v3.26.1
Master Trust - Schedule of Master Trust Net Assets (Details) - SIP - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Other assets    
Cash $ 39 $ 35
Receivables for securities sold 130 194
Total Master Trust assets 550,305 425,372
Liabilities    
Payables for securities purchased (155) (162)
Net Master Trust assets 550,150 425,210
Master Trust    
EBP, Master Trust [Line Items]    
Investments, at fair value 21,737,110 17,558,746
Fully benefit-responsive synthetic guaranteed investment contracts 745,342 780,302
Other assets    
Cash 5,609 12,700
Receivables for securities sold 10,745 113,787
Accrued income 39,453 31,300
Total Other assets 55,807 157,787
Total Master Trust assets 22,538,259 18,496,835
Liabilities    
Payables for securities purchased (26,413) (151,488)
Net Master Trust assets 22,511,846 18,345,347
Master Trust | Caterpillar Inc. common stock    
EBP, Master Trust [Line Items]    
Investments, at fair value 5,495,510 3,784,230
Master Trust | Common stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 3,921,926 3,360,443
Master Trust | Preferred stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 23,527 16,468
Master Trust | Preferred corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 5,481 7,570
Master Trust | Other corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 1,116,507 899,155
Master Trust | U.S. government securities    
EBP, Master Trust [Line Items]    
Investments, at fair value 917,546 847,015
Master Trust | Common collective trusts    
EBP, Master Trust [Line Items]    
Investments, at fair value 10,071,355 8,473,155
Master Trust | Registered investment companies    
EBP, Master Trust [Line Items]    
Investments, at fair value 24,181 8,351
Master Trust | Other investments, net    
EBP, Master Trust [Line Items]    
Investments, at fair value 161,077 162,359
Plan’s Interest in Master Trust    
EBP, Master Trust [Line Items]    
Investments, at fair value 481,312 363,656
Fully benefit-responsive synthetic guaranteed investment contracts 34,911 32,739
Other assets    
Cash 72 236
Receivables for securities sold 147 2,263
Accrued income 666 503
Total Other assets 885 3,002
Total Master Trust assets 517,108 399,397
Liabilities    
Payables for securities purchased (413) (2,868)
Net Master Trust assets 516,695 396,529
Plan’s Interest in Master Trust | Caterpillar Inc. common stock    
EBP, Master Trust [Line Items]    
Investments, at fair value 227,029 160,859
Plan’s Interest in Master Trust | Common stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 45,529 35,211
Plan’s Interest in Master Trust | Preferred stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 325 218
Plan’s Interest in Master Trust | Preferred corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 109 144
Plan’s Interest in Master Trust | Other corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 22,000 16,801
Plan’s Interest in Master Trust | U.S. government securities    
EBP, Master Trust [Line Items]    
Investments, at fair value 18,291 16,023
Plan’s Interest in Master Trust | Common collective trusts    
EBP, Master Trust [Line Items]    
Investments, at fair value 165,425 132,194
Plan’s Interest in Master Trust | Registered investment companies    
EBP, Master Trust [Line Items]    
Investments, at fair value 411 97
Plan’s Interest in Master Trust | Other investments, net    
EBP, Master Trust [Line Items]    
Investments, at fair value $ 2,193 $ 2,109