Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2020	Mar. 31, 2019
Reconciliation of cash, cash equivalents and amounts reported within the balance sheet
Cash and cash equivalents	[1]	$ 68,458	$ 32,558
Restricted cash and cash equivalents amounts included in cash and investments segregated and on deposit for regulatory purposes	[1]	26,249	9,130
Total cash and cash equivalents, including amounts restricted shown in the statement of cash flows	[1]	$ 94,707	$ 41,688

[1] For more information on the nature of restrictions on restricted cash and cash equivalents, see Note 14.