INCOME TAXES	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The effective income tax rate was 30.7% for the three months ended March 31, 2018, compared to 34.0% for the three months ended March 31, 2017 primarily due to the tax reform law enacted on December 22, 2017 (the "Tax Reform Law"), partially offset by the impact of the reinstatement of the non-deductible health insurance industry fee in 2018. The income tax rate for the three months ended March 31, 2017 included previously non-deductible transaction costs that, as a result of the termination of the Merger Agreement, became deductible for tax purposes. The Tax Reform Law reduced the statutory federal corporate income tax rate to 21 percent from 35 percent, beginning in 2018. The accounting for certain income tax effects of the Tax Reform Law is provisional. Revisions to prior estimates are recorded as additional analysis is completed using information available at each measurement date during 2018, with adjustments to the income tax provision recorded as new information becomes known. Revisions to our prior estimates for the income tax effects of the Tax Reform Law decreased our tax expense for the three months ended March 31, 2018 by $6.6 million.

INCOME TAXES

3 Months Ended

Mar. 31, 2018

The effective income tax rate was 30.7% for the three months ended March 31, 2018, compared to 34.0% for the three months ended March 31, 2017 primarily due to the tax reform law enacted on December 22, 2017 (the "Tax Reform Law"), partially offset by the impact of the reinstatement of the non-deductible health insurance industry fee in 2018. The income tax rate for the three months ended March 31, 2017 included previously non-deductible transaction costs that, as a result of the termination of the Merger Agreement, became deductible for tax purposes. The Tax Reform Law reduced the statutory federal corporate income tax rate to 21 percent from 35 percent, beginning in 2018. The accounting for certain income tax effects of the Tax Reform Law is provisional. Revisions to prior estimates are recorded as additional analysis is completed using information available at each measurement date during 2018, with adjustments to the income tax provision recorded as new information becomes known. Revisions to our prior estimates for the income tax effects of the Tax Reform Law decreased our tax expense for the three months ended March 31, 2018 by $6.6 million.