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INCOME TAXES
9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]  
INCOME TAXES
INCOME TAXES
Income Tax Expense
Income tax expense was $133 million and $165 million for the three months ended September 30, 2018 and 2017, respectively, resulting in effective income tax rates of 23.2% and 32.2%, respectively. Income tax expense was $370 million and $423 million for the nine months ended September 30, 2018 and 2017, respectively, resulting in effective income tax rates of 22.8% and 30.0%, respectively.
For the nine months ended September 30, 2018, the effective income tax rate of 22.8% was higher than the statutory rate of 21% primarily as a result of state taxes and permanently disallowed expenses, partially offset by permanent benefits from tax credits and tax-exempt income. For the nine months ended September 30, 2017, the effective income tax rate of 30.0% compared favorably to the statutory rate of 35% primarily as a result of the impact of the settlement of certain state tax matters and the permanent benefits from tax credits and tax-exempt income.
Deferred Tax Liability
At September 30, 2018, the Company reported a net deferred tax liability of $430 million, compared to $571 million as of December 31, 2017. The decrease in the net deferred tax liability was primarily attributable to the tax effect of net unrealized losses on securities and derivatives.