| USD ($) $ in Millions | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 | Dec 31, 2016 | Dec 31, 2015 | Dec 31, 2014 | Dec 31, 2013 | Dec 31, 2012 | Dec 31, 2011 | Dec 31, 2010 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Assets | ||||||||||||||||
Cash and cash equivalents | $ 4,963 | $ 3,633 | $ 3,753 | |||||||||||||
Cash segregated for regulatory purposes | 50,332 | 36,600 | 28,840 | |||||||||||||
Securities - segregated for regulatory purposes | 26,521 | 27,846 | 35,386 | |||||||||||||
Cash and securities segregated for regulatory purposes | - | - | - | |||||||||||||
Securities borrowed | 11,589 | 5,369 | 5,835 | |||||||||||||
Securities borrowed | - | - | - | |||||||||||||
Securities purchased under agreements to resell | 7,117 | 6,575 | 5,504 | |||||||||||||
us-gaap_FinancialInstrumentsOwnedAtFairValueByPledgeAbstract | ||||||||||||||||
us-gaap_FinancialInstrumentsOwnedAndNotPledgedAtFairValue | - | - | - | |||||||||||||
us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue | - | - | - | |||||||||||||
Financial instruments owned, at fair value | 4,982 | 1,924 | 1,488 | |||||||||||||
Receivables: | ||||||||||||||||
Customers, less allowance for credit losses of $24 and $25 as of December 31, 2025 and December 31, 2024 | 90,475 | 64,432 | 44,472 | |||||||||||||
Brokers, dealers, and clearing organizations | 5,161 | 2,196 | 1,643 | |||||||||||||
Receivable from affiliate | - | - | - | |||||||||||||
Interest | 530 | 446 | 375 | |||||||||||||
Total receivables | 96,166 | 67,074 | 46,490 | |||||||||||||
Other assets | 1,570 | 1,121 | 1,127 | |||||||||||||
Total assets | 203,240 | 150,142 | 128,423 | |||||||||||||
Liabilities and equity | ||||||||||||||||
Short-term borrowings | 19 | 14 | 17 | |||||||||||||
Securities loaned | 24,751 | 16,248 | 11,347 | |||||||||||||
us-gaap_SecuritiesSoldUnderAgreementsToRepurchase | - | - | - | |||||||||||||
Financial instruments sold, not yet purchased, at fair value | 740 | 293 | 193 | |||||||||||||
Securities loaned | - | - | - | |||||||||||||
Payables | ||||||||||||||||
Customers | 154,336 | 115,343 | 101,012 | |||||||||||||
Brokers, dealers and clearing organizations | 1,566 | 476 | 590 | |||||||||||||
Affiliate | 217 | 195 | 210 | |||||||||||||
Accounts payable, accrued expenses and other liabilities | 818 | 665 | 676 | |||||||||||||
Interest | 321 | 311 | 311 | |||||||||||||
Total payables | 157,258 | 116,990 | 102,799 | |||||||||||||
Senior notes payable | - | - | - | |||||||||||||
Senior secured credit facility | - | - | - | |||||||||||||
Total liabilities | 182,768 | 133,545 | 114,356 | |||||||||||||
Redeemable noncontrolling interests | - | - | - | |||||||||||||
Stockholders' equity: | ||||||||||||||||
Common stock | - | - | - | |||||||||||||
Additional paid-in capital | 1,957 | 1,816 | 1,726 | |||||||||||||
Retained earnings | 3,365 | 2,515 | 1,852 | |||||||||||||
Accumulated other comprehensive income, net of income taxes of $0 as of both December 31, 2025 and December 31, 2024 | 56 | (45) | 8 | |||||||||||||
Treasury stock, at cost, 716,889 and 625,784 shares as of December 31, 2025 and December 31, 2024 | 16 | 7 | 3 | |||||||||||||
Total stockholders' equity | 5,363 | 4,280 | 3,584 | |||||||||||||
Noncontrolling interests | 15,109 | 12,317 | 10,483 | |||||||||||||
Total equity | 20,472 | 16,597 | 14,067 | |||||||||||||
Total liabilities and equity | $ 203,240 | $ 150,142 | $ 128,423 |