Income Taxes

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Income tax expense for the three and six months ended June 30, 2017 was $122.9 million and $237.7 million, representing an effective tax rate of 31.4% and 30.4%, respectively. The prior-year three- and six-month provision for income taxes was $131.7 million and $245.5 million, representing an effective tax rate of 33.4% and 32.6%, respectively.