jun. 30, 2024
Variable Interest Entity, Measure of Activity [Abstract]
Variable Interest Entity	Note 8—Variable Interest Entity In July 2021, we entered into an agreement whereby we obtained an 80.2 % interest in DomaniRx, LLC ( “ DomaniRx ” ), a variable interest entity under GAAP. We have the power to direct the majority of the activities of DomaniRx that most significantly impact its economic performance, the obligation to absorb losses and the right to receive benefits from DomaniRx. Accordingly, we determined that we are the primary beneficiary of DomaniRx and consolidate its results. The carrying value of the assets and liabilities associated with DomaniRx included in our condensed consolidated balance sheet at June 30, 2024 and December 31, 2023, which are limited for use in its operations and do not have recourse against our general credit or our senior secured credit facilities, are as follows: June 30, December 31, 2024 2023 Assets: Cash and cash equivalents $ 88.5 $ 100.2 Intangible assets 209.0 193.3 Other assets 2.3 3.2 Liabilities: Other liabilities 2.7 3.9

Revenues

Revenues	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenues	Note 9—Revenues We generate revenues primarily through our software-enabled services. Our software-enabled services are generally provided under contracts with initial terms of one to five years that require monthly or quarterly payments and are subject to automatic annual renewal at the end of the initial term unless terminated by either party. We also generate revenues by licensing our software to clients through either perpetual or term licenses and by selling maintenance services. We classify license revenues related to sales-based royalty arrangements as term license revenue. Maintenance services are generally provided under annually renewable contracts. Our pricing typically scales as a function of our clients’ assets under management, the complexity of asset classes managed, the volume of transactions and the level of service the client requires. Revenues from professional services consist mostly of services provided on a time and materials basis. Deferred revenues primarily represent unrecognized fees billed or collected for maintenance and professional services. Deferred revenues are recognized as (or when) we perform under the contract. Deferred revenues are recorded on a net basis with contract assets at the contract level. Accordingly, as of June 30, 2024 and December 31, 2023 , approximately $ 65.6 million and $ 72.0 million, respectively, of deferred revenue is presented net within contract assets arising from the same contracts. The amount of revenues recognized in the period that was included in the opening deferred revenues balance was $ 111.7 million for the six months ended June 30, 2024. As of June 30, 2024, revenue of approximately $984 .3 million is expected to be recognized from remaining performance obligations for license, maintenance and related revenues, of which $ 493.3 million is expected to be recognized over the next twelve months. We record revenue net of any taxes assessed by governmental authorities. Revenue Disaggregation The following table disaggregates our revenues by geography (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 United States $ 1,015.4 $ 942.8 $ 2,007.7 $ 1,897.7 United Kingdom 155.8 157.4 321.3 313.3 Europe (excluding United Kingdom), Middle East and Africa 118.8 115.5 234.7 220.9 Asia-Pacific and Japan 78.9 68.6 152.2 136.6 Canada 54.7 53.7 114.3 109.2 Americas, excluding United States and Canada 27.9 24.6 56.3 47.6 Total $ 1,451.5 $ 1,362.6 $ 2,886.5 $ 2,725.3 The following table disaggregates our revenues by source (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Software-enabled services $ 1,192.4 $ 1,106.5 $ 2,380.1 $ 2,220.7 Maintenance and term licenses 224.4 218.6 443.2 431.9 Professional services 25.1 28.6 48.9 56.3 Perpetual licenses 9.6 8.9 14.3 16.4 Total $ 1,451.5 $ 1,362.6 $ 2,886.5 $ 2,725.3

Stock Based Compensation

Stock Based Compensation	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Stock Based Compensation	Note 10—Stock-based Compensation S tock options, SARs, PSUs and RSUs The amount of stock-based compensation expense recognized in our Condensed Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2024 and 2023 was as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, Condensed Consolidated Statements of Comprehensive Income Classification 2024 2023 2024 2023 Cost of software-enabled services $ 17.7 $ 12.9 $ 33.1 $ 28.4 Cost of license, maintenance and other related 2.2 1.5 3.8 3.3 Total cost of revenues 19.9 14.4 36.9 31.7 Selling and marketing 9.3 6.6 17.0 14.5 Research and development 7.8 4.6 14.0 10.0 General and administrative 13.6 7.9 27.8 19.2 Total operating expenses 30.7 19.1 58.8 43.7 Total stock-based compensation expense $ 50.6 $ 33.5 $ 95.7 $ 75.4 The stock-based compensation expense related to performance awards is adjusted for changes in our assessment of the performance target level that is probable of being achieved and the number of performance-based equity awards expected to vest. In December 2021, we granted performance-based stock options (“PSOs”) for which the 3-year performance period ends in December 2024. If the threshold level of performance is not achieved for these PSOs, $ 44.8 million of previously recorded stock-based compensation expense will be reversed. During the three months ended June 30, 2023, we recorded an adjustment to reduce previously recorded stock-based compensation expense relating to performance-based equity awards by $ 8.5 million as the number of performance-based options expected to vest decreased. The following table summarizes stock option and stock appreciation rights (“SARs”) activity, as well as performance stock units (“PSUs”) and restricted stock units (“RSUs”) activity, for the six months ended June 30, 2024 (shares in millions): Stock Options and SARs PSUs and RSUs Outstanding at December 31, 2023 38.8 3.5 Granted 1.8 3.4 Cancelled/forfeited ( 1.1 ) ( 0.9 ) Exercised ( 2.4 ) — Vested — ( 0.7 ) Outstanding at June 30, 2024 37.1 5.3

