Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2023
Accounting Policies [Abstract]
Nature of business	Nature of business APi Group Corporation (the “Company” or “APG”) is a global, market-leading business services provider of safety and specialty services in over 500 locations worldwide.
Principles of consolidation	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 (“U.S. GAAP”) for complete financial statements. The condensed consolidated balance sheets as of December 31, 2022, were derived from audited financial statements for the year then ended but do not include all of the information and footnotes required by U.S. GAAP with respect to annual financial statements. In the opinion of management, the Interim Statements include all adjustments (including normal recurring accruals) 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, 2022. 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	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	Investments The Company holds investments in joint ventures, which are accounted for under the equity method of accounting as the Company does not exercise control over the joint ventures. The Company’s share of earnings from the joint ventures was $2 and $1 during the three months ended June 30, 2023 and 2022, respectively, and $4 and $1 during the six months ended June 30, 2023 and 2022, respectively. The earnings are recorded within investment income and other, net in the condensed consolidated statements of operations. The investment balances were $6 and $4 as of June 30, 2023 and December 31, 2022, respectively, and are recorded within other assets in the condensed consolidated balance sheets.

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 (“U.S. GAAP”) for complete financial statements. The condensed consolidated balance sheets as of December 31, 2022, were derived from audited financial statements for the year then ended but do not include all of the information and footnotes required by U.S. GAAP with respect to annual financial statements. In the opinion of management, the Interim Statements include all adjustments (including normal recurring accruals) 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, 2022. Results for interim periods are not necessarily indicative of the results to be expected for a full fiscal year or for any future period.

Investments

The Company holds investments in joint ventures, which are accounted for under the equity method of accounting as the Company does not exercise control over the joint ventures. The Company’s share of earnings from the joint ventures was $2 and $1 during the three months ended June 30, 2023 and 2022, respectively, and $4 and $1 during the six months ended June 30, 2023 and 2022, respectively. The earnings are recorded within investment income and other, net in the condensed consolidated statements of operations. The investment balances were $6 and $4 as of June 30, 2023 and December 31, 2022, respectively, and are recorded within other assets in the condensed consolidated balance sheets.