Income Taxes (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Provision for Taxes on Income

Provision for Taxes on Income	Three Months Ended March 31,
	2019			2018
Provision for Taxes on Income	$	13.3		$	4.8
Effective Tax Rate	29.7		%	6.2		%

Following is the composition of income tax expense (benefit):

	2018			2017			2016
Current:
Federal	$	45.1		$	—		$	—
Foreign	45.5			91.6			31.1
State	(2.3		)	(0.1		)	0.3
Total current tax expense	88.3			91.5			31.4
Deferred:
Federal	(56.8		)	42.6			18.4
Foreign	(5.6		)	(16.6		)	(26.8		)
State	1.7			(6.3		)	2.5
2017 Tax Act	—			(33.1		)	—
Total deferred tax benefit	(60.7		)	(13.4		)	(5.9		)
Income taxes	$	27.6		$	78.1		$	25.5