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Restructuring and Other Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Fiscal 2021 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges	$ 157.6		$ 160.2
Non-cash charges	22.2		25.6
Restructuring and non-cash charges	179.8		185.8
Fiscal 2021 Strategic Realignment Plan \| Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges	153.8		156.3
Fiscal 2021 Strategic Realignment Plan \| Other cash charges
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges	3.8		3.9
Fiscal 2021 Strategic Realignment Plan \| Impairment of assets
Restructuring Cost and Reserve [Line Items]
Non-cash charges	22.2		24.3
Fiscal 2021 Strategic Realignment Plan \| Inventory-related charges
Restructuring Cost and Reserve [Line Items]
Non-cash charges	0.0		1.3
Fiscal 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges		$ 9.5	0.0	$ 16.5
Cash-related Restructuring Charges, Cost Incurred to Date	103.4		103.4
Non-cash charges		6.3		8.1
Non-cash Charges, Cost Incurred to Date	42.4		42.4
Restructuring and non-cash charges		15.8		24.6
Restructuring and Related Cost, Cost Incurred to Date	145.8		145.8
Fiscal 2019 Restructuring Plan \| Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges		9.0	0.0	14.9
Cash-related Restructuring Charges, Cost Incurred to Date	90.3		90.3
Fiscal 2019 Restructuring Plan \| Lease termination and store closure costs
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges		0.2		0.5
Cash-related Restructuring Charges, Cost Incurred to Date	2.3		2.3
Fiscal 2019 Restructuring Plan \| Other cash charges
Restructuring Cost and Reserve [Line Items]
Cash-related restructuring charges		0.3	0.0	1.1
Cash-related Restructuring Charges, Cost Incurred to Date	10.8		10.8
Fiscal 2019 Restructuring Plan \| Impairment of assets
Restructuring Cost and Reserve [Line Items]
Non-cash charges		2.3		3.5
Non-cash Charges, Cost Incurred to Date	19.0		19.0
Fiscal 2019 Restructuring Plan \| Inventory-related charges
Restructuring Cost and Reserve [Line Items]
Non-cash charges		0.4		1.0
Non-cash Charges, Cost Incurred to Date	8.2		8.2
Fiscal 2019 Restructuring Plan \| Accelerated stock-based compensation expense
Restructuring Cost and Reserve [Line Items]
Non-cash charges		3.6		3.6
Non-cash Charges, Cost Incurred to Date	3.6		3.6
Fiscal 2019 Restructuring Plan \| Loss on sale of property
Restructuring Cost and Reserve [Line Items]
Non-cash charges		$ 0.0		$ 0.0
Non-cash Charges, Cost Incurred to Date	$ 11.6		$ 11.6