Company-Sponsored Employee Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		1 Months Ended
	Mar. 30, 2013 Pension Benefits [Member]	Mar. 31, 2012 Pension Benefits [Member]	Mar. 30, 2013 Pension Benefits [Member]	Mar. 31, 2012 Pension Benefits [Member]	Mar. 30, 2013 Other Postretirement Plans [Member]	Mar. 31, 2012 Other Postretirement Plans [Member]	Mar. 30, 2013 Other Postretirement Plans [Member]	Mar. 31, 2012 Other Postretirement Plans [Member]	Nov. 24, 2012 Supplemental Executive Retirement Plan Freeze Event [Member] Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 17,399,000	$ 27,055,000	$ 52,768,000	$ 81,166,000	$ 135,000	$ 114,000	$ 406,000	$ 342,000
Interest cost	36,805,000	36,878,000	111,758,000	110,635,000	154,000	158,000	461,000	474,000
Expected return on plan assets	(42,801,000)	(40,401,000)	(128,402,000)	(121,204,000)	0	0	0	0
Amortization of prior service cost	3,083,000	1,202,000	6,817,000	3,604,000	42,000	53,000	126,000	161,000
Amortization of actuarial loss (gain)	17,637,000	15,042,000	54,987,000	45,125,000	(51,000)	(82,000)	(152,000)	(248,000)
Amortization of transition obligation	0	0	0	0	35,000	39,000	106,000	115,000
Curtailment loss			8,293,000	0			0	0	8,300,000
Net periodic benefit cost	32,123,000	39,776,000	106,221,000	119,326,000	315,000	282,000	947,000	844,000
Discount rate used in calculating benefit obligation									3.96%
Actuarial (loss) gain, net arising in current year, before tax									73,000,000
Prior service cost arising in current year, before tax									48,600,000
Period for prior service cost amortization									7 years
Benefit obligation after plan freeze									486,600,000
Employer contributions			$ 17,500,000	$ 16,700,000