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Debt - Narrative (Details) - USD ($) |  |  |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 05, 2025 | Aug. 03, 2025 | May 31, 2025 | May 31, 2018 | Jan. 03, 2026 | Sep. 27, 2025 | Sep. 28, 2024 | Oct. 31, 2025 | Dec. 28, 2024
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt obligations |  |  |  |  |  | $ 324,200,000 |  |  | $ 344,600,000
Deferred debt issuance costs, current |  |  |  |  |  | 400,000 |  |  |
Deferred debt issuance costs |  |  |  |  |  | 300,000 |  |  |
Proceeds from debt |  |  |  |  |  | 357,100,000 | $ 262,400,000 |  |
Repayments of long-term debt |  |  |  |  |  | $ 100,000,000 |  |  |
Maximum ratio of interest coverage to earnings for the last four fiscal quarters |  |  |  |  |  | 4.0 |  |  |
Maximum ratio of leverage to earnings for the last four fiscal quarters |  |  |  |  |  | 3.5 |  |  |
Unsecured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from debt |  |  |  |  |  | $ 300,000,000 |  |  |
Interest rate |  |  |  |  |  | 5.70% |  |  | 5.90%
Bridge Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Deferred debt issuance costs, current |  | $ 1,400,000 |  |  |  |  |  |  |
Borrowings |  | $ 1,100,000,000 |  |  |  |  |  |  |
Note term (in years) |  | 364 days |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit outstanding |  |  |  |  |  | $ 75,000,000 |  |  |
Line of credit maximum borrowing capacity |  |  |  |  |  | 425,000,000 |  |  |
Revolving Credit Facility | Debt Instrument, Redemption, Period One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio | 425.00% |  |  |  |  |  |  |  |
Revolving Credit Facility | Debt Instrument, Redemption, Period Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio | 400.00% |  |  |  |  |  |  |  |
Revolving Credit Facility | Debt Instrument, Redemption, Period Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio | 350.00% |  |  |  |  |  |  |  |
Revolving Credit Facility | Debt Instrument, Redemption, Period Four |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio | 350.00% |  |  |  |  |  |  |  |
Notes Payable to Banks |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt obligations |  |  |  |  |  | 275,000,000 |  |  |
Private Placement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of debt obligations |  |  |  |  |  | 49,000,000 |  |  |
Borrowings |  |  |  |  |  | $ 50,000,000 |  |  |
Note term (in years) |  |  |  |  |  | 10 years |  |  |
Term Loan Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 200,000,000 |  |  |
Deferred debt issuance costs |  |  |  |  |  | 1,000,000.0 |  |  |
Fixed-rate notes due in 2028 with an interest rate of 4.4 % |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings |  |  |  | $ 50,000,000 |  |  |  |  |
Deferred debt issuance costs |  |  |  |  |  | $ 100,000 |  |  |
Note term (in years) |  |  |  | 10 years |  |  |  |  |
Interest rate |  |  |  | 4.40% |  |  |  |  |
Fixed-rate notes due in 2025 with an interest rate of 4.2 % |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Note term (in years) |  |  | 7 years |  |  |  |  |  |
Interest rate |  |  | 4.20% |  |  |  |  |  |
Repaid principal amount |  |  | $ 50,000,000 |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Steelcase Inc |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit outstanding | $ 450,000,000 |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit maximum borrowing capacity | $ 425,000,000 |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Federal Funds Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.50% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate floor | 0.00% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.00% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.25% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum | Variable Rate Component Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.25% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.875% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum | Variable Rate Component Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.875% |  |  |  |  |  |  |  |
Revolving Facility | Revolving Credit Facility | Line of Credit | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate floor | 1.00% |  |  |  |  |  |  |  |
Term Loan A | Bridge Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, retired | $ 300,000,000 |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | 500,000,000 |  |  |  |  |  |  |  |
Decrease in borrowings | $ 150,000,000 |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from debt |  |  |  |  | $ 350,000,000 |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Debt Instrument, Redemption, Period One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 2.50% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Debt Instrument, Redemption, Period Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 5.00% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Debt Instrument, Redemption, Period Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 5.00% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Debt Instrument, Redemption, Period Four |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 7.50% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Debt Instrument, Redemption, Period Five |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 10.00% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Federal Funds Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.50% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate floor | 0.00% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.00% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.25% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum | Variable Rate Component Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.25% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum | Variable Rate Component One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 0.875% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum | Variable Rate Component Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate | 1.875% |  |  |  |  |  |  |  |
Term Loan A | Senior Unsecured Debt | Line of Credit | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Variable rate floor | 1.00% |  |  |  |  |  |  |  |
Term Loan B | Bridge Loan | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, retired |  |  |  |  |  |  |  | $ 300,000,000 |
Term Loan B | Senior Unsecured Debt | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic repayment percent | 0.25% |  |  |  |  |  |  |  |
Prepayment fee | 1.00% |  |  |  |  |  |  |  |
Decrease in borrowings | $ 300,000,000 |  |  |  |  |  |  |  |
Term Loan B | Senior Unsecured Debt | Line of Credit | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  | $ 500,000,000 |
Term Loan B | Senior Unsecured Debt | Line of Credit | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from debt |  |  |  |  | $ 500,000,000 |  |  |  |
Term Loan B | Senior Unsecured Debt | Line of Credit | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |  |  |  |
Term Loan B | Senior Unsecured Debt | Line of Credit | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | 800,000,000 |  |  |  |  |  |  |  |
5.125% Notes Due 2029 | Steelcase Inc |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | $ 450,000,000 |  |  |  |  |  |  |  |
Interest rate | 5.125% |  |  |  |  |  |  |  |

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