How it is worked out
From each 10-K's XBRL (ASC 280): every segment or product with its revenue and, where the company gives it, its operating income, every year since 2009 (on the page the last three for everyone, all of them with Ploutos Investor). Each year is read from the latest report that carries it, so a renamed segment shows in its current form.
How to read it
- The company cuts its segments as it runs them, and re-cuts them at every reorganisation. A year in which the segments do not add up to revenue means it broke down only part of the total.
- Operating income by segment leaves out the corporate costs it does not allocate, so it does not add up to the company's operating income.
Example
Adobe reports Digital Media and Digital Experience: the first gave 74% of fiscal 2025 revenue, from 73% three years before.