Condensed Consolidating Financial Statements of Guarantors of the Notes (Details 4) (USD $) In Thousands, unless otherwise specified	0 Months Ended		3 Months Ended								12 Months Ended
	Mar. 21, 2013	Mar. 01, 2011	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income			$ 43,461	$ 51,250	$ (10,401)	$ 45,171	$ 43,956	$ 41,239	$ 34,193	$ 27,083	$ 129,480	$ 146,471	$ 29,919
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Impairments and disposals of assets, net											5,269	764	2,104
Loss from discontinued operations							9,029	13,925	768	(674)		23,048	2,780
Depreciation of property, plant and equipment											64,883	58,311	55,589
Amortization of intangible assets											45,753	43,960	44,086
Foreign Currency Transaction Loss/(Gain)											(946)	(289)	64
Stock-based compensation											2,043	2,680	1,788
Amortization of financing fees											17,121	14,411	15,076
Write-off of financing fees	4,232	20,824									5,383	9,289	20,824
Allowance for doubtful accounts											(2,587)	297	5,468
Amortization of incremental inventory fair value											2,417		122,104
Inventory reserves											2,042	(2,652)	22,364
Deferred income taxes											5,293	(17,057)	(30,934)
Call premium on term loan											(15,075)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable											(4,696)	(22,380)	(9,692)
Inventories											(14,350)	(44,790)	(38,934)
Other assets											(3,733)	(2,147)	8,943
Accounts payable											45,753	16,097	28,101
Accrued expenses and other liabilities											27,526	5,491	3,082
Cash provided by operating activities of continuing operations											311,576	231,504	282,732
Cash provided by operating activities of discontinued operations												2,546	1,905
Net cash provided by operating activities											311,576	234,050	284,637
Cash flows from investing activities:
Purchase of property, plant and equipment											(129,220)	(86,314)	(43,999)
Proceeds from sale of building											7,548
Net proceeds from sale of discontinued operations												515
Cash paid for acquisitions, net of cash acquired											(82,473)		(3,987,809)
Cash used in investing activities of continuing operations											(204,145)	(85,799)	(4,031,808)
Cash used in investing activities of discontinued operations													(235)
Net cash used in investing activities											(204,145)	(85,799)	(4,032,043)
Cash flows from financing activities:
Principal payments under long-term debt agreements and capital leases											(603)	(229,375)	(13,554)
Payments of financing fees											(7,387)		(138,227)
Proceeds from borrowings under the revolver											80,000
Paydowns of borrowings under the revolver											(80,000)
Dividends paid											(216,926)
Proceeds from borrowings													2,400,000
Capital contribution												15	1,550,400
Cash (used in) provided by financing activities of continuing operations											(224,916)	(229,360)	3,798,619
Cash used in financing activities of discontinued operations													(381)
Net cash (used in) provided by financing activities											(224,916)	(229,360)	3,798,238
Effect of exchange rate changes on cash and cash equivalents											910	1,839	(2,909)
Net (decrease) increase in cash and cash equivalents											(116,575)	(79,270)	47,923
Change in cash for discontinued operations												1,071	3,734
Cash and cash equivalents at beginning of year						315,136				393,335	315,136	393,335	341,678
Cash and cash equivalents at end of year			198,561				315,136				198,561	315,136	393,335
Parent Company
Cash flows from operating activities:
Net income											129,480	146,471	29,919
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Equity in earnings of subsidiaries											(295,524)	(290,559)	(227,054)
Depreciation of property, plant and equipment											8,213	5,275	4,840
Foreign Currency Transaction Loss/(Gain)											(745)	(12)	(331)
Stock-based compensation											1,845	2,482	1,506
Amortization of financing fees											17,121	14,411	15,076
Write-off of financing fees											4,232	9,289	20,824
Call premium on term loan											(15,075)
Changes in operating assets and liabilities, net of acquisitions:
Intercompany accounts											378,035	279,288	321,271
Cash provided by operating activities of continuing operations												166,645	166,051
Net cash provided by operating activities											227,582	166,645	166,051
Cash flows from investing activities:
Purchase of property, plant and equipment											(35,186)	(20,287)	(1,652)
Proceeds from sale of building											7,548
Net proceeds from sale of discontinued operations												515
Cash paid for acquisitions, net of cash acquired											(77,936)		(3,983,806)
Cash used in investing activities of continuing operations													(3,985,458)
Net cash used in investing activities											(105,574)	(19,772)	(3,985,458)
Cash flows from financing activities:
Principal payments under long-term debt agreements and capital leases												(224,325)	(13,125)
Payments of financing fees											(7,387)		(138,227)
Proceeds from borrowings under the revolver											80,000
Paydowns of borrowings under the revolver											(80,000)
Dividends paid											(216,926)
