Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (209,722)	$ (260,746)	$ (209,722)	$ (260,746)	$ (279,763)	$ (200,885)	$ (188,553)	$ (174,950)
Pretax income (loss)	50,279	(43,933)	(26,743)	(42,051)
Income tax effect	4,699	(5,957)	5,557	(7,381)
Reclassification of unrealized loss (gain)	23,947	(30,317)	20,770	(47,202)
Reclassification of deferred income taxes	(5,722)	7,153	(5,135)	11,119
OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness		379	766	(379)
Other comprehensive income from unconsolidated subsidiaries	(3,162)	(1,240)	(4,052)	98
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(173,346)	(251,709)	(173,346)	(251,709)	(243,524)	(170,893)	(181,890)	(177,597)
Pretax income (loss)	70,178	(69,440)	(3,219)	(73,733)
Income tax effect	0	0	0	0
Reclassification of unrealized loss (gain)	0	0	0	0
Reclassification of deferred income taxes	0	0	0	0
OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness		(379)	766	(379)
Other comprehensive income from unconsolidated subsidiaries	0	0	0	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(1,772)	4,726	(1,772)	4,726	(1,994)	5,358	5,987	14,374
Pretax income (loss)	(19,865)	28,594	(23,490)	34,769
Income tax effect	4,690	(6,739)	5,548	(8,163)
Reclassification of unrealized loss (gain)	20,153	(30,256)	14,207	(47,431)
Reclassification of deferred income taxes	(4,756)	7,140	(3,395)	11,177
OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness		0	0	0
Other comprehensive income from unconsolidated subsidiaries	0	0	0	0
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(27,136)	(10,209)	(27,136)	(10,209)	(29,939)	(31,934)	(7,856)	(8,075)
Pretax income (loss)	(34)	(3,087)	(34)	(3,087)
Income tax effect	9	782	9	782
Reclassification of unrealized loss (gain)	3,794	(61)	6,563	229
Reclassification of deferred income taxes	(966)	13	(1,740)	(58)
OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness		0	0	0
Other comprehensive income from unconsolidated subsidiaries	0	0	0	0
Accumulated Gain (Loss) from Unconsoldated Subsidiaries [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(7,468)	(3,554)	(7,468)	(3,554)	$ (4,306)	$ (3,416)	$ (4,794)	$ (3,652)
Pretax income (loss)	0	0	0	0
Income tax effect	0	0	0	0
Reclassification of unrealized loss (gain)	0	0	0	0
Reclassification of deferred income taxes	0	0	0	0
OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness		0	0	0
Other comprehensive income from unconsolidated subsidiaries	(3,162)	(1,240)	(4,052)	98
Interest expense, net of interest income [Member] | Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification of unrealized loss (gain)	2,538	(1,459)	1,011	(4,914)
Interest expense, net of interest income [Member] | Currency Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification of unrealized loss (gain)	(2,696)	(4,071)	(8,043)	(12,720)
Other income, net [Member] | Currency Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification of unrealized loss (gain)	20,874	(24,726)	21,802	(29,797)
Other income, net [Member] | Forward Contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification of unrealized loss (gain)	$ (563)	$ 0	$ (563)	$ 0