INCOME TAXES	6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The income tax benefit for the three months ended June 30, 2018 reflects a $430 million deferred tax benefit resulting from the loss on the expected sale of KMG attributable to its original tax basis and subsequent capital contributions to fund accumulated losses. See Note 3 for information on the expected sale of KMG. The effective income tax rate was 5.8% for the six months ended June 30, 2018, compared to 35.4% for the six months ended June 30, 2017, primarily due to the deferred tax benefit recognized from the loss on the expected sale of KMG and tax reform law enacted on December 22, 2017 (the "Tax Reform Law"), which was partially offset by the impact of the reinstatement of the non-deductible health insurance industry fee in 2018. The income tax rate for the six months ended June 30, 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 six months ended June 30, 2018 by $12.7 million.

INCOME TAXES

The income tax benefit for the three months ended June 30, 2018 reflects a $430 million deferred tax benefit resulting from the loss on the expected sale of KMG attributable to its original tax basis and subsequent capital contributions to fund accumulated losses. See Note 3 for information on the expected sale of KMG. The effective income tax rate was 5.8% for the six months ended June 30, 2018, compared to 35.4% for the six months ended June 30, 2017, primarily due to the deferred tax benefit recognized from the loss on the expected sale of KMG and tax reform law enacted on December 22, 2017 (the "Tax Reform Law"), which was partially offset by the impact of the reinstatement of the non-deductible health insurance industry fee in 2018. The income tax rate for the six months ended June 30, 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 six months ended June 30, 2018 by $12.7 million.