Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 567.1	$ 432.2
Funds receivable and funds held on behalf of clients	3,162.2	2,615.6
Accounts receivable, net of allowance for credit losses of $31.6 and $25.1, respectively (Note 3)	902.0	799.4
Contract asset	47.6	36.1
Prepaid expenses and other current assets	179.8	165.8
Restricted cash and cash equivalents	3.7	2.4
Total current assets	4,862.4	4,051.5
Property, plant and equipment, net (Note 4)	299.6	315.3
Operating lease right-of-use assets (Note 5)	190.6	221.4
Investments (Note 6)	177.4	184.7
Unconsolidated affiliates (Note 7)	328.4	345.2
Contract asset	110.2	99.7
Goodwill (Note 9)	9,218.1	8,969.5
Intangible and other assets, net of accumulated amortization of $4,646.6 and $4,063.4, respectively (Note 9)	3,858.0	3,915.2
Total assets	19,044.7	18,102.5
Current liabilities:
Current portion of long-term debt (Note 10)	20.0	51.5
Client funds obligations	3,162.2	2,615.6
Accounts payable	70.2	80.3
Income taxes payable	23.0	22.3
Accrued employee compensation and benefits	311.5	270.2
Interest payable	31.6	29.4
Other accrued expenses	249.7	232.3
Deferred revenues	486.1	470.3
Total current liabilities	4,354.3	3,771.9
Long-term debt, net of current portion (Note 10)	6,989.6	6,668.5
Operating lease liabilities (Note 5)	175.1	199.1
Other long-term liabilities	191.1	248.7
Deferred income taxes	725.5	816.6
Total liabilities	12,435.6	11,704.8
Commitments and contingencies (Note 18)
Stockholders’ equity (Note 11):
Preferred stock, $0.01 par value per share, 5.0 million shares authorized; no shares issued	0.0	0.0
Additional paid-in capital	5,901.6	5,371.0
Accumulated other comprehensive loss	(541.2)	(426.3)
Retained earnings	3,641.9	3,126.3
Cost of common stock in treasury, 39.9 and 29.3 million shares, respectively	(2,470.2)	(1,734.2)
Total SS&C stockholders' equity	6,534.9	6,339.6
Noncontrolling interest (Note 12)	74.2	58.1
Total equity	6,609.1	6,397.7
Total liabilities and equity	19,044.7	18,102.5
Class A Non-Voting Common Stock [Member]
Stockholders’ equity (Note 11):
Common stock	0.0	0.0
Common Stock [Member]
Stockholders’ equity (Note 11):
Common stock	$ 2.8	$ 2.8