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Note 11—Income Taxes The effective tax rate was 6.7 % and 32.7 % for the three months ended June 30, 2024 and 2023, respectively, and 18.8 % and 31.1 % for the six months ended June 30, 2024 and 2023, respectively. The change in the effective tax rate for the three and six months ended June 30, 2024 compared to the prior year was primarily due to releases of uncertain tax positions in the current year due to closed audits and a proportionate change in the composition of income before income taxes from foreign and domestic tax jurisdictions. The effective tax rates for the three and six months ended June 30, 2024 include tax benefits of $ 40.8 million related to releases of uncertain tax positions and $ 5.7 million of tax refunds, both due to closed audits.

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings per Share	Note 12—Earnings per Share The following table sets forth the computation of basic and diluted EPS (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net income attributable to SS&C common stockholders $ 190.3 $ 130.7 $ 347.9 $ 256.7 Shares attributable to SS&C: Weighted-average common shares outstanding – used in calculation of basic EPS 246.2 248.5 246.6 249.5 Weighted-average common stock equivalents – stock options and restricted shares 6.1 6.5 6.1 6.5 Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS 252.3 255.0 252.7 256.0 Earnings per share attributable to SS&C common stockholders – Basic $ 0.77 $ 0.53 $ 1.41 $ 1.03 Earnings per share attributable to SS&C common stockholders – Diluted $ 0.75 $ 0.51 $ 1.38 $ 1.00 Weighted-average stock options, SARs, RSUs and PSUs representing 15.1 mill ion and 17.4 million shares were outstanding for the three and six months ended June 30, 2024 , respectively, but were not included in the computation of diluted EPS because the effect of including them would be anti-dilutive. Weighted-average stock options, SARs, RSUs and PSUs representing 24.9 mill ion shares were outstanding for the each of the three and six month periods ended June 30, 2023, but were not included in the computation of diluted EPS because the effect of including them would be anti-dilutive.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 13—Commitments and Contingencies From time to time, we are subject to legal proceedings and claims. In our opinion, we are not involved in any litigation or proceedings that would have a material adverse effect on us or our business.

Basis of Presentation and Pri_2

Basis of Presentation and Principles of Consolidation (Policies)	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recent Accounting Pronouncements Not Yet Effective	Recent Accounting Pronouncements Not Yet Effective In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The standard is applicable to all public entities, including public entities with a single reportable segment, and requires enhanced reportable segment disclosures. The disclosures include significant segment expenses regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss. The standard also requires disclosure of the title and position of the CODM as well as how the CODM uses the reported measures of a segment’s profit or loss to assess segment performance and decide how to allocate resources. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 31, 2024. Early adoption is permitted. We are currently evaluating the potential impact the standard will have on our disclosures. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (Topic 740) . The standard requires more enhanced disclosures specifically related to effective tax rate reconciliation and income taxes paid. The new requirements will be effective for fiscal years beginning after December 15, 2024, on a prospective basis. Early adoption and retrospective application are permitted. We are currently evaluating the potential impact the standard will have on our income tax disclosures.

