CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) - Summary of consolidated statement of operations and comprehensive income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Condensed Income Statements, Captions [Line Items]
Revenue	$ 525,627	$ 505,039	$ 507,687	$ 453,458	$ 449,009	$ 509,826	$ 488,743	$ 423,749	$ 1,991,811	$ 1,871,327	$ 1,861,145
Cost of goods and services									1,532,412	1,453,742	1,442,340
Gross profit	125,602	118,307	109,987	105,503	106,107	108,311	105,497	97,670	459,399	417,585	418,805
Selling, general and administrative expenses									375,099	340,469	341,696
Restructuring and other related charges									6,136	13,262	4,689
Total operating expenses									381,235	353,731	346,385
Income from operations									78,164	63,854	72,420
Other income (expense)
Interest income (expense), net									(48,144)	(52,167)	(51,715)
Loss from debt extinguishment			(24,964)						(38,890)	0	0
Other, net									3,154	2,646	1,236
Total other income (expense)									(83,880)	(49,521)	(50,479)
Income (loss) before taxes									(5,716)	14,333	21,941
Provision (benefit) for income taxes									(5,539)	7,543	4,930
Income (loss) before equity in net income of subsidiaries									(177)	6,790	17,011
Equity in net income (loss) of subsidiaries									0	0	0
Income (loss) from continuing operations									(177)	6,790	17,011
Loss from operations of discontinued businesses									0	(4,651)	0
Benefit from income taxes									0	1,628	0
Loss from discontinued operations									0	(3,023)	0
Net income (loss)	7,948	14,464	(25,825)	3,236	425	3,603	(819)	558	(177)	3,767	17,011
Comprehensive income (loss)									(26,902)	19,987	5,176
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Cost of goods and services									0	0	0
Gross profit									0	0	0
Selling, general and administrative expenses									24,248	24,248	18,982
Restructuring and other related charges									0	0	0
Total operating expenses									24,248	24,248	18,982
Income from operations									(24,084)	(24,248)	(18,982)
Other income (expense)
Interest income (expense), net									(10,079)	(14,381)	(14,541)
Loss from debt extinguishment									(38,890)
Other, net									111	569	13
Total other income (expense)									(48,858)	(13,812)	(14,528)
Income (loss) before taxes									(72,942)	(38,060)	(33,510)
Provision (benefit) for income taxes									(32,044)	(14,888)	(20,363)
Income (loss) before equity in net income of subsidiaries									(40,898)	(23,172)	(13,147)
Equity in net income (loss) of subsidiaries									40,721	26,939	30,158
Income (loss) from continuing operations									(177)	3,767
Loss from operations of discontinued businesses									0	0
Benefit from income taxes									0	0
Loss from discontinued operations									0	0
Net income (loss)									(177)	3,767	17,011
Comprehensive income (loss)									372	4,653	16,392
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenue									1,526,678	1,459,705	1,414,910
Cost of goods and services									1,156,268	1,107,440	1,060,183
Gross profit									370,410	352,265	354,727
Selling, general and administrative expenses									281,930	269,654	267,677
Restructuring and other related charges									4,234	9,236	4,674
Total operating expenses									286,164	278,890	272,351
Income from operations									84,246	73,375	82,376
Other income (expense)
Interest income (expense), net									(28,630)	(27,660)	(25,183)
Loss from debt extinguishment									0
Other, net									7,945	9,656	9,484
Total other income (expense)									(20,685)	(18,004)	(15,699)
Income (loss) before taxes									63,561	55,371	66,677
Provision (benefit) for income taxes									26,480	20,603	25,366
Income (loss) before equity in net income of subsidiaries									37,081	34,768	41,311
Equity in net income (loss) of subsidiaries									3,531	(1,467)	(11,007)
Income (loss) from continuing operations									40,612	33,301
Loss from operations of discontinued businesses									0	0
Benefit from income taxes									0	0
Loss from discontinued operations									0	0
Net income (loss)									40,612	33,301	30,304
Comprehensive income (loss)									28,355	10,903	50,081
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenue									519,349	463,767	499,860
Cost of goods and services									424,568	392,588	428,760
Gross profit									94,781	71,179	71,100
Selling, general and administrative expenses									75,551	52,819	62,564
Restructuring and other related charges									1,902	4,026	15
Total operating expenses									77,453	56,845	62,579
Income from operations									17,328	14,334	8,521
Other income (expense)
Interest income (expense), net									(9,435)	(10,126)	(11,991)
Loss from debt extinguishment									0
Other, net									(4,228)	(7,233)	(7,756)
Total other income (expense)									(13,663)	(17,359)	(19,747)
Income (loss) before taxes									3,665	(3,025)	(11,226)
Provision (benefit) for income taxes									25	1,781	(73)
Income (loss) before equity in net income of subsidiaries									3,640	(4,806)	(11,153)
Equity in net income (loss) of subsidiaries									37,081	34,768	41,311
Income (loss) from continuing operations									40,721	29,962
Loss from operations of discontinued businesses									0	(4,651)
Benefit from income taxes									0	1,628
Loss from discontinued operations									0	(3,023)
Net income (loss)									40,721	26,939	30,158
Comprehensive income (loss)									25,704	64,671	(835)
Elimination [Member]
Condensed Income Statements, Captions [Line Items]
Revenue									(54,216)	(52,145)	(53,625)
Cost of goods and services									(48,424)	(46,286)	(46,603)
Gross profit									(5,792)	(5,859)	(7,022)
Selling, general and administrative expenses									(6,466)	(6,252)	(7,527)
Restructuring and other related charges									0	0	0
Total operating expenses									(6,466)	(6,252)	(7,527)
Income from operations									674	393	505
Other income (expense)
Interest income (expense), net									0	0	0
Loss from debt extinguishment									0
Other, net									(674)	(346)	(505)
Total other income (expense)									(674)	(346)	(505)
Income (loss) before taxes									0	47	0
Provision (benefit) for income taxes									0	47	0
Income (loss) before equity in net income of subsidiaries									0	0	0
Equity in net income (loss) of subsidiaries									(81,333)	(60,240)	(60,462)
Income (loss) from continuing operations									(81,333)	(60,240)
Loss from operations of discontinued businesses									0	0
Benefit from income taxes									0	0
Loss from discontinued operations									0	0
Net income (loss)									(81,333)	(60,240)	(60,462)
Comprehensive income (loss)									$ (81,333)	$ (60,240)	$ (60,462)