Equity And Earnings Per Share (IBG LLC Ownership of Member Interests) (Details) |
Jun. 30, 2026
shares
|
|---|---|
| Ownership Percentage | 100.00% |
| Membership Interests | 1,701,408,529 |
| IBG Inc [Member] | |
| Ownership Percentage | 26.50% |
| Membership Interests | 450,671,113 |
| Holdings [Member] | |
| Ownership Percentage | 73.50% |
| Membership Interests | 1,250,737,416 |