How should a derived value be distinguished from an as-reported fact?

Do not put a new formula under a source tag

A reported fact comes from a particular concept, unit, period and filing. A derived value applies an additional method to selected inputs. Keep those categories visible so another reader can distinguish what the filer reported from what the worksheet calculated.

For example, subtracting a chosen capex measure from operating cash flow creates a defined remainder. It should not inherit either input’s source tag or be presented as a separately reported fact unless an actual reported concept supplies it.

Retain enough information to reproduce the result

The two Apple rows below provide operating cash flow and the selected property, plant and equipment payment measure for the same stated duration. A subtraction can be documented separately after checking definitions and signs.

Record the formula, input rows, unit and handling of missing values. A derived remainder or ratio is not a forecast, investment recommendation or guarantee of dividend safety; its meaning depends on the exact definition and source coverage.

Reported source example

Apple Inc. · CIK 320193 · Operating cash flow

Reported source example

Apple Inc. · CIK 320193 · Capital expenditure

Separately labelled derivation

Subtracting the selected property, plant and equipment payment measure from operating cash flow gives the following defined remainder for these inputs. It is a calculation from the two rows above, not an additional as-reported fact or a safety assessment.

Defined remainder

98767000000 USD

Method

Operating cash flow minus the selected payment measure

Period

2024-09-29 to 2025-09-27

Primary sources and related references

• SEC: XBRL financial data and reporting contexts

• Browse the historical financial references
• Review the existing company-comparison overview