Condensed Consolidated Statements of Income (Parenthetical) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Fee waivers	$ 0	$ 3,000,000	$ 0	$ 57,000,000

Revenue From Contract With Customer, Fee Waivers Associated With Revenue From Asset Management And Administrative Service

No definition available.

Name:	schw_RevenueFromContractWithCustomerFeeWaiversAssociatedWithRevenueFromAssetManagementAndAdministrativeService
Namespace Prefix:	schw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration