Restructuring Charges/Other - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 2,000,000
Payments for restructuring	3,000,000
Restructuring accrual balance	29,000,000	$ 29,000,000	$ 32,000,000
Semiconductor Manufacturing Facilities In Greenock, Scotland
Restructuring Cost And Reserve [Line Items]
Restructuring charges	2,000,000	19,000,000
Severance and benefits cost	40,000,000	40,000,000
Payments for restructuring		0
Restructuring accrual balance	17,000,000	17,000,000	17,000,000
Prior actions
Restructuring Cost And Reserve [Line Items]
Restructuring accrual balance	$ 12,000,000	$ 12,000,000	$ 15,000,000