Acquisition Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	1 Months Ended
	Oct. 31, 2017	Oct. 03, 2017
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 652,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		8,950,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		91,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent		(1,606,000)
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other, Net		81,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		$ 8,168,000
Goodwill Acquired from Acquisitions	$ 2,987,000