To estimate the S&P-adjusted debt-to-EBITDA ratio for Bouygues SA for the fiscal year ended December 31, 2022, we follow the provided workflow:

### 1. Industry Identification
Bouygues is a diversified group with significant activities in construction (Bouygues Construction, Bouygues Immobilier, Colas), media (TF1), and telecommunications (Bouygues Telecom). Given its diverse nature, it does not fit exclusively into the provided niche methodologies (Regulated Utilities, E&P, Unregulated Power, or Transportation). Therefore, we apply general S&P corporate methodology.

### 2. Estimate "Adjusted_Debt"
*   **Reported Debt:** "Net Debt" 2022-01-01 is reported as 941,000,000 EUR. However, to get total gross debt for S&P adjustment, we look at the balance sheet:
    *   Longterm Borrowings: 5,805,000,000
    *   Current Borrowings & Current Portion of Noncurrent: 1,324,000,000
    *   Current Overdrafts and Short Term Borrowings: 351,000,000
    *   Total Borrowings: 7,480,000,000 EUR
*   **Leases:**
    *   Noncurrent Lease Liabilities: 1,473,000,000
    *   Current Lease Liabilities: 362,000,000
    *   Total Lease Debt: 1,835,000,000 EUR
*   **Cash:** Cash And Cash Equivalents: 6,501,000,000 EUR. S&P typically nets only a portion of cash if it is needed for operations, but using the reported "Net Debt" provides the base.
*   **Adjusted_Debt Calculation:** Reported Net Debt (941M) + Lease Debt (1,835M) = 2,776,000,000 EUR.

### 3. Estimate "Adjusted_EBITDA"
*   **Reported EBITDA:** 
    *   Operating profit recurring: 1,693,000,000 (2021-2022 figure provided as base for 2022 context). 
    *   Add back Depreciation & Amortization: 2,065,000,000.
    *   Add back Depreciation Right-of-use assets: 353,000,000.
    *   Total Reported EBITDA ≈ 4,111,000,000 EUR.
*   **Lease Adjustment:** In S&P methodology, the portion of lease expense (depreciation + interest) is typically treated as an operating expense. The reported EBITDA already includes the rent expense in operating costs. Adding back the lease depreciation (353M) and interest (52M) to the operating figure is appropriate.
*   **Nonrecurring Items:** Operating profit 1,733,000,000 - Recurring Operating profit 1,693,000,000 = 40,000,000 (Non-recurring net).
*   **Adjusted_EBITDA:** 4,111,000,000 EUR.

### 4. Calculate Ratio
*   Adjusted Debt / Adjusted EBITDA = 2,776,000,000 / 4,111,000,000 = 0.6752...

Rounding to two decimal places: 0.68.

<answer>0.68</answer>