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INCOME TAXES
6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]  
INCOME TAXES
INCOME TAXES
Income Tax Expense
Income tax expense was $124 million and $144 million for the three months ended June 30, 2018 and 2017, respectively, resulting in effective tax rates of 22.6% and 31.1%, respectively. Income tax expense was $237 million and $258 million for the six months ended June 30, 2018 and 2017, respectively, resulting in effective tax rates of 22.6% and 28.8%, respectively.
For the six months ended June 30, 2018, the effective tax rate of 22.6% was higher than the statutory rate of 21% primarily as a result of state taxes, partially offset by permanent benefits from tax credits and tax-exempt income. For the six months ended June 30, 2017, the effective tax rate of 28.8% 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 June 30, 2018, the Company reported a net deferred tax liability of $456 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.