Income Taxes	3 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Effective Tax Rate Sysco’s effective tax rate is reflective of the jurisdictions where the company has operations. Indefinitely reinvested earnings taxed at foreign statutory rates less than our domestic tax rate have the impact of reducing the effective tax rates. The effective tax rates for the first quarters of fiscal 2018 and fiscal 2017 were 32.72% and 35.28%, respectively. The lower effective tax rate for the first quarter of fiscal 2018 is primarily due to the favorable impact of the excess tax benefits of equity-based compensation that totaled $16.0 million. Sysco began recognizing these amounts within income tax expense in the first quarter of fiscal 2018 due to the adoption of ASU 2016-09. Uncertain Tax Positions As of September 30, 2017, the gross amount of unrecognized tax benefit and related accrued interest was $16.2 million and $11.1 million, respectively. It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain of the company’s unrecognized tax positions will increase or decrease in the next twelve months, either because Sysco prevails on positions challenged upon audit or because the company agrees to the disallowance. Items that may cause changes to unrecognized tax benefits primarily include the consideration of various filing requirements in numerous states and the allocation of income and expense between tax jurisdictions. At this time, an estimate of the range of the reasonably possible change cannot be made. Other The determination of the company’s provision for income taxes requires judgment, the use of estimates and the interpretation and application of complex tax laws. The company’s provision for income taxes reflects a combination of income earned and taxed in the various U.S. federal and state, as well as foreign, jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and the company’s change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.

INCOME TAXES

Effective Tax Rate

Sysco’s effective tax rate is reflective of the jurisdictions where the company has operations. Indefinitely reinvested earnings taxed at foreign statutory rates less than our domestic tax rate have the impact of reducing the effective tax rates. The effective tax rates for the first quarters of fiscal 2018 and fiscal 2017 were 32.72% and 35.28%, respectively. The lower effective tax rate for the first quarter of fiscal 2018 is primarily due to the favorable impact of the excess tax benefits of equity-based compensation that totaled $16.0 million. Sysco began recognizing these amounts within income tax expense in the first quarter of fiscal 2018 due to the adoption of ASU 2016-09.

Uncertain Tax Positions

As of September 30, 2017, the gross amount of unrecognized tax benefit and related accrued interest was $16.2 million and $11.1 million, respectively. It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain of the company’s unrecognized tax positions will increase or decrease in the next twelve months, either because Sysco prevails on positions challenged upon audit or because the company agrees to the disallowance. Items that may cause changes to unrecognized tax benefits primarily include the consideration of various filing requirements in numerous states and the allocation of income and expense between tax jurisdictions. At this time, an estimate of the range of the reasonably possible change cannot be made.

Other

The determination of the company’s provision for income taxes requires judgment, the use of estimates and the interpretation and application of complex tax laws. The company’s provision for income taxes reflects a combination of income earned and taxed in the various U.S. federal and state, as well as foreign, jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and the company’s change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.