| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | us-gaap:CommonStockSharesOutstanding | us-gaap:TreasuryStockShares | 4 |
| 2 | us-gaap:CommonStockSharesOutstanding | us-gaap:CommonStockSharesIssued | 3 |
| 3 | us-gaap:CommonStockSharesOutstanding | graybar:CommonStockSharesIssuedVotingTrustees | 1 |
| 4 | us-gaap:CommonStockSharesOutstanding | graybar:CommonStockSharesIssuedIndividuals | 1 |
(Note that this is a work in progress!)