Segment Information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of reportable segments	2
Clients, except for Schwab proprietary mutual funds, that accounted for more than 10% of the Company's net revenues	Except for Schwab's proprietary mutual funds, which are considered a single client for purposes of this computation, no single client accounted for more than 10% of the Company's net revenues in 2014, 2013, or 2012.
Schwab Funds money market funds [Member] | Net revenues [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	7.00%	9.00%	10.00%
California [Member] | Client accounts [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	23.00%	23.00%	23.00%