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Investments - Maturities of Available for Sale and Held to Maturity Securities (Details) $ in Millions	Sep. 02, 2018 USD ($)
Available-For-Sale, Cost Basis
Due in one year or less	$ 307
Due after one year through five years	584
Due after five years	21
Available-for-sale, cost basis, total	912
Available-For-Sale, Fair Value
Due in one year or less	305
Due after one year through five years	572
Due after five years	21
Available-for-sale, recorded basis, total	898
Held-To-Maturity
Due in one year or less	306
Due after one year through five years	0
Due after five years	0
Held-to-maturity, cost basis, total	$ 306

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