The Charles Schwab Corporation – Parent Company Only Financial Statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Cash Flows from Operating Activities
Net income	[1]	$ 5,067		$ 7,183		$ 5,855
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Other	[1]	702		490		372
Net change in:
Other assets	[1]	(2,020)		99		(1,152)
Accrued expenses and other liabilities	[1]	4,856		(3,526)		1,322
Net cash provided by (used for) operating activities	[1]	19,587		2,057		2,118
Cash Flows from Investing Activities
Purchases of available for sale securities	[1]	(1,487)		(51,009)		(171,732)
Proceeds from sales of available for sale securities	[1]	8,465		24,704		13,306
Principal payments on available for sale securities	[1]	36,508		49,944		94,912
Other investing activities	[1]	(287)		(136)		(143)
Net cash provided by (used for) investing activities	[1]	57,411		32,048		(75,663)
Cash Flows from Financing Activities
Issuances of long-term debt	[1]	6,097		2,971		7,036
Repayments of long-term debt	[1]	(831)		(1,036)		(1,822)
Repurchases of common stock and nonvoting common stock	[1]	(2,842)		(3,395)		0
Issuance of preferred stock, net	[1]	0		740		2,806
Redemption and repurchase of preferred stock	[1]	(467)		(1,000)		(600)
Dividends paid	[1]	(2,276)		(2,110)		(1,822)
Proceeds from stock options exercised	[1]	49		64		221
Net cash provided by (used for) financing activities	[1]	(61,245)		(68,723)		96,323
Increase (Decrease) in Cash and Cash Equivalents	[1]	15,753		(34,618)		22,778
Cash and Cash Equivalents, including Amounts Restricted at Beginning of Year	[1]	58,720	[2]	93,338	[2]	70,560
Cash and Cash Equivalents, including Amounts Restricted at End of Year	[1],[2]	74,473		58,720		93,338
Non-cash investing and financing activity:
Common stock repurchased during the period but settled after period end	[1]	0		40		0
Parent Company
Cash Flows from Operating Activities
Net income		5,067		7,183		5,855
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Dividends in excess of (equity in undistributed) earnings of subsidiaries		(1,318)		2,432		(3,361)
Other		(35)		53		21
Net change in:
Other assets		(106)		(230)		76
Accrued expenses and other liabilities		77		(5)		112
Net cash provided by (used for) operating activities		3,685		9,433		2,703
Cash Flows from Investing Activities
Due from (to) subsidiaries — net		(174)		333		211
Increase in investments in subsidiaries		(2,720)		(2,139)		(10,926)
Purchases of available for sale securities		(1,486)		(5,699)		(8,002)
Proceeds from sales of available for sale securities		0		2		2
Principal payments on available for sale securities		3,721		5,803		8,754
Other investing activities		(7)		(25)		0
Net cash provided by (used for) investing activities		(666)		(1,725)		(9,961)
Cash Flows from Financing Activities
Proceeds from short-term borrowings		344		1,895		8,253
Repayments of short-term borrowings		(598)		(4,656)		(5,250)
Issuances of long-term debt		6,097		2,971		7,036
Repayments of long-term debt		(800)		(256)		(1,200)
Repurchases of common stock and nonvoting common stock		(2,842)		(3,395)		0
Issuance of preferred stock, net		0		740		2,806
Redemption and repurchase of preferred stock		(467)		(1,000)		(600)
Dividends paid		(2,276)		(2,110)		(1,822)
Proceeds from stock options exercised		49		64		220
Net cash provided by (used for) financing activities		(493)		(5,747)		9,443
Increase (Decrease) in Cash and Cash Equivalents		2,526		1,961		2,185
Cash and Cash Equivalents, including Amounts Restricted at Beginning of Year		8,800		6,839		4,654
Cash and Cash Equivalents, including Amounts Restricted at End of Year		11,326		8,800		6,839
Non-cash investing and financing activity:
Exchange of TDA Holding-issued senior notes for CSC-issued senior notes		0		0		1,987
Common stock repurchased during the period but settled after period end		$ 0		$ 40		$ 0

[1] Certain prior year amounts have been reclassified to conform to the current year presentation. See Note 1 for additional information.

[2] For more information on the nature of restrictions on restricted cash and cash equivalents, see Note 23.