Recently Issued Accounting Pronouncements - Expected Impact on Balance Sheet (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Jul. 01, 2023	Apr. 01, 2023	Dec. 31, 2022	Oct. 01, 2022	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022	Oct. 02, 2021	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt	$ 96.2				$ 68.4				$ 96.2	$ 68.4	$ 456.6
Long-term debt											224.1
Mezzanine equity - Senior Convertible Notes											0.0
Additional paid-in capital											70,183.2
Accumulated deficit	(69,600.7)				(69,542.3)				(69,600.7)	(69,542.3)	(69,322.3)
Income Statement [Abstract]
Interest Expense									(27.1)	(23.3)	(14.7)
Net income	$ (0.1)	$ (15.4)	$ 8.4	$ 32.6	$ 16.5	$ 19.2	$ 34.6	$ (54.8)	$ 25.5	$ 15.5	$ 67.5
Net income per share:
Basic (usd per share)	$ 0	$ (0.07)	$ 0.04	$ 0.14	$ 0.07	$ 0.08	$ 0.15	$ (0.24)	$ 0.11	$ 0.07	$ 0.30
Diluted (usd per share)	$ 0	$ (0.07)	$ 0.04	$ 0.14	$ 0.07	$ 0.08	$ 0.14	$ (0.24)	$ 0.11	$ 0.07	$ 0.29
Shares used in per-share calculation:
Basic (in shares)	222.2	224.1	225.9	226.3	227.2	229.2	236.0	231.1	224.6	230.9	228.7
Diluted (in shares)	222.2	224.1	227.1	230.4	231.3	236.8	242.3	231.1	226.6	238.2	236.3
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]									Research and development
Government assistance									$ 4.0
Government assistance receivable	$ 14.5								$ 14.5
Accounting Standards Update 2020-06
Income Statement [Abstract]
Interest Expense											$ 21.4
Net income											21.4
As Reported
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt											414.2
Long-term debt											209.8
Mezzanine equity - Senior Convertible Notes											45.8
Additional paid-in capital											70,265.5
Accumulated deficit											(69,393.7)
Income Statement [Abstract]
Interest Expense											(36.1)
Net income											$ 46.1
Net income per share:
Basic (usd per share)											$ 0.20
Diluted (usd per share)											$ 0.20
Shares used in per-share calculation:
Basic (in shares)											228.7
Diluted (in shares)											235.9
Adjustment | Accounting Standards Update 2020-06
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt											$ 42.4
Long-term debt											14.3
Mezzanine equity - Senior Convertible Notes											(45.8)
Additional paid-in capital											(82.3)
Accumulated deficit											71.4
Income Statement [Abstract]
Interest Expense											21.4
Net income											$ 21.4
Net income per share:
Basic (usd per share)											$ 0.10
Diluted (usd per share)											$ 0.09
Shares used in per-share calculation:
Basic (in shares)											0.0
Diluted (in shares)											0.4