Direct Answer
3M reports revenue across 3 business segments in its fiscal 2025 Form 10-K. Safety and Industrial is the largest, with $11.4 billion of revenue (46% of the total), followed by Transportation and Electronics at $8.3 billion (33%).
How Does 3M Make Money?
No single line supplies a majority of revenue: the largest, Safety and Industrial, is 46%, which spreads 3M's exposure across several demand drivers. Between fiscal 2024 and 2025, Safety and Industrial grew fastest (+3.9%) and Transportation and Electronics slowest (-1.3%), so the revenue mix tilts toward Safety and Industrial while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Safety and Industrial | $11.4 billion | $11.0 billion | 45.6% | 3.9% |
| Transportation and Electronics | $8.3 billion | $8.4 billion | 33.2% | -1.3% |
| Consumer | $4.9 billion | $4.9 billion | 19.7% | -0.2% |
Which 3M Segments Earn the Most?
| Segment | FY2025 segment operating income | Segment margin |
|---|---|---|
| Safety and Industrial | $2.8 billion | 24.9% |
| Transportation and Electronics | $1.4 billion | 17.4% |
| Consumer | $996 million | 20.2% |
Segment operating income is the profit measure 3M reports to its chief operating decision maker for each segment. It usually leaves out corporate costs that are not allocated to a segment, so the segments usually add up to more than consolidated operating income, and margins are comparable within 3M more safely than against another company.
What the Segment Figures Do Not Show
The rows above add up to 99% of 3M's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value 3M reported in the segment note and revenue disclosures of its Form 10-K filed February 3, 2026 (accession 0000066740-26-000014), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are 3M's business segments?
In its fiscal 2025 Form 10-K, 3M reports revenue for Safety and Industrial, Transportation and Electronics and Consumer.
Which part of 3M brings in the most revenue?
Safety and Industrial, with $11.4 billion of revenue in fiscal 2025, or 46% of the total.
Where does 3M report its segment results?
In the segment note to the financial statements in its Form 10-K, most recently filed February 3, 2026, alongside management's discussion of each segment's results.