XML 16 R7.htm IDEA: XBRL DOCUMENT v3.26.1
GATX Corporation Master Trust
 12 Months Ended
Dec. 31, 2025
EBP 004  
EBP, Master Trust [Line Items]  
GATX Corporation Master Trust GATX Corporation Master Trust
The Plan's investments are held in the GATX Corporation Master Trust (Master Trust) which was established for the investment of assets of the Plan and one other Company sponsored retirement savings plan. The Master Trust assets are allocated among the participating plans by assigning to each plan those transactions (primarily contributions, benefit payments and plan-specific expenses) that can be specifically identified and by allocating among both plans, in proportion to the fair value of the assets assigned to each plan, income and expenses resulting from the collective investment of the assets of the Master Trust.
The following tables present the Master Trust balances and the Plan's interest in the Master Trust balances:
December 31, 2025
Master Trust BalancesPlan's Interest in Master Trust Balances
Mutual funds$114,161,653  $17,043,745 
GATX common stock fund31,944,636 948,864 
Collective trusts141,449,235 5,807,606 
Total investments at fair value287,555,524 23,800,215 
Plus:
Other receivables918 27 
Net assets at end of year$287,556,442 $23,800,242 
December 31, 2024
Master Trust BalancesPlan's Interest in Master Trust Balances
Mutual funds$98,986,627 $14,799,815 
GATX common stock fund30,869,976 1,229,888 
Collective trusts130,498,282 6,099,758 
Total investments at fair value260,354,885 22,129,461 
Plus:
Other receivables1,195 48 
Net assets at end of year$260,356,080 $22,129,509 
The following table presents the net appreciation in fair value of investments and investment income of the Master Trust:
Years Ended December 31
20252024
Net appreciation in fair value of investments$34,373,723 $34,703,767 
Interest and dividend income3,958,425 3,692,811 
Total investment income$38,332,148 $38,396,578