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Valuation and Qualifying Accounts | 12 Months Ended
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Sep. 30, 2017
Valuation and Qualifying Accounts [Abstract] |
VALUATION AND QUALIFYING ACCOUNTS | JOHNSON CONTROLS INTERNATIONAL PLC AND SUBSIDIARIES SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (In millions)
Year Ended September 30, | 2017 |  | 2016 |  | 2015
Accounts Receivable - Allowance for Doubtful Accounts |  |  |  |  |
Balance at beginning of period | $ | 173 |  |  | $ | 70 |  |  | $ | 64 |
Provision charged to costs and expenses | 39 |  |  | 45 |  |  | 27 |
Reserve adjustments | (9 | ) |  | (8 | ) |  | (5 | )
Accounts charged off | (41 | ) |  | (25 | ) |  | (16 | )
Acquisition of businesses | 18 |  |  | 91 |  |  | 1 |
Currency translation | 2 |  |  | — |  |  | (1 | )
Balance at end of period | $ | 182 |  |  | $ | 173 |  |  | $ | 70 |
Deferred Tax Assets - Valuation Allowance |  |  |  |  |
Balance at beginning of period | $ | 3,400 |  |  | $ | 1,151 |  |  | $ | 1,111 |
Allowance provision for new operating and other loss carryforwards | 542 |  |  | 121 |  |  | 23 |
Allowance provision benefits | (157 | ) |  | (331 | ) |  | 17 |
Acquisition of businesses | 53 |  |  | 2,459 |  |  | — |
Balance at end of period | $ | 3,838 |  |  | $ | 3,400 |  |  | $ | 1,151 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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