BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
Sep. 30, 2025
Accounting Policies [Abstract]
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Nature of business APi Group Corporation (the “Company” or “APG”) is a global, market-leading business services provider of fire and life safety, security, elevator and escalator, and specialty services with a substantial recurring revenue base and over 500 locations worldwide. Principles of consolidation The accompanying interim unaudited condensed consolidated financial statements (the “Interim Statements”) include the accounts of the Company and of its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. These Interim Statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and do not include all of the information and footnotes required by generally accepted accounting principles in the United States of America (“GAAP”) for complete financial statements. The condensed consolidated balance sheets as of December 31, 2024 were derived from audited financial statements for the year then ended but do not include all of the information and footnotes required by GAAP with respect to annual financial statements. In the opinion of management, the Interim Statements include all adjustments necessary for a fair presentation of the Company’s consolidated financial position, results of operations, and cash flows for the dates and periods presented. It is recommended that these Interim Statements be read in conjunction with the Company’s audited annual consolidated financial statements and accompanying footnotes thereto for the year ended December 31, 2024. Results for interim periods are not necessarily indicative of the results to be expected for a full fiscal year or for any future period. Cash, cash equivalents, and restricted cash The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Restricted cash is reported as other current assets in the condensed consolidated balance sheets. Restricted cash reflects collateral against certain bank guarantees. Investments The Company holds investments in joint ventures, the majority of which are accounted for under the equity method of accounting as the Company does not exercise control over the joint ventures. The Company exercises control over one joint venture that is consolidated into the Company's financial statements and the results for that joint venture for the three and nine months ended September 30, 2025 and 2024 were immaterial. The Company’s share of earnings from the non-consolidated joint ventures was $2 during the three months ended September 30, 2025 and 2024, and $10 and $6 during the nine months ended September 30, 2025 and 2024, respectively. The earnings are recorded within investment (income) expense and other, net in the condensed consolidated statements of operations. The investment balances were $2 and $4 as of September 30, 2025 and December 31, 2024, respectively, and are recorded within other assets in the condensed consolidated balance sheets. Stock Split During the second quarter of 2025, the Company executed a three-for-two stock split by issuing a stock dividend of one-half of one share of common stock for each share of common stock. The Company retained the current par value of $0.0001 per share for all common shares. All references to the number of shares outstanding, issued shares, and per share amounts of the Company’s common shares have been restated to reflect the effect of the stock split for all historical periods presented in the Company’s accompanying condensed consolidated financial statements and footnotes thereto.

The accompanying interim unaudited condensed consolidated financial statements (the “Interim Statements”) include the accounts of the Company and of its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. These Interim Statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and do not include all of the information and footnotes required by generally accepted accounting principles in the United States of America (“GAAP”) for complete financial statements. The condensed consolidated balance sheets as of December 31, 2024 were derived from audited financial statements for the year then ended but do not include all of the information and footnotes required by GAAP with respect to annual financial statements. In the opinion of management, the Interim Statements include all adjustments necessary for a fair presentation of the Company’s consolidated financial position, results of operations, and cash flows for the dates and periods presented. It is recommended that these Interim Statements be read in conjunction with the Company’s audited annual consolidated financial statements and accompanying footnotes thereto for the year ended December 31, 2024. Results for interim periods are not necessarily indicative of the results to be expected for a full fiscal year or for any future period.

The Company considers all highly liquid investments purchased with an original maturity date of three months or less to be cash equivalents. Restricted cash is reported as other current assets in the condensed consolidated balance sheets. Restricted cash reflects collateral against certain bank guarantees.

The Company holds investments in joint ventures, the majority of which are accounted for under the equity method of accounting as the Company does not exercise control over the joint ventures. The Company exercises control over one joint venture that is consolidated into the Company's financial statements and the results for that joint venture for the three and nine months ended September 30, 2025 and 2024 were immaterial. The Company’s share of earnings from the non-consolidated joint ventures was $2 during the three months ended September 30, 2025 and 2024, and $10 and $6 during the nine months ended September 30, 2025 and 2024, respectively. The earnings are recorded within investment (income) expense and other, net in the condensed consolidated statements of operations. The investment balances were $2 and $4 as of September 30, 2025 and December 31, 2024, respectively, and are recorded within other assets in the condensed consolidated balance sheets.

During the second quarter of 2025, the Company executed a three-for-two stock split by issuing a stock dividend of one-half of one share of common stock for each share of common stock. The Company retained the current par value of $0.0001 per share for all common shares. All references to the number of shares outstanding, issued shares, and per share amounts of the Company’s common shares have been restated to reflect the effect of the stock split for all historical periods presented in the Company’s accompanying condensed consolidated financial statements and footnotes thereto.