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. 02, 2022	Apr. 02, 2022	Jan. 01, 2022	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Oct. 03, 2020	Jul. 02, 2022	Jul. 03, 2021	Jun. 27, 2020
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt	$ 68.4				$ 456.6				$ 68.4	$ 456.6
Long-term debt					224.1					224.1
Mezzanine equity - Senior Convertible Notes					0.0					0.0
Additional paid-in capital					70,183.2					70,183.2
Accumulated deficit	(69,542.3)				(69,322.3)				(69,542.3)	(69,322.3)
Income Statement [Abstract]
Interest Expense									(23.3)	(14.7)	$ (13.4)
Net income	$ 16.5	$ 19.2	$ 34.6	$ (54.8)	$ 3.3	$ 17.2	$ 27.3	$ 19.7	$ 15.5	$ 67.5	$ 49.0
Net income per share:
Basic (usd per share)	$ 0.07	$ 0.08	$ 0.15	$ (0.24)	$ 0.01	$ 0.08	$ 0.12	$ 0.09	$ 0.07	$ 0.30	$ 0.21
Diluted (usd per share)	$ 0.07	$ 0.08	$ 0.14	$ (0.24)	$ 0.01	$ 0.07	$ 0.12	$ 0.08	$ 0.07	$ 0.29	$ 0.21
Shares used in per-share calculation:
Basic (in shares)	227.2	229.2	236.0	231.1	228.4	228.7	228.8	228.8	230.9	228.7	229.4
Diluted (in shares)	231.3	236.8	242.3	231.1	241.9	240.2	231.1	231.8	238.2	236.3	234.8
Accounting Standards Update 2020-06
Income Statement [Abstract]
Interest Expense										$ 21.4	$ 20.3
Net income										21.4	20.3
As Reported
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt					$ 414.2					414.2
Long-term debt					209.8					209.8
Mezzanine equity - Senior Convertible Notes					45.8					45.8
Additional paid-in capital					70,265.5					70,265.5
Accumulated deficit					(69,393.7)					(69,393.7)
Income Statement [Abstract]
Interest Expense										(36.1)	(33.7)
Net income										$ 46.1	$ 28.7
Net income per share:
Basic (usd per share)										$ 0.20	$ 0.13
Diluted (usd per share)										$ 0.20	$ 0.12
Shares used in per-share calculation:
Basic (in shares)										228.7	229.4
Diluted (in shares)										235.9	233.7
Adjustment | Accounting Standards Update 2020-06
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt					42.4					$ 42.4
Long-term debt					14.3					14.3
Mezzanine equity - Senior Convertible Notes					(45.8)					(45.8)
Additional paid-in capital					(82.3)					(82.3)
Accumulated deficit					$ 71.4					71.4
Income Statement [Abstract]
Interest Expense										21.4	$ 20.3
Net income										$ 21.4	$ 20.3
Net income per share:
Basic (usd per share)										$ 0.10	$ 0.08
Diluted (usd per share)										$ 0.09	$ 0.09
Shares used in per-share calculation:
Basic (in shares)										0.0	0.0
Diluted (in shares)										0.4	1.1