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INCOME TAXES QTR (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
INCOME TAXES
Statutory federal income tax rate (as a percent)			21.00%		35.00%
Net tax charge					$ 24.7
Recognized charge representing provisional estimate of one-time transition tax	$ (3.5)				31.6
Estimate of deferred income tax benefit related to corporate rate change					(6.8)
Effective income tax rate (as a percent)	25.50%	18.10%	26.30%	21.50%
Increase (decrease) in income taxes	$ 4.7		$ 9.0
Effective tax rate reduction due to true up of provisional transition tax liability	4.60%		2.20%
Increase in effective tax rates due to GILTI and BEAT taxes	1.30%		2.90%
Decrease in effective tax rate from employee share-based compensation deductions		(5.20%)		(1.40%)
Increase (decrease) in effective tax rate from repatriation		(4.10%)		(1.90%)
Income tax uncertainties	$ 3.3		$ 3.3		3.1
Amount of income tax uncertainties that, if recognized, would impact the effective tax rate	3.3		3.3		$ 3.1
Decrease in liability for uncertain tax positions, high end of range	$ 1.4		$ 1.4

X

- Definition

Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017.

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The tax rate attributable to GILTI and BEAT taxes.

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The increase (decrease) during the reporting period in the effective tax rate resulting from repatriation activities.

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Amount of reasonable estimate for income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.

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