Fair Value (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - Recurring basis [Member] - USD ($)	Sep. 28, 2018	Jun. 29, 2018
Assets:
Total cash equivalents	$ 1,226,000,000	$ 1,012,000,000
Restricted cash and investments:
Total assets	1,283,000,000	1,026,000,000
Liabilities:
Total liabilities	1,000,000
Money market funds [Member]
Assets:
Total cash equivalents	801,000,000	620,000,000
Restricted cash and investments:
Restricted cash and investments:	0	1,000,000
Time deposits and certificates of deposit [Member]
Assets:
Total cash equivalents	425,000,000	392,000,000
Restricted cash and investments:
Restricted cash and investments:	3,000,000	3,000,000
Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Total cash equivalents	801,000,000	620,000,000
Restricted cash and investments:
Total assets	801,000,000	621,000,000
Liabilities:
Total liabilities	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member] | Money market funds [Member]
Assets:
Total cash equivalents	801,000,000	620,000,000
Restricted cash and investments:
Restricted cash and investments:	0	1,000,000
Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member] | Time deposits and certificates of deposit [Member]
Assets:
Total cash equivalents	0	0
Restricted cash and investments:
Restricted cash and investments:	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total cash equivalents	425,000,000	392,000,000
Restricted cash and investments:
Total assets	482,000,000	405,000,000
Liabilities:
Total liabilities	1,000,000
Significant Other Observable Inputs (Level 2) [Member] | Money market funds [Member]
Assets:
Total cash equivalents	0	0
Restricted cash and investments:
Restricted cash and investments:	0	0
Significant Other Observable Inputs (Level 2) [Member] | Time deposits and certificates of deposit [Member]
Assets:
Total cash equivalents	425,000,000	392,000,000
Restricted cash and investments:
Restricted cash and investments:	3,000,000	3,000,000
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total cash equivalents	0	0
Restricted cash and investments:
Total assets	0	0
Liabilities:
Total liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Money market funds [Member]
Assets:
Total cash equivalents	0	0
Restricted cash and investments:
Restricted cash and investments:	0	0
Significant Unobservable Inputs (Level 3) [Member] | Time deposits and certificates of deposit [Member]
Assets:
Total cash equivalents	0	0
Restricted cash and investments:
Restricted cash and investments:	0	0
Derivative Financial Instruments, Assets [Member]
Restricted cash and investments:
Derivative assets	54,000,000	10,000,000
Derivative Financial Instruments, Assets [Member] | Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Restricted cash and investments:
Derivative assets	0	0
Derivative Financial Instruments, Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Restricted cash and investments:
Derivative assets	54,000,000	10,000,000
Derivative Financial Instruments, Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Restricted cash and investments:
Derivative assets	0	$ 0
Derivative Financial Instruments, Liabilities [Member]
Liabilities:
Derivative liabilities	1,000,000
Derivative Financial Instruments, Liabilities [Member] | Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Liabilities:
Derivative liabilities	0
Derivative Financial Instruments, Liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Liabilities:
Derivative liabilities	1,000,000
Derivative Financial Instruments, Liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities:
Derivative liabilities	$ 0