v3.25.4
Parent Company Condensed Financial Statements - Condensed Statements of Financial Condition (Parenthetical) (Details) - USD ($)
$ / shares in Units, $ in Millions
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Condensed Balance Sheet Statements, Captions [Line Items]      
Accumulated other comprehensive income tax $ 0   $ 0
Treasury stock shares 716,889   625,784
Payables $ 217   $ 195
Common Class A [Member]      
Condensed Balance Sheet Statements, Captions [Line Items]      
Common stock, par value $ 0.01   $ 0.01
Common stock, shares authorized 4,000,000,000 1,000,000,000 4,000,000,000
Common stock, shares issued 446,130,605   436,244,236
Common stock, shares outstanding 445,413,716   435,618,452
Common Class B [Member]      
Condensed Balance Sheet Statements, Captions [Line Items]      
Common stock, par value $ 0.01   $ 0.01
Common stock, shares authorized 1,000 100 1,000
Common stock, shares issued 400   400
Common stock, shares outstanding 400   400
Parent [Member]      
Condensed Balance Sheet Statements, Captions [Line Items]      
Accumulated other comprehensive income tax $ 0   $ 0
Treasury stock shares 716,889   625,784
Payables $ 217   $ 195
Parent [Member] | Common Class A [Member]      
Condensed Balance Sheet Statements, Captions [Line Items]      
Common stock, par value $ 0.01   $ 0.01
Common stock, shares authorized 4,000,000,000   4,000,000,000
Common stock, shares issued 446,130,605   436,244,236
Common stock, shares outstanding 445,413,716   435,618,452
Parent [Member] | Common Class B [Member]      
Condensed Balance Sheet Statements, Captions [Line Items]      
Common stock, par value $ 0.01   $ 0.01
Common stock, shares authorized 1,000   1,000
Common stock, shares issued 400   400
Common stock, shares outstanding 400   400