Summary of Significant Accounting Policies New Accounting Pronouncement Subsequent Event (Details) - Scenario, Forecast [Member] $ in Millions	3 Months Ended
	Feb. 04, 2018 USD ($)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (266)
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	67
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 199