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Basis of Presentation and New Accounting Standards - Narrative (Details) - USD ($) $ in Millions	Dec. 25, 2022	Sep. 25, 2022	Jun. 27, 2022	Jun. 26, 2022	Dec. 26, 2021	Sep. 26, 2021	Jun. 27, 2021
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent	$ (1,780.2)	$ (2,109.6)		$ (2,439.3)	$ (2,378.9)	$ (2,039.4)	$ (2,116.5)
Convertible notes, net	3,021.0			1,021.6
Property and equipment, net	(1,649.6)			(1,481.1)
Additional Paid-in Capital
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent	(3,660.0)	(3,902.2)		(4,228.4)	(4,110.3)	(3,670.6)	(3,676.8)
Accumulated Deficit
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent	$ 1,851.4	$ 1,760.5		1,764.0	$ 1,729.9	$ 1,633.2	$ 1,563.1
Cumulative Effect, Period of Adoption, Adjustment
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent				303.3
Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-in Capital
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent				333.0
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent				(29.7)
Cumulative Effect, Period of Adoption, Adjustment | Adoption of ASU 2020-06
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Convertible notes, net			$ 277.9
Property and equipment, net			$ 25.4
Cumulative Effect, Period of Adoption, Adjustment | Adoption of ASU 2020-06 | Additional Paid-in Capital
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent				333.0
Cumulative Effect, Period of Adoption, Adjustment | Adoption of ASU 2020-06 | Accumulated Deficit
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Stockholders' Equity Attributable to Parent				$ 29.7

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Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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