v2.4.0.8

Balance Sheet Information (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 27, 2013
Available-for-sale debt securities, Amortized Cost
Amortized Cost	$ 2,209
stx_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsAmortizedCost	17
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis	1,790
AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortize	402
Available-for-sale debt securities, Fair Value
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value	1,790
Available-for-sale Securities, Debt Maturities, after One Through Five Years, at Fair Value	402
Available-for-sale Securities, Debt Maturities, after Five Years Fair Value	15
Fair Value	$ 2,207

X

- Definition

This item represents available-for-sale debt securities, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are expected to mature after five years from the balance sheet date.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next rolling twelve months following the latest balance sheet presented. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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