Debt - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended
	Dec. 31, 2014 Tranches	Dec. 31, 2013	Dec. 31, 2012	Mar. 14, 2012	Jun. 30, 2013	Feb. 28, 2014	Nov. 30, 2014
Debt Instrument [Line Items]
Capitalized financing costs amortized to interest expense	$ 4,400,000	$ 4,400,000	$ 2,600,000
Company amortized to interest expense	1,400,000	1,400,000	800,000
Loss on extinguishment of debt			4,355,000
Number of tranche of term loan	4
Debt instrument, interest rate terms	The term A loans and the revolving credit facility initially bore interest at either LIBOR plus 2.75% or at the base rate plus 1.75%, and then will be subject to a step-down based on SS&C's consolidated net senior secured leverage ratio and would be equal to 2.50% in the case of the LIBOR margin, and 1.50% in the case of the base rate margin. The term B loans initially bore interest at either LIBOR plus 4.00% or at base rate plus 3.00%, with LIBOR subject to a 1.00% floor.
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument term available for borrowings				5 years 6 months
Maximum borrowing capacity				100,000,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				25,000,000
Swingline Loan Sub-Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				20,000,000
DSTGS [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding							75,000,000
LIBOR Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%				2.50%
Debt instrument, interest rate, basis for effective rate	2.50% in the case of the LIBOR margin
Base Rate Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%				1.50%
Debt instrument, interest rate, basis for effective rate	1.50% in the case of the base rate margin
Prior Senior Credit Facility [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt			4,355,000
Line of credit facility, amount outstanding			260,000,000
Term A-1 Loans [Member]
Debt Instrument [Line Items]
Credit agreement of term loan borrowings				0
Debt instrument term available for borrowings				5 years 6 months
Term A-2 Loans [Member]
Debt Instrument [Line Items]
Credit agreement of term loan borrowings				325,000,000
Debt instrument term available for borrowings				5 years 6 months
Debt instrument, interest rate terms	The applicable interest rates were reduced to either LIBOR plus 2.0% or the base rate plus 1.0%.
Term loan maturity date	Dec. 08, 2017
Term A-2 Loans [Member] | LIBOR Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						2.00%
Term A-2 Loans [Member] | Base Rate Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.00%
Term B-1 Loans [Member]
Debt Instrument [Line Items]
Credit agreement of term loan borrowings				725,000,000
Debt instrument term available for borrowings				7 years
Term B-2 Loans [Member]
Debt Instrument [Line Items]
Credit agreement of term loan borrowings				75,000,000
Debt instrument term available for borrowings				7 years
Bridge Loan Facility [Member]
Debt Instrument [Line Items]
Debt instrument term available for borrowings				364 days
Maximum borrowing capacity				142,000,000
Line of credit facility, amount outstanding				$ 31,600,000
Term A Loans [Member] | LIBOR Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.75%
Term A Loans [Member] | Base Rate Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Term B Loans [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate terms	The applicable interest rates were reduced to either LIBOR plus 2.75% or the base rate plus 1.75%, and the LIBOR floor was reduced from 1.00% to 0.75%, subject to a step-down at any time that the consolidated net senior secured leverage ratio is less than 2.75 times, to 2.50% in the case of the LIBOR margin, and 1.50% in the case of the base rate margin.
Term loan maturity date	Jun. 08, 2019
Minimum senior secured leverage ratio required					2.75
Term B Loans [Member] | LIBOR Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	4.00%				2.75%
Debt instrument, floor rate	1.00%				0.75%
Debt instrument, previous floor rate					1.00%
Term B Loans [Member] | Base Rate Plus [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%				1.75%