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment and Related Accumulated Depreciation	Property, plant and equipment and the related accumulated depreciation are as follows (in millions): June 30, December 31, 2024 2023 Land $ 37.6 $ 37.7 Building and improvements 268.0 265.5 Equipment, furniture, and fixtures 546.1 525.7 851.7 828.9 Less: accumulated depreciation ( 547.0 ) ( 513.6 ) Total property, plant and equipment, net $ 304.7 $ 315.3

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Summary of Investments	Investments are as follows (in millions): June 30, December 31, 2024 2023 Non-marketable equity securities $ 124.0 $ 124.0 Seed capital investments 25.9 26.1 Marketable equity securities 20.6 23.1 Partnership interests in private equity funds 10.7 11.5 Total investments $ 181.2 $ 184.7
Schedule of Realized and Unrealized Gains and Losses on Investments	Unrealized gains for our equity securities are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Unrealized (losses) gains on equity securities held as of the end of the period $ ( 0.7 ) $ 0.9 $ 0.2 $ 3.2
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present assets and liabilities measured at fair value on a recurring basis (in millions): Fair Value Measurements at Reporting Date Using June 30, 2024 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 1,420.2 $ 1,420.2 $ — $ — Seed capital investments (2) 25.9 25.9 — — Marketable equity securities (2) 20.6 20.6 — — Deferred compensation liabilities (3) ( 11.6 ) ( 11.6 ) — — Total $ 1,455.1 $ 1,455.1 $ — $ — Fair Value Measurements at Reporting Date Using December 31, 2023 Quoted prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Money market funds (1) $ 2,212.6 $ 2,212.6 $ — $ — Seed capital investments (2) 26.1 26.1 — — Marketable equity securities (2) 23.1 23.1 — — Deferred compensation liabilities (3) ( 11.7 ) ( 11.7 ) — — Total $ 2,250.1 $ 2,250.1 $ — $ —

Unconsolidated Affiliates (Tabl

Unconsolidated Affiliates (Tables)	6 Months Ended
	Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments in Unconsolidated Affiliates	Investments in unconsolidated affiliates are as follows (in millions): June 30, 2024 December 31, 2023 Ownership Percentage Carrying Value Excess carrying value of investment over proportionate share of net assets Carrying Value Excess carrying value of investment over proportionate share of net assets Orbit Private Investments L.P. 9.8 % $ 202.2 $ — $ 211.6 $ — International Financial Data Services L.P. 50.0 % 70.4 29.7 68.3 31.4 Broadway Square Partners, LLP 50.0 % 52.9 29.1 53.4 29.5 Pershing Road Development Company, LLC 50.0 % 9.8 54.2 10.0 55.4 Other unconsolidated affiliates 1.8 — 1.9 — Total $ 337.1 $ 113.0 $ 345.2 $ 116.3
Schedule of Equity in Earnings of Unconsolidated Affiliates	Equity in earnings of unconsolidated affiliates, net are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Orbit Private Investments L.P. $ 16.2 $ 7.6 $ 17.4 $ 12.4 International Financial Data Services L.P. 1.5 1.4 3.0 2.5 Pershing Road Development Company, LLC ( 0.2 ) ( 0.7 ) ( 0.3 ) ( 0.9 ) Broadway Square Partners, LLP ( 0.2 ) ( 0.1 ) ( 0.5 ) — Other unconsolidated affiliates — 1.2 — 1.1 Total $ 17.3 $ 9.4 $ 19.6 $ 15.1

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Change in Carrying Value of Goodwill	The change in carrying value of goodwill as of and for the six months ended June 30, 2024 is as follows (in millions): Balance at December 31, 2023 $ 8,969.5 Adjustments to prior acquisitions 0.1 Effect of foreign currency translation ( 34.3 ) Balance at June 30, 2024 $ 8,935.3

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Component of Debt	At June 30, 2024 and December 31, 2023, debt consisted of the following (in millions): June 30, December 31, 2024 2023 Senior secured credit facilities, weighted-average interest rate of 7.34 % and 7.35 %, respectively $ 3,900.0 $ 4,755.1 5.5 % senior notes due 2027 2,000.0 2,000.0 6.5 % senior notes due 2032 750.0 — Unamortized original issue discount and debt issuance costs ( 35.9 ) ( 35.1 ) 6,614.1 6,720.0 Less: current portion of long-term debt 39.0 51.5 Long-term debt $ 6,575.1 $ 6,668.5
Schedule of the key terms of our Senior Secured Credit Facilities and Senior Notes	The table below provides a summary of the key terms of our Senior Secured Credit Facilities and Senior Notes: Amount Outstanding Maturity Scheduled Quarterly (in millions) Date Payments Required Senior Secured Credit Facilities Term Loan B-8 $ 3,900.0 May 9, 2031 0.25 % Revolving Credit Facility — December 28, 2027 None 5.5 % Senior Notes 2,000.0 September 30, 2027 None 6.5 % Senior Notes 750.0 June 1, 2032 None
Schedule of Carrying Amounts and Fair Values of Financial Instruments	The carrying amounts and fair values of financial instruments are as follows (in millions): June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 3,873.8 $ 3,915.8 $ 4,722.7 $ 4,774.4 5.5 % senior notes due 2027 1,997.7 1,972.1 1,997.3 1,974.0 6.5 % senior notes due 2032 742.6 757.6 — —

