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Description of Business | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Description of Business | Description of Business As used herein, "GATX," "we," "us," "our," and similar terms refer to GATX Corporation and its subsidiaries, unless indicated otherwise. We lease, operate, manage, and remarket long-lived, widely used assets, primarily in the rail market. We report our financial results through three primary business segments: Rail North America, Rail International, and Engine Leasing. Fin ancial results for our tank container leasing business ("Trifleet") are reported in the Other segment. On May 29, 2025 GATX entered into a definitive agreement to acquire approximately 105,000 railcars from Wells Fargo Bank, N.A. ("Wells Fargo") for $4.4 billion through a newly formed joint venture with Brookfield Infrastructure Partners L.P. and its institutional partners (collectively, “Brookfield”). Initially, GATX's ownership share in the joint venture will be 30%, with Brookfield's share at 70%. GATX will have the option to acquire up to 100% of the joint venture equity over time. A portion of the purchase price will be financed by the joint venture in the form of debt financing. GATX will guarantee the joint venture’s debt financing obligations. In the second quarter of 2025, the newly formed joint venture entered into deal contingent interest rate swaps, with total notional value of $2.4 billion, in order to hedge the exposure on the debt financing expected upon closing of the transaction. The hedges are designated as cash flow hedges. GATX will also directly purchase approximately 223 locomotives from Wells Fargo, and Brookfield will directly acquire Wells Fargo’s rail finance lease portfolio. GATX will serve as manager of the railcars in the joint venture as well as the finance lease portfolio directly owned by Brookfield. On September 16, 2025, GATX announced the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 in connection with the transaction, which followed clearance from the European Commission under the EU merger regulation in August 2025. Additionally, the legal mandatory waiting period under the Canadian Competition Act expired on September 24, 2025 and, on October 9, 2025, the parties received a no-action letter from the Commissioner of Competition indicating that he does not intend to challenge the transaction under the merger provisions of the Canadian Competition Act. Transaction approval is pending with additional regulatory agencies, following which the transaction is anticipated to close in the first quarter of 2026 or sooner, subject to customary closing conditions. On September 23, 2025, GATX Rail Europe entered into a definitive agreement to acquire approximately 6,000 railcars from DB Cargo AG. The transaction is subject to customary closing conditions, including required regulatory approvals and clearances, and is expected to close in the fourth quarter of 2025.

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- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482836/275-10-55-4 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482836/275-10-55-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 + Details
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