SS&C Technologies (SSNC) 10-Q 1 Nov 23 2023 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Oct. 25, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
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		247,515,709

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 447.6	$ 440.1
Funds receivable and funds held on behalf of clients	787.5	966.3
Accounts receivable, net of allowance for credit losses of $28.9 and $21.7, respectively	836.2	778.6
Contract asset	39.6	42.3
Prepaid expenses and other current assets	155.2	193.8
Restricted cash and cash equivalents	2.3	3.3
Total current assets	2,268.4	2,424.4
Property, plant and equipment, net (Note 2)	321.5	343.9
Operating lease right-of-use assets	231.5	260.6
Investments (Note 3)	184.4	193.9
Unconsolidated affiliates (Note 4)	286.3	266.9
Contract asset	116.1	115.9
Goodwill (Note 6)	8,854.9	8,863
Intangible and other assets, net of accumulated amortization of $3,888.8 and $3,445.4, respectively	3,916.9	4,184.7
Total assets	16,180	16,653.3
Current liabilities:
Current portion of long-term debt (Note 7)	127.3	55.7
Client funds obligations	787.5	966.3
Accounts payable	46.7	49.5
Income taxes payable	18.4	34.3
Accrued employee compensation and benefits	212.3	235.8
Interest payable	56	28.4
Other accrued expenses	282.2	356.1
Deferred revenues	458.7	464.7
Total current liabilities	1,989.1	2,190.8
Long-term debt, net of current portion (Note 7)	6,738.7	7,023.9
Operating lease liabilities	209.5	237
Other long-term liabilities	244	225.8
Deferred income taxes	794.4	872.9
Total liabilities	9,975.7	10,550.4
Commitments and contingencies (Note 14)
Redeemable noncontrolling interest (Note 3)	2.8	2.1
Stockholders’ equity (Note 8):
Preferred stock, $0.01 par value per share, 5.0 million shares authorized; no shares issued	0	0
Additional paid-in capital	5,308.7	5,111.6
Accumulated other comprehensive loss	(554.9)	(550.1)
Retained earnings	2,991.9	2,740.1
Cost of common stock in treasury, 26.9 and 20.9 million shares, respectively	(1,604.5)	(1,260.1)
Total SS&C stockholders' equity	6,143.9	6,044.2
Noncontrolling interest (Note 9)	57.6	56.6
Total equity	6,201.5	6,100.8
Total liabilities, redeemable noncontrolling interest and equity	16,180	16,653.3
Class A Non-Voting Common Stock [Member]
Stockholders’ equity (Note 8):
Common stock	0	0
Common Stock Class Undefined [Member]
Stockholders’ equity (Note 8):
Common stock	$ 2.7	$ 2.7

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Allowance for doubtful accounts receivable	$ 28.9	$ 21.7
Accumulated amortization of finite-lived intangible assets	$ 3,888.8	$ 3,445.4
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	274,400,000	271,900,000
Common stock, shares outstanding	247,500,000	251,000,000
Treasury stock	26,900,000	20,900,000
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 (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 1,365.9	$ 1,321	$ 4,091.2	$ 3,944.7
Cost of revenues:
Total cost of revenues	711.5	697.2	2,158.7	2,076.8
Gross profit	654.4	623.8	1,932.5	1,867.9
Operating expenses:
Selling and marketing	134.7	120.9	411.6	371.1
Research and development	117.7	107.6	355.5	331.8
General and administrative	95.6	91.1	290.7	323.4
Total operating expenses	348	319.6	1,057.8	1,026.3
Operating income	306.4	304.2	874.7	841.6
Interest expense, net	(120.6)	(86)	(350.5)	(203)
Other (expense) income, net	(5)	1.1	15.3	(28.3)
Equity in earnings of unconsolidated affiliates, net	27.5	(5.1)	42.6	(2.7)
Loss on extinguishment of debt	(0.5)	(1)	(1.1)	(4.1)
Income before income taxes	207.8	213.2	581	603.5
Provision for income taxes	51.2	53.4	167.3	162.1
Net income	156.6	159.8	413.7	441.4
Net (income) loss attributable to noncontrolling interest	(0.6)	0.2	(1)	1.3
Net income attributable to SS&C common stockholders	$ 156	$ 160	$ 412.7	$ 442.7
Basic earnings per share attributable to SS&C common stockholders	$ 0.63	$ 0.63	$ 1.66	$ 1.74
Diluted earnings per share attributable to SS&C common stockholders	$ 0.61	$ 0.61	$ 1.62	$ 1.68
Basic weighted-average number of common shares outstanding	247,500,000	253,900,000	248,800,000	254,800,000
Diluted weighted-average number of common and common equivalent shares outstanding	253,900,000	260,900,000	255,300,000	263,700,000
Net income	$ 156.6	$ 159.8	$ 413.7	$ 441.4
Other comprehensive (loss) income, net of tax:
Change in unrealized gain on interest rate swaps	0	3.3	0	4.8
Foreign currency exchange translation adjustment	(113)	(248.6)	(4.8)	(512)
Change in defined benefit pension obligation	0	0	0	(1.1)
Total other comprehensive income (loss), net of tax	(113)	(245.3)	(4.8)	(508.3)
Comprehensive income (loss)	43.6	(85.5)	408.9	(66.9)
Comprehensive (income) loss attributable to noncontrolling interest	(0.6)	0.2	(1)	1.3
Comprehensive income (loss) attributable to SS&C common stockholders	43	(85.3)	407.9	(65.6)
Software-enabled Services
Revenues:
Total revenues	1,122.1	1,049.8	3,342.8	3,205.7
Cost of revenues:
Total cost of revenues	617.8	605.8	1,877.4	1,811.6
License, Maintenance and Related [Member]
Revenues:
Total revenues	243.8	271.2	748.4	739
Cost of revenues:
Total cost of revenues	$ 93.7	$ 91.4	$ 281.3	$ 265.2

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flow from operating activities:
Net income	$ 413.7	$ 441.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	500.4	494.2
Equity in earnings of unconsolidated affiliates, net	(42.6)	2.7
Distributions received from unconsolidated affiliates	21.2	2.3
Stock-based compensation expense	117.5	93.3
Net losses (gains) on investments	0.9	14.7
Amortization and write-offs of loan origination costs and original issue discounts	10.2	10.2
Loss on extinguishment of debt	1.1	4.1
Loss on sale or disposition of property and equipment	7.6	1
Deferred income taxes	(89.1)	(78.6)
Provision for credit losses	9.8	9.1
Changes in operating assets and liabilities, excluding effects from acquisitions:
Accounts receivable	(69)	(30.3)
Prepaid expenses and other assets	27.6	54.8
Contract assets	0.5	(41.6)
Accounts payable	(5.3)	(4.4)
Accrued expenses and other liabilities	(73.8)	(160.5)
Income taxes prepaid and payable	(16.3)	12.3
Deferred revenue	12.3	(60.1)
Net cash provided by operating activities	826.7	764.6
Cash flow from investing activities:
Cash paid for business acquisitions, net of cash acquired	(0.1)	(1,629.5)
Additions to property and equipment	(40.7)	(53.3)
Proceeds from sale of property and equipment	0	10.9
Additions to capitalized software	(140.9)	(108.2)
Investments in securities	(0.6)	(10)
Proceeds from sales / maturities of investments	7.7	8.6
Distributions received from unconsolidated affiliates	0	66.2
Collection of other non-current receivables	7.5	7.5
Net cash used in investing activities	(167.1)	(1,707.8)
Cash flow from financing activities:
Cash received from debt borrowings, net of original issue discount	275	1,702.1
Repayments of debt	(499.5)	(408.5)
Payment of deferred financing fees	0	(14.7)
Net (decrease) increase in client funds obligations	(163.7)	(1,564.5)
Proceeds from exercise of stock options	79.2	73.3
Withholding taxes paid related to equity award net share settlement	(1.7)	(0.6)
Purchases of common stock for treasury	(341)	(385.4)
Dividends paid on common stock	(160.9)	(153.4)
Net cash used in financing activities	(812.6)	(751.7)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(4.2)	(32.9)
Net (decrease) increase in cash, cash equivalents and restricted cash	(157.2)	(1,727.8)
Cash, cash equivalents and restricted cash, beginning of period	1,337.6	3,171.4
Cash, cash equivalents and restricted cash and cash equivalents, end of period	1,180.4	1,443.6
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents:
Cash and cash equivalents	447.6	401.9
Restricted cash and cash equivalents	2.3	3
Restricted cash and cash equivalents included in funds receivable and funds held on behalf of clients	730.5	1,038.7
Cash and cash equivalents and restricted cash	$ 1,180.4	$ 1,443.6

