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Restructuring and Impairment Charges	3 Months Ended
Restructuring and Impairment Charges	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure	Restructuring and Impairment Charges The Company recorded $81 million of restructuring and impairment charges in the prior-year quarter for an investment impairment and contract termination and severance costs.