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax	Accumulated other comprehensive loss balances, net of tax, consist of the following (in millions): Foreign Currency Translation Defined Benefit Obligation Accumulated Other Comprehensive Loss Balance, December 31, 2023 $ ( 424.5 ) $ ( 1.8 ) $ ( 426.3 ) Net current period other comprehensive (loss) income ( 44.9 ) 0.1 ( 44.8 ) Balance, June 30, 2024 $ ( 469.4 ) $ ( 1.7 ) $ ( 471.1 )
Schedule of Adjustments to Accumulated Other Comprehensive Income (Loss)	Adjustments to accumulated other comprehensive loss are as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Defined Benefit Pension Unrealized net gains (losses) on defined benefit pension plan $ — $ 0.1 $ ( 0.1 ) $ — $ — $ 0.1 $ ( 0.1 ) $ 0.1 Foreign Currency Translation Current period translation adjustments 3.1 ( 0.4 ) 69.3 ( 3.1 ) ( 45.5 ) 0.6 113.6 ( 5.4 ) Total other comprehensive income (loss) $ 3.1 $ ( 0.3 ) $ 69.2 $ ( 3.1 ) $ ( 45.5 ) $ 0.7 $ 113.5 $ ( 5.3 )

Variable Interest Entity (Table

Variable Interest Entity (Tables)	6 Months Ended
	Jun. 30, 2024
Variable Interest Entity, Measure of Activity [Abstract]
Summary of Assets and Liabilities	The carrying value of the assets and liabilities associated with DomaniRx included in our condensed consolidated balance sheet at June 30, 2024 and December 31, 2023, which are limited for use in its operations and do not have recourse against our general credit or our senior secured credit facilities, are as follows: June 30, December 31, 2024 2023 Assets: Cash and cash equivalents $ 88.5 $ 100.2 Intangible assets 209.0 193.3 Other assets 2.3 3.2 Liabilities: Other liabilities 2.7 3.9

Revenues (Tables)

Revenues (Tables)	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenues by Geography and Source	The following table disaggregates our revenues by geography (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 United States $ 1,015.4 $ 942.8 $ 2,007.7 $ 1,897.7 United Kingdom 155.8 157.4 321.3 313.3 Europe (excluding United Kingdom), Middle East and Africa 118.8 115.5 234.7 220.9 Asia-Pacific and Japan 78.9 68.6 152.2 136.6 Canada 54.7 53.7 114.3 109.2 Americas, excluding United States and Canada 27.9 24.6 56.3 47.6 Total $ 1,451.5 $ 1,362.6 $ 2,886.5 $ 2,725.3 The following table disaggregates our revenues by source (in millions): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Software-enabled services $ 1,192.4 $ 1,106.5 $ 2,380.1 $ 2,220.7 Maintenance and term licenses 224.4 218.6 443.2 431.9 Professional services 25.1 28.6 48.9 56.3 Perpetual licenses 9.6 8.9 14.3 16.4 Total $ 1,451.5 $ 1,362.6 $ 2,886.5 $ 2,725.3

Stock Based Compensation (Table

Stock Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Schedule of Stock-Based Compensation Expense Recognized	The amount of stock-based compensation expense recognized in our Condensed Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2024 and 2023 was as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, Condensed Consolidated Statements of Comprehensive Income Classification 2024 2023 2024 2023 Cost of software-enabled services $ 17.7 $ 12.9 $ 33.1 $ 28.4 Cost of license, maintenance and other related 2.2 1.5 3.8 3.3 Total cost of revenues 19.9 14.4 36.9 31.7 Selling and marketing 9.3 6.6 17.0 14.5 Research and development 7.8 4.6 14.0 10.0 General and administrative 13.6 7.9 27.8 19.2 Total operating expenses 30.7 19.1 58.8 43.7 Total stock-based compensation expense $ 50.6 $ 33.5 $ 95.7 $ 75.4
Summary of Stock Option and Stock Appreciation Rights ("SARs") Restricted Stock Units ("RSUs") and Performance Stock Units ("PSU") Activity	The following table summarizes stock option and stock appreciation rights (“SARs”) activity, as well as performance stock units (“PSUs”) and restricted stock units (“RSUs”) activity, for the six months ended June 30, 2024 (shares in millions): Stock Options and SARs PSUs and RSUs Outstanding at December 31, 2023 38.8 3.5 Granted 1.8 3.4 Cancelled/forfeited ( 1.1 ) ( 0.9 ) Exercised ( 2.4 ) — Vested — ( 0.7 ) Outstanding at June 30, 2024 37.1 5.3