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2021	$ 6,223,200,000	$ 2,700,000	$ 4,895,700,000	$ 2,293,000,000	$ (242,000,000)	$ (784,000,000)	$ 57,800,000
Beginning balance, shares at Dec. 31, 2021		269,100,000
Net income	441,400,000			442,700,000			(1,300,000)
Foreign exchange translation adjustment	(512,000,000)				(512,000,000)
Net change in interest rate swaps	4,800,000				4,800,000
Defined benefit pension adjustment	(1,100,000)				(1,100,000)
Stock-based compensation expense	93,300,000		93,300,000
Exercise of options, net of withholding taxes	72,700,000		72,700,000
Exercise of options, net of withholding taxes, shares		1,900,000
Purchases of common stock	(385,400,000)					(385,400,000)
Cash dividends declared	(153,400,000)			(153,400,000)
Ending balance at Sep. 30, 2022	5,783,500,000	$ 2,700,000	5,061,700,000	2,582,300,000	(750,300,000)	(1,169,400,000)	56,500,000
Ending balance, shares at Sep. 30, 2022		271,000,000
Beginning balance at Jun. 30, 2022	6,112,100,000	$ 2,700,000	5,039,300,000	2,473,300,000	(505,000,000)	(954,900,000)	56,700,000
Beginning balance, shares at Jun. 30, 2022		270,300,000
Net income	159,800,000			160,000,000			(200,000)
Foreign exchange translation adjustment	(248,600,000)				(248,600,000)
Net change in interest rate swaps	3,300,000				3,300,000
Stock-based compensation expense	7,400,000		7,400,000
Exercise of options, net of withholding taxes	15,000,000		15,000,000
Exercise of options, net of withholding taxes, shares		700,000
Purchases of common stock	(214,500,000)					(214,500,000)
Cash dividends declared	(51,000,000)			(51,000,000)
Ending balance at Sep. 30, 2022	5,783,500,000	$ 2,700,000	5,061,700,000	2,582,300,000	(750,300,000)	(1,169,400,000)	56,500,000
Ending balance, shares at Sep. 30, 2022		271,000,000
Beginning balance at Dec. 31, 2022	$ 6,100,800,000	$ 2,700,000	5,111,600,000	2,740,100,000	(550,100,000)	(1,260,100,000)	56,600,000
Beginning balance, shares at Dec. 31, 2022	271,900,000	271,900,000
Net income	$ 413,700,000			412,700,000			1,000,000
Foreign exchange translation adjustment	(4,800,000)				(4,800,000)
Net change in interest rate swaps	0
Stock-based compensation expense	117,500,000		117,500,000
Exercise of options, net of withholding taxes	79,600,000		79,600,000
Exercise of options, net of withholding taxes, shares		2,500,000
Purchases of common stock	(344,400,000)					(344,400,000)
Cash dividends declared	(160,900,000)			(160,900,000)
Ending balance at Sep. 30, 2023	$ 6,201,500,000	$ 2,700,000	5,308,700,000	2,991,900,000	(554,900,000)	(1,604,500,000)	57,600,000
Ending balance, shares at Sep. 30, 2023	274,400,000	274,400,000
Beginning balance at Jun. 30, 2023	$ 6,237,300,000	$ 2,700,000	5,230,600,000	2,895,600,000	(441,900,000)	(1,506,700,000)	57,000,000
Beginning balance, shares at Jun. 30, 2023		273,200,000
Net income	156,600,000			156,000,000			600,000
Foreign exchange translation adjustment	(113,000,000)				(113,000,000)
Net change in interest rate swaps	0
Stock-based compensation expense	42,100,000		42,100,000
Exercise of options, net of withholding taxes	36,000,000		36,000,000
Exercise of options, net of withholding taxes, shares		1,200,000
Purchases of common stock	(97,800,000)					(97,800,000)
Cash dividends declared	(59,700,000)			(59,700,000)
Ending balance at Sep. 30, 2023	$ 6,201,500,000	$ 2,700,000	$ 5,308,700,000	$ 2,991,900,000	$ (554,900,000)	$ (1,604,500,000)	$ 57,600,000
Ending balance, shares at Sep. 30, 2023	274,400,000	274,400,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share	$ 0.24	$ 0.2	$ 0.64	$ 0.6

Basis of Presentation and Princ

Basis of Presentation and Principles of Consolidation	9 Months Ended
	Sep. 30, 2023
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, 2022, filed with the Securities and Exchange Commission (the “SEC”) on February 28, 2023 (the “2022 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 September 30, 2023, the results of our operations for the three and nine months ended September 30, 2023 and 2022, and our cash flows for the nine months ended September 30, 2023 and 2022. 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, 2022, which were included in the 2022 Form 10-K. The December 31, 2022 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 nine months ended September 30, 2023 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. Recently Adopted Accounting Pronouncement In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting . ASU 2020-04 provides optional expedients and exceptions for applying U.S. GAAP if certain criteria are met to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope . The update provides additional optional guidance on the transition from LIBOR to include derivative instruments that use an interest rate for margining, discounting or contract price alignment. The standard will ease, if warranted, the requirements for accounting for the future effects of the rate reform. Additionally, in December 2022, the FASB issued ASU 2022-06, Reference Rate Reform: Deferral of the Sunset Date of Topic 848, which deferred the sunset date of Topic 848 from December 31, 2022 to December 31, 2024 to align with the amended cessation date of LIBOR. We have adopted ASU 2020-04 and the adoption of this standard did not have a material impact on our financial position, results of operations or cash flows.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	9 Months Ended
	Sep. 30, 2023
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): September 30, December 31, 2023 2022 Land $ 37.1 $ 39.3 Building and improvements 267.0 279.2 Equipment, furniture, and fixtures 541.7 523.7 845.8 842.2 Less: accumulated depreciation ( 524.3 ) ( 498.3 ) Total property, plant and equipment, net $ 321.5 $ 343.9 Depreciation expense for the three and nine months ended September 30, 2023 was $ 18.0 million and $ 55.1 million, respectively. Depreciation expense for the three and nine months ended September 30, 2022 was $ 18.7 million and $ 56.9 million, respectively. As of September 30, 2023 and December 31, 2022, assets held for sale were $ 11.6 million and $ 8.7 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 $ 7.9 million and $ 5.1 million are included in accounts payable and other accrued expenses as of September 30, 2023 and December 31, 2022, respectively, in our condensed consolidated balance sheet.

Investments

Investments	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investments	Note 3—Investments Investments are as follows (in millions): September 30, December 31, 2023 2022 Non-marketable equity securities $ 124.0 $ 124.0 Seed capital investments 26.7 30.6 Marketable equity securities 22.1 24.3 Partnership interests in private equity funds 11.6 15.0 Total investments $ 184.4 $ 193.9 Realized and unrealized gains and losses for our equity securities are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Unrealized losses on equity securities held as of the end of the period $ ( 3.4 ) $ ( 3.4 ) $ ( 0.2 ) $ ( 15.0 ) Realized gains (losses) for equity securities sold during the period 0.1 — 0.7 ( 1.1 ) Total (losses) gains recognized in other (expense) income, net $ ( 3.3 ) $ ( 3.4 ) $ 0.5 $ ( 16.1 ) 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 September 30, 2023 and December 31, 2022, 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 September 30, 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) $ 713.1 $ 713.1 $ — $ — Seed capital investments (2) 26.7 26.7 — — Marketable equity securities (2) 22.1 22.1 — — Deferred compensation liabilities (3) ( 11.5 ) ( 11.5 ) — — Total $ 750.4 $ 750.4 $ — $ — Fair Value Measurements at Reporting Date Using December 31, 2022 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) $ 674.5 $ 674.5 $ — $ — Seed capital investments (2) 30.6 30.6 — — Marketable equity securities (2) 24.3 24.3 — — Deferred compensation liabilities (3) ( 13.6 ) ( 13.6 ) — — Total $ 715.8 $ 715.8 $ — $ — _________________________________________________ (1) Included in Cash and cash equivalents and 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 investments in private equity funds were $ 11.6 million and $ 15.0 million at September 30, 2023 and December 31, 2022, respectively, of which $ 9.2 million and $ 10.8 million, respectively, were measured using net asset value as a practical expedient for fair value and $ 2.4 million and $ 4.2 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. We add new investment products such as mutual funds and exchange traded funds, through our subsidiary, ALPS Advisors, from time to time by providing the initial cash investments as seed capital. We consolidate seed capital investments when our ownership percentage exceeds 50%. Shares in those investments not owned by us are reflected as a redeemable noncontrolling interest on the condensed consolidated balance sheet.

Unconsolidated Affiliates

Unconsolidated Affiliates	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Unconsolidated Affiliates	Note 4—Unconsolidated Affiliates Investments in unconsolidated affiliates are as follows (in millions): September 30, 2023 December 31, 2022 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 % $ 154.1 $ — $ 115.3 $ — International Financial Data Services L.P. 50.0 % 66.8 32.3 85.1 34.8 Pershing Road Development Company, LLC 50.0 % 9.9 56.0 10.6 57.9 Broadway Square Partners, LLP 50.0 % 53.7 29.7 53.8 30.3 Other unconsolidated affiliates 1.8 — 2.1 — Total $ 286.3 $ 118.0 $ 266.9 $ 123.0 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 (Loss). Equity in earnings of unconsolidated affiliates, net are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Orbit Private Investments L.P. $ 26.4 $ — $ 38.8 $ — International Financial Data Services L.P. 1.1 ( 0.6 ) 3.6 0.6 Pershing Road Development Company, LLC 0.2 ( 5.2 ) ( 0.7 ) ( 5.1 ) Broadway Square Partners, LLP — 0.7 — 1.9 Other unconsolidated affiliates ( 0.2 ) — 0.9 ( 0.1 ) Total $ 27.5 $ ( 5.1 ) $ 42.6 $ ( 2.7 )

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2023
Business Combinations [Abstract]
Acquisitions	Note 5—Acquisitions The following unaudited pro forma information is provided for illustrative purposes only and assumes that the acquisitions of Blue Prism Group plc (“Blue Prism”), Hubwise Holdings Limited (“Hubwise”), 5 M’s Minerals Management, LLC (“MineralWare”), the sell-side Tier1 customer relationship management business (“Tier1”) and Complete Financial Ops, Inc. (“CFO”) occurred on January 1, 2021, after giving effect to certain adjustments, including amortization of intangibles, interest, transaction costs and tax effects. This unaudited pro forma information (in millions) should not be relied upon as being indicative of the historical results that would have been obtained if the acquisitions had actually occurred on those dates, nor of the results that may be obtained in the future. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Revenues $ 1,365.9 $ 1,323.5 $ 4,091.2 $ 4,013.3 Net income $ 156.0 $ 160.1 $ 412.4 $ 425.8 During the nine months ended September 30, 2023 and 2022 , we recorded severance expense related to personnel reductions in several of our financial services and healthcare businesses. The amount of severance expense recognized in our Condensed Consolidated Statements of Comprehensive Income (Loss) for the nine months ended September 30, 2023 and 2022 was as follows (in millions): Nine Months Ended September 30, Consolidated Statements of Comprehensive Income (Loss) Classification 2023 2022 Cost of software-enabled services $ 14.5 $ 8.1 Cost of license, maintenance and other related 1.0 2.3 Total cost of revenues 15.5 10.4 Selling and marketing 3.0 2.6 Research and development 2.9 2.0 General and administrative 3.6 0.8 Total operating expenses 9.5 5.4 Total severance expense $ 25.0 $ 15.8

