Net (Loss) Income Per Share - (Reconciliation Of The Numerator And Denominator Of Basic And Diluted Net Loss Per Share) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Loss from continuing operations	$ (68,974)			$ (41,431)			$ 106,217	$ (152,095)
Loss from discontinued operations, net of tax	(6,913)			(37,984)			(41,616)	(51,898)
NET (LOSS) INCOME	$ (75,887)	$ 10,558	$ 129,930	$ (79,415)	$ (106,005)	$ (18,573)	$ 64,601	$ (203,993)
Denominator:
For basic per share data—weighted average shares (in shares)	230,040			226,598			228,985	225,804
Dilutive effect of ordinary share equivalents (in shares)	0			0			4,394	0
For diluted per share data—weighted average shares (in shares)	230,040			226,598			233,379	225,804
Stock Options
Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)							7,100
Stock Award
Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)							6,400