Acquisitions and Divestitures (Notes)	12 Months Ended
Acquisitions and Divestitures (Notes)	Sep. 30, 2019
Disclosure Acquisitions And Divestitures [Abstract]
ACQUISITIONS AND DIVESTITURES	ACQUISITIONS AND DIVESTITURES Fiscal Year 2019 On April 30, 2019, the Company completed the sale of its Power Solutions business to BCP Acquisitions LLC for a purchase price of $13.2 billion. The net cash proceeds after tax and transaction-related expenses were $11.6 billion. In connection with the sale, the Company recorded a gain, net of transaction and other costs, of $5.2 billion ($4.0 billion after tax), subject to post-closing working capital and net debt adjustments, within income from discontinued operations, net of tax, in the consolidated statements of income. During the first quarter of fiscal 2019, the Company determined that its Power Solutions business met the criteria to be classified as a discontinued operation and, as a result, Power Solutions' historical financial results are reflected in the Company's consolidated financial statements as a discontinued operation. Refer to Note 3, "Discontinued Operations," of the notes to consolidated financial statements for further disclosure related to the Company's discontinued operations. During fiscal 2019, the Company completed certain divestitures within the Global Products and Building Solutions EMEA/LA businesses. The combined selling price was $18 million, $16 million of which was received as of September 30, 2019. In connection with the sale, the Company reduced goodwill by $1 million within the Building Solutions EMEA/LA segment. The divestitures were not material to the Company's consolidated financial statements. During fiscal 2019, the Company completed certain acquisitions for a combined purchase price of $32 million, $25 million of which was paid as of September 30, 2019. The acquisitions were not material to the Company's consolidated financial statements. In connection with the acquisitions, the Company recorded goodwill of $11 million within the Global Products segment, $8 million within the Building Solutions Asia Pacific segment, and $6 million within the Building Solutions EMEA/LA segment. Fiscal Year 2018 During fiscal 2018, the Company completed certain acquisitions for a combined purchase price, net of cash acquired, of $21 million, all of which was paid as of September 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 $14 million within the Global Products segment and $1 million within the Building Solutions EMEA/LA segment. 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 September 30, 2018. 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. Also during fiscal 2018, the Company completed certain divestitures primarily within the Global Products business. The combined selling price was $204 million, all of which was received as of September 30, 2018. In connection with the divestitures, the Company reduced goodwill by $35 million. The divestitures were not material to the Company's consolidated financial statements. Fiscal Year 2017 During 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 as of September 30, 2017. 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 $2 million. 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 as of September 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. During fiscal 2017, the Company completed two divestitures for a combined selling price, net of cash divested, of $44 million, of which $40 million was received as of September 30, 2017. The divestitures were not material to the Company's consolidated financial statements. In connection with the divestitures, the Company reduced goodwill by $19 million and $2 million in the Global Products segment and in the Building Solutions Asia Pacific segment, respectively. During fiscal 2017, the Company completed one additional divestiture for a sales price of $4 million, all of which was received as of September 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. During 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.