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note 6—Goodwill The change in carrying value of goodwill as of and for the nine months ended September 30, 2023 is as follows (in millions): Balance at December 31, 2022 $ 8,863.0 Adjustments to prior acquisitions ( 0.8 ) Effect of foreign currency translation ( 7.3 ) Balance at September 30, 2023 $ 8,854.9

Debt

Debt	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Debt	Note 7—Debt At September 30, 2023 and December 31, 2022, debt consisted of the following (in millions): September 30, December 31, 2023 2022 Senior secured credit facilities, weighted-average interest rate of 7.31 % and 5.00 %, respectively $ 4,830.1 $ 5,129.1 5.5 % senior notes due 2027 2,000.0 2,000.0 Senior secured credit facilities revolving portion, weighted-average interest rate of 8.75 % 75.0 — Other indebtedness 0.2 0.8 Unamortized original issue discount and debt issuance costs ( 39.3 ) ( 50.3 ) 6,866.0 7,079.6 Less: current portion of long-term debt 127.3 55.7 Long-term debt $ 6,738.7 $ 7,023.9 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-3 $ 1,000.0 April 16, 2025 0.25 % Term Loan B-4 944.3 April 16, 2025 0.25 % Term Loan B-5 1,590.9 April 16, 2025 0.25 % Term Loan B-6 516.5 March 22, 2029 0.25 % Term Loan B-7 778.5 March 22, 2029 0.25 % Revolving Credit Facility 75.0 December 28, 2027 None Senior Notes 2,000.0 September 30, 2027 None In June 2023, we entered into an amendment (the “Amendment”) to our senior secured credit agreement. Pursuant to the Amendment, the interest rate provisions for Term B-3 Loans, Term B-4 Loans and Term B-5 Loans were amended to , at our option, either (a) the Base Rate, plus 0.75% per annum or the (b) Adjusted Term SOFR, which includes a credit spread adjustment set forth in the Credit Agreement of 0.11448%, 0.26161%, or 0.42826% for loans of interest periods of one, three, or six months, respectively, plus 1.75% per annum . Fair Value of Debt The carrying amounts and fair values of financial instruments are as follows (in millions): September 30, 2023 December 31, 2022 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 4,793.7 $ 4,842.4 $ 5,082.2 $ 5,069.0 5.5% senior notes due 2027 1,997.1 1,891.4 1,996.6 1,880.9 Senior secured credit facilities, revolving portion 75.0 74.6 — — Other indebtedness 0.2 0.2 0.8 0.8 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	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Stockholders' Equity	Note 8—Stockholders’ Equity Stock repurchase program In July 2022, 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 2023, our Board of Directors authorized a new stock repurchase program, which also 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. Our authority to repurchase shares under the program will continue until the one-year anniversary of the Board’s authorization, unless earlier terminated by the Board. During the three and nine months ended September 30, 2023 , we repurchased 1.7 million and 6.0 million shares, respectively, of common stock for approximately $ 97.8 million and $ 344.4 million, respectively, which includes a 1% excise tax on share repurchases. During the three and nine months ended September 30, 2022 , we repurchased 3.7 million and 6.0 million shares, respectively, of common stock for approx imately $ 214.5 million and $ 385.4 million. 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 $ 0.20 per share of common stock in each of March and June 2023 and $ 0.24 per share of common stock in September 2023 totaling $ 160.9 million. We paid quarterly cash dividends of $ 0.20 per share of common stock in each of March, June and September 2022, totaling $ 153.4 million in the aggregate. 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, 2022 $ ( 549.0 ) $ ( 1.1 ) $ ( 550.1 ) Net current period other comprehensive loss ( 4.8 ) — ( 4.8 ) Balance, September 30, 2023 $ ( 553.8 ) $ ( 1.1 ) $ ( 554.9 ) Adjustments to accumulated other comprehensive loss are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Interest Rate Swap Unrealized gains (losses) on interest rate swaps $ — $ — $ 6.0 $ ( 1.2 ) $ — $ — $ 8.8 $ ( 1.7 ) Reclassification of gains into net earnings on interest rate swaps — — ( 1.5 ) — — — ( 2.3 ) — Net change in cash flow hedges — — 4.5 ( 1.2 ) — — 6.5 ( 1.7 ) Defined Benefit Pension Unrealized net (losses) gains on defined benefit pension plan — — — — ( 0.1 ) 0.1 ( 0.3 ) ( 0.8 ) Foreign Currency Translation Current period translation adjustments ( 117.2 ) 4.2 ( 263.9 ) 15.3 ( 3.6 ) ( 1.2 ) ( 540.4 ) 28.4 Total other comprehensive (loss) income $ ( 117.2 ) $ 4.2 $ ( 259.4 ) $ 14.1 $ ( 3.7 ) $ ( 1.1 ) $ ( 534.2 ) $ 25.9

Variable Interest Entity

Variable Interest Entity	9 Months Ended
	Sep. 30, 2023
Variable Interest Entity, Measure of Activity [Abstract]
Variable Interest Entity	Note 9—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 as of September 30, 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: September 30, 2023 2022 Assets: Cash and cash equivalents $ 106.1 $ 151.6 Intangible assets 186.7 151.6 Other assets 2.7 — Liabilities: Other liabilities 5.3 17.5

Revenues

Revenues	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenues	Note 10—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 September 30, 2023 and December 31, 2022 , approximately $ 59.7 million and $ 68.0 million, respectively, of deferred revenue is presented net within contract assets arising from the same con tracts. The amount of revenues recognized in the period that was included in the opening deferred revenues balance was $ 94.0 million and $ 397.6 milli on for the three and nine months ended September 30, 2023 , respectively. The amount of revenues recognized in the period that was included in the opening deferred revenues balance was $ 50.5 million and $ 231.8 million for the three and nine months ended September 30, 2022, respectively. As of September 30, 2023, revenue of approximately $ 940.9 million is expected to be recognized from remaining performance obligations for license, maintenance and related revenues, of which $ 461.2 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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 United States $ 941.2 $ 927.1 $ 2,838.9 $ 2,787.5 United Kingdom 160.1 138.2 473.4 433.8 Europe (excluding United Kingdom), Middle East and Africa 116.2 105.2 337.1 292.8 Asia-Pacific and Japan 67.6 62.5 204.2 193.3 Canada 55.3 64.9 164.5 169.5 Americas, excluding United States and Canada 25.5 23.1 73.1 67.8 Total $ 1,365.9 $ 1,321.0 $ 4,091.2 $ 3,944.7 The following table disaggregates our revenues by source (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Software-enabled services $ 1,122.1 $ 1,049.8 $ 3,342.8 $ 3,205.7 Maintenance and term licenses 211.6 237.4 643.5 639.5 Professional services 26.8 27.7 83.1 81.4 Perpetual licenses 5.4 6.1 21.8 18.1 Total $ 1,365.9 $ 1,321.0 $ 4,091.2 $ 3,944.7

Stock Based Compensation

Stock Based Compensation	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Stock Based Compensation	Note 11—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 (Loss) for the three and nine months ended September 30, 2023 and 2022 was as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, Condensed Consolidated Statements of Comprehensive Income (Loss) Classification 2023 2022 2023 2022 Cost of software-enabled services $ 14.5 $ 2.3 $ 42.9 $ 34.6 Cost of license, maintenance and other related 1.8 1.3 5.1 4.0 Total cost of revenues 16.3 3.6 48.0 38.6 Selling and marketing 7.3 1.5 21.8 17.2 Research and development 5.8 2.0 15.8 12.3 General and administrative 12.7 0.3 31.9 25.2 Total operating expenses 25.8 3.8 69.5 54.7 Total stock-based compensation expense $ 42.1 $ 7.4 $ 117.5 $ 93.3 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. During the three months ended September 30, 2022, we recorded an adjustment to reduce previously recorded stock-based compensation expense relating to performance-based equity awards by $ 25.7 million as the number of performance-based options and performance-based units 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 nine months ended September 30, 2023 (shares in millions): Stock Options and SARs PSUs and RSUs Outstanding at December 31, 2022 43.6 3.4 Granted 0.6 1.4 Cancelled/forfeited ( 1.6 ) ( 0.5 ) Exercised ( 2.5 ) — Vested — ( 0.1 ) Outstanding at September 30, 2023 40.1 4.2

