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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Debt (Additional Information) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	May 09, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Debt Instrument Interest Rate Terms				the Base Rate (as defined in the Amendment), plus 1.00% per annum, or the Term SOFR Rate (as defined in the Amendment), plus 2.00% per annum.
Description of Senior Secured Credit Facilities and Senior Notes				The 6.5% Senior Notes are senior unsecured obligations and rank equal in right of payment with all of our existing and future senior indebtedness. The 6.5% Senior Notes are fully and unconditionally guaranteed, jointly and severally, by SS&C Holdings and all of its existing domestic restricted subsidiaries (other than SS&C Technologies) that guarantee our existing senior secured credit facilities and future domestic restricted subsidiaries that guarantee our existing senior secured credit facilities and certain other indebtedness. Interest on the 6.5% Senior Notes is payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2024.
Loss on extinguishment of debt		$ (27.7)	$ 0.0	$ (28.8)	$ (0.6)
6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.50%		6.50%
Term Loan B-8
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 3,935.0
Incremental Joinder [Member]
Debt Instrument [Line Items]
Capitalized financing costs		$ 34.5		$ 34.5
Loss on extinguishment of debt
Debt Instrument [Line Items]
Loss on extinguishment of debt		27.7
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Senior Notes [Member] \| 6.5% senior notes due 2032
Debt Instrument [Line Items]
Debt Instrument Carrying Amount		$ 750.0		$ 750.0		$ 0.0
Debt Instrument, Face Amount	$ 750.0
Debt Instrument, Interest Rate, Stated Percentage	6.50%	6.50%		6.50%		6.50%
Debt Conversion, Original Debt, Due Date, Year	2032			2032		2032