v3.26.1
Fair value measurements (Details) - EBP 002 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value $ 57,423,253,583 $ 48,456,994,446
Total liabilities measured at fair value 2,905,882 2,699,765
Mortgage-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total liabilities measured at fair value 2,266,572 2,177,263
Derivatives    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 468,317 786,901
Total liabilities measured at fair value 639,310 522,502
Total fair value, excluding NAV    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 19,793,954,762 16,625,037,910
Total fair value, excluding NAV | Total equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 15,813,948,903 13,121,620,085
Total fair value, excluding NAV | JPMorgan Chase & Co.    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 10,658,411,527 8,402,328,583
Total fair value, excluding NAV | Other equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 5,155,537,376 4,719,291,502
Total fair value, excluding NAV | Corporate debt and asset-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 2,484,139,652 2,172,643,358
Total fair value, excluding NAV | U.S. federal, state, local and non-U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 775,665,981 717,344,174
Total fair value, excluding NAV | Mortgage-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 278,860,861 280,632,902
Total fair value, excluding NAV | Money market funds and other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 440,871,048 332,010,490
Total fair value, excluding NAV | Derivatives    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 468,317 786,901
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 17,055,545,012 14,325,374,045
Total liabilities measured at fair value 2,266,572 2,177,263
Level 1 | Total equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 15,813,948,903 13,121,620,085
Level 1 | JPMorgan Chase & Co.    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 10,658,411,527 8,402,328,583
Level 1 | Other equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 5,155,537,376 4,719,291,502
Level 1 | Corporate debt and asset-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 0 0
Level 1 | U.S. federal, state, local and non-U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 703,521,693 702,331,202
Level 1 | Mortgage-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 166,572,811 194,539,161
Total liabilities measured at fair value 2,266,572 2,177,263
Level 1 | Money market funds and other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 371,501,605 306,883,597
Level 1 | Derivatives    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 0 0
Total liabilities measured at fair value 0 0
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 2,738,409,750 2,299,663,865
Total liabilities measured at fair value 639,310 522,502
Level 2 | Total equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 0 0
Level 2 | JPMorgan Chase & Co.    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 0 0
Level 2 | Other equity securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 0 0
Level 2 | Corporate debt and asset-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 2,484,139,652 2,172,643,358
Level 2 | U.S. federal, state, local and non-U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 72,144,288 15,012,972
Level 2 | Mortgage-backed securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 112,288,050 86,093,741
Total liabilities measured at fair value 0 0
Level 2 | Money market funds and other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 69,369,443 25,126,893
Level 2 | Derivatives    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value 468,317 786,901
Total liabilities measured at fair value 639,310 522,502
Investments measured at NAV    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments at fair value $ 37,629,298,821 $ 31,831,956,536