SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Consolidating Financial Statements, Captions
Net sales	$ 917,417	$ 915,816	$ 2,808,444	$ 2,826,844
Operating costs and expenses:
Cost of sales	867,970	719,703	2,324,231	2,187,492
Selling, General and Administrative Expense	70,905	60,829	205,384	191,129
Depreciation and amortization	39,808	44,103	116,373	120,281
Restructuring Charges	0	4,841	3,193	7,285
Gain (Loss) Related to Litigation Settlement	0	0	(134,693)	0
Total operating costs and expenses	978,683	831,037	2,514,488	2,507,748
Operating Income (Loss)	(61,266)	84,779	293,956	319,096
Intercompany Interest and Charges	0	0	0	0
Interest expense and other	13,573	30,115	71,320	70,146
Income from continuing operations before income taxes	(74,839)	54,664	222,636	248,950
Income Tax Expense (Benefit)	(35,007)	19,271	66,778	84,998
Net Income (Loss) Attributable to Parent	(39,832)	35,393	155,858	163,952
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(19,616)	75,239	(32,822)	79,882
Total comprehensive income	(59,448)	110,632	123,036	243,834
Parent
Consolidating Financial Statements, Captions
Net sales	0	0	0	0
Operating costs and expenses:
Cost of sales	0	0	0	0
Selling, General and Administrative Expense	10,740	4,915	33,405	18,406
Depreciation and amortization	606	670	1,870	2,092
Restructuring Charges	0	0	0	7,285
Gain (Loss) Related to Litigation Settlement			(134,693)
Total operating costs and expenses	11,346	7,146	(99,418)	29,344
Operating Income (Loss)	(11,346)	(7,146)	99,418	(29,344)
Intercompany Interest and Charges	(51,017)	(54,402)	(156,650)	(165,147)
Interest expense and other	15,200	29,862	71,499	67,814
Income from continuing operations before income taxes	24,471	17,394	184,569	67,989
Income Tax Expense (Benefit)	1,966	4,491	53,702	16,024
Net Income (Loss) Attributable to Parent	22,505	12,903	130,867	51,965
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,311)	1,900	(1,395)	1,900
Total comprehensive income	21,194	14,803	129,472	53,865
Guarantors Subsidiaries
Consolidating Financial Statements, Captions
Net sales	838,709	860,029	2,590,724	2,687,881
Operating costs and expenses:
Cost of sales	798,245	676,668	2,141,533	2,081,123
Selling, General and Administrative Expense	51,240	49,353	146,886	154,103
Depreciation and amortization	34,971	40,755	103,545	111,815
Restructuring Charges	0	4,841	3,193	0
Gain (Loss) Related to Litigation Settlement			0
Total operating costs and expenses	884,456	771,617	2,395,157	2,347,041
Operating Income (Loss)	(45,747)	88,412	195,567	340,840
Intercompany Interest and Charges	48,546	52,359	150,218	160,890
Interest expense and other	2,356	1,346	6,900	4,910
Income from continuing operations before income taxes	(96,649)	34,707	38,449	175,040
Income Tax Expense (Benefit)	(35,311)	14,162	16,059	67,882
Net Income (Loss) Attributable to Parent	(61,338)	20,545	22,390	107,158
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,974)	75,731	(5,473)	77,604
Total comprehensive income	(63,312)	96,276	16,917	184,762
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Net sales	86,585	56,446	233,839	142,166
Operating costs and expenses:
Cost of sales	77,602	43,694	198,817	109,572
Selling, General and Administrative Expense	8,925	6,561	25,093	18,620
Depreciation and amortization	4,231	2,678	10,958	6,374
Restructuring Charges	0	0	0	0
Gain (Loss) Related to Litigation Settlement			0
Total operating costs and expenses	90,758	52,933	234,868	134,566
Operating Income (Loss)	(4,173)	3,513	(1,029)	7,600
Intercompany Interest and Charges	2,471	2,043	6,432	4,257
Interest expense and other	(3,983)	(1,093)	(7,079)	(2,578)
Income from continuing operations before income taxes	(2,661)	2,563	(382)	5,921
Income Tax Expense (Benefit)	(1,662)	618	(2,983)	1,092
Net Income (Loss) Attributable to Parent	(999)	1,945	2,601	4,829
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(16,331)	(2,392)	(25,954)	378
Total comprehensive income	(17,330)	(447)	(23,353)	5,207
Eliminations
Consolidating Financial Statements, Captions
Net sales	(7,877)	(659)	(16,119)	(3,203)
Operating costs and expenses:
Cost of sales	(7,877)	(659)	(16,119)	(3,203)
Selling, General and Administrative Expense	0	0	0	0
Depreciation and amortization	0	0		0
Restructuring Charges	0	0	0	0
Gain (Loss) Related to Litigation Settlement			0
Total operating costs and expenses	(7,877)	(659)	(16,119)	(3,203)
Operating Income (Loss)	0	0	0	0
Intercompany Interest and Charges	0	0	0	0
Interest expense and other	0	0	0	0
Income from continuing operations before income taxes	0	0	0	0
Income Tax Expense (Benefit)	0	0	0	0
Net Income (Loss) Attributable to Parent	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Total comprehensive income	$ 0	$ 0	$ 0	$ 0