Income taxes (Effective Tax Rate) (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Reconciliation between federal statutory tax rate and effective tax rate
U.S. federal statutory rate	35.00%	35.00%	35.00%
State and local income taxes, net of federal benefit	(1.70%)	0.30%	0.80%
Foreign tax rates, net of valuation allowances	(23.50%)	(12.70%)	(11.10%)
Establishment/(release) of valuation allowance, net of U.S. tax expense	1.30%	(1.70%)	(9.00%)
Change in contingency reserves	3.60%	(2.50%)	0.90%
Tax audit settlements	0.10%	(0.70%)	(2.90%)
Other, net	0.40%	0.50%	1.40%
Effective Income Tax Rate - continuing operations	15.20%	18.20%	15.10%
Tax benefit due to lower tax jurisdictions	$ (73)

The amount of current income tax expense (benefit) that is due to lower tax jurisdictions.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements.

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