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Note 12—Income Taxes The effective tax rate was 24.6 % and 25.0 % for the three months ended September 30, 2023 and 2022, respectively, and 28.8 % and 26.9 % for the nine months ended September 30, 2023 and 2022, respectively. The change in the effective tax rate for the three months ended September 30, 2023 compared to the respective prior year period was primarily due to an increased recognition of windfall tax benefits from stock awards in the current year and a change in the composition of income before income taxes from foreign and domestic tax jurisdictions. The change in the effective tax rate for the nine months ended September 30, 2023 compared to the respective prior year period was primarily due to an increase in uncertain tax positions, partially offset by an increased recognition of windfall tax benefits from stock awards in the current year and a change in the composition of income before income taxes from foreign and domestic tax jurisdictions.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings per Share	Note 13—Earnings per Share The following table sets forth the computation of basic and diluted EPS (in millions, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Net income attributable to SS&C common stockholders $ 156.0 $ 160.0 $ 412.7 $ 442.7 Shares attributable to SS&C: Weighted-average common shares outstanding – used in calculation of basic EPS 247.5 253.9 248.8 254.8 Weighted-average common stock equivalents – stock options and restricted shares 6.4 7.0 6.5 8.9 Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS 253.9 260.9 255.3 263.7 Earnings per share attributable to SS&C common stockholders – Basic $ 0.63 $ 0.63 $ 1.66 $ 1.74 Earnings per share attributable to SS&C common stockholders – Diluted $ 0.61 $ 0.61 $ 1.62 $ 1.68 Weighted-average stock options, SARs, RSUs and PSUs representing 23.2 mill ion and 23.5 million shares were outstanding for the three and nine months ended September 30, 2023 , 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 22.0 million shares were outstanding for the three and nine months ended September 30, 2022 , 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	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14—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. Legal Proceedings In connection with recent legal proceedings related to the ongoing DST ERISA matters described below, including the settlement agreement which was submitted to the United States District Court for the Southern District of New York for preliminary approval on July 14, 2023, and which was granted final approval on October 25, 2023, we recorded an accrued liability of $ 55.1 million. Of this amount, $ 3.6 million of expense was recorded in the nine months ended September 30, 2023, $ 8.1 million of expense was recorded in 2022 and $ 43.4 million of expense was recorded in 2021. Expense amounts are included in other (expense) income, net on the Condensed Consolidated Statements of Comprehensive Income (Loss). As of September 30, 2023, the accrued liability decreased to $ 51.0 million as a result of a $ 4.1 million scheduled payment. The actions described herein will not be dismissed until the deadline to appeal the final approval order expires on November 27, 2023, assuming no appeal is taken, or after any appeals have been finally resolved. Due to the inherent uncertainties associated with the resolution of these matters, the ultimate resolution of and any additional potential exposure related to these matters are uncertain at this time. On September 1, 2017, a putative representative action was filed on behalf of the DST 401(k) Profit Sharing Plan (the “Plan”) in the United States District Court for the Southern District of New York, captioned Ferguson, et al v. Ruane, Cunniff & Goldfarb Inc., et al. (“Ferguson”), naming as defendants DST, the Compensation Committee of DST’s Board of Directors, the Advisory Committee of the Plan and certain of DST’s present and/or former officers and directors (collectively the “DST Defendants”), alleging breach of fiduciary duties and other violations of the Employee Retirement Income Security Act (“ERISA”). The DST Defendants answered the operative complaint and asserted crossclaims for contribution and/or indemnification against Ruane, Cunniff & Goldfarb Inc. (“Ruane”). On January 9, 2020, Ruane filed an amended answer to the amended complaint and asserted crossclaims for contribution and/or indemnification against DST. On March 8, 2021, the Court denied without prejudice the plaintiffs’ (the “Ferguson Plaintiffs”) then-pending motions for leave to file a third amended complaint and for class certification, ordering that the parties address the effect, if any, on the Ferguson Plaintiffs’ motions of the March 4, 2021 decision by the United States Court of Appeals for the Second Circuit in Cooper v. Ruane, Cunniff & Goldfarb Inc. The Ferguson Plaintiffs renewed their motions for leave to file a third amended complaint and for class certification, which motions were fully briefed on May 10, 2021. On August 17, 2021, the Court certified a mandatory, non-opt-out class under Federal Rule of Civil Procedure 23(b)(1) that includes all plan participants from March 14, 2010 through July 31, 2016 other than 28 plan fiduciaries. Arbitration Claimants, and the Canfield Plaintiffs and Mendon Plaintiffs, each as defined below, filed petitions under Federal Rule of Civil Procedure 23(f) with the Second Circuit on August 30, 2021 and August 31, 2021, respectively, seeking interlocutory review of the Ferguson class certification order, which the Ferguson Plaintiffs and the DST Defendants opposed. The Second Circuit denied the Rule 23(f) petitions on May 24, 2022 and May 25, 2022, respectively. On February 4, 2022, the Ferguson Plaintiffs filed a third amended complaint, which included the class allegations. On March 7, 2022, the DST Defendants and Ruane each filed answers to the Ferguson Plaintiffs’ third amended complaint and reasserted their respective‌ cross-claims. On August 23, 2021, the DST Defendants moved for a temporary restraining order and preliminary injunction against other proceedings, including the below-described arbitrations, which arise out of or relate to the allegations in Ferguson. Following briefing, on November 18, 2021, the Court granted the DST Defendants’ motion and entered a preliminary injunction enjoining the Ferguson class members, including Arbitration Claimants, from instituting new actions or litigating in arbitration or other proceedings against the DST Defendants matters arising out of or relating to the facts or transactions alleged in the operative Ferguson complaint. On November 18, 2021, the Court also ordered the DST Defendants and Arbitration Claimants to submit briefing regarding how the arbitration awards that had been entered against the DST Defendants should be handled in light of the Court’s class certification order and preliminary injunction. On December 15, 2021, Arbitration Claimants and the Canfield Plaintiffs and Mendon Plaintiffs appealed the Court’s preliminary injunction. On December 23, 2021 and January 26, 2022, the DST Defendants, Arbitration Claimants, and the Ferguson Plaintiffs submitted briefs concerning the treatment of the arbitration awards that had been entered against the DST Defendants. On December 31, 2021, Arbitration Claimants sought an immediate stay of the preliminary injunction pending their appeal to the Second Circuit. On January 3, 2022, the Court denied Arbitration Claimants’ motion for an immediate stay and ordered the DST Defendants to show cause as to why the Court should not issue a stay of the preliminary injunction pending appeal. On February 3, 2022, the Court denied Arbitration Claimants’ motion to stay the preliminary injunction pending appeal. The Court also held that it would determine the status of the arbitration awards already entered against DST at final judgment in the Ferguson action, either after trial or after settlement. On February 4, 2022, Arbitration Claimants filed a motion in the Second Circuit to stay the preliminary injunction pending their appeal of the Court’s preliminary injunction. On June 7, 2022, the Second Circuit denied Arbitration Claimants’ motion to stay the preliminary injunction pending appeal. On February 8, 2022, Arbitration Claimants and the Canfield Plaintiffs and Mendon Plaintiffs appealed the Court’s February 3, 2022 order. The February 8, 2022 appeal was consolidated with the December 15, 2021 appeal of the preliminary injunction. On May 17, 2022, Arbitration Claimants and the Canfield Plaintiffs and Mendon Plaintiffs filed their opening brief in the consolidated appeals. The DST Defendants filed their answering brief on September 15, 2022, and the reply was filed on October 20, 2022. On April 20, 2023, the Second Circuit heard oral argument on the appeals. On July 18, 2023, the DST Defendants submitted an unopposed motion to stay these appeals pending the Ferguson Court’s consideration of whether to preliminarily and finally approve a settlement that was proposed to that court on July 14, 2023, as discussed below, and which, now that is has been approved, resolves these appeals. On July 19, 2023, the Second Circuit granted the motion. On July 10, 2020, the Ferguson Plaintiffs and the DST Defendants had reached an agreement in principle to settle the class claims for $ 27 million, subject to the occurrence of certain conditions, including: Court certification of a “non‑opt-out” class in the case that includes as class members all participants of the Plan, Court approval of the settlement in accordance with applicable law and the satisfactory resolution of claims made by certain other litigants. On September 18, 2020, the parties disclosed to the Court that the Ferguson Plaintiffs and Ruane also had reached a settlement in principle, subject to Court approval. The Ferguson‌ Plaintiffs and the DST Defendants entered into a settlement agreement dated January 8, 2021 memorializing the terms of their proposed settlement, which was filed by the Ferguson Plaintiffs with the Court on the same date. On January 12, 2021, the Ferguson Plaintiffs moved for preliminary approval of the settlement with the DST Defendants, as well as preliminary approval of a separate settlement reached between the Ferguson Plaintiffs and Ruane. Arbitration Claimants and the U.S. Department of Labor (“DOL”) objected to various aspects of those settlements in filings dated January 15, 2021, January 27, 2021, and February 5, 2021. On August 17, 2021, the Court denied the Ferguson Plaintiffs’ motion for preliminary approval of the settlement on the terms proposed. On November 10, 2022, the Ferguson parties filed a notice of settlement and joint motion to stay the proceedings. The notice informed the Court that the parties had reached a settlement in principle. On November 18, 2022, the Court stayed the Ferguson action, which stay was extended pending the Court’s consideration of the preliminary and final approval motions, as explained further below.‌ On April 5, 2023, Arbitration Claimants filed a motion to decertify the Rule 23(b)(1) class previously certified by the Court, or, in the alternative, to amend the class definition to remove Arbitration Claimants or permit them to opt out of the class. The Court held in abeyance the deadline to respond to the motion to allow the parties to conduct settlement discussions.‌ On April 7, 2023, the Ferguson parties filed a joint status report informing the Court that they had been working diligently with the DOL to finalize all necessary papers to document the settlement reached to resolve the Ferguson matter and all other related matters, and that the parties anticipated filing a final executed settlement agreement and supporting exhibits by April 14, 2023. On April 14, 2023, the DST Defendants informed the Court that, in response to a request from Arbitration Claimants, the United States District Court for the Western District of Missouri had entered an injunction, as discussed below, enjoining DST from entering into or effectuating an agreement that settles, disposes of, interferes with, invalidates, satisfies, sets aside, alters, or otherwise compromises any of 55 judgments confirming arbitration awards entered by the Western District of Missouri on March 31, 2023.