Financial Instruments, Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Dec. 30, 2017	Mar. 27, 2021	Mar. 28, 2020	Jun. 27, 2020	Jun. 24, 2017	Mar. 30, 2013
Debt Instrument [Line Items]
Document Period End Date				Mar. 27, 2021
Debt, Long-term and Short-term, Combined Amount	$ 1,000,000			$ 1,000,000		$ 1,000,000
Less: Reduction for unamortized discount and debt issuance costs	(4,900)				$ (5,978)
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed			101.00%
Interest expense relating to the Notes	8,900	$ 8,900		26,700	26,700
Estimated fair value of long-term debt	1,100,000			1,100,000
Interest Expense	9,400	9,300		28,100	27,900
Secured Long-term Debt, Noncurrent	995,100			995,100		994,022
Notes Payable [Abstract]
Unrealized Gain (Loss) on Investments	100	$ (400)		5,600	$ 200
Fixed Rate Note Due June 2027 at 3 Point 45 Percent [Member]
Debt Instrument [Line Items]
Long-term debt	$ 500,000			$ 500,000		$ 500,000	$ 500,000
Fixed Rate Note Due November 2018 at 2 Point 50 Percent [Member]
Debt Instrument [Line Items]
Stated interest rate of the notes	0.00%			0.00%		2.50%
Fxed Rate Note Due March 2023 at 3 Point 375 Percent [Member]
Debt Instrument [Line Items]
Long-term debt	$ 500,000			$ 500,000		$ 500,000		$ 500,000
Effective interest rate of the Notes								3.50%
proceeds from issuance of long term debt 3								$ 490,000
FixedRateNoteDueJune2027at3Point450Percent[Member] [Member]
Debt Instrument [Line Items]
Stated interest rate of the notes	3.45%			3.45%		3.45%	3.45%
Fixed Rate Note Due June 2027 at 3 Point 50 Percent [Member] [Domain]
Debt Instrument [Line Items]
Effective interest rate of the Notes							3.50%
Fixed Rate Note Due June 2027 at 3 Point 50 Percent [Member] [Member]
Debt Instrument [Line Items]
Net Proceeds From Issuance of Long Term Debt 5							$ 495,200
Fixed Rate Note Due March 2023 at 3 Point 375 Percent [Member]
Debt Instrument [Line Items]
Stated interest rate of the notes	3.375%			3.375%		3.375%		3.375%