v3.26.1
Master Trust - Schedule of Master Trust Net Assets (Details) - 401(k) SP - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Other assets    
Cash $ 20,808 $ 4,439
Receivables for securities sold 17,058 18,387
Total Master Trust assets 23,082,042 18,857,033
Liabilities    
Payables for securities purchased (36,382) (13,900)
Net Master Trust assets 23,045,660 18,843,133
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 20,401,016 16,483,121
Fully benefit-responsive synthetic guaranteed investment contracts 664,818 698,407
Other assets    
Cash 5,324 11,860
Receivables for securities sold 10,176 105,187
Accrued income 37,033 29,286
Total Other assets 52,533 146,333
Total Master Trust assets 21,118,367 17,327,861
Liabilities    
Payables for securities purchased (24,904) (140,577)
Net Master Trust assets 21,093,463 17,187,284
Plan’s Interest in Master Trust | Caterpillar Inc. common stock    
EBP, Master Trust [Line Items]    
Investments, at fair value 5,008,341 3,444,106
Plan’s Interest in Master Trust | Common stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 3,750,064 3,212,938
Plan’s Interest in Master Trust | Preferred stocks    
EBP, Master Trust [Line Items]    
Investments, at fair value 22,271 15,528
Plan’s Interest in Master Trust | Preferred corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 5,099 7,012
Plan’s Interest in Master Trust | Other corporate bonds and notes    
EBP, Master Trust [Line Items]    
Investments, at fair value 1,038,052 832,395
Plan’s Interest in Master Trust | U.S. government securities    
EBP, Master Trust [Line Items]    
Investments, at fair value 853,555 784,795
Plan’s Interest in Master Trust | Common collective trusts    
EBP, Master Trust [Line Items]    
Investments, at fair value 9,547,626 8,024,304
Plan’s Interest in Master Trust | Registered investment companies    
EBP, Master Trust [Line Items]    
Investments, at fair value 22,685 7,914
Plan’s Interest in Master Trust | Other investments, net    
EBP, Master Trust [Line Items]    
Investments, at fair value $ 153,323 $ 154,129