v3.26.1
Consolidated Statements of Cash Flows - USD ($)
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Statement of Cash Flows [Abstract]    
Net Income $ 190,100,000 $ 154,100,000
Adjustments to reconcile income to net cash provided by operating activities:    
Depreciation, Depletion and Amortization 347,000,000.0 220,600,000
Net gains on sales of assets (122,200,000) (77,200,000)
Asset impairments 1,700,000 3,600,000
Deferred income taxes 36,400,000 32,000,000.0
Share of affiliates’ earnings, net of dividends 11,200,000 (41,100,000)
Changes in working capital items 11,100,000 (6,500,000)
Net cash provided by operating activities 475,300,000 285,500,000
Investing Activities    
Portfolio investments and capital additions (4,720,500,000) (515,300,000)
Portfolio proceeds 379,700,000 146,500,000
Purchases of assets previously leased (3,800,000) (15,000,000.0)
Proceeds from sales of other assets 29,100,000 17,400,000
Other 2,300,000 1,400,000
Net cash used in investing activities (4,313,200,000) (365,000,000.0)
Financing Activities    
Net proceeds from issuances of debt with original maturities longer than 90 days 994,000,000.0 879,800,000
Repayments of debt with original maturities longer than 90 days (1,149,800,000) (406,600,000)
Net decrease in debt with original maturities of 90 days or less (25,700,000) (200,000)
Share repurchases (48,300,000) (17,100,000)
Dividends to GATX shareholders (49,000,000.0) (45,700,000)
Distributions to non-controlling interest (49,900,000) 0
Exercise of GABX call option (66,200,000) 0
Other (1,300,000) 15,400,000
Net cash (used in) provided by financing activities (396,200,000) 425,600,000
Effect of Exchange Rate Changes on Cash, Cash Equivalents, and Restricted Cash (3,600,000) 7,300,000
Net (decrease) increase in Cash, Cash Equivalents, and Restricted Cash during the period (4,237,700,000) 353,400,000
Cash, Cash Equivalents, and Restricted Cash at beginning of the period 4,984,900,000 401,800,000
Cash, Cash Equivalents, and Restricted Cash at end of the period $ 747,200,000 $ 755,200,000