Basis of Presentation and Principles of Consolidation	9 Months Ended
Sep. 30, 2021
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, 2020, filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2021 (the “2020 Form 10-K”). The inputs into our judgments and estimates consider the economic implications of COVID-19 on our critical and significant accounting estimates. 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, 2021, the results of our operations for the three and nine months ended September 30, 2021 and 2020, and our cash flows for the nine months ended September 30, 2021 and 2020. 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, 2020, which were included in the 2020 Form 10-K. The December 31, 2020 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, 2021 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 December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes (Topic 740). ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The standard also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. Certain amendments in this update must be applied on a prospective basis, certain amendments must be applied on a retrospective basis and certain amendments must be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the effective date. We adopted ASU 2019-12 effective January 1, 2021. The adoption of this standard did not have a material impact on our financial position, results of operations or cash flows. Recent Accounting Pronouncement Not Yet Effective 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 Update 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. An entity may elect to apply the amendments prospectively through December 31, 2022. A substantial portion of our indebtedness bears interest at variable interest rates, primarily based on USD-LIBOR. We continue to monitor the impact the discontinuance of LIBOR or another reference rate will have on our contracts, hedging relationships and other transactions. We are currently assessing the impact of this standard on our financial condition and results of operations.

Basis of Presentation and Principles of Consolidation

9 Months Ended

Sep. 30, 2021

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, 2020, filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2021 (the “2020 Form 10-K”). The inputs into our judgments and estimates consider the economic implications of COVID-19 on our critical and significant accounting estimates. 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, 2021, the results of our operations for the three and nine months ended September 30, 2021 and 2020, and our cash flows for the nine months ended September 30, 2021 and 2020. 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, 2020, which were included in the 2020 Form 10-K. The December 31, 2020 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, 2021 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 December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes (Topic 740). ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The standard also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. Certain amendments in this update must be applied on a prospective basis, certain amendments must be applied on a retrospective basis and certain amendments must be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the effective date. We adopted ASU 2019-12 effective January 1, 2021. The adoption of this standard did not have a material impact on our financial position, results of operations or cash flows.

Recent Accounting Pronouncement Not Yet Effective

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 Update 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. An entity may elect to apply the amendments prospectively through December 31, 2022. A substantial portion of our indebtedness bears interest at variable interest rates, primarily based on USD-LIBOR. We continue to monitor the impact the discontinuance of LIBOR or another reference rate will have on our contracts, hedging relationships and other transactions. We are currently assessing the impact of this standard on our financial condition and results of operations.