Income Taxes	6 Months Ended
Mar. 29, 2019
Income Taxes
Income Taxes	11. Income Taxes We recorded income tax expense of $91 million and $108 million for the quarters ended March 29, 2019 and March 30, 2018, respectively. The income tax expense for the quarter ended March 29, 2019 included $15 million of income tax expense associated with the tax impacts of certain legal entity restructurings and intercompany transactions, partially offset by a $12 million income tax benefit resulting from lapses of statutes of limitations in certain non-U.S. jurisdictions. The income tax expense for the quarter ended March 30, 2018 included a $17 million income tax benefit resulting from lapses of statutes of limitations in certain non-U.S. jurisdictions. We recorded income tax expense of $169 million and $707 million for the six months ended March 29, 2019 and March 30, 2018, respectively. The income tax expense for the six months ended March 29, 2019 included $15 million of income tax expense associated with the tax impacts of certain legal entity restructurings and intercompany transactions. The income tax expense for the six months ended March 30, 2018 included $567 million of income tax expense related to the tax impacts of the Tax Cuts and Jobs Act (the “Act”) and a $61 million net income tax benefit related to certain legal entity restructurings. During the quarter ended December 29, 2017, the period of enactment of the Act, we were required to revalue our U.S. federal deferred tax assets and liabilities at a U.S. federal corporate income tax rate of 21% and we recorded income tax expense of $567 million primarily in connection with the write-down of our U.S. federal deferred tax asset for net operating loss and interest carryforwards. Included in the expense of $567 million was an income tax benefit of $34 million related to the reduction in the existing valuation allowance recorded against certain U.S. federal tax credit carryforwards. Although it is difficult to predict the timing or results of our worldwide examinations, we estimate that approximately $130 million of unrecognized income tax benefits, excluding the impact relating to accrued interest and penalties, could be resolved within the next twelve months. We are not aware of any other matters that would result in significant changes to the amount of unrecognized income tax benefits reflected on the Condensed Consolidated Balance Sheet as of March 29, 2019. Tax Sharing Agreement Under a Tax Sharing Agreement, we, Tyco International plc (“Tyco International”), and Covidien plc (“Covidien”) share 31%, 27%, and 42%, respectively, of income tax liabilities that arise from adjustments made by tax authorities to the collective income tax returns for periods prior to and including June 29, 2007. Pursuant to the Tax Sharing Agreement, we entered into certain guarantee commitments and indemnifications with Tyco International and Covidien. As a result of subsequent transactions, Tyco International and Covidien now operate as part of Johnson Controls International plc and Medtronic plc, respectively. We have substantially settled all U.S. federal income tax matters with the Internal Revenue Service for periods covered under the Tax Sharing Agreement. Certain shared U.S. state and non-U.S. income tax matters remain open. We do not expect these matters will have a material effect on our results of operations, financial position, or cash flows.

11. Income Taxes

We recorded income tax expense of $91 million and $108 million for the quarters ended March 29, 2019 and March 30, 2018, respectively. The income tax expense for the quarter ended March 29, 2019 included $15 million of income tax expense associated with the tax impacts of certain legal entity restructurings and intercompany transactions, partially offset by a $12 million income tax benefit resulting from lapses of statutes of limitations in certain non-U.S. jurisdictions. The income tax expense for the quarter ended March 30, 2018 included a $17 million income tax benefit resulting from lapses of statutes of limitations in certain non-U.S. jurisdictions.

We recorded income tax expense of $169 million and $707 million for the six months ended March 29, 2019 and March 30, 2018, respectively. The income tax expense for the six months ended March 29, 2019 included $15 million of income tax expense associated with the tax impacts of certain legal entity restructurings and intercompany transactions. The income tax expense for the six months ended March 30, 2018 included $567 million of income tax expense related to the tax impacts of the Tax Cuts and Jobs Act (the “Act”) and a $61 million net income tax benefit related to certain legal entity restructurings. During the quarter ended December 29, 2017, the period of enactment of the Act, we were required to revalue our U.S. federal deferred tax assets and liabilities at a U.S. federal corporate income tax rate of 21% and we recorded income tax expense of $567 million primarily in connection with the write-down of our U.S. federal deferred tax asset for net operating loss and interest carryforwards. Included in the expense of $567 million was an income tax benefit of $34 million related to the reduction in the existing valuation allowance recorded against certain U.S. federal tax credit carryforwards.

Although it is difficult to predict the timing or results of our worldwide examinations, we estimate that approximately $130 million of unrecognized income tax benefits, excluding the impact relating to accrued interest and penalties, could be resolved within the next twelve months.

We are not aware of any other matters that would result in significant changes to the amount of unrecognized income tax benefits reflected on the Condensed Consolidated Balance Sheet as of March 29, 2019.

Tax Sharing Agreement

Under a Tax Sharing Agreement, we, Tyco International plc (“Tyco International”), and Covidien plc (“Covidien”) share 31%, 27%, and 42%, respectively, of income tax liabilities that arise from adjustments made by tax authorities to the collective income tax returns for periods prior to and including June 29, 2007. Pursuant to the Tax Sharing Agreement, we entered into certain guarantee commitments and indemnifications with Tyco International and Covidien. As a result of subsequent transactions, Tyco International and Covidien now operate as part of Johnson Controls International plc and Medtronic plc, respectively. We have substantially settled all U.S. federal income tax matters with the Internal Revenue Service for periods covered under the Tax Sharing Agreement. Certain shared U.S. state and non-U.S. income tax matters remain open. We do not expect these matters will have a material effect on our results of operations, financial position, or cash flows.