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted EPS	The following table sets forth the computation of basic and diluted EPS (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net income attributable to SS&C common stockholders $ 190.3 $ 130.7 $ 347.9 $ 256.7 Shares attributable to SS&C: Weighted-average common shares outstanding – used in calculation of basic EPS 246.2 248.5 246.6 249.5 Weighted-average common stock equivalents – stock options and restricted shares 6.1 6.5 6.1 6.5 Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS 252.3 255.0 252.7 256.0 Earnings per share attributable to SS&C common stockholders – Basic $ 0.77 $ 0.53 $ 1.41 $ 1.03 Earnings per share attributable to SS&C common stockholders – Diluted $ 0.75 $ 0.51 $ 1.38 $ 1.00

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment and Related Accumulated Depreciation (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 851.7	$ 828.9
Less: accumulated depreciation	(547)	(513.6)
Total property, plant and equipment, net	304.7	315.3
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37.6	37.7
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	268	265.5
Equipment, Furniture, and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 546.1	$ 525.7

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 18.4	$ 18.1	$ 36.3	$ 37.1
Prepaid Expenses and Other Current Assets [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment assets, net held for sale	5.9		5.9		$ 9
Accounts payable and other accrued expenses	$ 14		$ 14		$ 2.9

Investments - Summary of Invest

Investments - Summary of Investments (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Total investments	$ 181.2	$ 184.7
Non Marketable Equity Securities
Schedule of Investments [Line Items]
Total investments	124	124
Seed Capital Investments
Schedule of Investments [Line Items]
Total investments	25.9	26.1
Marketable Equity Securities
Schedule of Investments [Line Items]
Total investments	20.6	23.1
Partnership Interests in Private Equity Funds
Schedule of Investments [Line Items]
Total investments	$ 10.7	$ 11.5

Investments - Schedule of Reali

Investments - Schedule of Realized and Unrealized Gains and Losses on Investments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Unrealized losses on equity securities held as of the end of the period	$ (0.7)	$ 0.9	$ 0.2	$ 3.2

Investments - Summary of Assets

Investments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions		Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	$ (11.6)	$ (11.7)
Total		1,455.1	2,250.1
Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[2]	1,420.2	2,212.6
Seed Capital Investments
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	25.9	26.1
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	20.6	23.1
Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	(11.6)	(11.7)
Total		1,455.1	2,250.1
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[2]	1,420.2	2,212.6
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] | Seed Capital Investments
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	25.9	26.1
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] | Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	20.6	23.1
Significant Other Observable Inputs (Level 2) [Member]
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	0	0
Total		0	0
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[2]	0	0
Significant Other Observable Inputs (Level 2) [Member] | Seed Capital Investments
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	0	0
Significant Other Observable Inputs (Level 2) [Member] | Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	0	0
Significant Unobservable Inputs (Level 3) [Member]
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	0	0
Total			0
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[2]	0	0
Significant Unobservable Inputs (Level 3) [Member] | Seed Capital Investments
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	0	0
Significant Unobservable Inputs (Level 3) [Member] | Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	$ 0	$ 0
[1] Included in Other long-term liabilities on the Condensed Consolidated Balance Sheet As of June 30, 2024 , included $ 130.8 million of cash and cash equivalents, $ 2.6 million of restricted cash and $ 1,286.8 million of funds receivable and funds held on behalf of clients on the Condensed Consolidated Balance Sheet. As of December 31, 2023 , included $ 131.7 million of cash and cash equivalents, $ 1.8 million of restricted cash and $ 2,079.1 million of funds receivable and funds held on behalf of clients on the Condensed Consolidated Balance Sheet. Included in Investments on the Condensed Consolidated Balance Sheet

Investments - Summary of Asse_2

Investments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Parenthetical) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Cash and cash equivalents	$ 130.8	$ 131.7
Restricted Cash	2.6	1.8
Funds Held for Clients	$ 1,286.8	$ 2,079.1

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Total investments	$ 181.2	$ 184.7
Partnership Interests in Private Equity Funds
Schedule of Investments [Line Items]
Total investments	10.7	11.5
Investments, fair value	9.2	9.2
Equity method investments, fair value	1.5	2.3
Seed Capital Investments [Member]
Schedule of Investments [Line Items]
Total investments	$ 25.9	$ 26.1

