Shareholders' Equity and Convertible Preferred Stock - Convertible Preferred Stock (Details) $ / shares in Units, $ in Millions		6 Months Ended	12 Months Ended
	Jan. 31, 2023 day $ / shares shares	Dec. 27, 2024 USD ($) $ / shares shares	Jun. 28, 2024 USD ($) $ / shares shares	Sep. 27, 2024 shares	Dec. 29, 2023 shares	Sep. 29, 2023 shares	Jun. 30, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares authorized (in shares)		5,000,000	5,000,000
Convertible preferred stock, par value (in dollars per share) | $ / shares		$ 0.01	$ 0.01
Convertible preferred stock, shares outstanding (in shares)		200,000	200,000	200,000	900,000	900,000	900,000
Convertible preferred stock, liquidation preference | $		$ 265	$ 257
Series A Preferred Stock | Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares authorized (in shares)	900,000
Convertible preferred stock, par value (in dollars per share) | $ / shares	$ 0.01
Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares outstanding (in shares)		235,000	235,000
Cumulative dividends | $		$ 30	$ 22
Unpaid dividends | $		30	22
Preferred stock, convertible, conversion ratio	0.33
Convertible preferred stock, liquidation preference | $		$ 265	$ 257
Convertible shares issued (in shares)		6,000,000	5,000,000
Convertible Preferred Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion price percentage	150.00%
Consecutive trading days | day	30
Convertible Preferred Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Consecutive trading days | day	20
Convertible Preferred Stock | Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares authorized (in shares)	5,000,000
Convertible preferred stock, par value (in dollars per share) | $ / shares	$ 1,000
Preferred dividend annual rate increasing per annum (as percent)	6.25%
Initial conversion rate (in dollar per share) | $ / shares	$ 47.75
Convertible Preferred Stock | Private Placement | January 31, 2030
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred dividend annual rate increasing per annum (as percent)	7.25%
Convertible Preferred Stock | Private Placement | January 31, 2033
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred dividend annual rate increasing per annum (as percent)	8.25%