XML 41 R28.htm IDEA: XBRL DOCUMENT v3.8.0.1

Income Tax Expense (Tables)

3 Months Ended

Sep. 29, 2017

Income Tax Disclosure [Abstract]

Income Tax Expense (Benefit) and Effective Tax Rate

The following table presents the Company’s income tax expense and the effective tax rate:

	Three Months Ended
	September 29, 2017				September 30, 2016
	(in millions)
Income (loss) before taxes	$	710			$	(271	)
Income tax expense	$	29			$	95
Effective tax rate	4		%		(35		)%

X

- References

No definition available.

+ Details

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

X

- Definition

Income Tax Expense (Benefit) and Effective Tax Rate reported in period presented.

+ References

No definition available.

+ Details

Name:	wdc_IncomeTaxExpenseBenefitandEffectiveTaxRateTableTextBlock
Namespace Prefix:	wdc_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration