CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjustment Accumulated Deficit
Balance at the beginning of the period (in shares) at Jun. 29, 2019		228.8
Balance at the beginning of the period at Jun. 29, 2019	$ 725.8	$ 0.2	$ 70,244.7	$ (69,384.5)	$ (134.6)	$ 3.0	$ 3.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2.0			2.0
Other comprehensive loss	(31.0)				(31.0)
Shares issued under employee stock plans, net of tax (in shares)		2.8
Shares issued under employee stock plans, net of tax	(12.7)		(12.7)
Stock-based compensation	33.5		33.5
Repurchase of common stock (in shares)		(3.6)
Repurchase of common stock	(43.8)			(43.8)
Other	0.1			0.1
Balance at the end of the period (in shares) at Mar. 28, 2020		228.0
Balance at the end of the period at Mar. 28, 2020	676.9	$ 0.2	70,265.5	(69,423.2)	(165.6)
Balance at the beginning of the period (in shares) at Dec. 28, 2019		230.2
Balance at the beginning of the period at Dec. 28, 2019	764.3	$ 0.2	70,254.0	(69,357.4)	(132.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32.8)			(32.8)
Other comprehensive loss	(33.1)				(33.1)
Shares issued under employee stock plans, net of tax (in shares)		0.6
Shares issued under employee stock plans, net of tax	(0.1)		(0.1)
Stock-based compensation	11.6		11.6
Repurchase of common stock (in shares)		(2.8)
Repurchase of common stock	(33.1)			(33.1)
Other	0.1			0.1
Balance at the end of the period (in shares) at Mar. 28, 2020		228.0
Balance at the end of the period at Mar. 28, 2020	676.9	$ 0.2	70,265.5	(69,423.2)	(165.6)
Balance at the beginning of the period (in shares) at Jun. 27, 2020		228.3
Balance at the beginning of the period at Jun. 27, 2020	711.4	$ 0.2	70,274.3	(69,397.2)	(165.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48.0			48.0
Other comprehensive loss	59.4				59.4
Shares issued under employee stock plans, net of tax (in shares)		2.6
Shares issued under employee stock plans, net of tax	(8.7)		(8.7)
Stock-based compensation	$ 33.4		33.4
Repurchase of common stock (in shares)	(2.3)	(2.3)
Repurchase of common stock	$ (31.7)			(31.7)
Balance at the end of the period (in shares) at Apr. 03, 2021		228.6
Balance at the end of the period at Apr. 03, 2021	811.8	$ 0.2	70,299.0	(69,380.9)	(106.5)
Balance at the beginning of the period (in shares) at Jan. 02, 2021		228.5
Balance at the beginning of the period at Jan. 02, 2021	801.0	$ 0.2	70,288.0	(69,384.8)	(102.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	11.8			11.8
Other comprehensive loss	(4.1)				(4.1)
Shares issued under employee stock plans, net of tax (in shares)		0.6
Shares issued under employee stock plans, net of tax	0.0		0.0
Stock-based compensation	$ 11.0		11.0
Repurchase of common stock (in shares)	(0.5)	(0.5)
Repurchase of common stock	$ (7.9)			(7.9)
Balance at the end of the period (in shares) at Apr. 03, 2021		228.6
Balance at the end of the period at Apr. 03, 2021	$ 811.8	$ 0.2	$ 70,299.0	$ (69,380.9)	$ (106.5)