XML 70 R52.htm IDEA: XBRL DOCUMENT v3.19.2

Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) - USD ($) $ in Millions	Jun. 28, 2019	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	$ 10,522	$ 10,672
Carrying Value | 0.50% convertible senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	33	31
Carrying Value | Variable interest rate Term Loan A-1 maturing 2023
Debt Instrument [Line Items]
Long-term debt	4,824	4,982
Carrying Value | Variable interest rate U.S. Term Loan B-4 maturing 2023
Debt Instrument [Line Items]
Long-term debt	2,424	2,448
Carrying Value | 1.50% convertible notes due 2024
Debt Instrument [Line Items]
Long-term debt	958	931
Carrying Value | 4.750% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	2,283	2,280
Level 2 | Fair Value
Debt Instrument [Line Items]
Long-term debt	10,430	10,851
Level 2 | Fair Value | 0.50% convertible senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	31	34
Level 2 | Fair Value | Variable interest rate Term Loan A-1 maturing 2023
Debt Instrument [Line Items]
Long-term debt	4,780	5,013
Level 2 | Fair Value | Variable interest rate U.S. Term Loan B-4 maturing 2023
Debt Instrument [Line Items]
Long-term debt	2,370	2,452
Level 2 | Fair Value | 1.50% convertible notes due 2024
Debt Instrument [Line Items]
Long-term debt	986	1,114
Level 2 | Fair Value | 4.750% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 2,263	$ 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

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wdc_ConvertibleSeniorNotesDueTwoThousandTwentyMemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wdc_OnePointFiftyPercentSeniorConvertibleNotesDueTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wdc_FourPointSeventyFivePercentSeniorUnsecuredNotesDueTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wdc_TermLoanA1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wdc_U.S.TermLoanB4Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: