Taxes on Income	6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
Taxes on Income	Taxes on Income On December 22, 2017, the Tax Act was signed into law. Among other things, the Tax Act lowered the federal corporate income tax rate from 35% to 21%, effective for tax years including or commencing January 1, 2018. Schwab’s effective tax rate for the three and six months ended June 30, 2018 was 23.4% and 22.7%, respectively, compared to 36.7% and 35.0% for the three and six months ended June 30, 2017, respectively, resulting from the impact of the Tax Act of 2017. Also as a result of the Tax Act, Schwab recognized a $46 million one-time non-cash charge to taxes on income in the fourth quarter of 2017 associated with the remeasurement of net deferred tax assets and other tax adjustments related to the Tax Act. While we were able to make a reasonable estimate of the impact of the reduction in the corporate tax rate in the fourth quarter of 2017, our accounting for various elements of the Tax Act may be affected by clarifications of the Tax Act and other related analysis. During the second quarter of 2018, Schwab concluded its analysis of the effect of bonus depreciation that allows for immediate expensing of qualified property related to the Tax Act. The impact of the true-up adjustment from this analysis was determined to be immaterial. We are continuing to gather additional information to complete the accounting for the remaining estimated items, including the state tax effect of adjustments made to federal temporary differences, and expect to complete the accounting within the prescribed measurement period. As such, the impact of the Tax Act is an estimate pending further information and the analysis noted. As of January 1, 2018, Schwab adopted new accounting guidance that decreased AOCI and increased retained earnings by $33 million for the reclassification of certain impacts of the Tax Act as described in Note 2.

Taxes on Income

On December 22, 2017, the Tax Act was signed into law. Among other things, the Tax Act lowered the federal corporate income tax rate from 35% to 21%, effective for tax years including or commencing January 1, 2018. Schwab’s effective tax rate for the three and six months ended June 30, 2018 was 23.4% and 22.7%, respectively, compared to 36.7% and 35.0% for the three and six months ended June 30, 2017, respectively, resulting from the impact of the Tax Act of 2017.

Also as a result of the Tax Act, Schwab recognized a $46 million one-time non-cash charge to taxes on income in the fourth quarter of 2017 associated with the remeasurement of net deferred tax assets and other tax adjustments related to the Tax Act. While we were able to make a reasonable estimate of the impact of the reduction in the corporate tax rate in the fourth quarter of 2017, our accounting for various elements of the Tax Act may be affected by clarifications of the Tax Act and other related analysis.

During the second quarter of 2018, Schwab concluded its analysis of the effect of bonus depreciation that allows for immediate expensing of qualified property related to the Tax Act. The impact of the true-up adjustment from this analysis was determined to be immaterial. We are continuing to gather additional information to complete the accounting for the remaining estimated items, including the state tax effect of adjustments made to federal temporary differences, and expect to complete the accounting within the prescribed measurement period. As such, the impact of the Tax Act is an estimate pending further information and the analysis noted.

As of January 1, 2018, Schwab adopted new accounting guidance that decreased AOCI and increased retained earnings by $33 million for the reclassification of certain impacts of the Tax Act as described in Note 2.