Significant Accounting Policies - Recent accounting pronouncements (Details) - USD ($) $ in Thousands			12 Months Ended
	Jul. 01, 2019	Jul. 01, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales			$ (10,703,484)	$ (10,737,745)	$ (9,119,029)
Selling, general and administrative expenses			(1,543,939)	(1,639,989)	$ (1,412,820)
Impact of adoption of accounting standards		$ 49,869
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		25,096		69,933
Selling, general and administrative expenses		17,163		$ 41,115
Accounting Standard Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		32,000
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards			$ (1,734)
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		5,000
AOCI Attributable to Parent
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		(1,734)
AOCI Attributable to Parent | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		(2,000)
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		51,603
Retained Earnings | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of accounting standards		$ 2,000
Operating Leases, Right-Of-Use Asset And Lease Liability, Concentration Risk | Assets, Total | Subsequent Event | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of right-of-use asset and liability recorded in respect to total assets (less than)	1.00%