Unconsolidated Affiliates - Sch

Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Carrying Value	$ 337.1	$ 345.2
Excess carrying value of investment over proportionate share of net assets	$ 113	116.3
Orbit Private Investments Limited Partners
Schedule of Investments [Line Items]
Ownership Percentage	9.80%
Carrying Value	$ 202.2	211.6
Excess carrying value of investment over proportionate share of net assets	$ 0	0
International Financial Data Services L.P.
Schedule of Investments [Line Items]
Ownership Percentage	50%
Carrying Value	$ 70.4	68.3
Excess carrying value of investment over proportionate share of net assets	$ 29.7	31.4
Pershing Road Development Company, LLC
Schedule of Investments [Line Items]
Ownership Percentage	50%
Carrying Value	$ 9.8	10
Excess carrying value of investment over proportionate share of net assets	$ 54.2	55.4
Broadway Square Partners, LLP
Schedule of Investments [Line Items]
Ownership Percentage	50%
Carrying Value	$ 52.9	53.4
Excess carrying value of investment over proportionate share of net assets	29.1	29.5
Other Unconsolidated Affiliates
Schedule of Investments [Line Items]
Carrying Value	1.8	1.9
Excess carrying value of investment over proportionate share of net assets	$ 0	$ 0

Unconsolidated Affiliates - Add

Unconsolidated Affiliates - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
Recorded distribution in operating activities	$ 2.4	$ 2.5	$ 16.2
Recorderd distribution in investing activities	24.5	$ 24.5	$ 0
Orbit Private Investments Limited Partners
Schedule of Equity Method Investments [Line Items]
Distributions received from unconsolidated affiliates	$ 26.9

Unconsolidated Affiliates - S_2

Unconsolidated Affiliates - Schedule of Equity in Earnings of Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	$ 17.3	$ 9.4	$ 19.6	$ 15.1
Orbit Private Investments L.P.
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	16.2	7.6	17.4	12.4
International Financial Data Services L.P.
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	1.5	1.4	3	2.5
Pershing Road Development Company, LLC
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	(0.2)	(0.7)	(0.3)	(0.9)
Broadway Square Partners, LLP
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	(0.2)	(0.1)	(0.5)	0
Other Unconsolidated Affiliates
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	$ 0	$ 1.2	$ 0	$ 1.1

Goodwill - Summary of Change in

Goodwill - Summary of Change in Carrying Value of Goodwill (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 8,969.5
Adjustments to prior acquisitions	0.1
Effect of foreign currency translation	(34.3)
Ending balance	$ 8,935.3

Debt - Component of Debt (Detai

Debt - Component of Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Unamortized original issue discount and debt issuance costs	$ (35.9)	$ (35.1)
Debt	6,614.1	6,720
Less: current portion of long-term debt	39	51.5
Long-term debt	6,575.1	6,668.5
Secured Debt | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	3,900	4,755.1
Senior Notes | 5.5% Senior Notes due 2027
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	2,000	2,000
Senior Notes | 6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	$ 750	$ 0

Debt - Component of Debt (Paren

Debt - Component of Debt (Parenthetical) (Detail)		6 Months Ended	12 Months Ended
	May 09, 2024	Jun. 30, 2024	Dec. 31, 2023
6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt, interest rate		6.50%
Secured Debt | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt, weighted-average interest rate of credit facility		7.34%	7.35%
Senior Notes
Debt Instrument [Line Items]
Debt, interest rate	6.50%
Senior Notes | 5.5% Senior Notes due 2027
Debt Instrument [Line Items]
Debt, interest rate		5.50%	5.50%
Debt, due date		2027	2027
Senior Notes | 6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt, interest rate	6.50%	6.50%	6.50%
Debt, due date	2032	2032	2032

Debt - Schedule of Senior Secur

Debt - Schedule of Senior Secured Credit Facilities and Senior Note (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 0
Debt Instrument, Maturity Date	Dec. 28, 2027
Line Of Credit Facility Periodic Payment Principal Percentage	0%
5.5% Senior Notes | Senior Notes
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 2,000
Debt Instrument, Maturity Date	Sep. 30, 2027
Line Of Credit Facility Periodic Payment Principal Percentage	0%
6.5% Senior Notes
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 750
Debt Instrument, Maturity Date	Jun. 01, 2032
Line Of Credit Facility Periodic Payment Principal Percentage	0%
Senior Secured Credit Facilities | Term Loan B-8
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 3,900
Debt Instrument, Maturity Date	May 09, 2031
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%

Debt - Schedule of Senior Sec_2

Debt - Schedule of Senior Secured Credit Facilities and Senior Note (Parenthetical) (Details) - Senior Notes	Jun. 30, 2024	May 09, 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.50%
5.5% Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%
6.5% Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%

