Acquisition of NHUMO - Allocation of Purchase Price (Detail) (USD $) In Millions, unless otherwise specified			1 Months Ended	9 Months Ended
	Jun. 30, 2014	Sep. 30, 2013	Nov. 30, 2013 NHUMO [Member]	Jun. 30, 2014 NHUMO [Member]
Assets
Cash				$ 7
Accounts receivable				33
Inventories				14
Property, plant and equipment				48
Other non-current assets				1
Intangible assets				57
Goodwill	555	502		51
Total assets acquired				211
Liabilities
Current liabilities				(18)
Deferred tax liabilities				(31)
Total liabilities assumed				(49)
Net assets acquired				162
Cash consideration paid			80	80
Fair value of redeemable preferred stock	29		25	28
Previously held equity interest in NHUMO				54
Total				$ 162