‌ On June 30, 2023, the Ferguson parties submitted a joint status report informing the Court that they, together with the DOL and the Arbitration Claimants, had reached an agreement in principle to resolve the Ferguson matter, together with each of the related proceedings, and that the parties were working to prepare a complete written settlement agreement and supporting exhibits. The parties stated to the Court that the settlement would include a proposed schedule for preliminary approval, notice and a fairness hearing. On July 5, 2023, the Court stayed all deadlines pending its consideration of the anticipated preliminary approval motion. On July 14, 2023, the Ferguson Plaintiffs filed an unopposed motion for preliminary approval of the settlement, together with a settlement agreement and exhibits. The settlement agreement was signed by the Ferguson Plaintiffs, DST, Ruane, and Ruane’s former Chairman and Chief Executive Officer Robert D. Goldfarb (“Goldfarb”), and, as to certain provisions, the Secretary of the DOL, counsel for the Arbitration Claimants, and counsel for the Canfield Plaintiffs and the Mendon Plaintiffs (described below). Pursuant to the proposed settlement, DST, Ruane, and Goldfarb will pay a total of $ 124,625,000 ; and all pending matters related to the Plan will be dismissed with prejudice and claims relating in any way thereto will be released. On August 3, 2023, the Court preliminarily approved the settlement. On October 3, 2023, the Ferguson Plaintiffs filed an unopposed motion for final approval of the settlement. On October 23, 2023, the Court held a fairness hearing, and on October 25, 2023, the Court granted final approval and entered a Final Approval Order, Judgment, and Permanent Injunction, and directed that the case be closed. DST will pay approximately $ 55.1 million to fund its share of the global settlement, and all pending related claims will be discharged. DST expects to make the majority of its portion of the settlement payment, at the earliest, during the fourth quarter of 2023, subject to no appeals of the final approval order being filed by November 27, 2023, at which point all pending DST ERISA matters described herein would be dismissed with prejudice, and subject to all other conditions set forth in the settlement agreement being satisfied. On September 28, 2018, a complaint was filed in the United States District Court for the Southern District of New York captioned Robert Canfield, et al. v. SS&C Technologies Holdings, Inc., et al., on behalf of five individual plaintiffs (the “Canfield Plaintiffs”). On November 5, 2018, a similar complaint was filed in the United States District Court for the Southern District of New York captioned Mark Mendon, et al. v. SS&C Technologies Holdings, Inc., et al., on behalf of two individual plaintiffs (the “Mendon Plaintiffs”). These complaints named as defendants SS&C, the DST Defendants, and Ruane. The underlying claim in each complaint was the same as in the above-described Ferguson matter, with the exception that these actions purported to be brought as individual actions and not putative class actions. On July 10, 2020, the Court granted the DST Defendants’ motion to disqualify plaintiffs’ counsel in the Canfield and Mendon actions. On March 17, 2021, the Court denied the DST Defendants’ motion to disqualify counsel from the arbitrations described below. On April 12, 2021, the Canfield Plaintiffs and Mendon Plaintiffs filed notices of voluntary dismissal dismissing their claims against Ruane with prejudice, which were entered by the Court on April 13, 2021. On April 22, 2021, the DST Defendants filed motions to dismiss the Canfield and Mendon actions. Those motions were fully briefed on May 28, 2021. On November 19, 2021, the Court dismissed the Canfield and Mendon actions. On December 17, 2021, the Canfield Plaintiffs and Mendon Plaintiffs appealed to the Second Circuit the Court’s November 19, 2021 orders dismissing their respective actions. On May 17, 2022, the Canfield Plaintiffs and Mendon Plaintiffs filed their opening briefs in those appeals. The DST Defendants filed their answering briefs on September 15, 2022. The Canfield Plaintiffs and Mendon Plaintiffs filed their reply briefs on October 20, 2022. On April 20, 2023, the Second Circuit heard oral argument on the appeals. On July 18, 2023, the DST Defendants submitted an unopposed motion to stay these appeals pending the Ferguson Court’s consideration of whether to preliminarily and finally approve the settlement that was proposed to that court on July 14, 2023, as discussed above, and which, now that is has been approved, resolves these appeals. On July 19, 2023, the Second Circuit granted the motion. On October 8, 2019, a substantially similar action to the above-described Ferguson, Canfield, Mendon and below-described arbitration matters captioned Scalia v. Ruane, Cunniff & Goldfarb Inc. was filed by the DOL in the United States District Court for the Southern District of New York naming as defendants DST, the Advisory Committee of the Plan, the Compensation Committee of DST’s Board of Directors and certain of DST’s former officers and directors, and alleging that the DST Defendants breached fiduciary duties in violation of ERISA in connection with the Plan. The complaint also named as defendants Ruane and Goldfarb. In the complaint, the DOL sought disgorgement, damages and any other appropriate injunctive or equitable relief. The DST Defendants moved to dismiss the complaint on December 4, 2020 on the ground that the DOL’s complaint was time-barred. Other defendants also filed motions to dismiss on the same and other grounds. Briefing on the motions to dismiss was completed on February 5, 2021. On March 28, 2022, the court denied defendants’ motions to dismiss, and Martin J. Walsh was substituted for Eugene Scalia as the plaintiff. On April 11, 2022, the DST Defendants answered the DOL’s complaint. On May 5, 2023, the Court stayed the action, then captioned Julie A. Su v. Ruane, Cunniff & Goldfarb Inc., et al., which stay was extended pending the Court’s consideration of the preliminary and final approval motions discussed above. On June 30, 2023, the parties to the DOL action informed the Court that they had reached an agreement in principle to resolve the Su action, together with each of the related proceedings, including the above-described Ferguson matter, and that the parties were working to agree on a complete written stipulation and supporting exhibits. The parties stated that the settlement would include a proposed schedule for preliminary approval, notice and a fairness hearing. On July 5, 2023, the Court stayed all deadlines pending its consideration of the anticipated preliminary approval motion in Ferguson. On July 14, 2023, the parties filed a Joint Stipulation of Settlement and Release of Claims, together with a settlement agreement and exhibits, as discussed further above. On October 25, 2023, in connection with the final approval of the parties’ settlement, the Court directed that the case be closed. DST, the Advisory Committee of the Plan, and the Compensation Committee of DST’s Board of Directors have been named in 579 substantially similar individual demands for arbitration to date, by former and current DST employees demanding arbitration under the DST Employee Arbitration Program and Agreement (the “Arbitration Claimants”). The underlying claim in each is the same as in the above-described Ferguson matter, with the exception that the arbitrations purport to be brought as individual actions. On November 24, 2021, in light of the preliminary injunction entered in Ferguson discussed above, the American Arbitration Association (the “AAA”) ceased administration of the arbitrations brought by members of the Ferguson class, which includes all of the Arbitration Claimants with the exception of certain former Plan fiduciaries. As of November 24, 2021, 557 demands for arbitration had been submitted to the AAA. As of the date on which the preliminary injunction was entered, those individual arbitrations were at various stages depending on the particular proceeding. Certain of those arbitrations had resulted in awards against DST and others had resulted in decisions finding no liability as against DST. Many of those decisions were subject to further appeal within the AAA. Certain of the arbitration proceedings had been resolved in whole or in part by settlement. Since November 24, 2021,‌ the AAA has administered only those arbitration proceedings associated with claimants who are not members of the Ferguson class, certain of which have resulted in awards against DST.‌ Between August 20, 2021 and November 17, 2021, counsel for Arbitration Claimants filed 177 motions to confirm certain of the arbitration awards. DST filed responses to those motions. Between October 4 and December 22, 2021, the Western District of Missouri issued orders confirming those 177 arbitration awards and entering judgments against DST. DST appealed those judgments to the United States Court of Appeals for the Eighth Circuit. On November 20, 2021, DST requested that the Eighth Circuit stay the pending appeals in light of the preliminary injunction entered in Ferguson. On December 3, 2021, the Eighth Circuit ordered the parties to brief DST’s stay request, and on January 3, 2022, the Eighth Circuit declined to stay the briefing schedule on the pending appeals and consolidated those appeals. DST filed its opening brief in the Eighth Circuit on March 24, 2022. Arbitration Claimants filed their opposition brief on April 26, 2022, and DST filed its reply brief on May 18, 2022. The Eighth Circuit heard oral argument on June 14, 2022. On November 28, 2022, the Eighth Circuit vacated the judgments confirming the 177 arbitration awards and remanded those actions to the Western District of Missouri to determine whether the district court had subject-matter jurisdiction and whether the district court should transfer the cases to the Southern District of New York. On December 14, 2022, the parties submitted simultaneous briefing to the Western District of Missouri regarding transfer.‌ On March 31, 2023, the Western District of Missouri issued an order finding that it had subject-matter jurisdiction over 55 of the 177 confirmation actions, and confirmed the 55 arbitration awards in those actions and entered judgments against DST. The court dismissed the other 122 on the ground that it lacked subject-matter jurisdiction. The court further denied DST’s motion to transfer any of the 177 confirmation actions to the Southern District of New York. On April 28, 2023, DST appealed these judgments to the Eighth Circuit. On July 17, 2023, DST submitted an unopposed motion to stay these appeals pending the Ferguson Court’s consideration of whether to preliminarily and finally approve the settlement that was proposed to that court on July 14, 2023, as discussed above, and which, now that it has been approved, resolves these appeals. On July 18, 2023, the Eighth Circuit granted the motion.‌ On April 10, 2023, Arbitration Claimants filed in the Western District of Missouri an emergency motion seeking a Temporary Restraining Order and Preliminary Injunction prohibiting DST from settling or attempting to settle through any class or representative action the 55 individual arbitration awards the court had confirmed in its March 31, 2023 order, or any part thereof, unless such settlement was entered into individually and voluntarily by these 55 individuals. On April 10, 2023, the Western District of Missouri entered a preliminary injunction against DST in a text-only docket entry, which stated that “[i]n each of the 55 cases in which this Court has subject matter jurisdiction and entered an order on March 31, 2023 confirming an arbitration award, the Court hereby enjoins DST or anyone on behalf of DST from entering into or effectuating an agreement that settles, disposes of, interferes with, invalidates, satisfies, sets aside, alters, or otherwise compromises each such judgment, without the express written consent of each Confirmation Plaintiff in whose favor judgment was entered by this Court.” On April 12, 2023, DST appealed the preliminary injunction to the Eighth Circuit. On April 27, 2023, DST filed a motion in the Western District of Missouri seeking a stay of its preliminary injunction pending appeal. On May 5, 2023, the Western District of Missouri denied DST’s motion to stay the injunction. On July 17, 2023, DST submitted to the Eighth Circuit an unopposed motion to stay the appeals pending the Ferguson Court’s consideration of whether to preliminarily and finally approve the settlement that was proposed to that court on July 14, 2023, as discussed above, and which, now that it has been approved, resolves these appeals. On July 18, 2023, the Eighth Circuit granted the motion. On November 9, 2021, Arbitration Claimants’ counsel filed in the Western District of Missouri a petition to compel arbitration captioned Addison v. DST Systems, Inc. (the “Addison Petition”) on behalf of 155 Arbitration Claimants, which DST opposed. On September 15, 2022, the Western District of Missouri dismissed the Addison Petition without prejudice, subject to that action being reopened after the Eighth Circuit’s rulings on DST’s appeals of the 177 orders confirming arbitration awards. On June 20, 2023, the Western District of Missouri reopened the Addison case. On July 19, 2023, the Western District of Missouri ordered that the Addison case be stayed in light of the Ferguson settlement. On November 11, 2020, DST, the Compensation Committee of DST’s Board of Directors, and the Advisory Committee of the Plan as plaintiffs filed a complaint in the United States District Court for the Southern District of New York against Ruane, certain of its related entities, and certain of its current and former employees. The complaint asserts claims for contribution, indemnification, and breach of contract arising out of Ruane’s management of the Plan’s investments and claims for actual and constructive fraudulent conveyances. On May 24, 2021, Defendant Goldfarb filed an answer to the complaint. On December 17, 2021, the remaining defendants filed a motion to dismiss the DST plaintiffs’ complaint. On July 27, 2022, the Court denied without prejudice the pending motion to dismiss, and ordered the parties to submit by October 3, 2022 a joint status report with a new briefing schedule on the motion. On October 3, 2022, the parties filed a joint status report with a new briefing schedule on the motion, which the Court approved on October 4, 2022. On January 31, 2023, the Court stayed the proceedings, which stay was subsequently extended. On July 5, 2023, the Court stayed all deadlines pending its consideration of the anticipated preliminary approval motion in Ferguson. As described above, on July 14, 2023, the Ferguson Plaintiffs filed an unopposed motion for preliminary approval of a proposed settlement with the Ferguson Court, together with a proposed settlement that, now that it has been approved, resolves this action and all of the actions described above.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Note 15—Subsequent Events Acquisition On October 1, 2023 , we acquired the managed funds administration business from Iress Limited, OneVue Fund Services Pty Ltd. (“OneVue”) , for approximately $ 32.5 million in cash. OneVue provides software and services for trading and market data, financial advice, investment management, mortgages, superannuation, life and pensions and data intelligence.

