INCOME TAXES	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company does not recognize a tax benefit unless the Company concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, the Company recognizes a tax benefit measured at the largest amount of the tax benefit that the Company believes is greater than 50% likely to be realized. The gross unrecognized income tax benefits were $16.7 and $18.4 at June 30, 2017 and December 31, 2016, respectively. It is anticipated that the amount of the unrecognized income tax benefits will change within the next 12 months; however, these changes are not expected to have a significant impact on the results of operations, cash flows or the financial position of the Company. As of June 30, 2017 and December 31, 2016, $16.7 and $18.4, respectively, are the approximate amounts of gross unrecognized income tax benefits that, if recognized, would favorably affect the effective income tax rate in future periods. The Company recognizes interest and penalties related to unrecognized income tax benefits in income tax expense. Accrued interest and penalties related to uncertain tax positions totaled $8.1 and $9.9 as of June 30, 2017 and December 31, 2016, respectively. The valuation allowance provided as a reserve against certain deferred tax assets is $32.1 and $31.3 as of June 30, 2017 and December 31, 2016, respectively. The Company has substantially concluded all U.S. federal income tax matters for years through 2012. Substantially all material state and local and foreign income tax matters have been concluded through 2011 and 2004, respectively. The Internal Revenue Service concluded the examination of the Company's 2014 federal consolidated income tax return in 2016, which did not include Covance Inc. Covance Inc.'s 2013 federal consolidated income tax return is currently under examination by the Internal Revenue Service. The Canada Revenue Agency is currently examining the Company's Canadian subsidiaries' 2013 and 2014 tax returns. The Company has various state and foreign income tax examinations ongoing throughout the year. The Company believes adequate provisions have been recorded related to all open tax years.

INCOME TAXES

The Company does not recognize a tax benefit unless the Company concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, the Company recognizes a tax benefit measured at the largest amount of the tax benefit that the Company believes is greater than 50% likely to be realized.

The gross unrecognized income tax benefits were $16.7 and $18.4 at June 30, 2017 and December 31, 2016, respectively. It is anticipated that the amount of the unrecognized income tax benefits will change within the next 12 months; however, these changes are not expected to have a significant impact on the results of operations, cash flows or the financial position of the Company.

As of June 30, 2017 and December 31, 2016, $16.7 and $18.4, respectively, are the approximate amounts of gross unrecognized income tax benefits that, if recognized, would favorably affect the effective income tax rate in future periods.

The Company recognizes interest and penalties related to unrecognized income tax benefits in income tax expense. Accrued interest and penalties related to uncertain tax positions totaled $8.1 and $9.9 as of June 30, 2017 and December 31, 2016, respectively.

The valuation allowance provided as a reserve against certain deferred tax assets is $32.1 and $31.3 as of June 30, 2017 and December 31, 2016, respectively.

The Company has substantially concluded all U.S. federal income tax matters for years through 2012. Substantially all material state and local and foreign income tax matters have been concluded through 2011 and 2004, respectively.

The Internal Revenue Service concluded the examination of the Company's 2014 federal consolidated income tax return in 2016, which did not include Covance Inc. Covance Inc.'s 2013 federal consolidated income tax return is currently under examination by the Internal Revenue Service. The Canada Revenue Agency is currently examining the Company's Canadian subsidiaries' 2013 and 2014 tax returns. The Company has various state and foreign income tax examinations ongoing throughout the year. The Company believes adequate provisions have been recorded related to all open tax years.