Taxes - Significant Differences Between United States Federal Statutory Tax Rate and Company's Effective Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Amount
Provision for income taxes at the U.K. statutory tax rate	$ 1	$ (41)	$ 118
Effects of global financing arrangements	(24)	(41)	(50)
Effect of changes in valuation allowances on deferred tax assets	24	67	11
Non-deductible goodwill impairment	18	32	0
Differences in tax effects on foreign income	13	(7)	(15)
Liability for uncertain tax positions	11	(12)	8
Tax rate change impact on deferred items	9	0	0
Share based compensation	6	9	(12)
State and local income taxes, net of federal benefit	5	4	6
Withholding tax	4	3	3
Transaction cost	0	0	9
Other	(1)	(4)	1
Total provision for income taxes	$ 66	$ 10	$ 79
Percent
Provision for income taxes at the U.K. statutory tax rate	19.00%	19.00%	19.00%
Effects of global financing arrangements	(953.40%)	21.70%	(8.10%)
Effect of changes in valuation allowances on deferred tax assets	955.70%	(30.90%)	2.80%
Non-deductible goodwill impairment	700.20%	(15.10%)	0.00%
Differences in tax effects on foreign income	522.40%	1.20%	(1.80%)
Liability for uncertain tax positions	414.20%	5.70%	1.30%
Tax rate change impact on deferred items	351.30%	0.00%	0.00%
Share based compensation	247.70%	(4.20%)	(2.60%)
State and local income taxes, net of federal benefit	201.50%	(1.90%)	0.90%
Withholding tax	165.00%	(1.60%)	0.60%
Transaction cost	0.00%	0.00%	1.50%
Other	(33.10%)	1.40%	(0.90%)
Total	2590.50%	(4.70%)	12.70%
Capital loss			$ 11
Foreign
Percent
Provision for income taxes at the U.K. statutory tax rate			21.00%	31.54%