Business Description and Basis of Presentation	3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Description and Basis of Presentation	Business Description and Basis of Presentation Global Business Travel Group, Inc. (“GBTG”), and its consolidated subsidiaries (GBTG together with its consolidated subsidiaries, the "Company"), operating as American Express Global Business Travel ("Amex GBT"), is a leading software and services company in travel, expense and meetings & events. The Company has built a marketplace in travel with comprehensive and competitive content. The Company offers a choice of software solutions for customers to access the Amex GBT marketplace, backed up by global teams for 24/7 support in over 140 countries. GBTG is a Delaware corporation and tax resident in the United States of America (“U.S.”). Pending Merger of CWT On March 24, 2024, GBTG entered into an Agreement and Plan of Merger (as subsequently amended from time to time, the “Merger Agreement”) with CWT Holdings, LLC, a Delaware limited liability company (“CWT”), pursuant to which, among other things, GBTG will acquire CWT (the "Merger"). Based upon the latest amendment on March 21, 2025 to the Merger Agreement, the transaction values CWT at approximately $540 million on a cash-free and debt-free basis, subject to certain assumptions and purchase price adjustments. At the closing of the transaction, GBTG expects to fund the Merger with a combination of cash and an aggregate of approximately 50 million shares of its Class A common stock, par value $0.0001 per share ("Class A common stock"), at a price of $7.50 per share as purchase consideration. The closing of the transaction is subject to the satisfaction of customary closing conditions, including the receipt of certain regulatory approvals. In January 2025, the U.S. Department of Justice, filed suit in the U.S. District Court for the Southern District of New York against the Company and CWT, seeking a permanent injunction to prevent the Merger. The trial is scheduled to begin September 8, 2025. On March 6, 2025, the Company received approval from the U.K. Competition and Markets Authority to complete the Merger. Basis of Presentation The Company’s consolidated financial statements include the accounts of GBTG, its wholly-owned subsidiaries and entities controlled by GBTG. There are no entities that have been consolidated due to control through operating agreements, financing agreements or as the primary beneficiary of a variable interest entity. The Company reports the non-controlling ownership interests in subsidiaries that are held by third-party owners as equity attributable to non-controlling interests in subsidiaries on the consolidated balance sheets. The portion of income or loss attributable to third-party owners for the reporting period is reported as net income (loss) attributable to non-controlling interests in subsidiaries on the consolidated statements of operations. The Company has eliminated intercompany transactions and balances in its consolidated financial statements. The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial reporting. As such, certain notes or other information that are normally required by U.S. GAAP have been omitted if they substantially duplicate the disclosures contained in the Company’s annual audited consolidated financial statements. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2024, included in the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission, United States (the “SEC”) on March 7, 2025 (the “Annual Report on Form 10-K”). The Company has included all normal recurring items and adjustments necessary for a fair presentation of the results of the interim period. The Company’s interim unaudited consolidated financial statements are not necessarily indicative of results that may be expected for any other interim period or for the full year. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and related disclosures in the consolidated financial statements and accompanying notes. Estimates are used for, but not limited to, supplier revenue, allowance for credit losses, depreciable lives of property and equipment, acquisition purchase price allocations including valuation of acquired intangible assets and goodwill and contingent consideration, valuation of operating lease right-of-use (“ROU”) assets, impairment of goodwill, other intangible assets, long-lived assets, capitalized client incentives and investments in equity method investments, valuation allowances on deferred income taxes, valuation of pensions, interest rate swaps, cross currency interest rate swaps, earnout shares and contingent liabilities. Actual results could differ materially from those estimates.

Global Business Travel Group, Inc. (“GBTG”), and its consolidated subsidiaries (GBTG together with its consolidated subsidiaries, the "Company"), operating as American Express Global Business Travel ("Amex GBT"), is a leading software and services company in travel, expense and meetings & events. The Company has built a marketplace in travel with comprehensive and competitive content. The Company offers a choice of software solutions for customers to access the Amex GBT marketplace, backed up by global teams for 24/7 support in over 140 countries.

On March 24, 2024, GBTG entered into an Agreement and Plan of Merger (as subsequently amended from time to time, the “Merger Agreement”) with CWT Holdings, LLC, a Delaware limited liability company (“CWT”), pursuant to which, among other things, GBTG will acquire CWT (the "Merger").

Based upon the latest amendment on March 21, 2025 to the Merger Agreement, the transaction values CWT at approximately $540 million on a cash-free and debt-free basis, subject to certain assumptions and purchase price adjustments. At the closing of the transaction, GBTG expects to fund the Merger with a combination of cash and an aggregate of approximately 50 million shares of its Class A common stock, par value $0.0001 per share ("Class A common stock"), at a price of $7.50 per share as purchase consideration.

The closing of the transaction is subject to the satisfaction of customary closing conditions, including the receipt of certain regulatory approvals. In January 2025, the U.S. Department of Justice, filed suit in the U.S. District Court for the Southern District of New York against the Company and CWT, seeking a permanent injunction to prevent the Merger. The trial is scheduled to begin September 8, 2025. On March 6, 2025, the Company received approval from the U.K. Competition and Markets Authority to complete the Merger.

The Company’s consolidated financial statements include the accounts of GBTG, its wholly-owned subsidiaries and entities controlled by GBTG. There are no entities that have been consolidated due to control through operating agreements, financing agreements or as the primary beneficiary of a variable interest entity. The Company reports the non-controlling ownership interests in subsidiaries that are held by third-party owners as equity attributable to non-controlling interests in subsidiaries on the consolidated balance sheets. The portion of income or loss attributable to third-party owners for the reporting period is reported as net income (loss) attributable to non-controlling interests in subsidiaries on the consolidated statements of operations. The Company has eliminated intercompany transactions and balances in its consolidated financial statements.

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial reporting. As such, certain notes or other information that are normally required by U.S. GAAP have been omitted if they substantially duplicate the disclosures contained in the Company’s annual audited consolidated financial statements. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2024, included in the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission, United States (the “SEC”) on March 7, 2025 (the “Annual Report on Form 10-K”). The Company has included all normal recurring items and adjustments necessary for a fair presentation of the results of the interim period. The Company’s interim unaudited consolidated financial statements are not necessarily indicative of results that may be expected for any other interim period or for the full year.

The preparation of consolidated financial statements in conformity with U.S. GAAP requires estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and related disclosures in the consolidated financial statements and accompanying notes. Estimates are used for, but not limited to, supplier revenue, allowance for credit losses, depreciable lives of property and equipment, acquisition purchase price allocations including valuation of acquired intangible assets and goodwill and contingent consideration, valuation of operating lease right-of-use (“ROU”) assets, impairment of goodwill, other intangible assets, long-lived assets, capitalized client incentives and investments in equity method investments, valuation allowances on deferred income taxes, valuation of pensions, interest rate swaps, cross currency interest rate swaps, earnout shares and contingent liabilities. Actual results could differ materially from those estimates.