Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
Predecessor and Successor Reporting	Predecessor and Successor Reporting — On June 3, 2019, the Company consummated the acquisition of all outstanding and issued equity interests of Rack Holdings, pursuant to the Stock Purchase Agreement, and now owns 100% of Rack Holdings Inc. and its wholly owned subsidiaries. The Ranpak Business Combination is accounted for under the scope of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) Topic 805, Business Combinations (“ASC 805”), as One Madison was deemed to be the accounting acquirer while Rack Holdings was deemed the "Predecessor." Accordingly, the business combination is accounted for using the acquisition method which requires the Company to record the fair value of assets acquired and liabilities assumed from Rack Holdings (See Note 7, "Acquisition"). The financial statements separate the Company’s presentation into two distinct periods. The period before the Closing of the Ranpak Business Combination (labeled "Predecessor" period) depicts the financial statements of Rack Holdings, and the period after the Closing (labeled "Successor" period) depicts the financial statements of the Company, including the consolidation of One Madison with Rack Holdings and application of acquisition method of accounting. As a result of the application of the acquisition method of accounting as of the Closing, the financial statements for the Predecessor periods and for the Successor periods are presented on a different basis of accounting and are, therefore, not comparable.
Principles of Consolidation	Principles of Consolidation — The unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries prepared in conformity with U.S. GAAP. All intercompany balances and transactions have been eliminated in consolidation and certain immaterial prior year amounts have been reclassified consistent with current year presentation. All amounts are in millions, except share and per share amounts and are approximate due to rounding.
Use of Estimates	Use of Estimates — The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates and such differences could be material.
Foreign Currency	Foreign Currency — The nature of business activities involves the management of various financial and market risks, including those related to changes in foreign currency exchange rates. The functional currency of our operating subsidiaries outside the U.S. is the applicable local currency. For those operations, assets and liabilities are translated into U.S. dollars at period-end exchange rates and revenues and expenses are translated into U.S. dollars using average monthly exchange rates.
New Accounting Standards Issued and Not Yet Adopted	Recently Adopted Accounting Standards — In August 2018, the FASB issued Accounting Standards Update ("ASU") No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement ("ASU 2018-13"). ASU 2018-13 modifies the disclosure requirements on fair value measurements. We adopted ASU 2018-13 on January 1, 2020. The adoption of ASU 2018-13 did not have an impact on our fair value disclosures. Recently Issued Accounting Standards — In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASC 842"). The amendments in this ASU require an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. ASC 842 is effective for fiscal years beginning after December 15, 2019, and interim periods beginning after December 15, 2020 with early adoption permitted. On October 16, 2019, the FASB delayed the implementation of ASC 842 for private companies until fiscal years beginning after December 15, 2020. Given our status as an EGC, we will adopt ASC 842 in accordance with the private company guidance. We have formed an implementation team, including personnel from accounting, tax, legal, information technology, and operations departments, to gather information regarding existing leases and the various processes that currently exist to procure, track, and account for leases globally. We continue to assess the potential impact of the new standard on our financial statements and disclosures. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"), which amends the FASB's guidance on the impairment of financial instruments. ASU 2016-13 adds to U.S. GAAP an impairment model (known as the "current expected credit loss model") that is based on expected losses rather than incurred losses. ASU 2016-13 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those fiscal years. On October 16, 2019, the FASB delayed the implementation of ASU 2016-13 for private companies until fiscal years beginning January 1, 2023. Given our status as an EGC, we will adopt ASU 2016-13 in accordance with the private company guidance. We are currently evaluating the impact that this new guidance will have on our financial position, results of operations, cash flows and related disclosures. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting ("ASU 2020-04"). The amendments in ASU 2020-04 provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. These expedients and exceptions do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, for which an entity has elected certain optional expedients and that are retained through the end of the hedging relationship. ASU 2020-04 is effective for all entities as of March 12, 2020 (the date of the issuance of ASU 2020-04) through December 31, 2022. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. We are evaluating the impact of ASU 2020-04 on our financial statements and disclosures.

