XML 47 R32.htm IDEA: XBRL DOCUMENT v3.19.1

Income Tax Expense (Benefit) (Tables)

9 Months Ended

Mar. 29, 2019

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, which includes the discrete effects of the finalization of the accounting for the tax effects of the enactment of the 2017 Act as discussed above:

	Three Months Ended								Nine Months Ended
	March 29, 2019				March 30, 2018				March 29, 2019				March 30, 2018
	(in millions)
Income (loss) before taxes	$	(477	)		$	(128	)		$	187			$	1,356
Income tax expense (benefit)	$	104			$	(189	)		$	744			$	1,437
Effective tax rate	(22		)%		148		%		398		%		106		%

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