Employee Benefit Costs (Schedule of Inputs and Valuation Techniques Used to Measure Fair Value Of Assets) (Details) - USD ($) $ in Thousands		Jul. 01, 2018	Jul. 02, 2017
Assets at Fair Value		$ 765,631	$ 870,606
Short-term Investments [Member]
Assets at Fair Value		17,061	25,563
Fixed Income Securities [Member]
Assets at Fair Value		394,188	433,372
U.S. Common Stocks [Member]
Assets at Fair Value		183,030	204,736
International Mutual Funds [Member]
Assets at Fair Value		118,674	141,565
Venture Capital Funds [Member]
Assets at Fair Value	[1],[2]	26,078	31,060
Debt Funds [Member]
Assets at Fair Value	[3],[4]	2,778	5,469
Real Estate Funds [Member]
Assets at Fair Value	[3],[5]	1,166	1,621
Private Equity Funds [Member]
Assets at Fair Value	[1],[6]	22,656	27,220
Fair Value Measurements Using Level 1 [Member]
Assets at Fair Value		318,765	371,864
Fair Value Measurements Using Level 1 [Member] | Short-term Investments [Member]
Assets at Fair Value		17,061	25,563
Fair Value Measurements Using Level 1 [Member] | Fixed Income Securities [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 1 [Member] | U.S. Common Stocks [Member]
Assets at Fair Value		183,030	204,736
Fair Value Measurements Using Level 1 [Member] | International Mutual Funds [Member]
Assets at Fair Value		118,674	141,565
Fair Value Measurements Using Level 1 [Member] | Venture Capital Funds [Member]
Assets at Fair Value	[1],[2]	0	0
Fair Value Measurements Using Level 1 [Member] | Debt Funds [Member]
Assets at Fair Value	[3],[4]	0	0
Fair Value Measurements Using Level 1 [Member] | Real Estate Funds [Member]
Assets at Fair Value	[3],[5]	0	0
Fair Value Measurements Using Level 1 [Member] | Private Equity Funds [Member]
Assets at Fair Value	[1],[6]	0	0
Fair Value Measurements Using Level 2 [Member]
Assets at Fair Value		394,188	433,372
Fair Value Measurements Using Level 2 [Member] | Short-term Investments [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 2 [Member] | Fixed Income Securities [Member]
Assets at Fair Value		394,188	433,372
Fair Value Measurements Using Level 2 [Member] | U.S. Common Stocks [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 2 [Member] | International Mutual Funds [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 2 [Member] | Venture Capital Funds [Member]
Assets at Fair Value	[1],[2]	0	0
Fair Value Measurements Using Level 2 [Member] | Debt Funds [Member]
Assets at Fair Value	[3],[4]	0	0
Fair Value Measurements Using Level 2 [Member] | Real Estate Funds [Member]
Assets at Fair Value	[3],[5]	0	0
Fair Value Measurements Using Level 2 [Member] | Private Equity Funds [Member]
Assets at Fair Value	[1],[6]	0	0
Fair Value Measurements Using Level 3 [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 3 [Member] | Short-term Investments [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 3 [Member] | Fixed Income Securities [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 3 [Member] | U.S. Common Stocks [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 3 [Member] | International Mutual Funds [Member]
Assets at Fair Value		0	0
Fair Value Measurements Using Level 3 [Member] | Venture Capital Funds [Member]
Assets at Fair Value	[1],[2]	0	0
Fair Value Measurements Using Level 3 [Member] | Debt Funds [Member]
Assets at Fair Value	[3],[4]	0	0
Fair Value Measurements Using Level 3 [Member] | Real Estate Funds [Member]
Assets at Fair Value	[3],[5]	0	0
Fair Value Measurements Using Level 3 [Member] | Private Equity Funds [Member]
Assets at Fair Value	[1],[6]	$ 0	$ 0

[1] Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position.

[2] This category invests in a combination of public and private securities of companies in financial distress, spin-offs, or new projects focused on technology and manufacturing.

[3] Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position.

[4] This fund primarily invests in the debt of various entities including corporations and governments in emerging markets, mezzanine financing, or entities that are undergoing, are considered likely to undergo or have undergone a reorganization.

[5] This category invests primarily in real estate related investments, including real estate properties, securities of real estate companies and other companies with significant real estate assets as well as real estate related debt and equity securities.

[6] Primarily represents investments in all sizes of mostly privately held operating companies in the following core industry sectors: healthcare, energy, financial services, technology-media-telecommunications and industrial and consumer.