Company-Sponsored Employee Benefit Plans (Components of Net Benefit Costs and Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jun. 28, 2014
Accumulated other comprehensive loss (income) expected to be recognized as components of net benefit cost
Amortization of prior service cost	$ 11,370
Amortization of actuarial losses (gains)	40,952
Total	52,322
Pension Benefits
Net benefit costs
Service cost	11,815	$ 11,263	$ 9,657
Interest cost	174,602	171,120	160,436
Expected return on plan assets	(216,888)	(228,624)	(192,795)
Amortization of prior service cost	11,201	11,111	11,145
Amortization of actuarial loss	22,186	19,871	16,327
Net pension costs/ Net other postretirement benefit costs	2,916	(15,259)	4,770
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Amortization of prior service cost	11,202	11,111	11,145
Amortization of actuarial loss	22,186	19,871	16,327
Prior service cost arising in current year, before tax	0	(914)	347
Net actuarial (loss) gain, net arising in current year	(681,691)	(62,270)	(210,978)
Total changes recognized in other comprehensive (loss) income	(648,303)	(32,202)	(183,159)
Accumulated other comprehensive loss (income) expected to be recognized as components of net benefit cost
Amortization of prior service cost	11,202
Amortization of actuarial losses (gains)	41,511
Total	52,713
Other Postretirement Plans
Net benefit costs
Service cost	547	536	546
Interest cost	622	590	748
Amortization of prior service cost	168	168	168
Amortization of actuarial loss	(481)	(434)	(143)
Net pension costs/ Net other postretirement benefit costs	856	860	1,319
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Amortization of prior service cost	168	168	168
Amortization of actuarial loss	(481)	(434)	(143)
Net actuarial (loss) gain, net arising in current year	1,348	1,050	3,280
Total changes recognized in other comprehensive (loss) income	1,035	$ 784	$ 3,305
Accumulated other comprehensive loss (income) expected to be recognized as components of net benefit cost
Amortization of prior service cost	168
Amortization of actuarial losses (gains)	(559)
Total	$ (391)