Impairment and Other Charges (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 16, 2021	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Litigation settlement, charge			$ 143,000
Loss contingency accrual			57,000		$ 57,000
Impairment and other charges			$ 142,918	$ 130,411	$ 158,973	$ 130,411
A M C N I Reporting Unit
Derivative [Line Items]
Impairment and other charges				105,300		105,300
Impairment charge related to goodwill				$ 25,100		$ 25,100
Subsequent Event
Derivative [Line Items]
Loss contingency	$ 200,000
Plaintiffs | Subsequent Event
Derivative [Line Items]
Loss contingency	200,000
Litigation settlement, charge	143,000
Loss contingency accrual	$ 57,000
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff
Derivative [Line Items]
Gain (loss) on disposal		$ 16,100