SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 2) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Consolidating Financial Statements, Captions
Net sales	$ 896,860	$ 775,246	$ 745,156	$ 781,689	$ 919,914	$ 844,863	$ 874,769	$ 893,253		$ 3,198,951	$ 3,532,799	$ 3,886,072
Operating income (loss)	(279,959)	(119,704)	$ 18,848	$ 18,409	$ (115,489)	$ 55,166	$ 70,486	$ 46,726		(362,406)	56,889	(1,091,106)
Intercompany interest and charges										0	0	0
Interest expense and other										99,442	80,501	68,041
(Loss) income from continuing operations before income taxes										(461,848)	(23,612)	(1,159,147)
Income tax (benefit) expense										(36,457)	19,340	(111,187)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(425,391)		(1,047,960)
Net income										(425,391)	(42,952)	(1,047,960)
Other Comprehensive Income (Loss), Net of Tax										28,308	(49,016)	(148,252)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										28,529	(28,396)	(12,065)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest										(397,083)	(91,968)	(1,196,212)
Operating costs and expenses:
Cost of sales										2,533,153	2,689,818	3,597,299
Selling, general and administrative										289,521	281,547	287,349
Depreciation and amortization										158,368	176,946	177,755
Asset Impairment Charges	$ 345,000	$ 190,227							$ (597,603)	535,227	266,298	874,361
Restructuring Charges										40,069	42,177	36,182
Gain (Loss) on Disposition of Business										(30,741)	(19,124)	0
Gain (Loss) Related to Litigation Settlement										0	0	5,476
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment										(25,722)	0	(1,244)
Total operating costs and expenses										3,561,357	3,475,910	4,977,178
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Net sales										360,286	379,960	369,954
Operating income (loss)										(48,040)	26,562	(3,860)
Intercompany interest and charges										8,266	8,875	12,810
Interest expense and other										2,045	(6,671)	(3,148)
(Loss) income from continuing operations before income taxes										(58,351)	24,358	(13,522)
Income tax (benefit) expense										15,296	4,573	4,300
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(73,647)		(17,822)
Net income										(73,647)	19,785	(17,822)
Other Comprehensive Income (Loss), Net of Tax											(28,396)	(12,065)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										28,529
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest										(45,118)	(8,611)	(29,887)
Operating costs and expenses:
Cost of sales										288,916	303,845	315,876
Selling, general and administrative										31,694	31,920	36,565
Depreciation and amortization										16,829	16,728	21,373
Asset Impairment Charges										65,510	0	0
Restructuring Charges										5,377	905	0
Gain (Loss) on Disposition of Business										0	0
Gain (Loss) Related to Litigation Settlement												0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment										0		0
Total operating costs and expenses										408,326	353,398	373,814
Parent
Consolidating Financial Statements, Captions
Net sales										0	0	0
Operating income (loss)										(128,872)	(109,603)	(54,714)
Intercompany interest and charges										(159,038)	(183,115)	(206,998)
Interest expense and other										86,181	75,483	60,950
(Loss) income from continuing operations before income taxes										(56,015)	(1,971)	91,334
Income tax (benefit) expense										(17,619)	23,729	17,161
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(38,396)		74,173
Net income										(38,396)	(25,700)	74,173
Other Comprehensive Income (Loss), Net of Tax										(2,031)	5,073	(163)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest										(40,427)	(20,627)	74,010
Operating costs and expenses:
Cost of sales										0	0	0
Selling, general and administrative										102,733	66,822	43,969
Depreciation and amortization										1,851	1,461	1,642
Asset Impairment Charges										0	0	0
Restructuring Charges										19,269	22,196	10,347
Gain (Loss) on Disposition of Business										30,741	19,124
Gain (Loss) Related to Litigation Settlement												0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment										25,722		(1,244)
Total operating costs and expenses										128,872	109,603	54,714
Guarantors Subsidiaries
Consolidating Financial Statements, Captions
Net sales										2,918,508	3,229,136	3,577,733
Operating income (loss)										(185,494)	139,930	(1,032,532)
Intercompany interest and charges										150,772	174,240	194,188
Interest expense and other										11,216	11,689	10,239
(Loss) income from continuing operations before income taxes										(347,482)	(45,999)	(1,236,959)
Income tax (benefit) expense										(34,134)	(8,962)	(132,648)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(313,348)		(1,104,311)
Net income										(313,348)	(37,037)	(1,104,311)
Other Comprehensive Income (Loss), Net of Tax										1,810	(25,693)	(136,024)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest										(311,538)	(62,730)	(1,240,335)
Operating costs and expenses:
Cost of sales										2,324,080	2,462,270	3,343,038
Selling, general and administrative										155,094	182,805	206,815
Depreciation and amortization										139,688	158,757	154,740
Asset Impairment Charges										469,717	266,298	874,361
Restructuring Charges										15,423	19,076	25,835
Gain (Loss) on Disposition of Business										0	0
Gain (Loss) Related to Litigation Settlement												(5,476)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment										0		0
Total operating costs and expenses										3,104,002	3,089,206	4,610,265
Restructuring (SG&A) [Member]
Operating costs and expenses:
Restructuring Charges										40,069
Gain (Loss) on Disposition of Business										30,741
Restructuring Charges [Member]
Operating costs and expenses:
Restructuring Charges											42,177
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Net sales										(79,843)	(76,297)	(61,615)
Operating income (loss)										0	0	0
Intercompany interest and charges										0	0	0
Interest expense and other										0	0	0
(Loss) income from continuing operations before income taxes										0	0	0
Income tax (benefit) expense										0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										0		0
Net income										0	0	0
Other Comprehensive Income (Loss), Net of Tax										0	0	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest										0	0	0
Operating costs and expenses:
Cost of sales										(79,843)	(76,297)	(61,615)
Selling, general and administrative										0	0	0
Depreciation and amortization										0	0	0
Asset Impairment Charges										0	0	0
Restructuring Charges										0	0	0
Gain (Loss) on Disposition of Business										0	0
Gain (Loss) Related to Litigation Settlement												0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment										0		0
Total operating costs and expenses										$ (79,843)	$ (76,297)	$ (61,615)