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Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) - USD ($) $ in Millions	Dec. 28, 2018	Jun. 29, 2018
0.50% convertible senior notes due 2020
Debt Instrument [Line Items]
Debt instrument, interest rate (percentage)	0.50%
1.50% convertible notes due 2024
Debt Instrument [Line Items]
Debt instrument, interest rate (percentage)	1.50%
4.750% senior unsecured notes due 2026
Debt Instrument [Line Items]
Debt instrument, interest rate (percentage)	4.75%
Carrying Value
Debt Instrument [Line Items]
Long-term debt	$ 10,614	$ 10,672
Carrying Value | 0.50% convertible senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	32	31
Carrying Value | Variable interest rate Term Loan A-1 maturing 2023
Debt Instrument [Line Items]
Long-term debt	4,920	4,982
Carrying Value | Variable interest rate U.S. Term Loan B-4 maturing 2023
Debt Instrument [Line Items]
Long-term debt	2,436	2,448
Carrying Value | 1.50% convertible notes due 2024
Debt Instrument [Line Items]
Long-term debt	944	931
Carrying Value | 4.750% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	2,282	2,280
Level 2 | Fair Value
Debt Instrument [Line Items]
Long-term debt	9,971	10,851
Level 2 | Fair Value | 0.50% convertible senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	34	34
Level 2 | Fair Value | Variable interest rate Term Loan A-1 maturing 2023
Debt Instrument [Line Items]
Long-term debt	4,722	5,013
Level 2 | Fair Value | Variable interest rate U.S. Term Loan B-4 maturing 2023
Debt Instrument [Line Items]
Long-term debt	2,333	2,452
Level 2 | Fair Value | 1.50% convertible notes due 2024
Debt Instrument [Line Items]
Long-term debt	888	1,114
Level 2 | Fair Value | 4.750% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 1,994	$ 2,238

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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X

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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