Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011	Apr. 02, 2011	Sep. 30, 2010
Current assets:
Cash and cash equivalents	$ 122.4	$ 130.9	$ 128.7	$ 88.1
Accounts receivable, net	899.0	323.5	1,142.3
Accounts receivable, pledged	234.2	0	0
Inventories	601.6	387.0	556.1
Prepaid and other current assets	169.4	151.1	164.5
Total current assets	2,026.6	992.5	1,991.6
Property, plant and equipment, net	387.8	394.7	396.1
Goodwill	309.1	309.1	305.8
Intangible assets, net	311.8	319.6	344.7
Other assets	34.4	36.3	36.4
Equity investment in subsidiaries	0	0	0
Intercompany assets	0	0	0
Total assets	3,069.7	2,052.2	3,074.6
Current liabilities:
Current portion of debt	227.8	3.2	764.6
Accounts payable	346.1	150.0	365.9
Other current liabilities	438.5	315.4	508.5
Total current liabilities	1,012.4	468.6	1,639.0
Long-term debt	1,241.2	791.8	416.0
Other liabilities	226.4	232.0	231.0
Equity investment in subsidiaries	0	0	0
Intercompany liabilities	0	0	0
Total liabilities	2,480.0	1,492.4	2,286.0
Shareholders' equity	589.7	559.8	788.6
Total liabilities and shareholders' equity	3,069.7	2,052.2	3,074.6
Parent
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0	0
Accounts receivable, pledged	0
Inventories	0	0	0
Prepaid and other current assets	0	0	0
Total current assets	0	0	0
Property, plant and equipment, net	0	0	0
Goodwill	0	0	0
Intangible assets, net	0	0	0
Other assets	31.3	33.1	15.4
Equity investment in subsidiaries	825.4	794.3	1,031.1
Intercompany assets	1,004.1	553.7	922.8
Total assets	1,860.8	1,381.1	1,969.3
Current liabilities:
Current portion of debt	0	0	762.5
Accounts payable	0	0	0
Other current liabilities	14.1	17.2	8.0
Total current liabilities	14.1	17.2	770.5
Long-term debt	1,237.1	787.2	400.0
Other liabilities	19.9	16.9	10.2
Equity investment in subsidiaries	0	0	0
Intercompany liabilities	0	0	0
Total liabilities	1,271.1	821.3	1,180.7
Shareholders' equity	589.7	559.8	788.6
Total liabilities and shareholders' equity	1,860.8	1,381.1	1,969.3
Subsidiary Guarantors
Current assets:
Cash and cash equivalents	17.3	4.3	10.4	5.0
Accounts receivable, net	640.6	248.2	876.8
Accounts receivable, pledged	234.2
Inventories	481.1	313.7	452.4
Prepaid and other current assets	121.0	107.9	121.0
Total current assets	1,494.2	674.1	1,460.6
Property, plant and equipment, net	337.3	347.3	348.0
Goodwill	308.4	308.4	305.1
Intangible assets, net	264.9	270.3	289.8
Other assets	13.2	13.3	24.8
Equity investment in subsidiaries	0	0	0
Intercompany assets	168.2	115.4	11.2
Total assets	2,586.2	1,728.8	2,439.5
Current liabilities:
Current portion of debt	224.3	2.8	413.3
Accounts payable	266.3	103.9	283.8
Other current liabilities	299.3	202.5	357.4
Total current liabilities	789.9	309.2	1,054.5
Long-term debt	654.1	261.3	16.0
Other liabilities	201.0	205.6	203.5
Equity investment in subsidiaries	286.1	328.7	304.6
Intercompany liabilities	0	0	0
Total liabilities	1,931.1	1,104.8	1,578.6
Shareholders' equity	655.1	624.0	860.9
Total liabilities and shareholders' equity	2,586.2	1,728.8	2,439.5
Non-Guarantors
Current assets:
Cash and cash equivalents	105.1	126.6	118.3	83.1
Accounts receivable, net	258.4	75.3	265.5
Accounts receivable, pledged	0
Inventories	120.5	73.3	103.7
Prepaid and other current assets	48.4	43.2	43.5
Total current assets	532.4	318.4	531.0
Property, plant and equipment, net	50.5	47.4	48.1
Goodwill	0.7	0.7	0.7
Intangible assets, net	46.9	49.3	54.9
Other assets	27.6	27.6	43.3
Equity investment in subsidiaries	0	0	0
Intercompany assets	0	0	0
Total assets	658.1	443.4	678.0
Current liabilities:
Current portion of debt	3.5	0.4	351.3
Accounts payable	79.8	46.1	82.1
Other current liabilities	125.1	95.7	143.1
Total current liabilities	208.4	142.2	576.5
Long-term debt	187.1	130.5	0
Other liabilities	43.2	47.2	64.4
Equity investment in subsidiaries	0	0	0
Intercompany liabilities	335.2	281.9	171.5
Total liabilities	773.9	601.8	812.4
Shareholders' equity	(115.8)	(158.4)	(134.4)
Total liabilities and shareholders' equity	658.1	443.4	678.0
Eliminations
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0	0
Accounts receivable, pledged	0
Inventories	0	0	0
Prepaid and other current assets	0	0	0
Total current assets	0	0	0
Property, plant and equipment, net	0	0	0
Goodwill	0	0	0
Intangible assets, net	0	0	0
Other assets	(37.7)	(37.7)	(47.1)
Equity investment in subsidiaries	(825.4)	(794.3)	(1,031.1)
Intercompany assets	(1,172.3)	(669.1)	(934.0)
Total assets	(2,035.4)	(1,501.1)	(2,012.2)
Current liabilities:
Current portion of debt	0	0	(762.5)
Accounts payable	0	0	0
Other current liabilities	0	0	0
Total current liabilities	0	0	(762.5)
Long-term debt	(837.1)	(387.2)	0
Other liabilities	(37.7)	(37.7)	(47.1)
Equity investment in subsidiaries	(286.1)	(328.7)	(304.6)
Intercompany liabilities	(335.2)	(281.9)	(171.5)
Total liabilities	(1,496.1)	(1,035.5)	(1,285.7)
Shareholders' equity	(539.3)	(465.6)	(726.5)
Total liabilities and shareholders' equity	$ (2,035.4)	$ (1,501.1)	$ (2,012.2)