Debt (Additional Information) (

Debt (Additional Information) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	May 09, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Debt Instrument Interest Rate Terms				the Base Rate (as defined in the Amendment), plus 1.00% per annum, or the Term SOFR Rate (as defined in the Amendment), plus 2.00% per annum.
Description of Senior Secured Credit Facilities and Senior Notes				The 6.5% Senior Notes are senior unsecured obligations and rank equal in right of payment with all of our existing and future senior indebtedness. The 6.5% Senior Notes are fully and unconditionally guaranteed, jointly and severally, by SS&C Holdings and all of its existing domestic restricted subsidiaries (other than SS&C Technologies) that guarantee our existing senior secured credit facilities and future domestic restricted subsidiaries that guarantee our existing senior secured credit facilities and certain other indebtedness. Interest on the 6.5% Senior Notes is payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2024.
Loss on extinguishment of debt		$ (27.7)	$ 0	$ (28.8)	$ (0.6)
6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.50%		6.50%
Term Loan B-8
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 3,935
Incremental Joinder [Member]
Debt Instrument [Line Items]
Capitalized financing costs		$ 34.5		$ 34.5
Loss on extinguishment of debt
Debt Instrument [Line Items]
Loss on extinguishment of debt		27.7
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Senior Notes [Member] | 6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument Carrying Amount		$ 750		$ 750		$ 0
Debt Instrument, Face Amount	$ 750
Debt Instrument, Interest Rate, Stated Percentage	6.50%	6.50%		6.50%		6.50%
Debt Conversion, Original Debt, Due Date, Year	2032			2032		2032

Debt - Schedule of Carrying Amo

Debt - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Carrying Amount [Member] | Senior Secured Credit Facilities
Financial liabilities:
Credit facility	$ 3,873.8	$ 4,722.7
Carrying Amount [Member] | 5.5% Senior Notes due 2027
Financial liabilities:
Senior notes	1,997.7	1,997.3
Carrying Amount [Member] | 6.5% senior notes due 2032
Financial liabilities:
Senior notes	742.6	0
Fair Value [Member] | Senior Secured Credit Facilities
Financial liabilities:
Credit facility	3,915.8	4,774.4
Fair Value [Member] | 5.5% Senior Notes due 2027
Financial liabilities:
Credit facility	1,972.1	1,974
Fair Value [Member] | 6.5% senior notes due 2032
Financial liabilities:
Credit facility	$ 757.6	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jul. 31, 2024	Jul. 31, 2023
Class of Stock [Line Items]
Payments for repurchase of common stock	$ 228.1		$ 111.9		$ 281	$ 246.6
Quarterly cash dividend paid	$ 0.24	$ 0.24	$ 0.2	$ 0.2
Dividends paid on common stock	$ 119.8		$ 101.2		$ 119.8	$ 101.2
Stock Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of common stock , shares	3,700,000		2,000,000		4,500,000	4,300,000
Payments for repurchase of common stock	$ 228.1		$ 111.9		$ 281	$ 246.6
Maximum [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 1,000	$ 1,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			$ 6,339.6
Net current period other comprehensive loss	$ 2.8	$ 66.1	(44.8)	$ 108.2
Ending balance	6,427.9		6,427.9
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(424.5)
Net current period other comprehensive loss			(44.9)
Ending balance	(469.4)		(469.4)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(1.8)
Net current period other comprehensive loss			0.1
Ending balance	(1.7)		(1.7)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(426.3)
Net current period other comprehensive loss			(44.8)
Ending balance	$ (471.1)		$ (471.1)

Stockholders' Equity - Schedu_2

Stockholders' Equity - Schedule of Adjustments to Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized net gains (losses) on defined benefit pension plan	$ 3.1	$ 69.2	$ (45.5)	$ 113.5
Unrealized gains (losses) on interest rate swaps	3.1	69.2	(45.5)	113.5
Other comprehensive (loss) income before reclassifications, Tax Effect	(0.3)	(3.1)	0.7	(5.3)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized net gains (losses) on defined benefit pension plan	0	(0.1)	0	(0.1)
Reclassification of losses into net earnings on defined benefit pension, Tax Effect	0.1	0.1	0.1	0.1
Unrealized gains (losses) on interest rate swaps	0	(0.1)	0	(0.1)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized net gains (losses) on defined benefit pension plan	3.1	69.3	(45.5)	113.6
Unrealized gains (losses) on interest rate swaps	3.1	69.3	(45.5)	113.6
Other comprehensive (loss) income before reclassifications, Tax Effect	$ (0.4)	$ (3.1)	$ 0.6	$ (5.4)

Variable Interest Entities (Add

Variable Interest Entities (Additional Information) (Details)	Jul. 31, 2021
DomaniRx LLC [Member]
Variable Interest Entity [Line Items]
Ownership Percentage	80.20%

