Business Acquisitions (Textual) (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended		6 Months Ended
	Jan. 01, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Effective income tax rate		27.20%	26.60%	26.70%	27.70%
Pretax loss on derecognition of preexisting ownership interest		$ 2,400		$ 1,078
LTG
Business Acquisition [Line Items]
Remaining equity interest percentage acquired in equity investee	67.50%
Consideration paid for acquisition	$ 328,944
Cash consideration paid	169,218
Purchase price holdback/ other accrued liabilities	$ 31,885
Unregistered shares issued (in shares)	4.4
Value of unregistered shares issued	$ 127,841
Goodwill expected to be deductible for tax purposes	$ 129,900
Effective income tax rate	25.00%
Goodwill increase due to refinements in valuation		7,500
Decrease in intangible assets due to working capital adjustments		$ 9,600