Basis of Presentation and Pri_2

Basis of Presentation and Principles of Consolidation (Policies)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entity Policy	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.
Recently Adopted Accounting Pronouncement	Recently Adopted Accounting Pronouncement In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting . ASU 2020-04 provides optional expedients and exceptions for applying U.S. GAAP if certain criteria are met to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope . The update provides additional optional guidance on the transition from LIBOR to include derivative instruments that use an interest rate for margining, discounting or contract price alignment. The standard will ease, if warranted, the requirements for accounting for the future effects of the rate reform. Additionally, in December 2022, the FASB issued ASU 2022-06, Reference Rate Reform: Deferral of the Sunset Date of Topic 848, which deferred the sunset date of Topic 848 from December 31, 2022 to December 31, 2024 to align with the amended cessation date of LIBOR. We have adopted ASU 2020-04 and the adoption of this standard did not have a material impact on our financial position, results of operations or cash flows.

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2023
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): September 30, December 31, 2023 2022 Land $ 37.1 $ 39.3 Building and improvements 267.0 279.2 Equipment, furniture, and fixtures 541.7 523.7 845.8 842.2 Less: accumulated depreciation ( 524.3 ) ( 498.3 ) Total property, plant and equipment, net $ 321.5 $ 343.9

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Summary of Investments	Investments are as follows (in millions): September 30, December 31, 2023 2022 Non-marketable equity securities $ 124.0 $ 124.0 Seed capital investments 26.7 30.6 Marketable equity securities 22.1 24.3 Partnership interests in private equity funds 11.6 15.0 Total investments $ 184.4 $ 193.9
Schedule of Realized and Unrealized Gains and Losses on Investments	Realized and unrealized gains and losses for our equity securities are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Unrealized losses on equity securities held as of the end of the period $ ( 3.4 ) $ ( 3.4 ) $ ( 0.2 ) $ ( 15.0 ) Realized gains (losses) for equity securities sold during the period 0.1 — 0.7 ( 1.1 ) Total (losses) gains recognized in other (expense) income, net $ ( 3.3 ) $ ( 3.4 ) $ 0.5 $ ( 16.1 )
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 September 30, 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) $ 713.1 $ 713.1 $ — $ — Seed capital investments (2) 26.7 26.7 — — Marketable equity securities (2) 22.1 22.1 — — Deferred compensation liabilities (3) ( 11.5 ) ( 11.5 ) — — Total $ 750.4 $ 750.4 $ — $ — Fair Value Measurements at Reporting Date Using December 31, 2022 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) $ 674.5 $ 674.5 $ — $ — Seed capital investments (2) 30.6 30.6 — — Marketable equity securities (2) 24.3 24.3 — — Deferred compensation liabilities (3) ( 13.6 ) ( 13.6 ) — — Total $ 715.8 $ 715.8 $ — $ —

Unconsolidated Affiliates (Tabl

Unconsolidated Affiliates (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments in Unconsolidated Affiliates	Investments in unconsolidated affiliates are as follows (in millions): September 30, 2023 December 31, 2022 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 % $ 154.1 $ — $ 115.3 $ — International Financial Data Services L.P. 50.0 % 66.8 32.3 85.1 34.8 Pershing Road Development Company, LLC 50.0 % 9.9 56.0 10.6 57.9 Broadway Square Partners, LLP 50.0 % 53.7 29.7 53.8 30.3 Other unconsolidated affiliates 1.8 — 2.1 — Total $ 286.3 $ 118.0 $ 266.9 $ 123.0
Schedule of Equity in Earnings of Unconsolidated Affiliates	Equity in earnings of unconsolidated affiliates, net are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Orbit Private Investments L.P. $ 26.4 $ — $ 38.8 $ — International Financial Data Services L.P. 1.1 ( 0.6 ) 3.6 0.6 Pershing Road Development Company, LLC 0.2 ( 5.2 ) ( 0.7 ) ( 5.1 ) Broadway Square Partners, LLP — 0.7 — 1.9 Other unconsolidated affiliates ( 0.2 ) — 0.9 ( 0.1 ) Total $ 27.5 $ ( 5.1 ) $ 42.6 $ ( 2.7 )

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2023
Business Combinations [Abstract]
Summary of Unaudited Pro Forma Information	This unaudited pro forma information (in millions) should not be relied upon as being indicative of the historical results that would have been obtained if the acquisitions had actually occurred on those dates, nor of the results that may be obtained in the future. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Revenues $ 1,365.9 $ 1,323.5 $ 4,091.2 $ 4,013.3 Net income $ 156.0 $ 160.1 $ 412.4 $ 425.8
Schedule of Severance Expense Recognized	The amount of severance expense recognized in our Condensed Consolidated Statements of Comprehensive Income (Loss) for the nine months ended September 30, 2023 and 2022 was as follows (in millions): Nine Months Ended September 30, Consolidated Statements of Comprehensive Income (Loss) Classification 2023 2022 Cost of software-enabled services $ 14.5 $ 8.1 Cost of license, maintenance and other related 1.0 2.3 Total cost of revenues 15.5 10.4 Selling and marketing 3.0 2.6 Research and development 2.9 2.0 General and administrative 3.6 0.8 Total operating expenses 9.5 5.4 Total severance expense $ 25.0 $ 15.8

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2023
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 nine months ended September 30, 2023 is as follows (in millions): Balance at December 31, 2022 $ 8,863.0 Adjustments to prior acquisitions ( 0.8 ) Effect of foreign currency translation ( 7.3 ) Balance at September 30, 2023 $ 8,854.9

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of Component of Debt	At September 30, 2023 and December 31, 2022, debt consisted of the following (in millions): September 30, December 31, 2023 2022 Senior secured credit facilities, weighted-average interest rate of 7.31 % and 5.00 %, respectively $ 4,830.1 $ 5,129.1 5.5 % senior notes due 2027 2,000.0 2,000.0 Senior secured credit facilities revolving portion, weighted-average interest rate of 8.75 % 75.0 — Other indebtedness 0.2 0.8 Unamortized original issue discount and debt issuance costs ( 39.3 ) ( 50.3 ) 6,866.0 7,079.6 Less: current portion of long-term debt 127.3 55.7 Long-term debt $ 6,738.7 $ 7,023.9
Schedule of Senior Secured Credit Facilities and Senior Notes [Table Text Block]	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-3 $ 1,000.0 April 16, 2025 0.25 % Term Loan B-4 944.3 April 16, 2025 0.25 % Term Loan B-5 1,590.9 April 16, 2025 0.25 % Term Loan B-6 516.5 March 22, 2029 0.25 % Term Loan B-7 778.5 March 22, 2029 0.25 % Revolving Credit Facility 75.0 December 28, 2027 None Senior Notes 2,000.0 September 30, 2027 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): September 30, 2023 December 31, 2022 Carrying Fair Carrying Fair Amount Value Amount Value Financial liabilities: Senior secured credit facilities $ 4,793.7 $ 4,842.4 $ 5,082.2 $ 5,069.0 5.5% senior notes due 2027 1,997.1 1,891.4 1,996.6 1,880.9 Senior secured credit facilities, revolving portion 75.0 74.6 — — Other indebtedness 0.2 0.2 0.8 0.8

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2022 $ ( 549.0 ) $ ( 1.1 ) $ ( 550.1 ) Net current period other comprehensive loss ( 4.8 ) — ( 4.8 ) Balance, September 30, 2023 $ ( 553.8 ) $ ( 1.1 ) $ ( 554.9 )
Schedule of Adjustments to Accumulated Other Comprehensive Loss	Adjustments to accumulated other comprehensive loss are as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Pretax Tax Effect Interest Rate Swap Unrealized gains (losses) on interest rate swaps $ — $ — $ 6.0 $ ( 1.2 ) $ — $ — $ 8.8 $ ( 1.7 ) Reclassification of gains into net earnings on interest rate swaps — — ( 1.5 ) — — — ( 2.3 ) — Net change in cash flow hedges — — 4.5 ( 1.2 ) — — 6.5 ( 1.7 ) Defined Benefit Pension Unrealized net (losses) gains on defined benefit pension plan — — — — ( 0.1 ) 0.1 ( 0.3 ) ( 0.8 ) Foreign Currency Translation Current period translation adjustments ( 117.2 ) 4.2 ( 263.9 ) 15.3 ( 3.6 ) ( 1.2 ) ( 540.4 ) 28.4 Total other comprehensive (loss) income $ ( 117.2 ) $ 4.2 $ ( 259.4 ) $ 14.1 $ ( 3.7 ) $ ( 1.1 ) $ ( 534.2 ) $ 25.9

