It splits revenue out to 3 categories, "Productivity and Business Processes", "Intelligent Cloud", and "More Personal Computing", with windows as one of several things in the 3rd group. How did you figure it out as a 5th place revenue source?
You can also kinda read the 3 categories as office, azure, windows. But that is a gross oversimplification.
Search for this: "Revenue, classified by significant product and service offerings"