Income Taxes	6 Months Ended
Mar. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Tax Cuts and Jobs Act (the Tax Act) was enacted into law on December 22, 2017 and made significant changes to U.S. federal corporate tax law. Effective January 1, 2018, the Tax Act lowered the U.S. corporate tax rate from 35% to 21% and prompted various other changes to U.S. federal corporate tax law, including the establishment of a territorial-style system for taxing foreign-source income of domestic multinational corporations and a one-time deemed repatriation tax on untaxed foreign earnings. The Tax Act resulted in a U.S. federal blended statutory rate of 24.5% for fiscal year 2018 and a rate of 21.0% for fiscal year 2019. Generally, the impacts of new tax legislation would be required to be recorded in the period of enactment, which was our first quarter of fiscal year 2018. However, in March 2018, the FASB issued ASU No. 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which incorporates various SEC paragraphs from Staff Accounting Bulletin No. 118 into income tax accounting guidance effective immediately, allowing registrants to record provisional amounts during a one-year measurement period. As of December 29, 2018, we completed our accounting for the tax effects of the Tax Act at the conclusion of the one-year measurement period. As a result, the income tax provision for the six months ended March 30, 2019 includes certain discrete benefits of $1,293 for Tax Act measurement period adjustments. The discrete benefits relate to $1,297 of additional dividends received deduction for certain foreign tax credits included in the mandatory deemed repatriation tax calculation, partially offset by $4 of expense for other Tax Act measurement period adjustments. The additional dividends received deduction is based on our assessment of the treatment under the applicable provisions of the Tax Act as currently written and enacted. If, in the future, Congress or the Department of the Treasury provides legislative or regulatory updates, this could change our assessment of the benefit associated with the dividends received deduction, and we may be required to recognize additional tax expense up to the full amount of the $1,297 in the period such updates are issued. Excluding the impact of certain discrete benefits in the current and prior year, the effective tax rate for the six months ended March 30, 2019 and March 31, 2018 was essentially flat compared to the same prior year period. Factors that affected the effective tax rate for the six months ended March 30, 2019 included impacts of the Tax Act, such as elimination of the domestic manufacturing deduction and the implementation of the global intangible low-taxed income (GILTI) provision. These increases were offset by favorable aspects of the Tax Act, such as the decrease in the U.S. income tax rate and provisions for incentivizing foreign-derived intangible income (FDII). In the first quarter of fiscal year 2019, we made an accounting policy election to treat the future tax impacts of the GILTI provisions of the Tax Act as a period cost to the extent applicable. The income tax benefit for the six months ended March 31, 2018 included certain discrete benefits of $25,378 for the estimated impact of the Tax Act. The discrete benefits related to $32,264 of estimated benefit from the remeasurement of our estimated net deferred tax liabilities, partially offset by $6,886 of estimated expense associated with the mandatory deemed repatriation tax. The income tax benefit for fiscal year 2018 included certain discrete benefits of $25,008 for the estimated impact of the Tax Act. The discrete benefits primarily related to $31,647 of estimated benefit from the remeasurement of our estimated net deferred tax liabilities, partially offset by $6,639 of estimated expense associated with the mandatory deemed repatriation tax. As of March 30, 2019, the liability for unrecognized tax benefits was $6,985, of which $4,510 would favorably affect our effective tax rate, if recognized. As of September 29, 2018, the liability for unrecognized tax benefits was $6,158, of which $3,740 would favorably affect our effective tax rate, if recognized. As of March 30, 2019, we do not expect significant changes in the amount of unrecognized tax benefits during the next twelve months.

INCOME TAXES

The Tax Cuts and Jobs Act (the Tax Act) was enacted into law on December 22, 2017 and made significant changes to U.S. federal corporate tax law. Effective January 1, 2018, the Tax Act lowered the U.S. corporate tax rate from 35% to 21% and prompted various other changes to U.S. federal corporate tax law, including the establishment of a territorial-style system for taxing foreign-source income of domestic multinational corporations and a one-time deemed repatriation tax on untaxed foreign earnings. The Tax Act resulted in a U.S. federal blended statutory rate of 24.5% for fiscal year 2018 and a rate of 21.0% for fiscal year 2019.

Generally, the impacts of new tax legislation would be required to be recorded in the period of enactment, which was our first quarter of fiscal year 2018. However, in March 2018, the FASB issued ASU No. 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which incorporates various SEC paragraphs from Staff Accounting Bulletin No. 118 into income tax accounting guidance effective immediately, allowing registrants to record provisional amounts during a one-year measurement period.

As of December 29, 2018, we completed our accounting for the tax effects of the Tax Act at the conclusion of the one-year measurement period. As a result, the income tax provision for the six months ended March 30, 2019 includes certain discrete benefits of $1,293 for Tax Act measurement period adjustments. The discrete benefits relate to $1,297 of additional dividends received deduction for certain foreign tax credits included in the mandatory deemed repatriation tax calculation, partially offset by $4 of expense for other Tax Act measurement period adjustments. The additional dividends received deduction is based on our assessment of the treatment under the applicable provisions of the Tax Act as currently written and enacted. If, in the future, Congress or the Department of the Treasury provides legislative or regulatory updates, this could change our assessment of the benefit associated with the dividends received deduction, and we may be required to recognize additional tax expense up to the full amount of the $1,297 in the period such updates are issued.

Excluding the impact of certain discrete benefits in the current and prior year, the effective tax rate for the six months ended March 30, 2019 and March 31, 2018 was essentially flat compared to the same prior year period. Factors that affected the effective tax rate for the six months ended March 30, 2019 included impacts of the Tax Act, such as elimination of the domestic manufacturing deduction and the implementation of the global intangible low-taxed income (GILTI) provision. These increases were offset by favorable aspects of the Tax Act, such as the decrease in the U.S. income tax rate and provisions for incentivizing foreign-derived intangible income (FDII). In the first quarter of fiscal year 2019, we made an accounting policy election to treat the future tax impacts of the GILTI provisions of the Tax Act as a period cost to the extent applicable.

The income tax benefit for the six months ended March 31, 2018 included certain discrete benefits of $25,378 for the estimated impact of the Tax Act. The discrete benefits related to $32,264 of estimated benefit from the remeasurement of our estimated net deferred tax liabilities, partially offset by $6,886 of estimated expense associated with the mandatory deemed repatriation tax. The income tax benefit for fiscal year 2018 included certain discrete benefits of $25,008 for the estimated impact of the Tax Act. The discrete benefits primarily related to $31,647 of estimated benefit from the remeasurement of our estimated net deferred tax liabilities, partially offset by $6,639 of estimated expense associated with the mandatory deemed repatriation tax.

As of March 30, 2019, the liability for unrecognized tax benefits was $6,985, of which $4,510 would favorably affect our effective tax rate, if recognized. As of September 29, 2018, the liability for unrecognized tax benefits was $6,158, of which $3,740 would favorably affect our effective tax rate, if recognized. As of March 30, 2019, we do not expect significant changes in the amount of unrecognized tax benefits during the next twelve months.