Variable Interest Entity (Table

Variable Interest Entity (Tables)	9 Months Ended
	Sep. 30, 2023
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 as of September 30, 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: September 30, 2023 2022 Assets: Cash and cash equivalents $ 106.1 $ 151.6 Intangible assets 186.7 151.6 Other assets 2.7 — Liabilities: Other liabilities 5.3 17.5

Revenues (Tables)

Revenues (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 United States $ 941.2 $ 927.1 $ 2,838.9 $ 2,787.5 United Kingdom 160.1 138.2 473.4 433.8 Europe (excluding United Kingdom), Middle East and Africa 116.2 105.2 337.1 292.8 Asia-Pacific and Japan 67.6 62.5 204.2 193.3 Canada 55.3 64.9 164.5 169.5 Americas, excluding United States and Canada 25.5 23.1 73.1 67.8 Total $ 1,365.9 $ 1,321.0 $ 4,091.2 $ 3,944.7 The following table disaggregates our revenues by source (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Software-enabled services $ 1,122.1 $ 1,049.8 $ 3,342.8 $ 3,205.7 Maintenance and term licenses 211.6 237.4 643.5 639.5 Professional services 26.8 27.7 83.1 81.4 Perpetual licenses 5.4 6.1 21.8 18.1 Total $ 1,365.9 $ 1,321.0 $ 4,091.2 $ 3,944.7

Stock Based Compensation (Table

Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2023
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 (Loss) for the three and nine months ended September 30, 2023 and 2022 was as follows (in millions): Three Months Ended September 30, Nine Months Ended September 30, Condensed Consolidated Statements of Comprehensive Income (Loss) Classification 2023 2022 2023 2022 Cost of software-enabled services $ 14.5 $ 2.3 $ 42.9 $ 34.6 Cost of license, maintenance and other related 1.8 1.3 5.1 4.0 Total cost of revenues 16.3 3.6 48.0 38.6 Selling and marketing 7.3 1.5 21.8 17.2 Research and development 5.8 2.0 15.8 12.3 General and administrative 12.7 0.3 31.9 25.2 Total operating expenses 25.8 3.8 69.5 54.7 Total stock-based compensation expense $ 42.1 $ 7.4 $ 117.5 $ 93.3
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 nine months ended September 30, 2023 (shares in millions): Stock Options and SARs PSUs and RSUs Outstanding at December 31, 2022 43.6 3.4 Granted 0.6 1.4 Cancelled/forfeited ( 1.6 ) ( 0.5 ) Exercised ( 2.5 ) — Vested — ( 0.1 ) Outstanding at September 30, 2023 40.1 4.2

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Net income attributable to SS&C common stockholders $ 156.0 $ 160.0 $ 412.7 $ 442.7 Shares attributable to SS&C: Weighted-average common shares outstanding – used in calculation of basic EPS 247.5 253.9 248.8 254.8 Weighted-average common stock equivalents – stock options and restricted shares 6.4 7.0 6.5 8.9 Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS 253.9 260.9 255.3 263.7 Earnings per share attributable to SS&C common stockholders – Basic $ 0.63 $ 0.63 $ 1.66 $ 1.74 Earnings per share attributable to SS&C common stockholders – Diluted $ 0.61 $ 0.61 $ 1.62 $ 1.68

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment and Related Accumulated Depreciation (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 845.8	$ 842.2
Less: accumulated depreciation	(524.3)	(498.3)
Total property, plant and equipment, net	321.5	343.9
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37.1	39.3
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	267	279.2
Equipment, Furniture, and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 541.7	$ 523.7

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 18	$ 18.7	$ 55.1	$ 56.9
Prepaid Expenses and Other Current Assets [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment assets, net held for sale	11.6		11.6		$ 8.7
Accounts payable and other accrued expenses	$ 7.9		$ 7.9		$ 5.1

Investments - Summary of Invest

Investments - Summary of Investments (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Total investments	$ 184.4	$ 193.9
Non Marketable Equity Securities
Schedule of Investments [Line Items]
Total investments	124	124
Seed Capital Investments
Schedule of Investments [Line Items]
Total investments	26.7	30.6
Marketable Equity Securities
Schedule of Investments [Line Items]
Total investments	22.1	24.3
Partnership Interests in Private Equity Funds
Schedule of Investments [Line Items]
Total investments	$ 11.6	$ 15

Investments - Schedule of Reali

Investments - Schedule of Realized and Unrealized Gains and Losses on Investments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Unrealized losses on equity securities held as of the end of the period	$ (3.4)	$ (3.4)	$ (0.2)	$ (15)
Realized gains (losses) for equity securities sold during the period	(0.1)	0	0.7	(1.1)
Total (losses) gains recognized in other (expense) income, net	$ (3.3)	$ (3.4)	$ 0.5	$ (16.1)

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		Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	$ (11.5)	$ (13.6)
Total		750.4	715.8
Money Market Funds [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[2]	713.1	674.5
Seed Capital Investments
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	26.7	30.6
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Investments measured at fair value	[3]	22.1	24.3
Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Investments [Line Items]
Deferred compensation liabilities	[1]	(11.5)	(13.6)
Total		750.4	715.8
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]	713.1	674.5
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]	26.7	30.6
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]	$ 22.1	$ 24.3
[1] Included in Other long-term liabilities on the Condensed Consolidated Balance Sheet Included in Cash and cash equivalents and 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 - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Total investments	$ 184.4	$ 193.9
Partnership Interests in Private Equity Funds
Schedule of Investments [Line Items]
Total investments	11.6	15
Investments, fair value	9.2	10.8
Equity method investments, fair value	$ 2.4	$ 4.2

Unconsolidated Affiliates - Sch

Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Carrying Value	$ 286.3	$ 266.9
Excess carrying value of investment over proportionate share of net assets	$ 118	123
Orbit Private Investments Limited Partners
Schedule of Investments [Line Items]
Ownership Percentage	9.80%
Carrying Value	$ 154.1	115.3
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	$ 66.8	85.1
Excess carrying value of investment over proportionate share of net assets	$ 32.3	34.8
Pershing Road Development Company, LLC
Schedule of Investments [Line Items]
Ownership Percentage	50%
Carrying Value	$ 9.9	10.6
Excess carrying value of investment over proportionate share of net assets	$ 56	57.9
Broadway Square Partners, LLP
Schedule of Investments [Line Items]
Ownership Percentage	50%
Carrying Value	$ 53.7	53.8
Excess carrying value of investment over proportionate share of net assets	29.7	30.3
Other Unconsolidated Affiliates
Schedule of Investments [Line Items]
Carrying Value	1.8	2.1
Excess carrying value of investment over proportionate share of net assets	$ 0	$ 0

Unconsolidated Affiliates - S_2

Unconsolidated Affiliates - Schedule of Equity in Earnings of Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	$ 27.5	$ (5.1)	$ 42.6	$ (2.7)
Orbit Private Investments L.P.
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	26.4	0	38.8	0
International Financial Data Services L.P.
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	1.1	(0.6)	3.6	0.6
Pershing Road Development Company, LLC
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	0.2	(5.2)	(0.7)	(5.1)
Broadway Square Partners, LLP
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	0	0.7	0	1.9
Other Unconsolidated Affiliates
Schedule of Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net	$ 0.2	$ 0	$ 0.9	$ (0.1)

Acquisitions - Summary of Unaud

Acquisitions - Summary of Unaudited Pro Forma Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Combinations [Abstract]
Revenues	$ 1,365.9	$ 1,323.5	$ 4,091.2	$ 4,013.3
Net income	$ 156	$ 160.1	$ 412.4	$ 425.8

Acquisitions - Schedule of Seve

Acquisitions - Schedule of Severance Expense Recognized (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	$ 25	$ 15.8
Total Cost of Revenues [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	15.5	10.4
Total Cost of Revenues [Member] | Software-enabled Services [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	14.5	8.1
Total Cost of Revenues [Member] | License, Maintenance and Related [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	1	2.3
Selling and Marketing [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	3	2.6
Research and Development [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	2.9	2
General and Administrative [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	3.6	0.8
Total Operating Expenses [Member]
Business Combination Separately Recognized Transactions [Line Items]
Total severance expense	$ 9.5	$ 5.4

Goodwill - Summary of Change in

Goodwill - Summary of Change in Carrying Value of Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 8,863
Adjustments to prior acquisitions	(0.8)
Effect of foreign currency translation	7.3
Ending balance	$ 8,854.9

Debt - Component of Debt (Detai

Debt - Component of Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Other indebtedness	$ 0.2	$ 0.8
Unamortized original issue discount and debt issuance costs	(39.3)	(50.3)
Debt	6,866	7,079.6
Less: current portion of long-term debt	127.3	55.7
Long-term debt	6,738.7	7,023.9
Secured Debt | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	4,830.1	5,129.1
Secured Debt | Senior Secured Credit Facilities Revolving Portion
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	75	0
Senior Notes
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	2,000
Senior Notes | 5.5% Senior Notes due 2027
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	$ 2,000	$ 2,000

Debt - Component of Debt (Paren

Debt - Component of Debt (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Secured Debt | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt, weighted-average interest rate of credit facility	7.31%	5%
Secured Debt | Senior Secured Credit Facilities Revolving Portion
Debt Instrument [Line Items]
Debt, weighted-average interest rate of credit facility	8.75%	8.75%
Senior Notes | 5.5% Senior Notes due 2027
Debt Instrument [Line Items]
Debt, interest rate	5.50%	5.50%
Debt, due date	2027	2027

Debt (Additional Information) (

Debt (Additional Information) (Details)	9 Months Ended
	Sep. 30, 2023
Debt Instrument [Line Items]
Debt Instrument Interest Rate Terms	the Base Rate, plus 0.75% per annum or the (b) Adjusted Term SOFR, which includes a credit spread adjustment set forth in the Credit Agreement of 0.11448%, 0.26161%, or 0.42826% for loans of interest periods of one, three, or six months, respectively, plus 1.75% per annum

