Investments - Maturities of Available for Sale and Held to Maturity Securities (Details) $ in Millions	Nov. 22, 2015 USD ($)
Available-For-Sale, Cost Basis
Due in one year or less	$ 177
Due after one year through five years	858
Due after five years	60
Available-for-sale, cost basis, total	1,095
Available-For-Sale, Fair Value
Due in one year or less	177
Due after one year through five years	859
Due after five years	61
Available-for-sale, recorded basis, total	1,097
Held-To-Maturity
Due in one year or less	132
Due after one year through five years	0
Due after five years	0
Held-to-maturity, cost basis, total	$ 132