Condensed, Consolidating Statement of Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Net sales	$ 401.2	$ 1,054.9	$ 1,170.4	$ 199.6	$ 403.1	$ 1,048.0	$ 1,122.9	$ 225.7	$ 2,826.1	$ 2,799.7	$ 2,873.0
Cost of sales									1,864.4	1,769.0	1,784.4
Cost of sales-impairment, restructuring and other charges									0	18.3	0
Cost of sales-product registration and recall matters									(0.4)	(3.2)	(3.0)
Gross profit	105.0	369.0	461.7	25.6	95.5	400.1	463.8	49.8	961.3	1,009.2	1,085.6
Operating expenses:
Selling, general and administrative									705.7	686.3	692.6
Impairment, restructuring and other charges		0.4	5.0	2.5	52.3	3.6			7.1	37.6	18.5
Product registration and recall matters	0.4	4.0	3.5	0.3	3.6	6.8	2.5	1.7	7.8	11.4	5.7
Other (income) expense, net									(2.9)	(0.9)	(5.6)
Income (loss) from operations									243.6	274.8	374.4
Equity income in subsidiaries									0
Other Nonoperating Income									0
Costs related to refinancing									0	1.2	0
Interest expense									61.8	51.0	43.2
Income (loss) from continuing operations before income taxes									181.8	222.6	331.2
Income tax expense from continuing operations									68.6	82.7	123.5
Income (loss) from continuing operations	(36.6)	96.4	126.5	(73.1)	(62.0)	118.4	149.4	(65.9)	113.2	139.9	207.7
Income (loss) from discontinued operations									(6.7)	(28.0)	3.6
Net income (loss)	(40.1)	93.3	127.2	(73.9)	(53.4)	111.6	177.6	(67.9)	106.5	167.9	204.1
Parent
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Net sales									0
Cost of sales									0
Cost of sales-impairment, restructuring and other charges									0
Cost of sales-product registration and recall matters									0
Gross profit									0
Operating expenses:
Selling, general and administrative									0
Impairment, restructuring and other charges									0
Product registration and recall matters									0
Other (income) expense, net									0
Income (loss) from operations									0
Equity income in subsidiaries									(126.4)	(186.8)	(212.5)
Other Nonoperating Income									(24.5)	(19.4)	(24.0)
Costs related to refinancing										1.2
Interest expense									56.5	48.1	37.7
Income (loss) from continuing operations before income taxes									94.4	156.9	198.8
Income tax expense from continuing operations									(12.1)	(11.0)	(5.3)
Income (loss) from continuing operations									106.5	167.9	204.1
Income (loss) from discontinued operations									0
Net income (loss)									106.5	167.9	204.1
Subsidiary Guarantors
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Net sales									2,320.9	2,276.6	2,404.2
Cost of sales									1,511.2	1,422.9	1,468.1
Cost of sales-impairment, restructuring and other charges									0	17.3
Cost of sales-product registration and recall matters									(0.4)	(3.2)	(3.0)
Gross profit									809.3	833.2	933.1
Operating expenses:
Selling, general and administrative									553.4	523.9	574.2
Impairment, restructuring and other charges									7.9	34.1	18.2
Product registration and recall matters									7.8	11.4	5.7
Other (income) expense, net									(1.1)	(0.5)	(4.7)
Income (loss) from operations									241.3	264.3	339.7
Equity income in subsidiaries									1.3	(41.6)	(21.9)
Other Nonoperating Income									0
Costs related to refinancing
Interest expense									25.4	20.0	24.8
Income (loss) from continuing operations before income taxes									214.6	285.9	336.8
Income tax expense from continuing operations									81.5	90.6	117.1
Income (loss) from continuing operations									133.1	195.3	219.7
Income (loss) from discontinued operations									(6.7)	8.5	7.2
Net income (loss)									126.4	186.8	212.5
Non-Guarantors
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Net sales									505.2	523.1	468.8
Cost of sales									353.2	346.1	316.3
Cost of sales-impairment, restructuring and other charges									0	1.0
Cost of sales-product registration and recall matters									0
Gross profit									152.0	176.0	152.5
Operating expenses:
Selling, general and administrative									152.3	162.4	118.4
Impairment, restructuring and other charges									(0.8)	3.5	0.3
Product registration and recall matters									0
Other (income) expense, net									(1.8)	(0.4)	(0.9)
Income (loss) from operations									2.3	10.5	34.7
Equity income in subsidiaries									0
Other Nonoperating Income									0
Costs related to refinancing
Interest expense									4.4	2.3	4.7
Income (loss) from continuing operations before income taxes									(2.1)	8.2	30.0
Income tax expense from continuing operations									(0.8)	3.1	11.7
Income (loss) from continuing operations									(1.3)	5.1	18.3
Income (loss) from discontinued operations									0	(36.5)	(3.6)
Net income (loss)									(1.3)	41.6	21.9
Eliminations
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Net sales									0
Cost of sales									0
Cost of sales-impairment, restructuring and other charges									0
Cost of sales-product registration and recall matters									0
Gross profit									0
Operating expenses:
Selling, general and administrative									0
Impairment, restructuring and other charges									0
Product registration and recall matters									0
Other (income) expense, net									0
Income (loss) from operations									0
Equity income in subsidiaries									125.1	228.4	234.4
Other Nonoperating Income									24.5	19.4	24.0
Costs related to refinancing
Interest expense									(24.5)	(19.4)	(24.0)
Income (loss) from continuing operations before income taxes									(125.1)	(228.4)	(234.4)
Income tax expense from continuing operations									0
Income (loss) from continuing operations									(125.1)	(228.4)	(234.4)
Income (loss) from discontinued operations									0
Net income (loss)									$ (125.1)	$ (228.4)	$ (234.4)