Proceeds from borrowings													2,400,000
Capital contribution												15	1,550,400
Cash (used in) provided by financing activities of continuing operations													3,799,048
Net cash (used in) provided by financing activities											(224,313)	(224,310)	3,799,048
Net (decrease) increase in cash and cash equivalents											(102,305)	(77,437)	(20,359)
Cash and cash equivalents at beginning of year						183,661				261,098	183,661	261,098	281,457
Cash and cash equivalents at end of year			81,356				183,661				81,356	183,661	261,098
Guarantor Subsidiaries
Cash flows from operating activities:
Net income											170,364	199,395	168,576
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Impairments and disposals of assets, net											5,014	266	1,555
Depreciation of property, plant and equipment											40,124	37,603	36,211
Amortization of intangible assets											42,341	40,680	40,405
Stock-based compensation											72	72	179
Allowance for doubtful accounts											(2,587)	297	5,468
Amortization of incremental inventory fair value											2,417		83,952
Inventory reserves											2,042	(2,652)	22,364
Deferred income taxes											5,293	(23,852)	(30,934)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable											9,126	(18,843)	(10,132)
Inventories											185	(28,139)	(10,887)
Other assets											2,872	2,066	4,303
Accounts payable											42,331	14,220	25,261
Accrued expenses and other liabilities											9,062	(14,924)	(14,936)
Intercompany accounts											(243,709)	(153,706)	(297,364)
Cash provided by operating activities of continuing operations												52,483	24,021
Net cash provided by operating activities											84,947	52,483	24,021
Cash flows from investing activities:
Purchase of property, plant and equipment											(59,039)	(41,182)	(17,443)
Cash paid for acquisitions, net of cash acquired											(4,537)		(3,196)
Cash used in investing activities of continuing operations													(20,639)
Net cash used in investing activities											(63,576)	(41,182)	(20,639)
Cash flows from financing activities:
Principal payments under long-term debt agreements and capital leases											(603)		(429)
Cash (used in) provided by financing activities of continuing operations													(429)
Net cash (used in) provided by financing activities											(603)		(429)
Effect of exchange rate changes on cash and cash equivalents													335
Net (decrease) increase in cash and cash equivalents											20,768	11,301	3,288
Cash and cash equivalents at beginning of year						14,589				3,288	14,589	3,288
Cash and cash equivalents at end of year			35,357				14,589				35,357	14,589	3,288
Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net income											125,160	91,164	58,478
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Impairments and disposals of assets, net											255	498	549
Loss from discontinued operations												23,048	2,780
Depreciation of property, plant and equipment											16,546	15,433	14,538
Amortization of intangible assets											3,412	3,280	3,681
Foreign Currency Transaction Loss/(Gain)											(201)	(277)	395
Stock-based compensation											126	126	103
Amortization of incremental inventory fair value													38,152
Deferred income taxes												6,795
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable											(13,822)	(3,537)	440
Inventories											(3,053)	(16,651)	(28,047)
Other assets											(5,454)	(4,213)	4,640
Accounts payable											3,422	1,877	2,840
Accrued expenses and other liabilities											6,982	20,415	18,018
Intercompany accounts											(134,326)	(125,582)	(23,907)
Cash provided by operating activities of continuing operations												12,376	92,660
Cash provided by operating activities of discontinued operations												2,546	1,905
Net cash provided by operating activities											(953)	14,922	94,565
Cash flows from investing activities:
Purchase of property, plant and equipment											(34,995)	(24,845)	(24,904)
Cash paid for acquisitions, net of cash acquired													(807)
Cash used in investing activities of continuing operations													(25,711)
Cash used in investing activities of discontinued operations													(235)
Net cash used in investing activities											(34,995)	(24,845)	(25,946)
Cash flows from financing activities:
Principal payments under long-term debt agreements and capital leases												(5,050)
Cash used in financing activities of discontinued operations													(381)
Net cash (used in) provided by financing activities												(5,050)	(381)
Effect of exchange rate changes on cash and cash equivalents											910	1,839	(3,244)
Net (decrease) increase in cash and cash equivalents											(35,038)	(13,134)	64,994
Change in cash for discontinued operations												1,071	3,734
Cash and cash equivalents at beginning of year						116,886				128,949	116,886	128,949	60,221
Cash and cash equivalents at end of year			81,848				116,886				81,848	116,886	128,949
Eliminations
Cash flows from operating activities:
Net income											(295,524)	(290,559)	(227,054)
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Equity in earnings of subsidiaries											$ 295,524	$ 290,559	$ 227,054