Amount of increase (decrease) in additional paid-in capital (APIC) from recognition of substantial premium at which convertible debt instrument is issued.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Long-term Debt - Schedule of Long-term Debt (Details) - USD ($) $ / shares in Units, $ in Millions						3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Mar. 26, 2026	Mar. 23, 2026	Dec. 23, 2025	Dec. 22, 2025	Sep. 29, 2025	Mar. 29, 2026	Sep. 29, 2025	Mar. 29, 2026	Mar. 29, 2026	Mar. 30, 2025	Jun. 29, 2025
Debt Instrument [Line Items]
Initial Principal						$ 2,469.6		$ 2,469.6	$ 2,469.6		$ 6,325.0
Repayment of principal									(629.7)		0.0
Conversion to common stock									(18.5)		0.0
Outstanding principal						1,821.4		1,821.4	1,821.4		6,658.2
Unamortized premium/discount						(100.9)		(100.9)	(100.9)		(120.2)
Ending Balance						1,720.5		1,720.5	1,720.5		6,538.0
Equity component						247.3		247.3	247.3		0.0
Fair Value						1,982.6		1,982.6	1,982.6		$ 2,647.3
Repayments of senior debt							$ 308.5	0.0		$ 0.0
Paid-in-kind interest on long-term debt							$ 0.0	$ 21.8		$ 75.5
Substantial premium on 2L Convertible Notes					$ 168.8
Embedded Derivative
Debt Instrument [Line Items]
Reclassification to equity						$ 87.9			$ 87.9
Additional Paid-in Capital
Debt Instrument [Line Items]
Substantial premium on 2L Convertible Notes					$ 168.8
Convertible Notes \| 1.75% Convertible Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)						1.75%		1.75%	1.75%		1.75%
Effective interest rate (as a percent)											2.20%
Initial Principal											$ 575.0
Repayment of principal											0.0
Conversion to common stock											0.0
Outstanding principal											575.0
Unamortized premium/discount											(2.0)
Ending Balance											573.0
Equity component											0.0
Fair Value											$ 145.2
Convertible Notes \| 0.25% Convertible Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)						0.25%		0.25%	0.25%		0.25%
Effective interest rate (as a percent)											0.60%
Initial Principal											$ 750.0
Repayment of principal											0.0
Conversion to common stock											0.0
Outstanding principal											750.0
Unamortized premium/discount											(7.9)
Ending Balance											742.1
Equity component											0.0
Fair Value											$ 186.6
Convertible Notes \| 1.875% Convertible Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)						1.875%		1.875%	1.875%		1.875%
Effective interest rate (as a percent)											2.10%
Initial Principal											$ 1,750.0
Repayment of principal											0.0
Conversion to common stock											0.0
Outstanding principal											1,750.0
Unamortized premium/discount											(20.7)
Ending Balance											1,729.3
Equity component											0.0
Fair Value											$ 450.6
Convertible Notes \| New Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount	$ 475.9
Repayments of senior debt	$ 524.3
Convertible Notes \| New 2L Non-Renesas Convertible Notes(4)
Debt Instrument [Line Items]
Stated interest rate (as a percent)					2.50%		2.50%
Effective interest rate (as a percent)						3.00%		3.00%	3.00%
Initial Principal						$ 331.4		$ 331.4	$ 331.4
Repayment of principal									0.0
Conversion to common stock									(18.5)
Outstanding principal						312.9		312.9	312.9
Unamortized premium/discount						(6.9)		(6.9)	(6.9)
Ending Balance						306.0		306.0	306.0
Equity component						159.4		159.4	159.4
Fair Value						$ 489.4		$ 489.4	$ 489.4
Debt instrument, convertible, conversion price (in USD per share)					$ 12.23		$ 12.23
Debt conversion, converted instrument, shares issued (in shares)									1,500,000
Convertible Notes \| New 2L Renesas Convertible Notes(5)
Debt Instrument [Line Items]
Stated interest rate (as a percent)					2.50%		2.50%
Effective interest rate (as a percent)						12.30%		12.30%	12.30%
Initial Principal						$ 203.6		$ 203.6	$ 203.6
Repayment of principal									0.0
Conversion to common stock									0.0
Outstanding principal						203.6		203.6	203.6
Unamortized premium/discount						(76.7)		(76.7)	(76.7)
Ending Balance						126.9		126.9	126.9
Equity component						87.9		87.9	87.9
Fair Value						$ 198.6		$ 198.6	$ 198.6
Debt instrument, convertible, conversion price (in USD per share)					$ 18.35		$ 18.35
Convertible Notes \| 1.5L Convertible Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)	3.50%
Effective interest rate (as a percent)						4.30%		4.30%	4.30%
Initial Principal						$ 379.0		$ 379.0	$ 379.0
Repayment of principal									0.0
Conversion to common stock									0.0
Outstanding principal						379.0		379.0	379.0
Unamortized premium/discount						(13.6)		(13.6)	(13.6)
Ending Balance						365.4		365.4	365.4
Equity component						0.0		0.0	0.0
Fair Value						$ 379.0		$ 379.0	$ 379.0
Debt instrument, convertible, conversion price (in USD per share)	$ 20.14
Convertible Notes \| 2L Convertible Notes
Debt Instrument [Line Items]
Percentage of equity component not related to outstanding debt due to conversions						5.60%		5.60%	5.60%
Senior Notes \| 2030 Senior Notes
Debt Instrument [Line Items]
Effective interest rate (as a percent)											16.30%
Initial Principal											$ 1,250.0
Repayment of principal											0.0
Conversion to common stock											0.0
Outstanding principal											1,521.2
Unamortized premium/discount											(52.3)
Ending Balance											1,468.9
Equity component											0.0
Fair Value											$ 1,308.2
Senior Notes \| New Senior Secured Notes
Debt Instrument [Line Items]
Effective interest rate (as a percent)						12.90%		12.90%	12.90%
Initial Principal						$ 1,259.2		$ 1,259.2	$ 1,259.2
Repayment of principal									(629.7)
Conversion to common stock									0.0
Outstanding principal						629.5		629.5	629.5
Unamortized premium/discount						58.9		58.9	58.9
Ending Balance						688.4		688.4	688.4
Equity component						0.0		0.0	0.0
Fair Value						$ 681.4		$ 681.4	$ 681.4
Debt instrument, repurchased face amount				$ 175.0
Repayments of senior debt				$ 197.9
Paid-in-kind interest on long-term debt		$ 10.9	$ 10.2
Senior Notes \| New 2L Non-Convertible Notes
Debt Instrument [Line Items]
Effective interest rate (as a percent)					7.00%	12.50%	7.00%	12.50%	12.50%
Initial Principal						$ 296.4		$ 296.4	$ 296.4
Repayment of principal									0.0
Conversion to common stock									0.0
Outstanding principal						296.4		296.4	296.4
Unamortized premium/discount						(62.6)		(62.6)	(62.6)
Ending Balance						233.8		233.8	233.8
Equity component						0.0		0.0	0.0
Fair Value						$ 234.2		$ 234.2	$ 234.2
Unsecured Debt \| CRD Agreement Deposits
Debt Instrument [Line Items]
Effective interest rate (as a percent)											6.80%
Initial Principal											$ 2,000.0
Repayment of principal											0.0
Conversion to common stock											0.0
Outstanding principal											2,062.0
Unamortized premium/discount											(37.3)
Ending Balance											2,024.7
Equity component											0.0
Fair Value											$ 556.7