Geographic Area Information (Details) $ in Millions	3 Months Ended								12 Months Ended
	Nov. 03, 2019 USD ($)	Jul. 28, 2019 USD ($)	Apr. 28, 2019 USD ($)	Jan. 27, 2019 USD ($)	Oct. 28, 2018 USD ($)	Jul. 29, 2018 USD ($)	Apr. 29, 2018 USD ($)	Jan. 28, 2018 USD ($)	Nov. 03, 2019 USD ($) item	Oct. 28, 2018 USD ($)	Oct. 29, 2017 USD ($)
Geographic Area Information
Number of operating segments | item									1
Revenues	$ 784.7	$ 741.8	$ 703.0	$ 660.8	$ 668.4	$ 661.1	$ 617.5	$ 585.2	$ 2,890.3	$ 2,532.2	$ 2,227.0
Receivables	32,821.5				30,646.7				32,821.5	30,646.7	28,395.7
U.S.
Geographic Area Information
Revenues									2,588.1	2,266.8	2,030.3
Receivables	27,854.5				26,039.6				27,854.5	26,039.6	24,189.6
Outside the U.S.
Geographic Area Information
Revenues									302.2	265.4	196.7
Receivables	$ 4,967.0				$ 4,607.1				$ 4,967.0	$ 4,607.1	$ 4,206.1