Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jul. 01, 2017	Apr. 01, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of total debt	$ 8,300,000
Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of total debt	9,300,000	$ 8,600,000	$ 8,900,000
Carrying value of total debt	9,100,000	8,200,000	8,600,000
Recurring Fair Value Measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	433,718	288,384	44,361
Prepaid expenses and other current assets	43,364
Other assets	102,211
Total assets at fair value	579,293	288,384	44,361
Recurring Fair Value Measurements | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	384,528	238,954	91
Prepaid expenses and other current assets	43,364
Other assets	102,211
Total assets at fair value	530,103	238,954	91
Recurring Fair Value Measurements | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	49,190	49,430	44,270
Prepaid expenses and other current assets	0
Other assets	0
Total assets at fair value	49,190	49,430	44,270
Recurring Fair Value Measurements | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0	0
Prepaid expenses and other current assets	0
Other assets	0
Total assets at fair value	$ 0	$ 0	$ 0