Investments - Maturities of Available for Sale and Held to Maturity Securities (Details) $ in Millions	Sep. 01, 2019 USD ($)
Available-For-Sale, Cost Basis
Due in one year or less	$ 297
Due after one year through five years	402
Due after five years	17
Available-for-sale, cost basis, total	716
Available-For-Sale, Fair Value
Due in one year or less	297
Due after one year through five years	407
Due after five years	18
Available-for-sale, recorded basis, total	722
Held-To-Maturity
Due in one year or less	338
Due after one year through five years	0
Due after five years	0
Held-to-maturity, cost basis, total	$ 338