Background, Merger And Basis Of Presentation	9 Months Ended
Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background, Merger and Basis of Presentation	Background, Merger and Basis of Presentation Background Avaya Inc. together with its consolidated subsidiaries (collectively, the “Company” or “Avaya”) is a leading provider of contact center, unified communications and networking products and services. The Company's products and services portfolio spans software, hardware, networking technology and professional services. The Company conducts its business operations in three segments. Two of those segments, Global Communications Solutions and Avaya Networking, make up Avaya's Enterprise Collaboration Solutions product portfolio. The third segment contains Avaya’s services portfolio and is called Avaya Global Services. The Company sells directly through its worldwide sales force and through its global network of channel partners. As of June 30, 2015, Avaya had approximately 11,300 channel partners, including distributors, service providers, dealers, value-added resellers, system integrators and business partners that provide sales and service support. Merger Avaya is a wholly owned subsidiary of Avaya Holdings Corp., a Delaware corporation (“Parent”). Parent was formed by affiliates of two private equity firms, Silver Lake Partners (“Silver Lake”) and TPG Capital (“TPG”) (collectively, the “Sponsors”). Silver Lake and TPG, through Parent, acquired Avaya in a transaction that was completed on October 26, 2007 (the “Merger”). Acquisition of the Enterprise Solutions Business of Nortel Networks Corporation On December 18, 2009, Avaya acquired certain assets and assumed certain liabilities of the enterprise solutions business (“NES”) of Nortel Networks Corporation out of bankruptcy court proceedings, for an adjusted purchase price of $933 million. The terms of the acquisition did not include any significant contingent consideration arrangements. Acquisition of RADVISION Ltd. On June 5, 2012, Avaya acquired RADVISION Ltd. (“Radvision”) for $230 million. Radvision is a global provider of videoconferencing and telepresence technologies over internet protocol (“IP”) and wireless networks. The terms of the acquisition did not include any significant contingent consideration arrangements. Divestiture of IT Professional Services Business On March 31, 2014, the Company completed the sale of its IT Professional Services (“ITPS”) business for a final sales price of $101 million, inclusive of $3 million of working capital adjustments and net of $2 million in costs to sell. See Note 4, “Divestiture - IT Professional Services Business,” for further details. Basis of Presentation The accompanying unaudited interim Consolidated Financial Statements as of June 30, 2015 and for the three and nine months ended June 30, 2015 and 2014 include the accounts of Avaya Inc. and its subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial statements, and should be read in conjunction with the Consolidated Financial Statements and other financial information for the fiscal year ended September 30, 2014, which were included in the Company’s Annual Report on Form 10-K filed with the SEC on November 26, 2014. The significant accounting policies used in preparing these unaudited interim Consolidated Financial Statements are the same as those described in Note 2 to those audited Consolidated Financial Statements except for recently adopted accounting guidance as discussed in Note 2 “Recent Accounting Pronouncements” of these unaudited interim Consolidated Financial Statements. In management’s opinion, these unaudited interim Consolidated Financial Statements reflect all adjustments, consisting of only normal and recurring adjustments, necessary for a fair statement of the financial condition, results of operations and cash flows for the periods indicated. The consolidated results of operations for the interim periods reported are not necessarily indicative of the results to be experienced for the entire fiscal year. As a result of the divestiture of the ITPS business, the results of operations and cash flows of this business have been classified as discontinued operations in all periods presented.

Background, Merger and Basis of Presentation

Background

Avaya Inc. together with its consolidated subsidiaries (collectively, the “Company” or “Avaya”) is a leading provider of contact center, unified communications and networking products and services. The Company's products and services portfolio spans software, hardware, networking technology and professional services. The Company conducts its business operations in three segments. Two of those segments, Global Communications Solutions and Avaya Networking, make up Avaya's Enterprise Collaboration Solutions product portfolio. The third segment contains Avaya’s services portfolio and is called Avaya Global Services.

The Company sells directly through its worldwide sales force and through its global network of channel partners. As of June 30, 2015, Avaya had approximately 11,300 channel partners, including distributors, service providers, dealers, value-added resellers, system integrators and business partners that provide sales and service support.

Merger

Avaya is a wholly owned subsidiary of Avaya Holdings Corp., a Delaware corporation (“Parent”). Parent was formed by affiliates of two private equity firms, Silver Lake Partners (“Silver Lake”) and TPG Capital (“TPG”) (collectively, the “Sponsors”). Silver Lake and TPG, through Parent, acquired Avaya in a transaction that was completed on October 26, 2007 (the “Merger”).

Acquisition of the Enterprise Solutions Business of Nortel Networks Corporation

On December 18, 2009, Avaya acquired certain assets and assumed certain liabilities of the enterprise solutions business (“NES”) of Nortel Networks Corporation out of bankruptcy court proceedings, for an adjusted purchase price of $933 million. The terms of the acquisition did not include any significant contingent consideration arrangements.

Acquisition of RADVISION Ltd.

On June 5, 2012, Avaya acquired RADVISION Ltd. (“Radvision”) for $230 million. Radvision is a global provider of videoconferencing and telepresence technologies over internet protocol (“IP”) and wireless networks. The terms of the acquisition did not include any significant contingent consideration arrangements.

Divestiture of IT Professional Services Business

On March 31, 2014, the Company completed the sale of its IT Professional Services (“ITPS”) business for a final sales price of $101 million, inclusive of $3 million of working capital adjustments and net of $2 million in costs to sell. See Note 4, “Divestiture - IT Professional Services Business,” for further details.

Basis of Presentation

The accompanying unaudited interim Consolidated Financial Statements as of June 30, 2015 and for the three and nine months ended June 30, 2015 and 2014 include the accounts of Avaya Inc. and its subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial statements, and should be read in conjunction with the Consolidated Financial Statements and other financial information for the fiscal year ended September 30, 2014, which were included in the Company’s Annual Report on Form 10-K filed with the SEC on November 26, 2014. The significant accounting policies used in preparing these unaudited interim Consolidated Financial Statements are the same as those described in Note 2 to those audited Consolidated Financial Statements except for recently adopted accounting guidance as discussed in Note 2 “Recent Accounting Pronouncements” of these unaudited interim Consolidated Financial Statements. In management’s opinion, these unaudited interim Consolidated Financial Statements reflect all adjustments, consisting of only normal and recurring adjustments, necessary for a fair statement of the financial condition, results of operations and cash flows for the periods indicated. The consolidated results of operations for the interim periods reported are not necessarily indicative of the results to be experienced for the entire fiscal year.

As a result of the divestiture of the ITPS business, the results of operations and cash flows of this business have been classified as discontinued operations in all periods presented.