Company-Sponsored Employee Benefit Plans (Fair Value Measurements) (Details) - Retirement Plan - USD ($) $ in Thousands	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3,003,128	$ 2,937,519
Fair value of derivative assets	1,400	800
Fair value of derivative liabilities	300	600
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21,968	51,066
U.S. large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	567,234	995,792
U.S. small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	154,598	135,781
International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	732,595	717,022
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	567,280	568,419
U.S. government and agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	190,125	171,617
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,343	4,907
Derivatives, net
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,078	225
High yield fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	204,175	102,041
Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	335,265
Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	163,669	149,653
Private equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	52,891	31,204
Total investments at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,995,221	2,927,727
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,907	9,792
Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | U.S. large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	233,525	218,165
Level 1 | U.S. small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	154,598	135,781
Level 1 | International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | U.S. government and agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Derivatives, net
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	(127)
Level 1 | High yield fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Level 1 | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Total investments at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	388,123	353,819
Level 2 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21,968	51,066
Level 2 | U.S. large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	333,709	777,627
Level 2 | U.S. small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 | International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	732,595	717,022
Level 2 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	567,280	568,419
Level 2 | U.S. government and agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	190,125	171,617
Level 2 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,343	4,907
Level 2 | Derivatives, net
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,078	352
Level 2 | High yield fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 204,175	102,041
Level 2 | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Level 2 | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 25,386	114,250
Level 2 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 | Total investments at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,080,659	2,507,301
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	526,439	66,607	$ 79,220
Level 3 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | U.S. large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | U.S. small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | U.S. government and agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Derivatives, net
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | High yield fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	335,265	0	0
Level 3 | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	138,283	35,403	64,845
Level 3 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	52,891	31,204	$ 14,375
Level 3 | Total investments at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 526,439	$ 66,607