Acquisitions - Additional Information (Detail) (USD $)	1 Months Ended		12 Months Ended		0 Months Ended		12 Months Ended
	Jul. 31, 2012	Sep. 30, 2013	Sep. 30, 2013 NHUMO [Member]	Jun. 30, 2013 NHUMO [Member]	Nov. 15, 2013 Subsequent Event [Member] NHUMO [Member]	Sep. 30, 2013 Trademarks, Indefinite Lives [Member]	Sep. 30, 2013 Customer Relationships [Member]	Sep. 30, 2013 Developed Technology [Member]
Business Acquisition [Line Items]
Acquisition paying	$ 1,100,000,000
Intangible assets							110,000,000	150,000,000
Intangible assets						57,000,000
Amortized period							18 years	20 years
Fair value of the assets acquired includes trade receivables		46,000,000
Percentage acquisition				60.00%
Cash paid on acquisition					80,000,000
Preferred stock redemption amount					25,000,000
Dividend percentage of preferred stock					6.00%
Preferred stock issued on acquisition					$ 25,000,000
Acquisition date			Nov. 15, 2013