Employee Benefit Costs (Schedule of Inputs and Valuation Techniques Used to Measure Fair Value Of Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014		Jun. 30, 2013		Jul. 01, 2012
Assets at Fair Value	$ 1,043,466		$ 962,633
Short-term Investments [Member]
Assets at Fair Value	21,534		26,714
Fixed Income Securities [Member]
Assets at Fair Value	542,381		369,744
U.S. Common Stocks [Member]
Assets at Fair Value	204,578		211,767
International Mutual Funds [Member]
Assets at Fair Value	106,990		100,392
Venture Capital Funds [Member]
Assets at Fair Value	82,776	[1]	153,645	[1]
Debt Funds [Member]
Assets at Fair Value	19,907	[2]	27,299	[2]
Real Estate Funds [Member]
Assets at Fair Value	10,445	[3]	11,506	[3]
Private Equity Funds [Member]
Assets at Fair Value	54,855	[4]	61,566	[4]
Fair Value Measurements Using Level 1 [Member]
Assets at Fair Value	333,102		338,873
Fair Value Measurements Using Level 1 [Member] | Short-term Investments [Member]
Assets at Fair Value	21,534		26,714
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	204,578		211,767
Fair Value Measurements Using Level 1 [Member] | International Mutual Funds [Member]
Assets at Fair Value	106,990		100,392
Fair Value Measurements Using Level 1 [Member] | Venture Capital Funds [Member]
Assets at Fair Value	0	[1]	0	[1]
Fair Value Measurements Using Level 1 [Member] | Debt Funds [Member]
Assets at Fair Value	0	[2]	0	[2]
Fair Value Measurements Using Level 1 [Member] | Real Estate Funds [Member]
Assets at Fair Value	0	[3]	0	[3]
Fair Value Measurements Using Level 1 [Member] | Private Equity Funds [Member]
Assets at Fair Value	0	[4]	0	[4]
Fair Value Measurements Using Level 2 [Member]
Assets at Fair Value	542,381		369,744
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	542,381		369,744
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	0	[1]	0	[1]
Fair Value Measurements Using Level 2 [Member] | Debt Funds [Member]
Assets at Fair Value	0	[2]	0	[2]
Fair Value Measurements Using Level 2 [Member] | Real Estate Funds [Member]
Assets at Fair Value	0	[3]	0	[3]
Fair Value Measurements Using Level 2 [Member] | Private Equity Funds [Member]
Assets at Fair Value	0	[4]	0	[4]
Fair Value Measurements Using Level 3 [Member]
Assets at Fair Value	167,983	[5]	254,016	[5]	296,555
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	82,776	[1],[5]	153,645	[1],[5]	152,093
Fair Value Measurements Using Level 3 [Member] | Debt Funds [Member]
Assets at Fair Value	19,907	[2],[5]	27,299	[2],[5]	36,211
Fair Value Measurements Using Level 3 [Member] | Real Estate Funds [Member]
Assets at Fair Value	10,445	[3],[5]	11,506	[3],[5]	13,888
Fair Value Measurements Using Level 3 [Member] | Private Equity Funds [Member]
Assets at Fair Value	54,855	[4],[5]	61,566	[4],[5]	71,185
Fair Value Measurements Using Level 3 [Member] | Global Balanced Funds [Member]
Assets at Fair Value			$ 0	[5]	$ 23,178

[1] 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.

[2] 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.

[3] 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.

[4] 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.

[5] (a) There were no transfers in or out of Level 3 during the years ended June 29, 2014 or June 30, 2013.