Company-Sponsored Employee Benefit Plans (Components of Net Benefit Costs and Other Comprehensive Income) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jul. 03, 2010
Amortization of prior service cost	$ 5,021,000	$ 4,145,000	$ 4,394,000
Amortization of net actuarial loss (gain)	59,835,000	79,564,000	40,037,000
Amortization of transition obligation	153,000	153,000	153,000
Prior service cost arising in current year, before tax	(8,706,000)	(9,239,000)
Actuarial (loss) gain, net arising in current year, before tax	(580,291,000)	83,898,000	(454,756,000)
Amortization of prior service cost in next fiscal year	6,016,000
Amortization of actuarial losses (gains) in next fiscal year	75,883,000
Amortization of transition obligation in next fiscal year	141,000
Total amounts that will be amortized from accumulated other comprehensive loss (income) in next fiscal year	82,040,000
Pension Benefits [Member]
Service cost	108,223,000	99,443,000	66,650,000
Interest cost	147,512,000	134,973,000	119,593,000
Expected return on plan assets	(161,605,000)	(131,921,000)	(104,860,000)
Amortization of prior service cost	4,806,000	3,960,000	4,209,000
Amortization of actuarial loss (gain)	60,166,000	79,952,000	40,526,000
Net pension costs/ Net other postretirement benefit costs	159,102,000	186,407,000	126,118,000
Net decrease in net company-sponsored pension costs during period	27,300,000
Expected decrease in net company-sponsored pension costs in next fiscal year	26,500,000
Amortization of prior service cost	4,806,000	3,960,000	4,209,000
Amortization of net actuarial loss (gain)	60,166,000	79,952,000	40,526,000
Prior service cost arising in current year, before tax	(8,706,000)	(8,252,000)	0
Actuarial (loss) gain, net arising in current year, before tax	(579,366,000)	84,055,000	(454,023,000)
Total changes recognized in other comprehensive (loss) income	(523,100,000)	159,715,000	(409,288,000)
Amortization of prior service cost in next fiscal year	5,847,000
Amortization of actuarial losses (gains) in next fiscal year	76,086,000
Amortization of transition obligation in next fiscal year	0
Total amounts that will be amortized from accumulated other comprehensive loss (income) in next fiscal year	81,933,000
Other Postretirement Plans [Member]
Service cost	457,000	396,000	328,000
Interest cost	632,000	524,000	562,000
Amortization of prior service cost	215,000	185,000	185,000
Amortization of actuarial loss (gain)	(331,000)	(388,000)	(490,000)
Amortization of transition obligation	153,000	153,000	153,000
Net pension costs/ Net other postretirement benefit costs	1,126,000	870,000	738,000
Amortization of prior service cost	215,000	185,000	185,000
Amortization of net actuarial loss (gain)	(331,000)	(388,000)	(490,000)
Amortization of transition obligation	153,000	153,000	153,000
Prior service cost arising in current year, before tax	0	(987,000)	0
Actuarial (loss) gain, net arising in current year, before tax	(925,000)	(157,000)	(733,000)
Total changes recognized in other comprehensive (loss) income	(888,000)	(1,194,000)	(885,000)
Amortization of prior service cost in next fiscal year	169,000
Amortization of actuarial losses (gains) in next fiscal year	(203,000)
Amortization of transition obligation in next fiscal year	141,000
Total amounts that will be amortized from accumulated other comprehensive loss (income) in next fiscal year	$ 107,000