Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Dec. 27, 2020	Dec. 29, 2019	Jun. 28, 2020	Jun. 30, 2019
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 1.30	$ 1.15	$ 2.60	$ 2.30
Accounting Standards Update [Extensible List]					us-gaap:AccountingStandardsUpdate201818Member	us-gaap:AccountingStandardsUpdate201602Member