Variable Interest Entity - Summ

Variable Interest Entity - Summary of Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Assets:
Cash and cash equivalents	$ 462.7	$ 432.2	$ 439.7
DomaniRx LLC [Member]
Assets:
Cash and cash equivalents	88.5	100.2
Intangible assets	209	193.3
Other assets	2.3	3.2
Liabilities:
Other liabilities	$ 2.7	$ 3.9

Revenues - Additional Informati

Revenues - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Deferred Revenue Arrangement [Line Items]
Deferred revenue presented net within contract assets arising from contract	$ 65.6	$ 72
Deferred revenue recognized	111.7
Revenue expected to be recognized from remaining performance obligations	0.3
Revenue expected to be recognized from remaining performance obligations in next twelve months	$ 493.3
Minimum [Member] | Software-enabled Services [Member]
Deferred Revenue Arrangement [Line Items]
Revenue recognition period	1 year
Maximum [Member] | Software-enabled Services [Member]
Deferred Revenue Arrangement [Line Items]
Revenue recognition period	5 years

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenues by Geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Total revenues	$ 1,451.5	$ 1,362.6	$ 2,886.5	$ 2,725.3
United States [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	1,015.4	942.8	2,007.7	1,897.7
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	155.8	157.4	321.3	313.3
Europe (excluding United Kingdom), Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	118.8	115.5	234.7	220.9
Asia-Pacific and Japan [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	78.9	68.6	152.2	136.6
Canada [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	54.7	53.7	114.3	109.2
Americas, excluding United States and Canada [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	$ 27.9	$ 24.6	$ 56.3	$ 47.6

Revenues - Disaggregation of _2

Revenues - Disaggregation of Revenues by Source (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Total revenues	$ 1,451.5	$ 1,362.6	$ 2,886.5	$ 2,725.3
Software-enabled Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	1,192.4	1,106.5	2,380.1	2,220.7
Maintenance and Term Licenses [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	224.4	218.6	443.2	431.9
Professional Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	25.1	28.6	48.9	56.3
Perpetual Licenses [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	$ 9.6	$ 8.9	$ 14.3	$ 16.4

Stock Based Compensation - Sche

Stock Based Compensation - Schedule of Stock-Based Compensation Expense Recognized (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 50.6	$ 33.5	$ 95.7	$ 75.4
Software-enabled Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	17.7	12.9	33.1	28.4
License, Maintenance and Other Related [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	2.2	1.5	3.8	3.3
Total Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	19.9	14.4	36.9	31.7
Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	9.3	6.6	17	14.5
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	7.8	4.6	14	10
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	13.6	7.9	27.8	19.2
Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 30.7	$ 19.1	$ 58.8	$ 43.7

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Stock Option and Stock Appreciation Rights ("SARs") Restricted Stock Units ("RSUs") and Performance Stock Units ("PSU") Activity (Detail) shares in Millions	6 Months Ended
	Jun. 30, 2024 shares
Stock Options and SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	38.8
Granted	1.8
Cancelled/forfeited	(1.1)
Exercised	(2.4)
Vested	0
Number of Shares, Outstanding Closing	37.1
PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	3.4
Number of Shares, Outstanding Opening	3.5
Cancelled/forfeited	(0.9)
Exercised	0
Vested	(0.7)
Number of Shares, Outstanding Closing	5.3

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share Based Compensation Expense Related To Performance Based Options		$ 44.8
Performance-Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustment to stock based compensation expense	$ 8.5

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Effective tax rate	6.70%	32.70%	18.80%	31.10%
Uncertain tax positions	$ 40.8		$ 40.8
Income Tax Benefit Related to Uncertain Tax Positions	13.8	$ 63.6	80.5	$ 116.1
Tax Refunds due to Closed Audits	$ 5.7		$ 5.7

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income attributable to SS&C common stockholders	$ 190.3	$ 130.7	$ 347.9	$ 256.7
Shares attributable to SS&C:
Weighted-average common shares outstanding – used in calculation of basic EPS	246.2	248.5	246.6	249.5
Weighted-average common stock equivalents – stock options and restricted shares	6.1	6.5	6.1	6.5
Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS	252.3	255	252.7	256
Earnings per share attributable to SS&C common stockholders - Basic	$ 0.77	$ 0.53	$ 1.41	$ 1.03
Earnings per share attributable to SS&C common stockholders - Diluted	$ 0.75	$ 0.51	$ 1.38	$ 1

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stock Options, SARs, RSUs, and RSAs [Member]
Earnings Per Share [Line Items]
Anti-dilutive shares not included in computation of diluted EPS	15.1	24.9	17.4	24.9