Long-Term External Borrowings (Details) - USD ($) $ in Millions	Apr. 12, 2022	Jul. 31, 2022	Oct. 31, 2021	Aug. 01, 2021
Long-Term Borrowings
Total senior debt		$ 20,453.2	$ 20,664.8	$ 20,193.9
Unamortized debt discount and debt issuance costs		(59.6)	(57.5)	(57.2)
Total		20,393.6	20,607.3	20,136.7
Medium-term notes
Long-Term Borrowings
Total senior debt		20,450.3	20,649.2	20,174.1
Principal amount		20,796.7	20,378.2	19,722.5
Other notes
Long-Term Borrowings
Total senior debt		$ 2.9	$ 15.6	$ 19.8
3.35% Sustainability-Linked Medium Term Notes Due 2029
Long-Term Borrowings
Medium-term notes	$ 600.0
Debt instrument, stated interest rate (as a percent)	3.35%
3.35% Sustainability-Linked Medium Term Notes Due 2029 | Stated Sustainability Performance Target
Long-Term Borrowings
Interest rate increase (as a percent)	0.25%