Income Taxes (Details) - USD ($) $ in Millions					6 Months Ended		12 Months Ended
	Apr. 01, 2020	Apr. 01, 2017	Apr. 01, 2015	Apr. 01, 2014	Dec. 31, 2015	Dec. 27, 2014	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Income Taxes [Line Items]
Deferred Tax Assets, Net of Valuation Allowance					$ 54.6		$ 161.9	$ 86.4
Deferred Tax Liabilities, Gross					1,563.7		1,825.7	729.0
Pre-tax income:
Foreign					323.7		1,069.2	641.9	$ 607.7
Income from continuing operations before income taxes					(23.2)		248.0	272.6	607.7
Current:
Federal					59.2		77.0	44.0	125.0
State					3.2		6.9	9.3	10.7
Foreign					40.4		54.1	49.1	24.3
Subtotal					104.2		136.0	104.6	160.1
Deferred:
Federal					(32.5)		(17.5)	7.8	16.6
State					(3.3)		(0.8)	(5.8)	0.0
Foreign					(69.5)		(5.2)	(15.1)	(10.9)
Subtotal					(133.0)		(16.0)	(37.3)	5.7
Total					$ (28.8)	$ 26.8	$ 120.0	$ 67.3	$ 165.8
Effective Income Tax Rate Reconciliation
Provision at statutory rate					12.50%		12.50%	12.50%	35.00%
Ireland tax on non-trading differences					80.80%		(10.30%)	2.80%	0.00%
Expenses not deductible for tax purposes/ deductions not expensed for book, net					(151.70%)		15.50%	12.10%	(0.60%)
State income taxes, net of Federal benefit					(15.30%)		(1.00%)	(0.20%)	1.10%
Foreign tax credit					0.00%		0.00%	0.20%	(0.10%)
Research and development credit					5.10%		(0.80%)	(0.50%)	(0.50%)
Other					(43.30%)		5.60%	(0.80%)	(1.00%)
Foreign tax rate differences					394.80%		(16.60%)	(16.00%)	(8.70%)
Valuation allowance changes					(148.60%)		25.00%	2.90%	0.00%
Audit impacts					0.00%		0.00%	0.00%	(1.20%)
Change in unrecognized taxes					(10.10%)		18.50%	15.00%	3.30%
Rate change impacts					0.00%		0.00%	(3.30%)	0.00%
Effective income tax rate					124.20%		48.40%	24.70%	27.30%
Undistributed earnings of foreign subsidiaries reinvested indefinitely for which no provision have been provided					$ 3,700.0
Deferred income tax asset (liability):
Depreciation and amortization					(1,808.5)		$ (1,889.0)	$ (982.6)
Inventory basis differences					21.0		30.2	43.9
Accrued liabilities					58.1		67.2	84.3
Allowance for doubtful accounts					1.3		0.9	0.9
Research and development					63.7		62.8	3.7
Loss carryforwards					243.6		242.7	47.1
Share-based compensation					20.6		14.3	14.3
Foreign Tax Credit					10.6		10.6	10.6
Federal benefit of unrecognized tax positions					22.8		26.3	20.7
Interest carryforwards					334.6		259.7	253.3
Other, net					14.7		29.7	59.6
Deferred Tax Assets, Gross					(1,017.5)		(1,144.6)	(444.2)
Valuation allowance for loss and credit carry forwards					(491.6)		(519.2)	(198.4)
Liabilities					(1,509.1)		(1,663.8)	(642.6)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning balance					318.6	$ 160.1	160.1	110.1
Additions: Positions related to the current year					17.9		38.9	28.8
Additions: Positions of prior years							122.7	22.7
Reductions: Positions of prior years					(38.8)
Reductions: Settlements with taxing authorities					(15.3)		(1.4)
Reductions: Lapse of statutes of limitation							(1.7)	(1.5)
Unrecognized tax benefits, ending balance					282.4		318.6	160.1	$ 110.1
Unrecognized tax benefits liability, interest and penalties accrued					52.1		65.7	45.3
Unrecognized tax benefits, including income tax penalties and interest accrued					334.7		384.3	205.4
Unrecognized tax benefits that would impact effective tax rate					206.1		217.6	170.2
Income Tax Examination, Penalties and Interest Expense					8.0
Incremental tax obligation					$ 68.9
All Other Entities [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Israel statutory corporate tax rate under new law: 2013					25.00%
Israel statutory corporate tax rate under new law: 2014					26.50%
Revenue Commissioners, Ireland [Member]
Pre-tax income:
Foreign					$ (346.9)		(821.2)	(369.3)	0.0
Current:
Foreign					1.4		(2.0)	2.2	0.0
Deferred:
Foreign					(27.7)		7.5	$ (24.2)	$ 0.0
Domestic Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					269.1
Tax credit carryforwards, valuation allowance					1,455.1
Domestic Tax Authority [Member] | Capital Loss Carryforward [Member]
Deferred income tax asset (liability):
Tax credit carryforwards, valuation allowance					19.3
Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Net operating loss carryforwards					422.5
Operating loss carryforwards, valuation allowance					400.0
Foreign Tax Authority [Member] | Capital Loss Carryforward [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					19.3
State and Local Jurisdiction [Member]
Deferred income tax asset (liability):
Net operating loss carryforwards					823.7
Tax credit carryforwards					1,500.0
Operating loss carryforwards, valuation allowance					603.6
Tax credit carryforwards, valuation allowance					198.2
Minimum [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound					2.0
Maximum [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound					3.0
2017 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					10.2
2018 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					2.1
2020 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					22.0
2022 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					2.6
2023 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					0.1
2025 [Member] | Foreign Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					3.4
Internal Revenue Service (IRS) [Member] | Expires Tax Year 2022 [Member] | Domestic Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					30.2
Internal Revenue Service (IRS) [Member] | Expires Tax year 2025 [Member] | Domestic Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					167.8
Internal Revenue Service (IRS) [Member] | Expires Tax Year 2027 [Member] | Domestic Tax Authority [Member]
Deferred income tax asset (liability):
Tax credit carryforwards					$ 37.2
Israel Tax Authority [Member] | Foreign Tax Authority [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Foreign Statutory Corporate Tax Rate, Prior To Change, Prior Two Years					10.00%
Foreign Statutory Corporate Tax Rate, Prior To Change, Prior Year					7.00%
Israel statutory corporate tax rate under new law: 2013					6.00%
Her Majesty's Revenue and Customs (HMRC) [Member] | Foreign Tax Authority [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Foreign Statutory Corporate Tax Rate			20.00%	21.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount					$ (1.4)		$ 4.7
Mexican Tax Authority [Member] | Foreign Tax Authority [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Foreign Statutory Corporate Tax Rate					30.00%
Scenario, Forecast [Member] | Her Majesty's Revenue and Customs (HMRC) [Member] | Foreign Tax Authority [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Foreign Statutory Corporate Tax Rate	18.00%	19.00%