Financial Information by Segment - Royalties Paid by Equity Affiliates, External Shipping and Handling Fees, Impact of Corporate Adjustment for Unearned Revenue and Notes Receivable Reflected by Unallocated and Other (Parenthetical) (Detail)	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting [Abstract]
Percentage of sale of an equity method affiliate	100.00%	100.00%	100.00%	100.00%