Segment Reporting Adjusted EBITDA to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Adjusted EBITDA	$ 58,079	$ 107,907	$ 124,465	$ 230,544
Gain on sale of business	189,910	0	189,910	0
Restructuring Charges	(5,927)	(10,013)	(23,642)	(17,138)
Impairment charges	(2,188)	0	(2,188)	0
Project Costs	(405)	0	(1,668)	0
Lease termination costs	(491)	0	(491)	0
Loss on refinancing and extinguishment of debt	0	0	0	(770)
EBITDA	238,978	97,894	286,386	212,636
Income tax expense (benefit)	(44,239)	(9,130)	(46,570)	(21,021)
Interest expense, net of interest income	(11,575)	(9,973)	(23,507)	(19,773)
Depreciation and amortization	(37,868)	(36,914)	(74,473)	(73,173)
Net (Loss) Income Attributable to Parent	$ 145,296	$ 41,877	$ 141,836	$ 98,669