Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017
Statements of Income and Comprehensive Income [Abstract]
Net income	$ 131,892	$ (75,015)	$ 329,315	$ 79,519
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	885	(2,122)	1,977	(2,220)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	423	(3)	1,518	350
Unrealized gains (losses) on post-retirement benefits, net of tax benefit (expense)	76	(76)	154	(32)
Other Comprehensive Income (Loss), Net of Tax	1,384	(2,201)	3,649	(1,902)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	133,276	(77,216)	332,964	77,617
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax	(201)	0	(228)	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	(96)	69	(310)	(51)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ (18)	$ (142)	$ (37)	$ (164)