Company-Sponsored Employee Benefit Plans (Level 3 Rollforward) (Details) (Qualified Pension Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 28, 2014		Jun. 29, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	$ 2,937,519		$ 2,518,009
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	149,653	[1]	64,845	[1]
Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	31,204	[1]	14,375	[1]
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	79,220		56,392
Actual return on plan assets still held at the reporting date	4,975		8,023
Actual return on plan assets sold during the period	5,074		0
Purchase and sales during the year	(22,662)		14,805
Transfers in and/or out of Level 3 during the year	0		0
Fair value of plan assets at end of year	66,607		79,220
Level 3 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	64,845	[1]	51,097
Actual return on plan assets still held at the reporting date	3,044		6,696
Actual return on plan assets sold during the period	3,307		0
Purchase and sales during the year	(35,793)		7,052
Transfers in and/or out of Level 3 during the year	0		0
Fair value of plan assets at end of year	35,403	[1]	64,845	[1]
Level 3 [Member] | Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	14,375	[1]	5,295
Actual return on plan assets still held at the reporting date	1,931		1,327
Actual return on plan assets sold during the period	1,767		0
Purchase and sales during the year	13,131		7,753
Transfers in and/or out of Level 3 during the year	0		0
Fair value of plan assets at end of year	$ 31,204	[1]	$ 14,375	[1]

[1] Include investments in investment funds only.