Acquisitions and Divestitures	9 Months Ended
Jun. 30, 2018
Business Combinations [Abstract]
Acquisition and Divestitures	Acquisitions and Divestitures During the first nine months of fiscal 2018, the Company completed certain acquisitions for a combined purchase price of $24 million, all of which was paid as of June 30, 2018. The acquisitions in the aggregate were not material to the Company’s consolidated financial statements. In connection with the acquisitions, the Company recorded goodwill of $12 million within the Global Products segment. In the second quarter of fiscal 2018, the Company completed the sale of a certain Global Products business. The selling price was $103 million, all of which was received in the three months ended March 31, 2018. In connection with the sale, the Company reduced goodwill by $20 million and realized an insignificant gain. The divestiture was not material to the Company's consolidated financial statements. In the first quarter of fiscal 2018, the Company completed the sale of its Scott Safety business to 3M Company. The selling price, net of cash divested, was $2.0 billion, all of which was received as of December 31, 2017. In connection with the sale, the Company recorded a pre-tax gain of $114 million within selling, general and administrative expenses in the consolidated statements of income and reduced goodwill in assets held for sale by $1.2 billion. The gain, net of tax, recorded was $84 million. Net cash proceeds from the transaction of approximately $1.9 billion were used to repay a significant portion of the Tyco International Holding S.a.r.L.'s ("TSarl") $4.0 billion of merger-related debt. The Scott Safety business is included in the Global Products segment and was reported within assets and liabilities held for sale in the consolidated statements of financial position as of September 30, 2017. Refer to Note 4, "Discontinued Operations," of the notes to consolidated financial statements for further disclosure related to the Company's net assets held for sale. In the first nine months of fiscal 2017, the Company completed three acquisitions for a combined purchase price, net of cash acquired, of $9 million, $6 million of which was paid in the nine months ended June 30, 2017. The acquisitions in the aggregate were not material to the Company’s consolidated financial statements. In the second quarter of fiscal 2017, the Company completed the sale of its ADT security business in South Africa within the Building Solutions EMEA/LA segment. The selling price, net of cash divested, was $129 million, all of which was received in the nine months ended June 30, 2017. In connection with the sale, the Company reduced goodwill in assets held for sale by $92 million. The divestiture was not material to the Company's consolidated financial statements. In the first nine months of fiscal 2017, the Company completed one additional divestiture for a sales price of $4 million, all of which was received in the nine months ended June 30, 2017. The divestiture decreased the Company's ownership from a controlling to noncontrolling interest, and as a result, the Company deconsolidated cash of $5 million. The divestiture was not material to the Company's consolidated financial statements. In the first nine months of fiscal 2017, the Company received $52 million in net cash proceeds related to prior year business divestitures and paid $75 million related to prior year business acquisitions.

Acquisitions and Divestitures

During the first nine months of fiscal 2018, the Company completed certain acquisitions for a combined purchase price of $24 million, all of which was paid as of June 30, 2018. The acquisitions in the aggregate were not material to the Company’s consolidated financial statements. In connection with the acquisitions, the Company recorded goodwill of $12 million within the Global Products segment.

In the second quarter of fiscal 2018, the Company completed the sale of a certain Global Products business. The selling price was $103 million, all of which was received in the three months ended March 31, 2018. In connection with the sale, the Company reduced goodwill by $20 million and realized an insignificant gain. The divestiture was not material to the Company's consolidated financial statements.

In the first quarter of fiscal 2018, the Company completed the sale of its Scott Safety business to 3M Company. The selling price, net of cash divested, was $2.0 billion, all of which was received as of December 31, 2017. In connection with the sale, the Company recorded a pre-tax gain of $114 million within selling, general and administrative expenses in the consolidated statements of income and reduced goodwill in assets held for sale by $1.2 billion. The gain, net of tax, recorded was $84 million. Net cash proceeds from the transaction of approximately $1.9 billion were used to repay a significant portion of the Tyco International Holding S.a.r.L.'s ("TSarl") $4.0 billion of merger-related debt. The Scott Safety business is included in the Global Products segment and was reported within assets and liabilities held for sale in the consolidated statements of financial position as of September 30, 2017. Refer to Note 4, "Discontinued Operations," of the notes to consolidated financial statements for further disclosure related to the Company's net assets held for sale.

In the first nine months of fiscal 2017, the Company completed three acquisitions for a combined purchase price, net of cash acquired, of $9 million, $6 million of which was paid in the nine months ended June 30, 2017. The acquisitions in the aggregate were not material to the Company’s consolidated financial statements.

In the second quarter of fiscal 2017, the Company completed the sale of its ADT security business in South Africa within the Building Solutions EMEA/LA segment. The selling price, net of cash divested, was $129 million, all of which was received in the nine months ended June 30, 2017. In connection with the sale, the Company reduced goodwill in assets held for sale by $92 million. The divestiture was not material to the Company's consolidated financial statements.

In the first nine months of fiscal 2017, the Company completed one additional divestiture for a sales price of $4 million, all of which was received in the nine months ended June 30, 2017. The divestiture decreased the Company's ownership from a controlling to noncontrolling interest, and as a result, the Company deconsolidated cash of $5 million. The divestiture was not material to the Company's consolidated financial statements.

In the first nine months of fiscal 2017, the Company received $52 million in net cash proceeds related to prior year business divestitures and paid $75 million related to prior year business acquisitions.