Other Current Liabilities (Details 1) (USD $) In Millions, unless otherwise specified	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]
Total product warranties – beginning of period	$ 51us-gaap_ProductWarrantyAccrual	$ 57us-gaap_ProductWarrantyAccrual
Accruals for product warranties	7	9
Payments	(9)us-gaap_ProductWarrantyAccrualPayments	(12)us-gaap_ProductWarrantyAccrualPayments
Change in estimates and other	0	3
Total product warranties – end of period	49us-gaap_ProductWarrantyAccrual	57us-gaap_ProductWarrantyAccrual
Less: Non-current product warranties	(26)	(33)	(24)
Product warranties – current	$ 23	$ 24	$ 27

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

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Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

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Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

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Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

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