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Payables to Brokerage Clients	12 Months Ended
Payables to Brokerage Clients	Dec. 31, 2014
Payables to Brokerage Clients [Abstract]
Payables to Brokerage Clients	12.Payables to Brokerage Clients The principal source of funding for Schwab’s margin lending is cash balances in brokerage client accounts, which are included in payables to brokerage clients. Cash balances in interest-bearing brokerage client accounts were $27.6 billion and $28.8 billion at December 31, 2014 and 2013, respectively. The average rate paid on cash balances in interest-bearing brokerage client accounts was 0.01% in 2014 and 2013.