Debt - Schedule of Senior Secur

Debt - Schedule of Senior Secured Credit Facilities and Senior Note (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
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%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 75
Debt Instrument, Maturity Date	Dec. 28, 2027
Line Of Credit Facility Periodic Payment Principal Percentage	0%
Senior Secured Credit Facilities | Term Loan B-3
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 1,000
Debt Instrument, Maturity Date	Apr. 16, 2025
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%
Senior Secured Credit Facilities | Term Loan B-4
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 944.3
Debt Instrument, Maturity Date	Apr. 16, 2025
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%
Senior Secured Credit Facilities | Term Loan B-5
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 1,590.9
Debt Instrument, Maturity Date	Apr. 16, 2025
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%
Senior Secured Credit Facilities | Term Loan B-6
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 516.5
Debt Instrument, Maturity Date	Mar. 22, 2029
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%
Senior Secured Credit Facilities | Term Loan B-7
Line of Credit Facility [Line Items]
Debt Instrument Carrying Amount	$ 778.5
Debt Instrument, Maturity Date	Mar. 22, 2029
Line Of Credit Facility Periodic Payment Principal Percentage	0.25%

Debt - Schedule of Carrying Amo

Debt - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Carrying Amount [Member] | Senior Secured Credit Facilities
Financial liabilities:
Credit facility	$ 4,793.7	$ 5,082.2
Carrying Amount [Member] | 5.5% Senior Notes due 2027
Financial liabilities:
Senior notes	1,997.1	1,996.6
Carrying Amount [Member] | Senior Secured Credit Facilities Revolving Portion
Financial liabilities:
Credit facility	75	0
Carrying Amount [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	0.2	0.8
Fair Value [Member] | Senior Secured Credit Facilities
Financial liabilities:
Credit facility	4,842.4	5,069
Fair Value [Member] | 5.5% Senior Notes due 2027
Financial liabilities:
Credit facility	1,891.4	1,880.9
Fair Value [Member] | Senior Secured Credit Facilities Revolving Portion
Financial liabilities:
Credit facility	74.6	0
Fair Value [Member] | Other Indebtedness [Member]
Financial liabilities:
Credit facility	$ 0.2	$ 0.8

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 31, 2023	Jul. 31, 2022
Class of Stock [Line Items]
Payments for repurchase of common stock	$ 97.8		$ 214.5	$ 344.4	$ 385.4
Quarterly cash dividend paid		$ 0.2		$ 0.24	$ 0.2
Dividends paid on common stock				$ 160.9	$ 153.4
Stock Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of common stock , shares	1,700,000		3,700,000	6,000,000	6,000,000
Payments for repurchase of common stock	$ 97.8		$ 214.5	$ 344.4	$ 385.4
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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			$ 6,044.2
Net current period other comprehensive loss	$ (113)	$ (245.3)	(4.8)	$ (508.3)
Ending balance	6,143.9		6,143.9
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(549)
Net current period other comprehensive loss			(4.8)
Ending balance	(553.8)		(553.8)
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(550.1)
Net current period other comprehensive loss			(4.8)
Ending balance	(554.9)		(554.9)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(1.1)
Net current period other comprehensive loss			0
Ending balance	$ (1.1)		$ (1.1)

Stockholders' Equity - Schedu_2

Stockholders' Equity - Schedule of Adjustments to Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on interest rate swaps	$ (117.2)	$ (259.4)	$ 3.7	$ (534.2)
Unrealized net gains (losses) on defined benefit pension plan	(117.2)	(259.4)	3.7	(534.2)
OCI, before Reclassifications, before Tax, Attributable to Parent	(117.2)	(259.4)	3.7	(534.2)
Other comprehensive (loss) income before reclassifications, Tax Effect	4.2	14.1	(1.1)	25.9
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on interest rate swaps	0	6	0	8.8
Reclassification of gains into net earnings on interest rate swaps	0	(1.5)	0	(2.3)
Net change in cash flow hedges	0	4.5	0	6.5
Unrealized net gains (losses) on defined benefit pension plan	0	6	0	8.8
OCI, before Reclassifications, before Tax, Attributable to Parent	0	6	0	8.8
Other comprehensive (loss) income before reclassifications, Tax Effect	0	(1.2)	0	(1.7)
Other comprehensive (loss) income, Tax Effect	0	(1.2)	0	(1.7)
Defined Benefit Obligation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on interest rate swaps	0	0	0.1	0.3
Unrealized net gains (losses) on defined benefit pension plan	0	0	0.1	0.3
Reclassification of losses into net earnings on defined benefit pension, Tax Effect	0.1	(0.8)	0.1	(0.8)
OCI, before Reclassifications, before Tax, Attributable to Parent	0	0	0.1	0.3
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on interest rate swaps	(117.2)	(263.9)	(3.6)	(540.4)
Unrealized net gains (losses) on defined benefit pension plan	(117.2)	(263.9)	(3.6)	(540.4)
OCI, before Reclassifications, before Tax, Attributable to Parent	(117.2)	(263.9)	(3.6)	(540.4)
Other comprehensive (loss) income before reclassifications, Tax Effect	$ (4.2)	$ 15.3	$ (1.2)	$ 28.4

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	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Assets:
Cash and cash equivalents	$ 447.6	$ 440.1	$ 401.9
DomaniRx LLC [Member]
Assets:
Cash and cash equivalents	106.1		151.6
Intangible assets	186.7		151.6
Other assets	2.7		0
Liabilities:
Other liabilities	$ 5.3		$ 17.5

Revenues - Additional Informati

Revenues - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Deferred Revenue Arrangement [Line Items]
Deferred revenue presented net within contract assets arising from contract			$ 59.7		$ 68
Deferred revenue recognized	$ 94	$ 50.5	397.6	$ 231.8
Revenue expected to be recognized from remaining performance obligations	940.9		940.9
Revenue expected to be recognized from remaining performance obligations in next twelve months	$ 461.2		$ 461.2
Minimum [Member] | Software-enabled Services
Deferred Revenue Arrangement [Line Items]
Revenue recognition period			1 year
Maximum [Member] | Software-enabled Services
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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,365.9	$ 1,321	$ 4,091.2	$ 3,944.7
United States
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	941.2	927.1	2,838.9	2,787.5
United Kingdom
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	160.1	138.2	473.4	433.8
Europe (excluding United Kingdom), Middle East and Africa
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	116.2	105.2	337.1	292.8
Asia-Pacific and Japan
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	67.6	62.5	204.2	193.3
Canada
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	55.3	64.9	164.5	169.5
Americas, excluding United States and Canada
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 25.5	$ 23.1	$ 73.1	$ 67.8

Revenues - Disaggregation of _2

Revenues - Disaggregation of Revenues by Source (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,365.9	$ 1,321	$ 4,091.2	$ 3,944.7
Software-enabled Services
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,122.1	1,049.8	3,342.8	3,205.7
Maintenance and Term Licenses
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	211.6	237.4	643.5	639.5
Professional Services
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	26.8	27.7	83.1	81.4
Perpetual Licenses
Disaggregation Of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 5.4	$ 6.1	$ 21.8	$ 18.1

Stock Based Compensation - Sche

Stock Based Compensation - Schedule of Stock-Based Compensation Expense Recognized (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 42.1	$ 7.4	$ 117.5	$ 93.3
Software-enabled Services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	14.5	2.3	42.9	34.6
License, Maintenance and Other Related [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	1.8	1.3	5.1	4
Total Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	16.3	3.6	48	38.6
Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	7.3	1.5	21.8	17.2
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	5.8	2	15.8	12.3
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	12.7	0.3	31.9	25.2
Total Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 25.8	$ 3.8	$ 69.5	$ 54.7

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)	9 Months Ended
	Sep. 30, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	43,600,000
Granted	600,000
Cancelled/forfeited	(1,600,000)
Exercised	(2,500,000)
Vested	0
Number of Shares, Outstanding Closing	40,100,000
Number of Shares, Outstanding Opening	3,400,000
Granted	1,400,000
Cancelled/forfeited	(500,000)
Vested	(100,000)
Exercised	0
Number of Shares, Outstanding Closing	4,200,000

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) $ in Millions	3 Months Ended
	Sep. 30, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share Based Compensation Expense Related To Performance Based Options	$ 25.7

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Effective tax rate	24.60%	25%	28.80%	26.90%

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to SS&C common stockholders	$ 156	$ 160	$ 412.7	$ 442.7
Shares attributable to SS&C:
Weighted-average common shares outstanding – used in calculation of basic EPS	247,500,000	253,900,000	248,800,000	254,800,000
Weighted-average common stock equivalents – stock options and restricted shares	6,400,000	7,000,000	6,500,000	8,900,000
Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS	253,900,000	260,900,000	255,300,000	263,700,000
Earnings per share attributable to SS&C common stockholders - Basic	$ 0.63	$ 0.63	$ 1.66	$ 1.74
Earnings per share attributable to SS&C common stockholders - Diluted	$ 0.61	$ 0.61	$ 1.62	$ 1.68

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock Options, SARs, RSUs, and RSAs [Member]
Earnings Per Share [Line Items]
Anti-dilutive shares not included in computation of diluted EPS	23,200,000	22,000,000	23,500,000	22,000,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - DST Systems Inc [Member] - USD ($)				9 Months Ended
	Aug. 03, 2023	Jul. 14, 2023	Jul. 10, 2020	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Litigation settlement, expense	$ 55,100,000
Accrued liability and expense				$ 51,000,000	$ 55,100,000
Scheduled payment				4,100,000
Other (expense) income [Member]
Loss Contingencies [Line Items]
Litigation settlement, expense				$ 3,600,000
Accrued liability and expense						$ 8,100,000	$ 43,400,000
Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, expense		$ 124,625,000
Settled Litigation [Member] | Putative Claims [Member]
Loss Contingencies [Line Items]
Litigation settlement, expense			$ 27,000,000

Subsequent Events (Additional I

Subsequent Events (Additional Information) (Details) - Subsequent Event [Member] $ in Millions	Oct. 01, 2023 USD ($)
Subsequent Event [Line Items]
Acquisition of business from Iress Limited	$ 32.5
Subsequent events date	Oct. 01, 2023
Description of event	we acquired the managed funds administration business from Iress Limited, OneVue Fund Services Pty Ltd. (“OneVue”)