Operating Information by Segment and Geographic Area - Reconciliation to Consolidated Amounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reconciliation of total segment profit to earnings (loss) before taxes
Total segment profit (loss)	$ 57,800	$ 173,100	$ (536,700)	$ 277,000
Corporate general and administrative expense	(10,362)	(61,058)	(115,426)	(134,726)
Impairment, restructuring and other exit costs	(333,988)	0	(388,027)	0
Interest income (expense), net	(5,000)	(14,700)	(15,900)	(33,300)
Earnings (loss) attributable to noncontrolling interests from continuing operations	10,300	14,200	(18,900)	31,500
EARNINGS (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	(281,268)	111,490	(1,074,854)	140,468
Reportable segments
Reconciliation of total segment profit to earnings (loss) before taxes
Total segment profit (loss)	$ 57,800	$ 173,100	$ (536,700)	$ 277,000