Consolidated Statements of Cash Flows Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]
Interest	$ 46,186	$ 33,952	$ 57,269
Income taxes	196,193	373,900	276,789
Supplemental schedule of non-cash investing and financing activities:
Additions to property, plant and equipment	(4,672)	30,643	0
Fair value of net assets acquired in acquisition	831,760	369,956	0
Liabilities assumed in acquisition	(257,515)	(119,157)	0
Noncash investing and financing activities, total	$ 574,245	$ 250,799	$ 0