Fair Value Measurements and Investments Debt Instrument Fair Value (Details) - USD ($) $ in Millions		Dec. 29, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Long-term debt, including current portion		$ 12,051	$ 13,151
Secured Notes
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		1,838	1,835
Long-term debt, fair value		2,026	2,062
Unsecured Notes
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		3,252	3,244
Long-term debt, fair value		3,892	3,956
Term Loan A
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		3,978	4,074
Long-term debt, fair value		4,040	4,130
U.S. Term Loan B-2
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		0	2,968
Long-term debt, fair value		0	2,989
U.S Term Loan B-3
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		2,952	0
Long-term debt, fair value		2,966	0
Euro Term Loan B-2
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount	[1]	0	1,000
Long-term debt, fair value	[1]	0	1,010
Convertible Debt 2020
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount		31	30
Long-term debt, fair value		33	34
Total
Debt Instrument [Line Items]
Long-term debt, including current portion		12,051	13,151
Long-term debt, fair value		$ 12,957	$ 14,181

[1] Euro Term Loan B-2 outstanding principal amount as of June 30, 2017 was based upon the Euro to U.S. dollar exchange rate as of that respective date.