Employee Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended
	Mar. 31, 2012 Pension Benefits [Member]	Apr. 02, 2011 Pension Benefits [Member]	Mar. 31, 2012 Pension Benefits [Member]	Apr. 02, 2011 Pension Benefits [Member]	Mar. 31, 2012 Other Postretirement Plans [Member]	Apr. 02, 2011 Other Postretirement Plans [Member]	Mar. 31, 2012 Other Postretirement Plans [Member]	Apr. 02, 2011 Other Postretirement Plans [Member]	Mar. 31, 2012 Qualified pension plan [Member]	Dec. 31, 2011 Supplemental Executive Retirement Plan [Member]	Mar. 31, 2012 Supplemental Executive Retirement Plan [Member]
Service cost	$ 27,055,000	$ 24,861,000	$ 81,166,000	$ 74,582,000	$ 114,000	$ 99,000	$ 342,000	$ 297,000
Interest cost	36,878,000	33,743,000	110,635,000	101,230,000	158,000	131,000	474,000	393,000
Expected return on plan assets	(40,401,000)	(32,980,000)	(121,204,000)	(98,940,000)	0	0	0	0
Amortization of prior service cost	1,202,000	990,000	3,604,000	2,969,000	53,000	46,000	161,000	139,000
Amortization of net actuarial loss (gain)	15,042,000	19,988,000	45,125,000	59,964,000	(82,000)	(97,000)	(248,000)	(291,000)
Amortization of transition obligation	0	0	0	0	39,000	39,000	115,000	115,000
Net pension costs/ Net other postretirement benefit costs	39,776,000	46,602,000	119,326,000	139,805,000	282,000	218,000	844,000	653,000
Employer contributions			16,700,000	16,000,000
Employer contributions made in prior year that would normally have been made in current fiscal year									140,000,000
Estimated contributions to defined benefit plans in current fiscal year					300,000		300,000				23,100,000
Amount received for redemption of corporate-owned life insurance policies										$ 75,000,000