Business Combinations Purchase Agreement (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Oct. 23, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 950,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset		$ 184,838
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		932,840
Installment Payment for Acquisition, Next Twelve Months		50,000
Installment Payment for Acquisition, Year Two		50,000
Installment Payment for Acquisition, Year Three		50,000
Installment Payment for Acquisition, Year Four		$ 50,000
Cash [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	748,002
Accrued Liabilities [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 200,000