Receivables and Revenue - Additional Information (Detail) - USD ($) $ in Millions |
Mar. 27, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Receivables And Revenue [Line Items] | |||
| Receivables from clients collateral | $ 7,912 | $ 7,224 | |
| Collateral held for securities purchased under agreements to resell | 591 | 697 | |
| Receivable from mutual fund, insurance companies and other | 1,140 | 1,047 | |
| Expected credit loss for receivables from contracts with customers | 0 | 0 | |
| Expected credit loss for receivables from clients and securities purchased under agreement to resell | 0 | 0 | |
| Customer Contracts [Member] | |||
| Receivables And Revenue [Line Items] | |||
| Receivable from clients balance | 1,091 | 1,056 | $ 883 |
| Receivable from mutual fund, insurance companies and other | $ 390 | $ 368 | $ 377 |