Basis of Presentation and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

Predecessor and Successor Reporting — On June 3, 2019, the Company consummated the acquisition of all outstanding and issued equity interests of Rack Holdings, pursuant to the Stock Purchase Agreement, and now owns 100% of Rack Holdings Inc. and its wholly owned subsidiaries. The Ranpak Business Combination is accounted for under the scope of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) Topic 805, Business Combinations (“ASC 805”), as One Madison was deemed to be the accounting acquirer while Rack Holdings was deemed the "Predecessor." Accordingly, the business combination is accounted for using the acquisition method which requires the Company to record the fair value of assets acquired and liabilities assumed from Rack Holdings (See Note 7, "Acquisition").

The financial statements separate the Company’s presentation into two distinct periods. The period before the Closing of the Ranpak Business Combination (labeled "Predecessor" period) depicts the financial statements of Rack Holdings, and the period after the Closing (labeled "Successor" period) depicts the financial statements of the Company, including the consolidation of One Madison with Rack Holdings and application of acquisition method of accounting. As a result of the application of the acquisition method of accounting as of the Closing, the financial statements for the Predecessor periods and for the Successor periods are presented on a different basis of accounting and are, therefore, not comparable.

Principles of Consolidation

Principles of Consolidation — The unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries prepared in conformity with U.S. GAAP. All intercompany balances and transactions have been eliminated in consolidation and certain immaterial prior year amounts have been reclassified consistent with current year presentation. All amounts are in millions, except share and per share amounts and are approximate due to rounding.

Use of Estimates

Use of Estimates — The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates and such differences could be material.

Foreign Currency

Foreign Currency — The nature of business activities involves the management of various financial and market risks, including those related to changes in foreign currency exchange rates. The functional currency of our operating subsidiaries outside the U.S. is the applicable local currency. For those operations, assets and liabilities are translated into U.S. dollars at period-end exchange rates and revenues and expenses are translated into U.S. dollars using average monthly exchange rates.

New Accounting Standards Issued and Not Yet Adopted

Recently Adopted Accounting Standards — In August 2018, the FASB issued Accounting Standards Update ("ASU") No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement ("ASU 2018-13"). ASU 2018-13 modifies the disclosure requirements on fair value measurements. We adopted ASU 2018-13 on January 1, 2020. The adoption of ASU 2018-13 did not have an impact on our fair value disclosures.

Recently Issued Accounting Standards — In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASC 842"). The amendments in this ASU require an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. ASC 842 is effective for fiscal years beginning after December 15, 2019, and interim periods beginning after December 15, 2020 with early adoption permitted. On October 16, 2019, the FASB delayed the implementation of ASC 842 for private companies until fiscal years beginning after December 15, 2020. Given our status as an EGC, we will adopt ASC 842 in accordance with the private company guidance. We have formed an implementation team, including personnel from accounting, tax, legal, information technology, and operations departments, to gather information regarding existing leases and the various processes that currently exist to procure, track, and account for leases globally. We continue to assess the potential impact of the new standard on our financial statements and disclosures.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"), which amends the FASB's guidance on the impairment of financial instruments. ASU 2016-13 adds to U.S. GAAP an impairment model (known as the "current expected credit loss model") that is based on expected losses rather than incurred losses. ASU 2016-13 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those fiscal years. On October 16, 2019, the FASB delayed the implementation of ASU 2016-13 for private companies until fiscal years beginning January 1, 2023. Given our status as an EGC, we will adopt ASU 2016-13 in accordance with the private company guidance. We are currently evaluating the impact that this new guidance will have on our financial position, results of operations, cash flows and related disclosures.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting ("ASU 2020-04"). The amendments in ASU 2020-04 provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. These expedients and exceptions do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, for which an entity has elected certain optional expedients and that are retained through the end of the hedging relationship. ASU 2020-04 is effective for all entities as of March 12, 2020 (the date of the issuance of ASU 2020-04) through December 31, 2022. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. We are evaluating the impact of ASU 2020-04 on our financial statements and disclosures.