Income Taxes	6 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Unrecognized Tax Benefits During the second quarter of fiscal year 2016, the Company increased its unrecognized tax benefits and reduced additional paid-in capital by approximately $58 million associated with certain pre-Separation intercompany transactions which potentially impact NOL carryforwards. Refer to Note 5 for a discussion. The Company's uncertain tax positions relate to tax years that remain subject to audit by the taxing authorities in the U.S. federal, state and local, and foreign jurisdictions. Based on the current status of its income tax audits, the Company does not believe that the balance of its unrecognized tax benefits will be resolved in the next twelve months. The resolution of certain components of the Company's uncertain tax positions may be partially offset by an adjustment to the receivable from Tyco, which was recorded pursuant to the 2012 Tax Sharing Agreement. Refer to Note 7 for more information on the 2012 Tax Sharing Agreement, as defined therein. Effective Tax Rate The Company's income tax expense for the quarter and six months ended March 31, 2016 totaled $28 million and $56 million, respectively, resulting in an effective tax rate for the periods of 31.1% and 30.8% respectively. The Company's income tax expense for the quarter and six months ended March 27, 2015 totaled $32 million and $68 million, respectively, resulting in an effective tax rate for the periods of 32.0% and 32.7%, respectively. The effective tax rates reflect the tax impact of permanent items, state tax expense, changes in tax laws, and non-U.S. net earnings. The effective tax rate can vary from period to period due to permanent tax adjustments, discrete items such as the settlement of income tax audits and changes in tax laws, as well as recurring factors such as changes in the overall effective state tax rate.

Income Taxes

6 Months Ended

Mar. 31, 2016

Unrecognized Tax Benefits

During the second quarter of fiscal year 2016, the Company increased its unrecognized tax benefits and reduced additional paid-in capital by approximately $58 million associated with certain pre-Separation intercompany transactions which potentially impact NOL carryforwards. Refer to Note 5 for a discussion. The Company's uncertain tax positions relate to tax years that remain subject to audit by the taxing authorities in the U.S. federal, state and local, and foreign jurisdictions. Based on the current status of its income tax audits, the Company does not believe that the balance of its unrecognized tax benefits will be resolved in the next twelve months. The resolution of certain components of the Company's uncertain tax positions may be partially offset by an adjustment to the receivable from Tyco, which was recorded pursuant to the 2012 Tax Sharing Agreement. Refer to Note 7 for more information on the 2012 Tax Sharing Agreement, as defined therein.

Effective Tax Rate

The Company's income tax expense for the quarter and six months ended March 31, 2016 totaled $28 million and $56 million, respectively, resulting in an effective tax rate for the periods of 31.1% and 30.8% respectively. The Company's income tax expense for the quarter and six months ended March 27, 2015 totaled $32 million and $68 million, respectively, resulting in an effective tax rate for the periods of 32.0% and 32.7%, respectively. The effective tax rates reflect the tax impact of permanent items, state tax expense, changes in tax laws, and non-U.S. net earnings. The effective tax rate can vary from period to period due to permanent tax adjustments, discrete items such as the settlement of income tax audits and changes in tax laws, as well as recurring factors such as changes in the overall effective state tax rate.